2 * Copyright 1998, 2000 Marshall Kirk McKusick.
3 * Copyright 2009, 2010 Jeffrey W. Roberson <jeff@FreeBSD.org>
6 * The soft updates code is derived from the appendix of a University
7 * of Michigan technical report (Gregory R. Ganger and Yale N. Patt,
8 * "Soft Updates: A Solution to the Metadata Update Problem in File
9 * Systems", CSE-TR-254-95, August 1995).
11 * Further information about soft updates can be obtained from:
13 * Marshall Kirk McKusick http://www.mckusick.com/softdep/
14 * 1614 Oxford Street mckusick@mckusick.com
15 * Berkeley, CA 94709-1608 +1-510-843-9542
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
22 * 1. Redistributions of source code must retain the above copyright
23 * notice, this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in the
26 * documentation and/or other materials provided with the distribution.
28 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
29 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
30 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
31 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
32 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
33 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
34 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
35 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
36 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
37 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 * from: @(#)ffs_softdep.c 9.59 (McKusick) 6/21/00
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
46 #include "opt_quota.h"
50 * For now we want the safety net that the DEBUG flag provides.
56 #include <sys/param.h>
57 #include <sys/kernel.h>
58 #include <sys/systm.h>
62 #include <sys/kthread.h>
64 #include <sys/limits.h>
66 #include <sys/malloc.h>
67 #include <sys/mount.h>
68 #include <sys/mutex.h>
69 #include <sys/namei.h>
72 #include <sys/racct.h>
73 #include <sys/rwlock.h>
75 #include <sys/sysctl.h>
76 #include <sys/syslog.h>
77 #include <sys/vnode.h>
80 #include <ufs/ufs/dir.h>
81 #include <ufs/ufs/extattr.h>
82 #include <ufs/ufs/quota.h>
83 #include <ufs/ufs/inode.h>
84 #include <ufs/ufs/ufsmount.h>
85 #include <ufs/ffs/fs.h>
86 #include <ufs/ffs/softdep.h>
87 #include <ufs/ffs/ffs_extern.h>
88 #include <ufs/ufs/ufs_extern.h>
91 #include <vm/vm_extern.h>
92 #include <vm/vm_object.h>
94 #include <geom/geom.h>
98 #define KTR_SUJ 0 /* Define to KTR_SPARE. */
103 softdep_flushfiles(oldmnt, flags, td)
104 struct mount *oldmnt;
109 panic("softdep_flushfiles called");
113 softdep_mount(devvp, mp, fs, cred)
131 softdep_uninitialize()
142 panic("softdep_unmount called");
146 softdep_setup_sbupdate(ump, fs, bp)
147 struct ufsmount *ump;
152 panic("softdep_setup_sbupdate called");
156 softdep_setup_inomapdep(bp, ip, newinum, mode)
163 panic("softdep_setup_inomapdep called");
167 softdep_setup_blkmapdep(bp, mp, newblkno, frags, oldfrags)
170 ufs2_daddr_t newblkno;
175 panic("softdep_setup_blkmapdep called");
179 softdep_setup_allocdirect(ip, lbn, newblkno, oldblkno, newsize, oldsize, bp)
182 ufs2_daddr_t newblkno;
183 ufs2_daddr_t oldblkno;
189 panic("softdep_setup_allocdirect called");
193 softdep_setup_allocext(ip, lbn, newblkno, oldblkno, newsize, oldsize, bp)
196 ufs2_daddr_t newblkno;
197 ufs2_daddr_t oldblkno;
203 panic("softdep_setup_allocext called");
207 softdep_setup_allocindir_page(ip, lbn, bp, ptrno, newblkno, oldblkno, nbp)
212 ufs2_daddr_t newblkno;
213 ufs2_daddr_t oldblkno;
217 panic("softdep_setup_allocindir_page called");
221 softdep_setup_allocindir_meta(nbp, ip, bp, ptrno, newblkno)
226 ufs2_daddr_t newblkno;
229 panic("softdep_setup_allocindir_meta called");
233 softdep_journal_freeblocks(ip, cred, length, flags)
240 panic("softdep_journal_freeblocks called");
244 softdep_journal_fsync(ip)
248 panic("softdep_journal_fsync called");
252 softdep_setup_freeblocks(ip, length, flags)
258 panic("softdep_setup_freeblocks called");
262 softdep_freefile(pvp, ino, mode)
268 panic("softdep_freefile called");
272 softdep_setup_directory_add(bp, dp, diroffset, newinum, newdirbp, isnewblk)
277 struct buf *newdirbp;
281 panic("softdep_setup_directory_add called");
285 softdep_change_directoryentry_offset(bp, dp, base, oldloc, newloc, entrysize)
294 panic("softdep_change_directoryentry_offset called");
298 softdep_setup_remove(bp, dp, ip, isrmdir)
305 panic("softdep_setup_remove called");
309 softdep_setup_directory_change(bp, dp, ip, newinum, isrmdir)
317 panic("softdep_setup_directory_change called");
321 softdep_setup_blkfree(mp, bp, blkno, frags, wkhd)
326 struct workhead *wkhd;
329 panic("%s called", __FUNCTION__);
333 softdep_setup_inofree(mp, bp, ino, wkhd)
337 struct workhead *wkhd;
340 panic("%s called", __FUNCTION__);
344 softdep_setup_unlink(dp, ip)
349 panic("%s called", __FUNCTION__);
353 softdep_setup_link(dp, ip)
358 panic("%s called", __FUNCTION__);
362 softdep_revert_link(dp, ip)
367 panic("%s called", __FUNCTION__);
371 softdep_setup_rmdir(dp, ip)
376 panic("%s called", __FUNCTION__);
380 softdep_revert_rmdir(dp, ip)
385 panic("%s called", __FUNCTION__);
389 softdep_setup_create(dp, ip)
394 panic("%s called", __FUNCTION__);
398 softdep_revert_create(dp, ip)
403 panic("%s called", __FUNCTION__);
407 softdep_setup_mkdir(dp, ip)
412 panic("%s called", __FUNCTION__);
416 softdep_revert_mkdir(dp, ip)
421 panic("%s called", __FUNCTION__);
425 softdep_setup_dotdot_link(dp, ip)
430 panic("%s called", __FUNCTION__);
434 softdep_prealloc(vp, waitok)
439 panic("%s called", __FUNCTION__);
443 softdep_journal_lookup(mp, vpp)
452 softdep_change_linkcnt(ip)
456 panic("softdep_change_linkcnt called");
460 softdep_load_inodeblock(ip)
464 panic("softdep_load_inodeblock called");
468 softdep_update_inodeblock(ip, bp, waitfor)
474 panic("softdep_update_inodeblock called");
479 struct vnode *vp; /* the "in_core" copy of the inode */
486 softdep_fsync_mountdev(vp)
494 softdep_flushworklist(oldmnt, countp, td)
495 struct mount *oldmnt;
505 softdep_sync_metadata(struct vnode *vp)
508 panic("softdep_sync_metadata called");
512 softdep_sync_buf(struct vnode *vp, struct buf *bp, int waitfor)
515 panic("softdep_sync_buf called");
523 panic("softdep_slowdown called");
527 softdep_request_cleanup(fs, vp, cred, resource)
538 softdep_check_suspend(struct mount *mp,
541 int softdep_accdepcnt,
542 int secondary_writes,
543 int secondary_accwrites)
548 (void) softdep_depcnt,
549 (void) softdep_accdepcnt;
551 bo = &devvp->v_bufobj;
552 ASSERT_BO_WLOCKED(bo);
555 while (mp->mnt_secondary_writes != 0) {
557 msleep(&mp->mnt_secondary_writes, MNT_MTX(mp),
558 (PUSER - 1) | PDROP, "secwr", 0);
564 * Reasons for needing more work before suspend:
565 * - Dirty buffers on devvp.
566 * - Secondary writes occurred after start of vnode sync loop
569 if (bo->bo_numoutput > 0 ||
570 bo->bo_dirty.bv_cnt > 0 ||
571 secondary_writes != 0 ||
572 mp->mnt_secondary_writes != 0 ||
573 secondary_accwrites != mp->mnt_secondary_accwrites)
580 softdep_get_depcounts(struct mount *mp,
582 int *softdepactiveaccp)
586 *softdepactiveaccp = 0;
590 softdep_buf_append(bp, wkhd)
592 struct workhead *wkhd;
595 panic("softdep_buf_appendwork called");
599 softdep_inode_append(ip, cred, wkhd)
602 struct workhead *wkhd;
605 panic("softdep_inode_appendwork called");
609 softdep_freework(wkhd)
610 struct workhead *wkhd;
613 panic("softdep_freework called");
618 FEATURE(softupdates, "FFS soft-updates support");
620 static SYSCTL_NODE(_debug, OID_AUTO, softdep, CTLFLAG_RW, 0,
621 "soft updates stats");
622 static SYSCTL_NODE(_debug_softdep, OID_AUTO, total, CTLFLAG_RW, 0,
623 "total dependencies allocated");
624 static SYSCTL_NODE(_debug_softdep, OID_AUTO, highuse, CTLFLAG_RW, 0,
625 "high use dependencies allocated");
626 static SYSCTL_NODE(_debug_softdep, OID_AUTO, current, CTLFLAG_RW, 0,
627 "current dependencies allocated");
628 static SYSCTL_NODE(_debug_softdep, OID_AUTO, write, CTLFLAG_RW, 0,
629 "current dependencies written");
631 unsigned long dep_current[D_LAST + 1];
632 unsigned long dep_highuse[D_LAST + 1];
633 unsigned long dep_total[D_LAST + 1];
634 unsigned long dep_write[D_LAST + 1];
636 #define SOFTDEP_TYPE(type, str, long) \
637 static MALLOC_DEFINE(M_ ## type, #str, long); \
638 SYSCTL_ULONG(_debug_softdep_total, OID_AUTO, str, CTLFLAG_RD, \
639 &dep_total[D_ ## type], 0, ""); \
640 SYSCTL_ULONG(_debug_softdep_current, OID_AUTO, str, CTLFLAG_RD, \
641 &dep_current[D_ ## type], 0, ""); \
642 SYSCTL_ULONG(_debug_softdep_highuse, OID_AUTO, str, CTLFLAG_RD, \
643 &dep_highuse[D_ ## type], 0, ""); \
644 SYSCTL_ULONG(_debug_softdep_write, OID_AUTO, str, CTLFLAG_RD, \
645 &dep_write[D_ ## type], 0, "");
647 SOFTDEP_TYPE(PAGEDEP, pagedep, "File page dependencies");
648 SOFTDEP_TYPE(INODEDEP, inodedep, "Inode dependencies");
649 SOFTDEP_TYPE(BMSAFEMAP, bmsafemap,
650 "Block or frag allocated from cyl group map");
651 SOFTDEP_TYPE(NEWBLK, newblk, "New block or frag allocation dependency");
652 SOFTDEP_TYPE(ALLOCDIRECT, allocdirect, "Block or frag dependency for an inode");
653 SOFTDEP_TYPE(INDIRDEP, indirdep, "Indirect block dependencies");
654 SOFTDEP_TYPE(ALLOCINDIR, allocindir, "Block dependency for an indirect block");
655 SOFTDEP_TYPE(FREEFRAG, freefrag, "Previously used frag for an inode");
656 SOFTDEP_TYPE(FREEBLKS, freeblks, "Blocks freed from an inode");
657 SOFTDEP_TYPE(FREEFILE, freefile, "Inode deallocated");
658 SOFTDEP_TYPE(DIRADD, diradd, "New directory entry");
659 SOFTDEP_TYPE(MKDIR, mkdir, "New directory");
660 SOFTDEP_TYPE(DIRREM, dirrem, "Directory entry deleted");
661 SOFTDEP_TYPE(NEWDIRBLK, newdirblk, "Unclaimed new directory block");
662 SOFTDEP_TYPE(FREEWORK, freework, "free an inode block");
663 SOFTDEP_TYPE(FREEDEP, freedep, "track a block free");
664 SOFTDEP_TYPE(JADDREF, jaddref, "Journal inode ref add");
665 SOFTDEP_TYPE(JREMREF, jremref, "Journal inode ref remove");
666 SOFTDEP_TYPE(JMVREF, jmvref, "Journal inode ref move");
667 SOFTDEP_TYPE(JNEWBLK, jnewblk, "Journal new block");
668 SOFTDEP_TYPE(JFREEBLK, jfreeblk, "Journal free block");
669 SOFTDEP_TYPE(JFREEFRAG, jfreefrag, "Journal free frag");
670 SOFTDEP_TYPE(JSEG, jseg, "Journal segment");
671 SOFTDEP_TYPE(JSEGDEP, jsegdep, "Journal segment complete");
672 SOFTDEP_TYPE(SBDEP, sbdep, "Superblock write dependency");
673 SOFTDEP_TYPE(JTRUNC, jtrunc, "Journal inode truncation");
674 SOFTDEP_TYPE(JFSYNC, jfsync, "Journal fsync complete");
676 static MALLOC_DEFINE(M_SENTINEL, "sentinel", "Worklist sentinel");
678 static MALLOC_DEFINE(M_SAVEDINO, "savedino", "Saved inodes");
679 static MALLOC_DEFINE(M_JBLOCKS, "jblocks", "Journal block locations");
680 static MALLOC_DEFINE(M_MOUNTDATA, "softdep", "Softdep per-mount data");
682 #define M_SOFTDEP_FLAGS (M_WAITOK)
685 * translate from workitem type to memory type
686 * MUST match the defines above, such that memtype[D_XXX] == M_XXX
688 static struct malloc_type *memtype[] = {
719 #define DtoM(type) (memtype[type])
722 * Names of malloc types.
724 #define TYPENAME(type) \
725 ((unsigned)(type) <= D_LAST ? memtype[type]->ks_shortdesc : "???")
727 * End system adaptation definitions.
730 #define DOTDOT_OFFSET offsetof(struct dirtemplate, dotdot_ino)
731 #define DOT_OFFSET offsetof(struct dirtemplate, dot_ino)
734 * Internal function prototypes.
736 static void check_clear_deps(struct mount *);
737 static void softdep_error(char *, int);
738 static int softdep_process_worklist(struct mount *, int);
739 static int softdep_waitidle(struct mount *, int);
740 static void drain_output(struct vnode *);
741 static struct buf *getdirtybuf(struct buf *, struct rwlock *, int);
742 static int check_inodedep_free(struct inodedep *);
743 static void clear_remove(struct mount *);
744 static void clear_inodedeps(struct mount *);
745 static void unlinked_inodedep(struct mount *, struct inodedep *);
746 static void clear_unlinked_inodedep(struct inodedep *);
747 static struct inodedep *first_unlinked_inodedep(struct ufsmount *);
748 static int flush_pagedep_deps(struct vnode *, struct mount *,
750 static int free_pagedep(struct pagedep *);
751 static int flush_newblk_dep(struct vnode *, struct mount *, ufs_lbn_t);
752 static int flush_inodedep_deps(struct vnode *, struct mount *, ino_t);
753 static int flush_deplist(struct allocdirectlst *, int, int *);
754 static int sync_cgs(struct mount *, int);
755 static int handle_written_filepage(struct pagedep *, struct buf *, int);
756 static int handle_written_sbdep(struct sbdep *, struct buf *);
757 static void initiate_write_sbdep(struct sbdep *);
758 static void diradd_inode_written(struct diradd *, struct inodedep *);
759 static int handle_written_indirdep(struct indirdep *, struct buf *,
761 static int handle_written_inodeblock(struct inodedep *, struct buf *, int);
762 static int jnewblk_rollforward(struct jnewblk *, struct fs *, struct cg *,
764 static int handle_written_bmsafemap(struct bmsafemap *, struct buf *, int);
765 static void handle_written_jaddref(struct jaddref *);
766 static void handle_written_jremref(struct jremref *);
767 static void handle_written_jseg(struct jseg *, struct buf *);
768 static void handle_written_jnewblk(struct jnewblk *);
769 static void handle_written_jblkdep(struct jblkdep *);
770 static void handle_written_jfreefrag(struct jfreefrag *);
771 static void complete_jseg(struct jseg *);
772 static void complete_jsegs(struct jseg *);
773 static void jseg_write(struct ufsmount *ump, struct jseg *, uint8_t *);
774 static void jaddref_write(struct jaddref *, struct jseg *, uint8_t *);
775 static void jremref_write(struct jremref *, struct jseg *, uint8_t *);
776 static void jmvref_write(struct jmvref *, struct jseg *, uint8_t *);
777 static void jtrunc_write(struct jtrunc *, struct jseg *, uint8_t *);
778 static void jfsync_write(struct jfsync *, struct jseg *, uint8_t *data);
779 static void jnewblk_write(struct jnewblk *, struct jseg *, uint8_t *);
780 static void jfreeblk_write(struct jfreeblk *, struct jseg *, uint8_t *);
781 static void jfreefrag_write(struct jfreefrag *, struct jseg *, uint8_t *);
782 static inline void inoref_write(struct inoref *, struct jseg *,
784 static void handle_allocdirect_partdone(struct allocdirect *,
786 static struct jnewblk *cancel_newblk(struct newblk *, struct worklist *,
788 static void indirdep_complete(struct indirdep *);
789 static int indirblk_lookup(struct mount *, ufs2_daddr_t);
790 static void indirblk_insert(struct freework *);
791 static void indirblk_remove(struct freework *);
792 static void handle_allocindir_partdone(struct allocindir *);
793 static void initiate_write_filepage(struct pagedep *, struct buf *);
794 static void initiate_write_indirdep(struct indirdep*, struct buf *);
795 static void handle_written_mkdir(struct mkdir *, int);
796 static int jnewblk_rollback(struct jnewblk *, struct fs *, struct cg *,
798 static void initiate_write_bmsafemap(struct bmsafemap *, struct buf *);
799 static void initiate_write_inodeblock_ufs1(struct inodedep *, struct buf *);
800 static void initiate_write_inodeblock_ufs2(struct inodedep *, struct buf *);
801 static void handle_workitem_freefile(struct freefile *);
802 static int handle_workitem_remove(struct dirrem *, int);
803 static struct dirrem *newdirrem(struct buf *, struct inode *,
804 struct inode *, int, struct dirrem **);
805 static struct indirdep *indirdep_lookup(struct mount *, struct inode *,
807 static void cancel_indirdep(struct indirdep *, struct buf *,
809 static void free_indirdep(struct indirdep *);
810 static void free_diradd(struct diradd *, struct workhead *);
811 static void merge_diradd(struct inodedep *, struct diradd *);
812 static void complete_diradd(struct diradd *);
813 static struct diradd *diradd_lookup(struct pagedep *, int);
814 static struct jremref *cancel_diradd_dotdot(struct inode *, struct dirrem *,
816 static struct jremref *cancel_mkdir_dotdot(struct inode *, struct dirrem *,
818 static void cancel_diradd(struct diradd *, struct dirrem *, struct jremref *,
819 struct jremref *, struct jremref *);
820 static void dirrem_journal(struct dirrem *, struct jremref *, struct jremref *,
822 static void cancel_allocindir(struct allocindir *, struct buf *bp,
823 struct freeblks *, int);
824 static int setup_trunc_indir(struct freeblks *, struct inode *,
825 ufs_lbn_t, ufs_lbn_t, ufs2_daddr_t);
826 static void complete_trunc_indir(struct freework *);
827 static void trunc_indirdep(struct indirdep *, struct freeblks *, struct buf *,
829 static void complete_mkdir(struct mkdir *);
830 static void free_newdirblk(struct newdirblk *);
831 static void free_jremref(struct jremref *);
832 static void free_jaddref(struct jaddref *);
833 static void free_jsegdep(struct jsegdep *);
834 static void free_jsegs(struct jblocks *);
835 static void rele_jseg(struct jseg *);
836 static void free_jseg(struct jseg *, struct jblocks *);
837 static void free_jnewblk(struct jnewblk *);
838 static void free_jblkdep(struct jblkdep *);
839 static void free_jfreefrag(struct jfreefrag *);
840 static void free_freedep(struct freedep *);
841 static void journal_jremref(struct dirrem *, struct jremref *,
843 static void cancel_jnewblk(struct jnewblk *, struct workhead *);
844 static int cancel_jaddref(struct jaddref *, struct inodedep *,
846 static void cancel_jfreefrag(struct jfreefrag *);
847 static inline void setup_freedirect(struct freeblks *, struct inode *,
849 static inline void setup_freeext(struct freeblks *, struct inode *, int, int);
850 static inline void setup_freeindir(struct freeblks *, struct inode *, int,
852 static inline struct freeblks *newfreeblks(struct mount *, struct inode *);
853 static void freeblks_free(struct ufsmount *, struct freeblks *, int);
854 static void indir_trunc(struct freework *, ufs2_daddr_t, ufs_lbn_t);
855 static ufs2_daddr_t blkcount(struct fs *, ufs2_daddr_t, off_t);
856 static int trunc_check_buf(struct buf *, int *, ufs_lbn_t, int, int);
857 static void trunc_dependencies(struct inode *, struct freeblks *, ufs_lbn_t,
859 static void trunc_pages(struct inode *, off_t, ufs2_daddr_t, int);
860 static int cancel_pagedep(struct pagedep *, struct freeblks *, int);
861 static int deallocate_dependencies(struct buf *, struct freeblks *, int);
862 static void newblk_freefrag(struct newblk*);
863 static void free_newblk(struct newblk *);
864 static void cancel_allocdirect(struct allocdirectlst *,
865 struct allocdirect *, struct freeblks *);
866 static int check_inode_unwritten(struct inodedep *);
867 static int free_inodedep(struct inodedep *);
868 static void freework_freeblock(struct freework *);
869 static void freework_enqueue(struct freework *);
870 static int handle_workitem_freeblocks(struct freeblks *, int);
871 static int handle_complete_freeblocks(struct freeblks *, int);
872 static void handle_workitem_indirblk(struct freework *);
873 static void handle_written_freework(struct freework *);
874 static void merge_inode_lists(struct allocdirectlst *,struct allocdirectlst *);
875 static struct worklist *jnewblk_merge(struct worklist *, struct worklist *,
877 static struct freefrag *setup_allocindir_phase2(struct buf *, struct inode *,
878 struct inodedep *, struct allocindir *, ufs_lbn_t);
879 static struct allocindir *newallocindir(struct inode *, int, ufs2_daddr_t,
880 ufs2_daddr_t, ufs_lbn_t);
881 static void handle_workitem_freefrag(struct freefrag *);
882 static struct freefrag *newfreefrag(struct inode *, ufs2_daddr_t, long,
884 static void allocdirect_merge(struct allocdirectlst *,
885 struct allocdirect *, struct allocdirect *);
886 static struct freefrag *allocindir_merge(struct allocindir *,
887 struct allocindir *);
888 static int bmsafemap_find(struct bmsafemap_hashhead *, int,
889 struct bmsafemap **);
890 static struct bmsafemap *bmsafemap_lookup(struct mount *, struct buf *,
891 int cg, struct bmsafemap *);
892 static int newblk_find(struct newblk_hashhead *, ufs2_daddr_t, int,
894 static int newblk_lookup(struct mount *, ufs2_daddr_t, int, struct newblk **);
895 static int inodedep_find(struct inodedep_hashhead *, ino_t,
897 static int inodedep_lookup(struct mount *, ino_t, int, struct inodedep **);
898 static int pagedep_lookup(struct mount *, struct buf *bp, ino_t, ufs_lbn_t,
899 int, struct pagedep **);
900 static int pagedep_find(struct pagedep_hashhead *, ino_t, ufs_lbn_t,
902 static void pause_timer(void *);
903 static int request_cleanup(struct mount *, int);
904 static void schedule_cleanup(struct mount *);
905 static void softdep_ast_cleanup_proc(void);
906 static int process_worklist_item(struct mount *, int, int);
907 static void process_removes(struct vnode *);
908 static void process_truncates(struct vnode *);
909 static void jwork_move(struct workhead *, struct workhead *);
910 static void jwork_insert(struct workhead *, struct jsegdep *);
911 static void add_to_worklist(struct worklist *, int);
912 static void wake_worklist(struct worklist *);
913 static void wait_worklist(struct worklist *, char *);
914 static void remove_from_worklist(struct worklist *);
915 static void softdep_flush(void *);
916 static void softdep_flushjournal(struct mount *);
917 static int softdep_speedup(struct ufsmount *);
918 static void worklist_speedup(struct mount *);
919 static int journal_mount(struct mount *, struct fs *, struct ucred *);
920 static void journal_unmount(struct ufsmount *);
921 static int journal_space(struct ufsmount *, int);
922 static void journal_suspend(struct ufsmount *);
923 static int journal_unsuspend(struct ufsmount *ump);
924 static void softdep_prelink(struct vnode *, struct vnode *);
925 static void add_to_journal(struct worklist *);
926 static void remove_from_journal(struct worklist *);
927 static bool softdep_excess_items(struct ufsmount *, int);
928 static void softdep_process_journal(struct mount *, struct worklist *, int);
929 static struct jremref *newjremref(struct dirrem *, struct inode *,
930 struct inode *ip, off_t, nlink_t);
931 static struct jaddref *newjaddref(struct inode *, ino_t, off_t, int16_t,
933 static inline void newinoref(struct inoref *, ino_t, ino_t, off_t, nlink_t,
935 static inline struct jsegdep *inoref_jseg(struct inoref *);
936 static struct jmvref *newjmvref(struct inode *, ino_t, off_t, off_t);
937 static struct jfreeblk *newjfreeblk(struct freeblks *, ufs_lbn_t,
939 static void adjust_newfreework(struct freeblks *, int);
940 static struct jtrunc *newjtrunc(struct freeblks *, off_t, int);
941 static void move_newblock_dep(struct jaddref *, struct inodedep *);
942 static void cancel_jfreeblk(struct freeblks *, ufs2_daddr_t);
943 static struct jfreefrag *newjfreefrag(struct freefrag *, struct inode *,
944 ufs2_daddr_t, long, ufs_lbn_t);
945 static struct freework *newfreework(struct ufsmount *, struct freeblks *,
946 struct freework *, ufs_lbn_t, ufs2_daddr_t, int, int, int);
947 static int jwait(struct worklist *, int);
948 static struct inodedep *inodedep_lookup_ip(struct inode *);
949 static int bmsafemap_backgroundwrite(struct bmsafemap *, struct buf *);
950 static struct freefile *handle_bufwait(struct inodedep *, struct workhead *);
951 static void handle_jwork(struct workhead *);
952 static struct mkdir *setup_newdir(struct diradd *, ino_t, ino_t, struct buf *,
954 static struct jblocks *jblocks_create(void);
955 static ufs2_daddr_t jblocks_alloc(struct jblocks *, int, int *);
956 static void jblocks_free(struct jblocks *, struct mount *, int);
957 static void jblocks_destroy(struct jblocks *);
958 static void jblocks_add(struct jblocks *, ufs2_daddr_t, int);
961 * Exported softdep operations.
963 static void softdep_disk_io_initiation(struct buf *);
964 static void softdep_disk_write_complete(struct buf *);
965 static void softdep_deallocate_dependencies(struct buf *);
966 static int softdep_count_dependencies(struct buf *bp, int);
969 * Global lock over all of soft updates.
971 static struct mtx lk;
972 MTX_SYSINIT(softdep_lock, &lk, "Global Softdep Lock", MTX_DEF);
974 #define ACQUIRE_GBLLOCK(lk) mtx_lock(lk)
975 #define FREE_GBLLOCK(lk) mtx_unlock(lk)
976 #define GBLLOCK_OWNED(lk) mtx_assert((lk), MA_OWNED)
979 * Per-filesystem soft-updates locking.
981 #define LOCK_PTR(ump) (&(ump)->um_softdep->sd_fslock)
982 #define TRY_ACQUIRE_LOCK(ump) rw_try_wlock(&(ump)->um_softdep->sd_fslock)
983 #define ACQUIRE_LOCK(ump) rw_wlock(&(ump)->um_softdep->sd_fslock)
984 #define FREE_LOCK(ump) rw_wunlock(&(ump)->um_softdep->sd_fslock)
985 #define LOCK_OWNED(ump) rw_assert(&(ump)->um_softdep->sd_fslock, \
988 #define BUF_AREC(bp) lockallowrecurse(&(bp)->b_lock)
989 #define BUF_NOREC(bp) lockdisablerecurse(&(bp)->b_lock)
992 * Worklist queue management.
993 * These routines require that the lock be held.
995 #ifndef /* NOT */ DEBUG
996 #define WORKLIST_INSERT(head, item) do { \
997 (item)->wk_state |= ONWORKLIST; \
998 LIST_INSERT_HEAD(head, item, wk_list); \
1000 #define WORKLIST_REMOVE(item) do { \
1001 (item)->wk_state &= ~ONWORKLIST; \
1002 LIST_REMOVE(item, wk_list); \
1004 #define WORKLIST_INSERT_UNLOCKED WORKLIST_INSERT
1005 #define WORKLIST_REMOVE_UNLOCKED WORKLIST_REMOVE
1008 static void worklist_insert(struct workhead *, struct worklist *, int);
1009 static void worklist_remove(struct worklist *, int);
1011 #define WORKLIST_INSERT(head, item) worklist_insert(head, item, 1)
1012 #define WORKLIST_INSERT_UNLOCKED(head, item) worklist_insert(head, item, 0)
1013 #define WORKLIST_REMOVE(item) worklist_remove(item, 1)
1014 #define WORKLIST_REMOVE_UNLOCKED(item) worklist_remove(item, 0)
1017 worklist_insert(head, item, locked)
1018 struct workhead *head;
1019 struct worklist *item;
1024 LOCK_OWNED(VFSTOUFS(item->wk_mp));
1025 if (item->wk_state & ONWORKLIST)
1026 panic("worklist_insert: %p %s(0x%X) already on list",
1027 item, TYPENAME(item->wk_type), item->wk_state);
1028 item->wk_state |= ONWORKLIST;
1029 LIST_INSERT_HEAD(head, item, wk_list);
1033 worklist_remove(item, locked)
1034 struct worklist *item;
1039 LOCK_OWNED(VFSTOUFS(item->wk_mp));
1040 if ((item->wk_state & ONWORKLIST) == 0)
1041 panic("worklist_remove: %p %s(0x%X) not on list",
1042 item, TYPENAME(item->wk_type), item->wk_state);
1043 item->wk_state &= ~ONWORKLIST;
1044 LIST_REMOVE(item, wk_list);
1049 * Merge two jsegdeps keeping only the oldest one as newer references
1050 * can't be discarded until after older references.
1052 static inline struct jsegdep *
1053 jsegdep_merge(struct jsegdep *one, struct jsegdep *two)
1055 struct jsegdep *swp;
1060 if (one->jd_seg->js_seq > two->jd_seg->js_seq) {
1065 WORKLIST_REMOVE(&two->jd_list);
1072 * If two freedeps are compatible free one to reduce list size.
1074 static inline struct freedep *
1075 freedep_merge(struct freedep *one, struct freedep *two)
1080 if (one->fd_freework == two->fd_freework) {
1081 WORKLIST_REMOVE(&two->fd_list);
1088 * Move journal work from one list to another. Duplicate freedeps and
1089 * jsegdeps are coalesced to keep the lists as small as possible.
1092 jwork_move(dst, src)
1093 struct workhead *dst;
1094 struct workhead *src;
1096 struct freedep *freedep;
1097 struct jsegdep *jsegdep;
1098 struct worklist *wkn;
1099 struct worklist *wk;
1102 ("jwork_move: dst == src"));
1105 LIST_FOREACH_SAFE(wk, dst, wk_list, wkn) {
1106 if (wk->wk_type == D_JSEGDEP)
1107 jsegdep = jsegdep_merge(WK_JSEGDEP(wk), jsegdep);
1108 else if (wk->wk_type == D_FREEDEP)
1109 freedep = freedep_merge(WK_FREEDEP(wk), freedep);
1112 while ((wk = LIST_FIRST(src)) != NULL) {
1113 WORKLIST_REMOVE(wk);
1114 WORKLIST_INSERT(dst, wk);
1115 if (wk->wk_type == D_JSEGDEP) {
1116 jsegdep = jsegdep_merge(WK_JSEGDEP(wk), jsegdep);
1119 if (wk->wk_type == D_FREEDEP)
1120 freedep = freedep_merge(WK_FREEDEP(wk), freedep);
1125 jwork_insert(dst, jsegdep)
1126 struct workhead *dst;
1127 struct jsegdep *jsegdep;
1129 struct jsegdep *jsegdepn;
1130 struct worklist *wk;
1132 LIST_FOREACH(wk, dst, wk_list)
1133 if (wk->wk_type == D_JSEGDEP)
1136 WORKLIST_INSERT(dst, &jsegdep->jd_list);
1139 jsegdepn = WK_JSEGDEP(wk);
1140 if (jsegdep->jd_seg->js_seq < jsegdepn->jd_seg->js_seq) {
1141 WORKLIST_REMOVE(wk);
1142 free_jsegdep(jsegdepn);
1143 WORKLIST_INSERT(dst, &jsegdep->jd_list);
1145 free_jsegdep(jsegdep);
1149 * Routines for tracking and managing workitems.
1151 static void workitem_free(struct worklist *, int);
1152 static void workitem_alloc(struct worklist *, int, struct mount *);
1153 static void workitem_reassign(struct worklist *, int);
1155 #define WORKITEM_FREE(item, type) \
1156 workitem_free((struct worklist *)(item), (type))
1157 #define WORKITEM_REASSIGN(item, type) \
1158 workitem_reassign((struct worklist *)(item), (type))
1161 workitem_free(item, type)
1162 struct worklist *item;
1165 struct ufsmount *ump;
1168 if (item->wk_state & ONWORKLIST)
1169 panic("workitem_free: %s(0x%X) still on list",
1170 TYPENAME(item->wk_type), item->wk_state);
1171 if (item->wk_type != type && type != D_NEWBLK)
1172 panic("workitem_free: type mismatch %s != %s",
1173 TYPENAME(item->wk_type), TYPENAME(type));
1175 if (item->wk_state & IOWAITING)
1177 ump = VFSTOUFS(item->wk_mp);
1179 KASSERT(ump->softdep_deps > 0,
1180 ("workitem_free: %s: softdep_deps going negative",
1181 ump->um_fs->fs_fsmnt));
1182 if (--ump->softdep_deps == 0 && ump->softdep_req)
1183 wakeup(&ump->softdep_deps);
1184 KASSERT(dep_current[item->wk_type] > 0,
1185 ("workitem_free: %s: dep_current[%s] going negative",
1186 ump->um_fs->fs_fsmnt, TYPENAME(item->wk_type)));
1187 KASSERT(ump->softdep_curdeps[item->wk_type] > 0,
1188 ("workitem_free: %s: softdep_curdeps[%s] going negative",
1189 ump->um_fs->fs_fsmnt, TYPENAME(item->wk_type)));
1190 atomic_subtract_long(&dep_current[item->wk_type], 1);
1191 ump->softdep_curdeps[item->wk_type] -= 1;
1192 free(item, DtoM(type));
1196 workitem_alloc(item, type, mp)
1197 struct worklist *item;
1201 struct ufsmount *ump;
1203 item->wk_type = type;
1208 ACQUIRE_GBLLOCK(&lk);
1209 dep_current[type]++;
1210 if (dep_current[type] > dep_highuse[type])
1211 dep_highuse[type] = dep_current[type];
1215 ump->softdep_curdeps[type] += 1;
1216 ump->softdep_deps++;
1217 ump->softdep_accdeps++;
1222 workitem_reassign(item, newtype)
1223 struct worklist *item;
1226 struct ufsmount *ump;
1228 ump = VFSTOUFS(item->wk_mp);
1230 KASSERT(ump->softdep_curdeps[item->wk_type] > 0,
1231 ("workitem_reassign: %s: softdep_curdeps[%s] going negative",
1232 VFSTOUFS(item->wk_mp)->um_fs->fs_fsmnt, TYPENAME(item->wk_type)));
1233 ump->softdep_curdeps[item->wk_type] -= 1;
1234 ump->softdep_curdeps[newtype] += 1;
1235 KASSERT(dep_current[item->wk_type] > 0,
1236 ("workitem_reassign: %s: dep_current[%s] going negative",
1237 VFSTOUFS(item->wk_mp)->um_fs->fs_fsmnt, TYPENAME(item->wk_type)));
1238 ACQUIRE_GBLLOCK(&lk);
1239 dep_current[newtype]++;
1240 dep_current[item->wk_type]--;
1241 if (dep_current[newtype] > dep_highuse[newtype])
1242 dep_highuse[newtype] = dep_current[newtype];
1243 dep_total[newtype]++;
1245 item->wk_type = newtype;
1249 * Workitem queue management
1251 static int max_softdeps; /* maximum number of structs before slowdown */
1252 static int tickdelay = 2; /* number of ticks to pause during slowdown */
1253 static int proc_waiting; /* tracks whether we have a timeout posted */
1254 static int *stat_countp; /* statistic to count in proc_waiting timeout */
1255 static struct callout softdep_callout;
1256 static int req_clear_inodedeps; /* syncer process flush some inodedeps */
1257 static int req_clear_remove; /* syncer process flush some freeblks */
1258 static int softdep_flushcache = 0; /* Should we do BIO_FLUSH? */
1261 * runtime statistics
1263 static int stat_flush_threads; /* number of softdep flushing threads */
1264 static int stat_worklist_push; /* number of worklist cleanups */
1265 static int stat_blk_limit_push; /* number of times block limit neared */
1266 static int stat_ino_limit_push; /* number of times inode limit neared */
1267 static int stat_blk_limit_hit; /* number of times block slowdown imposed */
1268 static int stat_ino_limit_hit; /* number of times inode slowdown imposed */
1269 static int stat_sync_limit_hit; /* number of synchronous slowdowns imposed */
1270 static int stat_indir_blk_ptrs; /* bufs redirtied as indir ptrs not written */
1271 static int stat_inode_bitmap; /* bufs redirtied as inode bitmap not written */
1272 static int stat_direct_blk_ptrs;/* bufs redirtied as direct ptrs not written */
1273 static int stat_dir_entry; /* bufs redirtied as dir entry cannot write */
1274 static int stat_jaddref; /* bufs redirtied as ino bitmap can not write */
1275 static int stat_jnewblk; /* bufs redirtied as blk bitmap can not write */
1276 static int stat_journal_min; /* Times hit journal min threshold */
1277 static int stat_journal_low; /* Times hit journal low threshold */
1278 static int stat_journal_wait; /* Times blocked in jwait(). */
1279 static int stat_jwait_filepage; /* Times blocked in jwait() for filepage. */
1280 static int stat_jwait_freeblks; /* Times blocked in jwait() for freeblks. */
1281 static int stat_jwait_inode; /* Times blocked in jwait() for inodes. */
1282 static int stat_jwait_newblk; /* Times blocked in jwait() for newblks. */
1283 static int stat_cleanup_high_delay; /* Maximum cleanup delay (in ticks) */
1284 static int stat_cleanup_blkrequests; /* Number of block cleanup requests */
1285 static int stat_cleanup_inorequests; /* Number of inode cleanup requests */
1286 static int stat_cleanup_retries; /* Number of cleanups that needed to flush */
1287 static int stat_cleanup_failures; /* Number of cleanup requests that failed */
1288 static int stat_emptyjblocks; /* Number of potentially empty journal blocks */
1290 SYSCTL_INT(_debug_softdep, OID_AUTO, max_softdeps, CTLFLAG_RW,
1291 &max_softdeps, 0, "");
1292 SYSCTL_INT(_debug_softdep, OID_AUTO, tickdelay, CTLFLAG_RW,
1294 SYSCTL_INT(_debug_softdep, OID_AUTO, flush_threads, CTLFLAG_RD,
1295 &stat_flush_threads, 0, "");
1296 SYSCTL_INT(_debug_softdep, OID_AUTO, worklist_push, CTLFLAG_RW,
1297 &stat_worklist_push, 0,"");
1298 SYSCTL_INT(_debug_softdep, OID_AUTO, blk_limit_push, CTLFLAG_RW,
1299 &stat_blk_limit_push, 0,"");
1300 SYSCTL_INT(_debug_softdep, OID_AUTO, ino_limit_push, CTLFLAG_RW,
1301 &stat_ino_limit_push, 0,"");
1302 SYSCTL_INT(_debug_softdep, OID_AUTO, blk_limit_hit, CTLFLAG_RW,
1303 &stat_blk_limit_hit, 0, "");
1304 SYSCTL_INT(_debug_softdep, OID_AUTO, ino_limit_hit, CTLFLAG_RW,
1305 &stat_ino_limit_hit, 0, "");
1306 SYSCTL_INT(_debug_softdep, OID_AUTO, sync_limit_hit, CTLFLAG_RW,
1307 &stat_sync_limit_hit, 0, "");
1308 SYSCTL_INT(_debug_softdep, OID_AUTO, indir_blk_ptrs, CTLFLAG_RW,
1309 &stat_indir_blk_ptrs, 0, "");
1310 SYSCTL_INT(_debug_softdep, OID_AUTO, inode_bitmap, CTLFLAG_RW,
1311 &stat_inode_bitmap, 0, "");
1312 SYSCTL_INT(_debug_softdep, OID_AUTO, direct_blk_ptrs, CTLFLAG_RW,
1313 &stat_direct_blk_ptrs, 0, "");
1314 SYSCTL_INT(_debug_softdep, OID_AUTO, dir_entry, CTLFLAG_RW,
1315 &stat_dir_entry, 0, "");
1316 SYSCTL_INT(_debug_softdep, OID_AUTO, jaddref_rollback, CTLFLAG_RW,
1317 &stat_jaddref, 0, "");
1318 SYSCTL_INT(_debug_softdep, OID_AUTO, jnewblk_rollback, CTLFLAG_RW,
1319 &stat_jnewblk, 0, "");
1320 SYSCTL_INT(_debug_softdep, OID_AUTO, journal_low, CTLFLAG_RW,
1321 &stat_journal_low, 0, "");
1322 SYSCTL_INT(_debug_softdep, OID_AUTO, journal_min, CTLFLAG_RW,
1323 &stat_journal_min, 0, "");
1324 SYSCTL_INT(_debug_softdep, OID_AUTO, journal_wait, CTLFLAG_RW,
1325 &stat_journal_wait, 0, "");
1326 SYSCTL_INT(_debug_softdep, OID_AUTO, jwait_filepage, CTLFLAG_RW,
1327 &stat_jwait_filepage, 0, "");
1328 SYSCTL_INT(_debug_softdep, OID_AUTO, jwait_freeblks, CTLFLAG_RW,
1329 &stat_jwait_freeblks, 0, "");
1330 SYSCTL_INT(_debug_softdep, OID_AUTO, jwait_inode, CTLFLAG_RW,
1331 &stat_jwait_inode, 0, "");
1332 SYSCTL_INT(_debug_softdep, OID_AUTO, jwait_newblk, CTLFLAG_RW,
1333 &stat_jwait_newblk, 0, "");
1334 SYSCTL_INT(_debug_softdep, OID_AUTO, cleanup_blkrequests, CTLFLAG_RW,
1335 &stat_cleanup_blkrequests, 0, "");
1336 SYSCTL_INT(_debug_softdep, OID_AUTO, cleanup_inorequests, CTLFLAG_RW,
1337 &stat_cleanup_inorequests, 0, "");
1338 SYSCTL_INT(_debug_softdep, OID_AUTO, cleanup_high_delay, CTLFLAG_RW,
1339 &stat_cleanup_high_delay, 0, "");
1340 SYSCTL_INT(_debug_softdep, OID_AUTO, cleanup_retries, CTLFLAG_RW,
1341 &stat_cleanup_retries, 0, "");
1342 SYSCTL_INT(_debug_softdep, OID_AUTO, cleanup_failures, CTLFLAG_RW,
1343 &stat_cleanup_failures, 0, "");
1344 SYSCTL_INT(_debug_softdep, OID_AUTO, flushcache, CTLFLAG_RW,
1345 &softdep_flushcache, 0, "");
1346 SYSCTL_INT(_debug_softdep, OID_AUTO, emptyjblocks, CTLFLAG_RD,
1347 &stat_emptyjblocks, 0, "");
1349 SYSCTL_DECL(_vfs_ffs);
1351 /* Whether to recompute the summary at mount time */
1352 static int compute_summary_at_mount = 0;
1353 SYSCTL_INT(_vfs_ffs, OID_AUTO, compute_summary_at_mount, CTLFLAG_RW,
1354 &compute_summary_at_mount, 0, "Recompute summary at mount");
1355 static int print_threads = 0;
1356 SYSCTL_INT(_debug_softdep, OID_AUTO, print_threads, CTLFLAG_RW,
1357 &print_threads, 0, "Notify flusher thread start/stop");
1359 /* List of all filesystems mounted with soft updates */
1360 static TAILQ_HEAD(, mount_softdeps) softdepmounts;
1363 * This function cleans the worklist for a filesystem.
1364 * Each filesystem running with soft dependencies gets its own
1365 * thread to run in this function. The thread is started up in
1366 * softdep_mount and shutdown in softdep_unmount. They show up
1367 * as part of the kernel "bufdaemon" process whose process
1368 * entry is available in bufdaemonproc.
1370 static int searchfailed;
1371 extern struct proc *bufdaemonproc;
1378 struct ufsmount *ump;
1381 td->td_pflags |= TDP_NORUNNINGBUF;
1382 mp = (struct mount *)addr;
1384 atomic_add_int(&stat_flush_threads, 1);
1386 ump->softdep_flags &= ~FLUSH_STARTING;
1387 wakeup(&ump->softdep_flushtd);
1389 if (print_threads) {
1390 if (stat_flush_threads == 1)
1391 printf("Running %s at pid %d\n", bufdaemonproc->p_comm,
1392 bufdaemonproc->p_pid);
1393 printf("Start thread %s\n", td->td_name);
1396 while (softdep_process_worklist(mp, 0) > 0 ||
1398 VFSTOUFS(mp)->softdep_jblocks->jb_suspended))
1399 kthread_suspend_check();
1401 if ((ump->softdep_flags & (FLUSH_CLEANUP | FLUSH_EXIT)) == 0)
1402 msleep(&ump->softdep_flushtd, LOCK_PTR(ump), PVM,
1404 ump->softdep_flags &= ~FLUSH_CLEANUP;
1406 * Check to see if we are done and need to exit.
1408 if ((ump->softdep_flags & FLUSH_EXIT) == 0) {
1412 ump->softdep_flags &= ~FLUSH_EXIT;
1414 wakeup(&ump->softdep_flags);
1416 printf("Stop thread %s: searchfailed %d, did cleanups %d\n", td->td_name, searchfailed, ump->um_softdep->sd_cleanups);
1417 atomic_subtract_int(&stat_flush_threads, 1);
1419 panic("kthread_exit failed\n");
1424 worklist_speedup(mp)
1427 struct ufsmount *ump;
1431 if ((ump->softdep_flags & (FLUSH_CLEANUP | FLUSH_EXIT)) == 0)
1432 ump->softdep_flags |= FLUSH_CLEANUP;
1433 wakeup(&ump->softdep_flushtd);
1437 softdep_speedup(ump)
1438 struct ufsmount *ump;
1440 struct ufsmount *altump;
1441 struct mount_softdeps *sdp;
1444 worklist_speedup(ump->um_mountp);
1447 * If we have global shortages, then we need other
1448 * filesystems to help with the cleanup. Here we wakeup a
1449 * flusher thread for a filesystem that is over its fair
1450 * share of resources.
1452 if (req_clear_inodedeps || req_clear_remove) {
1453 ACQUIRE_GBLLOCK(&lk);
1454 TAILQ_FOREACH(sdp, &softdepmounts, sd_next) {
1455 if ((altump = sdp->sd_ump) == ump)
1457 if (((req_clear_inodedeps &&
1458 altump->softdep_curdeps[D_INODEDEP] >
1459 max_softdeps / stat_flush_threads) ||
1460 (req_clear_remove &&
1461 altump->softdep_curdeps[D_DIRREM] >
1462 (max_softdeps / 2) / stat_flush_threads)) &&
1463 TRY_ACQUIRE_LOCK(altump))
1471 * Move to the end of the list so we pick a
1472 * different one on out next try.
1474 TAILQ_REMOVE(&softdepmounts, sdp, sd_next);
1475 TAILQ_INSERT_TAIL(&softdepmounts, sdp, sd_next);
1477 if ((altump->softdep_flags &
1478 (FLUSH_CLEANUP | FLUSH_EXIT)) == 0)
1479 altump->softdep_flags |= FLUSH_CLEANUP;
1480 altump->um_softdep->sd_cleanups++;
1481 wakeup(&altump->softdep_flushtd);
1485 return (speedup_syncer());
1489 * Add an item to the end of the work queue.
1490 * This routine requires that the lock be held.
1491 * This is the only routine that adds items to the list.
1492 * The following routine is the only one that removes items
1493 * and does so in order from first to last.
1496 #define WK_HEAD 0x0001 /* Add to HEAD. */
1497 #define WK_NODELAY 0x0002 /* Process immediately. */
1500 add_to_worklist(wk, flags)
1501 struct worklist *wk;
1504 struct ufsmount *ump;
1506 ump = VFSTOUFS(wk->wk_mp);
1508 if (wk->wk_state & ONWORKLIST)
1509 panic("add_to_worklist: %s(0x%X) already on list",
1510 TYPENAME(wk->wk_type), wk->wk_state);
1511 wk->wk_state |= ONWORKLIST;
1512 if (ump->softdep_on_worklist == 0) {
1513 LIST_INSERT_HEAD(&ump->softdep_workitem_pending, wk, wk_list);
1514 ump->softdep_worklist_tail = wk;
1515 } else if (flags & WK_HEAD) {
1516 LIST_INSERT_HEAD(&ump->softdep_workitem_pending, wk, wk_list);
1518 LIST_INSERT_AFTER(ump->softdep_worklist_tail, wk, wk_list);
1519 ump->softdep_worklist_tail = wk;
1521 ump->softdep_on_worklist += 1;
1522 if (flags & WK_NODELAY)
1523 worklist_speedup(wk->wk_mp);
1527 * Remove the item to be processed. If we are removing the last
1528 * item on the list, we need to recalculate the tail pointer.
1531 remove_from_worklist(wk)
1532 struct worklist *wk;
1534 struct ufsmount *ump;
1536 ump = VFSTOUFS(wk->wk_mp);
1537 WORKLIST_REMOVE(wk);
1538 if (ump->softdep_worklist_tail == wk)
1539 ump->softdep_worklist_tail =
1540 (struct worklist *)wk->wk_list.le_prev;
1541 ump->softdep_on_worklist -= 1;
1546 struct worklist *wk;
1548 if (wk->wk_state & IOWAITING) {
1549 wk->wk_state &= ~IOWAITING;
1555 wait_worklist(wk, wmesg)
1556 struct worklist *wk;
1559 struct ufsmount *ump;
1561 ump = VFSTOUFS(wk->wk_mp);
1562 wk->wk_state |= IOWAITING;
1563 msleep(wk, LOCK_PTR(ump), PVM, wmesg, 0);
1567 * Process that runs once per second to handle items in the background queue.
1569 * Note that we ensure that everything is done in the order in which they
1570 * appear in the queue. The code below depends on this property to ensure
1571 * that blocks of a file are freed before the inode itself is freed. This
1572 * ordering ensures that no new <vfsid, inum, lbn> triples will be generated
1573 * until all the old ones have been purged from the dependency lists.
1576 softdep_process_worklist(mp, full)
1581 struct ufsmount *ump;
1584 KASSERT(mp != NULL, ("softdep_process_worklist: NULL mp"));
1585 if (MOUNTEDSOFTDEP(mp) == 0)
1590 starttime = time_second;
1591 softdep_process_journal(mp, NULL, full ? MNT_WAIT : 0);
1592 check_clear_deps(mp);
1593 while (ump->softdep_on_worklist > 0) {
1594 if ((cnt = process_worklist_item(mp, 10, LK_NOWAIT)) == 0)
1598 check_clear_deps(mp);
1600 * We do not generally want to stop for buffer space, but if
1601 * we are really being a buffer hog, we will stop and wait.
1603 if (should_yield()) {
1605 kern_yield(PRI_USER);
1610 * Never allow processing to run for more than one
1611 * second. This gives the syncer thread the opportunity
1612 * to pause if appropriate.
1614 if (!full && starttime != time_second)
1618 journal_unsuspend(ump);
1624 * Process all removes associated with a vnode if we are running out of
1625 * journal space. Any other process which attempts to flush these will
1626 * be unable as we have the vnodes locked.
1632 struct inodedep *inodedep;
1633 struct dirrem *dirrem;
1634 struct ufsmount *ump;
1641 inum = VTOI(vp)->i_number;
1644 if (inodedep_lookup(mp, inum, 0, &inodedep) == 0)
1646 LIST_FOREACH(dirrem, &inodedep->id_dirremhd, dm_inonext) {
1648 * If another thread is trying to lock this vnode
1649 * it will fail but we must wait for it to do so
1650 * before we can proceed.
1652 if (dirrem->dm_state & INPROGRESS) {
1653 wait_worklist(&dirrem->dm_list, "pwrwait");
1656 if ((dirrem->dm_state & (COMPLETE | ONWORKLIST)) ==
1657 (COMPLETE | ONWORKLIST))
1662 remove_from_worklist(&dirrem->dm_list);
1664 if (vn_start_secondary_write(NULL, &mp, V_NOWAIT))
1665 panic("process_removes: suspended filesystem");
1666 handle_workitem_remove(dirrem, 0);
1667 vn_finished_secondary_write(mp);
1673 * Process all truncations associated with a vnode if we are running out
1674 * of journal space. This is called when the vnode lock is already held
1675 * and no other process can clear the truncation. This function returns
1676 * a value greater than zero if it did any work.
1679 process_truncates(vp)
1682 struct inodedep *inodedep;
1683 struct freeblks *freeblks;
1684 struct ufsmount *ump;
1692 inum = VTOI(vp)->i_number;
1694 if (inodedep_lookup(mp, inum, 0, &inodedep) == 0)
1697 TAILQ_FOREACH(freeblks, &inodedep->id_freeblklst, fb_next) {
1698 /* Journal entries not yet written. */
1699 if (!LIST_EMPTY(&freeblks->fb_jblkdephd)) {
1701 &freeblks->fb_jblkdephd)->jb_list,
1705 /* Another thread is executing this item. */
1706 if (freeblks->fb_state & INPROGRESS) {
1707 wait_worklist(&freeblks->fb_list, "ptrwait");
1710 /* Freeblks is waiting on a inode write. */
1711 if ((freeblks->fb_state & COMPLETE) == 0) {
1717 if ((freeblks->fb_state & (ALLCOMPLETE | ONWORKLIST)) ==
1718 (ALLCOMPLETE | ONWORKLIST)) {
1719 remove_from_worklist(&freeblks->fb_list);
1720 freeblks->fb_state |= INPROGRESS;
1722 if (vn_start_secondary_write(NULL, &mp,
1724 panic("process_truncates: "
1725 "suspended filesystem");
1726 handle_workitem_freeblocks(freeblks, 0);
1727 vn_finished_secondary_write(mp);
1731 if (freeblks->fb_cgwait)
1736 sync_cgs(mp, MNT_WAIT);
1737 ffs_sync_snap(mp, MNT_WAIT);
1741 if (freeblks == NULL)
1748 * Process one item on the worklist.
1751 process_worklist_item(mp, target, flags)
1756 struct worklist sentinel;
1757 struct worklist *wk;
1758 struct ufsmount *ump;
1762 KASSERT(mp != NULL, ("process_worklist_item: NULL mp"));
1764 * If we are being called because of a process doing a
1765 * copy-on-write, then it is not safe to write as we may
1766 * recurse into the copy-on-write routine.
1768 if (curthread->td_pflags & TDP_COWINPROGRESS)
1770 PHOLD(curproc); /* Don't let the stack go away. */
1774 sentinel.wk_mp = NULL;
1775 sentinel.wk_type = D_SENTINEL;
1776 LIST_INSERT_HEAD(&ump->softdep_workitem_pending, &sentinel, wk_list);
1777 for (wk = LIST_NEXT(&sentinel, wk_list); wk != NULL;
1778 wk = LIST_NEXT(&sentinel, wk_list)) {
1779 if (wk->wk_type == D_SENTINEL) {
1780 LIST_REMOVE(&sentinel, wk_list);
1781 LIST_INSERT_AFTER(wk, &sentinel, wk_list);
1784 if (wk->wk_state & INPROGRESS)
1785 panic("process_worklist_item: %p already in progress.",
1787 wk->wk_state |= INPROGRESS;
1788 remove_from_worklist(wk);
1790 if (vn_start_secondary_write(NULL, &mp, V_NOWAIT))
1791 panic("process_worklist_item: suspended filesystem");
1792 switch (wk->wk_type) {
1794 /* removal of a directory entry */
1795 error = handle_workitem_remove(WK_DIRREM(wk), flags);
1799 /* releasing blocks and/or fragments from a file */
1800 error = handle_workitem_freeblocks(WK_FREEBLKS(wk),
1805 /* releasing a fragment when replaced as a file grows */
1806 handle_workitem_freefrag(WK_FREEFRAG(wk));
1811 /* releasing an inode when its link count drops to 0 */
1812 handle_workitem_freefile(WK_FREEFILE(wk));
1817 panic("%s_process_worklist: Unknown type %s",
1818 "softdep", TYPENAME(wk->wk_type));
1821 vn_finished_secondary_write(mp);
1824 if (++matchcnt == target)
1829 * We have to retry the worklist item later. Wake up any
1830 * waiters who may be able to complete it immediately and
1831 * add the item back to the head so we don't try to execute
1834 wk->wk_state &= ~INPROGRESS;
1836 add_to_worklist(wk, WK_HEAD);
1838 LIST_REMOVE(&sentinel, wk_list);
1839 /* Sentinal could've become the tail from remove_from_worklist. */
1840 if (ump->softdep_worklist_tail == &sentinel)
1841 ump->softdep_worklist_tail =
1842 (struct worklist *)sentinel.wk_list.le_prev;
1848 * Move dependencies from one buffer to another.
1851 softdep_move_dependencies(oldbp, newbp)
1855 struct worklist *wk, *wktail;
1856 struct ufsmount *ump;
1859 if ((wk = LIST_FIRST(&oldbp->b_dep)) == NULL)
1861 KASSERT(MOUNTEDSOFTDEP(wk->wk_mp) != 0,
1862 ("softdep_move_dependencies called on non-softdep filesystem"));
1865 ump = VFSTOUFS(wk->wk_mp);
1867 while ((wk = LIST_FIRST(&oldbp->b_dep)) != NULL) {
1868 LIST_REMOVE(wk, wk_list);
1869 if (wk->wk_type == D_BMSAFEMAP &&
1870 bmsafemap_backgroundwrite(WK_BMSAFEMAP(wk), newbp))
1873 LIST_INSERT_HEAD(&newbp->b_dep, wk, wk_list);
1875 LIST_INSERT_AFTER(wktail, wk, wk_list);
1884 * Purge the work list of all items associated with a particular mount point.
1887 softdep_flushworklist(oldmnt, countp, td)
1888 struct mount *oldmnt;
1892 struct vnode *devvp;
1893 struct ufsmount *ump;
1897 * Alternately flush the block device associated with the mount
1898 * point and process any dependencies that the flushing
1899 * creates. We continue until no more worklist dependencies
1904 ump = VFSTOUFS(oldmnt);
1905 devvp = ump->um_devvp;
1906 while ((count = softdep_process_worklist(oldmnt, 1)) > 0) {
1908 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
1909 error = VOP_FSYNC(devvp, MNT_WAIT, td);
1910 VOP_UNLOCK(devvp, 0);
1917 #define SU_WAITIDLE_RETRIES 20
1919 softdep_waitidle(struct mount *mp, int flags __unused)
1921 struct ufsmount *ump;
1922 struct vnode *devvp;
1927 devvp = ump->um_devvp;
1931 for (i = 0; i < SU_WAITIDLE_RETRIES && ump->softdep_deps != 0; i++) {
1932 ump->softdep_req = 1;
1933 KASSERT((flags & FORCECLOSE) == 0 ||
1934 ump->softdep_on_worklist == 0,
1935 ("softdep_waitidle: work added after flush"));
1936 msleep(&ump->softdep_deps, LOCK_PTR(ump), PVM | PDROP,
1937 "softdeps", 10 * hz);
1938 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
1939 error = VOP_FSYNC(devvp, MNT_WAIT, td);
1940 VOP_UNLOCK(devvp, 0);
1945 ump->softdep_req = 0;
1946 if (i == SU_WAITIDLE_RETRIES && error == 0 && ump->softdep_deps != 0) {
1948 printf("softdep_waitidle: Failed to flush worklist for %p\n",
1956 * Flush all vnodes and worklist items associated with a specified mount point.
1959 softdep_flushfiles(oldmnt, flags, td)
1960 struct mount *oldmnt;
1965 struct ufsmount *ump;
1968 int error, early, depcount, loopcnt, retry_flush_count, retry;
1971 KASSERT(MOUNTEDSOFTDEP(oldmnt) != 0,
1972 ("softdep_flushfiles called on non-softdep filesystem"));
1974 retry_flush_count = 3;
1979 * Alternately flush the vnodes associated with the mount
1980 * point and process any dependencies that the flushing
1981 * creates. In theory, this loop can happen at most twice,
1982 * but we give it a few extra just to be sure.
1984 for (; loopcnt > 0; loopcnt--) {
1986 * Do another flush in case any vnodes were brought in
1987 * as part of the cleanup operations.
1989 early = retry_flush_count == 1 || (oldmnt->mnt_kern_flag &
1990 MNTK_UNMOUNT) == 0 ? 0 : EARLYFLUSH;
1991 if ((error = ffs_flushfiles(oldmnt, flags | early, td)) != 0)
1993 if ((error = softdep_flushworklist(oldmnt, &depcount, td)) != 0 ||
1998 * If we are unmounting then it is an error to fail. If we
1999 * are simply trying to downgrade to read-only, then filesystem
2000 * activity can keep us busy forever, so we just fail with EBUSY.
2003 if (oldmnt->mnt_kern_flag & MNTK_UNMOUNT)
2004 panic("softdep_flushfiles: looping");
2008 error = softdep_waitidle(oldmnt, flags);
2010 if (oldmnt->mnt_kern_flag & MNTK_UNMOUNT) {
2013 KASSERT((oldmnt->mnt_kern_flag & MNTK_NOINSMNTQ) != 0,
2014 ("softdep_flushfiles: !MNTK_NOINSMNTQ"));
2015 morework = oldmnt->mnt_nvnodelistsize > 0;
2017 ump = VFSTOUFS(oldmnt);
2019 for (i = 0; i < MAXQUOTAS; i++) {
2020 if (ump->um_quotas[i] != NULLVP)
2026 if (--retry_flush_count > 0) {
2032 MNT_IUNLOCK(oldmnt);
2041 * Structure hashing.
2043 * There are four types of structures that can be looked up:
2044 * 1) pagedep structures identified by mount point, inode number,
2045 * and logical block.
2046 * 2) inodedep structures identified by mount point and inode number.
2047 * 3) newblk structures identified by mount point and
2048 * physical block number.
2049 * 4) bmsafemap structures identified by mount point and
2050 * cylinder group number.
2052 * The "pagedep" and "inodedep" dependency structures are hashed
2053 * separately from the file blocks and inodes to which they correspond.
2054 * This separation helps when the in-memory copy of an inode or
2055 * file block must be replaced. It also obviates the need to access
2056 * an inode or file page when simply updating (or de-allocating)
2057 * dependency structures. Lookup of newblk structures is needed to
2058 * find newly allocated blocks when trying to associate them with
2059 * their allocdirect or allocindir structure.
2061 * The lookup routines optionally create and hash a new instance when
2062 * an existing entry is not found. The bmsafemap lookup routine always
2063 * allocates a new structure if an existing one is not found.
2065 #define DEPALLOC 0x0001 /* allocate structure if lookup fails */
2068 * Structures and routines associated with pagedep caching.
2070 #define PAGEDEP_HASH(ump, inum, lbn) \
2071 (&(ump)->pagedep_hashtbl[((inum) + (lbn)) & (ump)->pagedep_hash_size])
2074 pagedep_find(pagedephd, ino, lbn, pagedeppp)
2075 struct pagedep_hashhead *pagedephd;
2078 struct pagedep **pagedeppp;
2080 struct pagedep *pagedep;
2082 LIST_FOREACH(pagedep, pagedephd, pd_hash) {
2083 if (ino == pagedep->pd_ino && lbn == pagedep->pd_lbn) {
2084 *pagedeppp = pagedep;
2092 * Look up a pagedep. Return 1 if found, 0 otherwise.
2093 * If not found, allocate if DEPALLOC flag is passed.
2094 * Found or allocated entry is returned in pagedeppp.
2095 * This routine must be called with splbio interrupts blocked.
2098 pagedep_lookup(mp, bp, ino, lbn, flags, pagedeppp)
2104 struct pagedep **pagedeppp;
2106 struct pagedep *pagedep;
2107 struct pagedep_hashhead *pagedephd;
2108 struct worklist *wk;
2109 struct ufsmount *ump;
2116 LIST_FOREACH(wk, &bp->b_dep, wk_list) {
2117 if (wk->wk_type == D_PAGEDEP) {
2118 *pagedeppp = WK_PAGEDEP(wk);
2123 pagedephd = PAGEDEP_HASH(ump, ino, lbn);
2124 ret = pagedep_find(pagedephd, ino, lbn, pagedeppp);
2126 if (((*pagedeppp)->pd_state & ONWORKLIST) == 0 && bp)
2127 WORKLIST_INSERT(&bp->b_dep, &(*pagedeppp)->pd_list);
2130 if ((flags & DEPALLOC) == 0)
2133 pagedep = malloc(sizeof(struct pagedep),
2134 M_PAGEDEP, M_SOFTDEP_FLAGS|M_ZERO);
2135 workitem_alloc(&pagedep->pd_list, D_PAGEDEP, mp);
2137 ret = pagedep_find(pagedephd, ino, lbn, pagedeppp);
2140 * This should never happen since we only create pagedeps
2141 * with the vnode lock held. Could be an assert.
2143 WORKITEM_FREE(pagedep, D_PAGEDEP);
2146 pagedep->pd_ino = ino;
2147 pagedep->pd_lbn = lbn;
2148 LIST_INIT(&pagedep->pd_dirremhd);
2149 LIST_INIT(&pagedep->pd_pendinghd);
2150 for (i = 0; i < DAHASHSZ; i++)
2151 LIST_INIT(&pagedep->pd_diraddhd[i]);
2152 LIST_INSERT_HEAD(pagedephd, pagedep, pd_hash);
2153 WORKLIST_INSERT(&bp->b_dep, &pagedep->pd_list);
2154 *pagedeppp = pagedep;
2159 * Structures and routines associated with inodedep caching.
2161 #define INODEDEP_HASH(ump, inum) \
2162 (&(ump)->inodedep_hashtbl[(inum) & (ump)->inodedep_hash_size])
2165 inodedep_find(inodedephd, inum, inodedeppp)
2166 struct inodedep_hashhead *inodedephd;
2168 struct inodedep **inodedeppp;
2170 struct inodedep *inodedep;
2172 LIST_FOREACH(inodedep, inodedephd, id_hash)
2173 if (inum == inodedep->id_ino)
2176 *inodedeppp = inodedep;
2184 * Look up an inodedep. Return 1 if found, 0 if not found.
2185 * If not found, allocate if DEPALLOC flag is passed.
2186 * Found or allocated entry is returned in inodedeppp.
2187 * This routine must be called with splbio interrupts blocked.
2190 inodedep_lookup(mp, inum, flags, inodedeppp)
2194 struct inodedep **inodedeppp;
2196 struct inodedep *inodedep;
2197 struct inodedep_hashhead *inodedephd;
2198 struct ufsmount *ump;
2204 inodedephd = INODEDEP_HASH(ump, inum);
2206 if (inodedep_find(inodedephd, inum, inodedeppp))
2208 if ((flags & DEPALLOC) == 0)
2211 * If the system is over its limit and our filesystem is
2212 * responsible for more than our share of that usage and
2213 * we are not in a rush, request some inodedep cleanup.
2215 if (softdep_excess_items(ump, D_INODEDEP))
2216 schedule_cleanup(mp);
2219 inodedep = malloc(sizeof(struct inodedep),
2220 M_INODEDEP, M_SOFTDEP_FLAGS);
2221 workitem_alloc(&inodedep->id_list, D_INODEDEP, mp);
2223 if (inodedep_find(inodedephd, inum, inodedeppp)) {
2224 WORKITEM_FREE(inodedep, D_INODEDEP);
2227 inodedep->id_fs = fs;
2228 inodedep->id_ino = inum;
2229 inodedep->id_state = ALLCOMPLETE;
2230 inodedep->id_nlinkdelta = 0;
2231 inodedep->id_savedino1 = NULL;
2232 inodedep->id_savedsize = -1;
2233 inodedep->id_savedextsize = -1;
2234 inodedep->id_savednlink = -1;
2235 inodedep->id_bmsafemap = NULL;
2236 inodedep->id_mkdiradd = NULL;
2237 LIST_INIT(&inodedep->id_dirremhd);
2238 LIST_INIT(&inodedep->id_pendinghd);
2239 LIST_INIT(&inodedep->id_inowait);
2240 LIST_INIT(&inodedep->id_bufwait);
2241 TAILQ_INIT(&inodedep->id_inoreflst);
2242 TAILQ_INIT(&inodedep->id_inoupdt);
2243 TAILQ_INIT(&inodedep->id_newinoupdt);
2244 TAILQ_INIT(&inodedep->id_extupdt);
2245 TAILQ_INIT(&inodedep->id_newextupdt);
2246 TAILQ_INIT(&inodedep->id_freeblklst);
2247 LIST_INSERT_HEAD(inodedephd, inodedep, id_hash);
2248 *inodedeppp = inodedep;
2253 * Structures and routines associated with newblk caching.
2255 #define NEWBLK_HASH(ump, inum) \
2256 (&(ump)->newblk_hashtbl[(inum) & (ump)->newblk_hash_size])
2259 newblk_find(newblkhd, newblkno, flags, newblkpp)
2260 struct newblk_hashhead *newblkhd;
2261 ufs2_daddr_t newblkno;
2263 struct newblk **newblkpp;
2265 struct newblk *newblk;
2267 LIST_FOREACH(newblk, newblkhd, nb_hash) {
2268 if (newblkno != newblk->nb_newblkno)
2271 * If we're creating a new dependency don't match those that
2272 * have already been converted to allocdirects. This is for
2275 if ((flags & DEPALLOC) && newblk->nb_list.wk_type != D_NEWBLK)
2288 * Look up a newblk. Return 1 if found, 0 if not found.
2289 * If not found, allocate if DEPALLOC flag is passed.
2290 * Found or allocated entry is returned in newblkpp.
2293 newblk_lookup(mp, newblkno, flags, newblkpp)
2295 ufs2_daddr_t newblkno;
2297 struct newblk **newblkpp;
2299 struct newblk *newblk;
2300 struct newblk_hashhead *newblkhd;
2301 struct ufsmount *ump;
2305 newblkhd = NEWBLK_HASH(ump, newblkno);
2306 if (newblk_find(newblkhd, newblkno, flags, newblkpp))
2308 if ((flags & DEPALLOC) == 0)
2310 if (softdep_excess_items(ump, D_NEWBLK) ||
2311 softdep_excess_items(ump, D_ALLOCDIRECT) ||
2312 softdep_excess_items(ump, D_ALLOCINDIR))
2313 schedule_cleanup(mp);
2316 newblk = malloc(sizeof(union allblk), M_NEWBLK,
2317 M_SOFTDEP_FLAGS | M_ZERO);
2318 workitem_alloc(&newblk->nb_list, D_NEWBLK, mp);
2320 if (newblk_find(newblkhd, newblkno, flags, newblkpp)) {
2321 WORKITEM_FREE(newblk, D_NEWBLK);
2324 newblk->nb_freefrag = NULL;
2325 LIST_INIT(&newblk->nb_indirdeps);
2326 LIST_INIT(&newblk->nb_newdirblk);
2327 LIST_INIT(&newblk->nb_jwork);
2328 newblk->nb_state = ATTACHED;
2329 newblk->nb_newblkno = newblkno;
2330 LIST_INSERT_HEAD(newblkhd, newblk, nb_hash);
2336 * Structures and routines associated with freed indirect block caching.
2338 #define INDIR_HASH(ump, blkno) \
2339 (&(ump)->indir_hashtbl[(blkno) & (ump)->indir_hash_size])
2342 * Lookup an indirect block in the indir hash table. The freework is
2343 * removed and potentially freed. The caller must do a blocking journal
2344 * write before writing to the blkno.
2347 indirblk_lookup(mp, blkno)
2351 struct freework *freework;
2352 struct indir_hashhead *wkhd;
2353 struct ufsmount *ump;
2356 wkhd = INDIR_HASH(ump, blkno);
2357 TAILQ_FOREACH(freework, wkhd, fw_next) {
2358 if (freework->fw_blkno != blkno)
2360 indirblk_remove(freework);
2367 * Insert an indirect block represented by freework into the indirblk
2368 * hash table so that it may prevent the block from being re-used prior
2369 * to the journal being written.
2372 indirblk_insert(freework)
2373 struct freework *freework;
2375 struct jblocks *jblocks;
2377 struct ufsmount *ump;
2379 ump = VFSTOUFS(freework->fw_list.wk_mp);
2380 jblocks = ump->softdep_jblocks;
2381 jseg = TAILQ_LAST(&jblocks->jb_segs, jseglst);
2385 LIST_INSERT_HEAD(&jseg->js_indirs, freework, fw_segs);
2386 TAILQ_INSERT_HEAD(INDIR_HASH(ump, freework->fw_blkno), freework,
2388 freework->fw_state &= ~DEPCOMPLETE;
2392 indirblk_remove(freework)
2393 struct freework *freework;
2395 struct ufsmount *ump;
2397 ump = VFSTOUFS(freework->fw_list.wk_mp);
2398 LIST_REMOVE(freework, fw_segs);
2399 TAILQ_REMOVE(INDIR_HASH(ump, freework->fw_blkno), freework, fw_next);
2400 freework->fw_state |= DEPCOMPLETE;
2401 if ((freework->fw_state & ALLCOMPLETE) == ALLCOMPLETE)
2402 WORKITEM_FREE(freework, D_FREEWORK);
2406 * Executed during filesystem system initialization before
2407 * mounting any filesystems.
2410 softdep_initialize()
2413 TAILQ_INIT(&softdepmounts);
2415 max_softdeps = desiredvnodes * 4;
2417 max_softdeps = desiredvnodes * 2;
2420 /* initialise bioops hack */
2421 bioops.io_start = softdep_disk_io_initiation;
2422 bioops.io_complete = softdep_disk_write_complete;
2423 bioops.io_deallocate = softdep_deallocate_dependencies;
2424 bioops.io_countdeps = softdep_count_dependencies;
2425 softdep_ast_cleanup = softdep_ast_cleanup_proc;
2427 /* Initialize the callout with an mtx. */
2428 callout_init_mtx(&softdep_callout, &lk, 0);
2432 * Executed after all filesystems have been unmounted during
2433 * filesystem module unload.
2436 softdep_uninitialize()
2439 /* clear bioops hack */
2440 bioops.io_start = NULL;
2441 bioops.io_complete = NULL;
2442 bioops.io_deallocate = NULL;
2443 bioops.io_countdeps = NULL;
2444 softdep_ast_cleanup = NULL;
2446 callout_drain(&softdep_callout);
2450 * Called at mount time to notify the dependency code that a
2451 * filesystem wishes to use it.
2454 softdep_mount(devvp, mp, fs, cred)
2455 struct vnode *devvp;
2460 struct csum_total cstotal;
2461 struct mount_softdeps *sdp;
2462 struct ufsmount *ump;
2467 sdp = malloc(sizeof(struct mount_softdeps), M_MOUNTDATA,
2470 mp->mnt_flag = (mp->mnt_flag & ~MNT_ASYNC) | MNT_SOFTDEP;
2471 if ((mp->mnt_kern_flag & MNTK_SOFTDEP) == 0) {
2472 mp->mnt_kern_flag = (mp->mnt_kern_flag & ~MNTK_ASYNC) |
2473 MNTK_SOFTDEP | MNTK_NOASYNC;
2476 ump->um_softdep = sdp;
2478 rw_init(LOCK_PTR(ump), "Per-Filesystem Softdep Lock");
2480 LIST_INIT(&ump->softdep_workitem_pending);
2481 LIST_INIT(&ump->softdep_journal_pending);
2482 TAILQ_INIT(&ump->softdep_unlinked);
2483 LIST_INIT(&ump->softdep_dirtycg);
2484 ump->softdep_worklist_tail = NULL;
2485 ump->softdep_on_worklist = 0;
2486 ump->softdep_deps = 0;
2487 LIST_INIT(&ump->softdep_mkdirlisthd);
2488 ump->pagedep_hashtbl = hashinit(desiredvnodes / 5, M_PAGEDEP,
2489 &ump->pagedep_hash_size);
2490 ump->pagedep_nextclean = 0;
2491 ump->inodedep_hashtbl = hashinit(desiredvnodes, M_INODEDEP,
2492 &ump->inodedep_hash_size);
2493 ump->inodedep_nextclean = 0;
2494 ump->newblk_hashtbl = hashinit(max_softdeps / 2, M_NEWBLK,
2495 &ump->newblk_hash_size);
2496 ump->bmsafemap_hashtbl = hashinit(1024, M_BMSAFEMAP,
2497 &ump->bmsafemap_hash_size);
2498 i = 1 << (ffs(desiredvnodes / 10) - 1);
2499 ump->indir_hashtbl = malloc(i * sizeof(struct indir_hashhead),
2500 M_FREEWORK, M_WAITOK);
2501 ump->indir_hash_size = i - 1;
2502 for (i = 0; i <= ump->indir_hash_size; i++)
2503 TAILQ_INIT(&ump->indir_hashtbl[i]);
2504 ACQUIRE_GBLLOCK(&lk);
2505 TAILQ_INSERT_TAIL(&softdepmounts, sdp, sd_next);
2507 if ((fs->fs_flags & FS_SUJ) &&
2508 (error = journal_mount(mp, fs, cred)) != 0) {
2509 printf("Failed to start journal: %d\n", error);
2510 softdep_unmount(mp);
2514 * Start our flushing thread in the bufdaemon process.
2517 ump->softdep_flags |= FLUSH_STARTING;
2519 kproc_kthread_add(&softdep_flush, mp, &bufdaemonproc,
2520 &ump->softdep_flushtd, 0, 0, "softdepflush", "%s worker",
2521 mp->mnt_stat.f_mntonname);
2523 while ((ump->softdep_flags & FLUSH_STARTING) != 0) {
2524 msleep(&ump->softdep_flushtd, LOCK_PTR(ump), PVM, "sdstart",
2529 * When doing soft updates, the counters in the
2530 * superblock may have gotten out of sync. Recomputation
2531 * can take a long time and can be deferred for background
2532 * fsck. However, the old behavior of scanning the cylinder
2533 * groups and recalculating them at mount time is available
2534 * by setting vfs.ffs.compute_summary_at_mount to one.
2536 if (compute_summary_at_mount == 0 || fs->fs_clean != 0)
2538 bzero(&cstotal, sizeof cstotal);
2539 for (cyl = 0; cyl < fs->fs_ncg; cyl++) {
2540 if ((error = bread(devvp, fsbtodb(fs, cgtod(fs, cyl)),
2541 fs->fs_cgsize, cred, &bp)) != 0) {
2543 softdep_unmount(mp);
2546 cgp = (struct cg *)bp->b_data;
2547 cstotal.cs_nffree += cgp->cg_cs.cs_nffree;
2548 cstotal.cs_nbfree += cgp->cg_cs.cs_nbfree;
2549 cstotal.cs_nifree += cgp->cg_cs.cs_nifree;
2550 cstotal.cs_ndir += cgp->cg_cs.cs_ndir;
2551 fs->fs_cs(fs, cyl) = cgp->cg_cs;
2555 if (bcmp(&cstotal, &fs->fs_cstotal, sizeof cstotal))
2556 printf("%s: superblock summary recomputed\n", fs->fs_fsmnt);
2558 bcopy(&cstotal, &fs->fs_cstotal, sizeof cstotal);
2566 struct ufsmount *ump;
2571 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
2572 ("softdep_unmount called on non-softdep filesystem"));
2575 mp->mnt_flag &= ~MNT_SOFTDEP;
2576 if (MOUNTEDSUJ(mp) == 0) {
2579 mp->mnt_flag &= ~MNT_SUJ;
2581 journal_unmount(ump);
2584 * Shut down our flushing thread. Check for NULL is if
2585 * softdep_mount errors out before the thread has been created.
2587 if (ump->softdep_flushtd != NULL) {
2589 ump->softdep_flags |= FLUSH_EXIT;
2590 wakeup(&ump->softdep_flushtd);
2591 msleep(&ump->softdep_flags, LOCK_PTR(ump), PVM | PDROP,
2593 KASSERT((ump->softdep_flags & FLUSH_EXIT) == 0,
2594 ("Thread shutdown failed"));
2597 * Free up our resources.
2599 ACQUIRE_GBLLOCK(&lk);
2600 TAILQ_REMOVE(&softdepmounts, ump->um_softdep, sd_next);
2602 rw_destroy(LOCK_PTR(ump));
2603 hashdestroy(ump->pagedep_hashtbl, M_PAGEDEP, ump->pagedep_hash_size);
2604 hashdestroy(ump->inodedep_hashtbl, M_INODEDEP, ump->inodedep_hash_size);
2605 hashdestroy(ump->newblk_hashtbl, M_NEWBLK, ump->newblk_hash_size);
2606 hashdestroy(ump->bmsafemap_hashtbl, M_BMSAFEMAP,
2607 ump->bmsafemap_hash_size);
2608 free(ump->indir_hashtbl, M_FREEWORK);
2610 for (i = 0; i <= D_LAST; i++)
2611 KASSERT(ump->softdep_curdeps[i] == 0,
2612 ("Unmount %s: Dep type %s != 0 (%ld)", ump->um_fs->fs_fsmnt,
2613 TYPENAME(i), ump->softdep_curdeps[i]));
2615 free(ump->um_softdep, M_MOUNTDATA);
2618 static struct jblocks *
2619 jblocks_create(void)
2621 struct jblocks *jblocks;
2623 jblocks = malloc(sizeof(*jblocks), M_JBLOCKS, M_WAITOK | M_ZERO);
2624 TAILQ_INIT(&jblocks->jb_segs);
2625 jblocks->jb_avail = 10;
2626 jblocks->jb_extent = malloc(sizeof(struct jextent) * jblocks->jb_avail,
2627 M_JBLOCKS, M_WAITOK | M_ZERO);
2633 jblocks_alloc(jblocks, bytes, actual)
2634 struct jblocks *jblocks;
2639 struct jextent *jext;
2643 blocks = bytes / DEV_BSIZE;
2644 jext = &jblocks->jb_extent[jblocks->jb_head];
2645 freecnt = jext->je_blocks - jblocks->jb_off;
2647 jblocks->jb_off = 0;
2648 if (++jblocks->jb_head > jblocks->jb_used)
2649 jblocks->jb_head = 0;
2650 jext = &jblocks->jb_extent[jblocks->jb_head];
2651 freecnt = jext->je_blocks;
2653 if (freecnt > blocks)
2655 *actual = freecnt * DEV_BSIZE;
2656 daddr = jext->je_daddr + jblocks->jb_off;
2657 jblocks->jb_off += freecnt;
2658 jblocks->jb_free -= freecnt;
2664 jblocks_free(jblocks, mp, bytes)
2665 struct jblocks *jblocks;
2670 LOCK_OWNED(VFSTOUFS(mp));
2671 jblocks->jb_free += bytes / DEV_BSIZE;
2672 if (jblocks->jb_suspended)
2673 worklist_speedup(mp);
2678 jblocks_destroy(jblocks)
2679 struct jblocks *jblocks;
2682 if (jblocks->jb_extent)
2683 free(jblocks->jb_extent, M_JBLOCKS);
2684 free(jblocks, M_JBLOCKS);
2688 jblocks_add(jblocks, daddr, blocks)
2689 struct jblocks *jblocks;
2693 struct jextent *jext;
2695 jblocks->jb_blocks += blocks;
2696 jblocks->jb_free += blocks;
2697 jext = &jblocks->jb_extent[jblocks->jb_used];
2698 /* Adding the first block. */
2699 if (jext->je_daddr == 0) {
2700 jext->je_daddr = daddr;
2701 jext->je_blocks = blocks;
2704 /* Extending the last extent. */
2705 if (jext->je_daddr + jext->je_blocks == daddr) {
2706 jext->je_blocks += blocks;
2709 /* Adding a new extent. */
2710 if (++jblocks->jb_used == jblocks->jb_avail) {
2711 jblocks->jb_avail *= 2;
2712 jext = malloc(sizeof(struct jextent) * jblocks->jb_avail,
2713 M_JBLOCKS, M_WAITOK | M_ZERO);
2714 memcpy(jext, jblocks->jb_extent,
2715 sizeof(struct jextent) * jblocks->jb_used);
2716 free(jblocks->jb_extent, M_JBLOCKS);
2717 jblocks->jb_extent = jext;
2719 jext = &jblocks->jb_extent[jblocks->jb_used];
2720 jext->je_daddr = daddr;
2721 jext->je_blocks = blocks;
2726 softdep_journal_lookup(mp, vpp)
2730 struct componentname cnp;
2735 error = VFS_VGET(mp, ROOTINO, LK_EXCLUSIVE, &dvp);
2738 bzero(&cnp, sizeof(cnp));
2739 cnp.cn_nameiop = LOOKUP;
2740 cnp.cn_flags = ISLASTCN;
2741 cnp.cn_thread = curthread;
2742 cnp.cn_cred = curthread->td_ucred;
2743 cnp.cn_pnbuf = SUJ_FILE;
2744 cnp.cn_nameptr = SUJ_FILE;
2745 cnp.cn_namelen = strlen(SUJ_FILE);
2746 error = ufs_lookup_ino(dvp, NULL, &cnp, &sujournal);
2750 error = VFS_VGET(mp, sujournal, LK_EXCLUSIVE, vpp);
2755 * Open and verify the journal file.
2758 journal_mount(mp, fs, cred)
2763 struct jblocks *jblocks;
2764 struct ufsmount *ump;
2773 ump->softdep_journal_tail = NULL;
2774 ump->softdep_on_journal = 0;
2775 ump->softdep_accdeps = 0;
2776 ump->softdep_req = 0;
2777 ump->softdep_jblocks = NULL;
2778 error = softdep_journal_lookup(mp, &vp);
2780 printf("Failed to find journal. Use tunefs to create one\n");
2784 if (ip->i_size < SUJ_MIN) {
2788 bcount = lblkno(fs, ip->i_size); /* Only use whole blocks. */
2789 jblocks = jblocks_create();
2790 for (i = 0; i < bcount; i++) {
2791 error = ufs_bmaparray(vp, i, &blkno, NULL, NULL, NULL);
2794 jblocks_add(jblocks, blkno, fsbtodb(fs, fs->fs_frag));
2797 jblocks_destroy(jblocks);
2800 jblocks->jb_low = jblocks->jb_free / 3; /* Reserve 33%. */
2801 jblocks->jb_min = jblocks->jb_free / 10; /* Suspend at 10%. */
2802 ump->softdep_jblocks = jblocks;
2806 mp->mnt_flag |= MNT_SUJ;
2807 mp->mnt_flag &= ~MNT_SOFTDEP;
2810 * Only validate the journal contents if the
2811 * filesystem is clean, otherwise we write the logs
2812 * but they'll never be used. If the filesystem was
2813 * still dirty when we mounted it the journal is
2814 * invalid and a new journal can only be valid if it
2815 * starts from a clean mount.
2818 DIP_SET(ip, i_modrev, fs->fs_mtime);
2819 ip->i_flags |= IN_MODIFIED;
2828 journal_unmount(ump)
2829 struct ufsmount *ump;
2832 if (ump->softdep_jblocks)
2833 jblocks_destroy(ump->softdep_jblocks);
2834 ump->softdep_jblocks = NULL;
2838 * Called when a journal record is ready to be written. Space is allocated
2839 * and the journal entry is created when the journal is flushed to stable
2844 struct worklist *wk;
2846 struct ufsmount *ump;
2848 ump = VFSTOUFS(wk->wk_mp);
2850 if (wk->wk_state & ONWORKLIST)
2851 panic("add_to_journal: %s(0x%X) already on list",
2852 TYPENAME(wk->wk_type), wk->wk_state);
2853 wk->wk_state |= ONWORKLIST | DEPCOMPLETE;
2854 if (LIST_EMPTY(&ump->softdep_journal_pending)) {
2855 ump->softdep_jblocks->jb_age = ticks;
2856 LIST_INSERT_HEAD(&ump->softdep_journal_pending, wk, wk_list);
2858 LIST_INSERT_AFTER(ump->softdep_journal_tail, wk, wk_list);
2859 ump->softdep_journal_tail = wk;
2860 ump->softdep_on_journal += 1;
2864 * Remove an arbitrary item for the journal worklist maintain the tail
2865 * pointer. This happens when a new operation obviates the need to
2866 * journal an old operation.
2869 remove_from_journal(wk)
2870 struct worklist *wk;
2872 struct ufsmount *ump;
2874 ump = VFSTOUFS(wk->wk_mp);
2878 struct worklist *wkn;
2880 LIST_FOREACH(wkn, &ump->softdep_journal_pending, wk_list)
2884 panic("remove_from_journal: %p is not in journal", wk);
2888 * We emulate a TAILQ to save space in most structures which do not
2889 * require TAILQ semantics. Here we must update the tail position
2890 * when removing the tail which is not the final entry. This works
2891 * only if the worklist linkage are at the beginning of the structure.
2893 if (ump->softdep_journal_tail == wk)
2894 ump->softdep_journal_tail =
2895 (struct worklist *)wk->wk_list.le_prev;
2897 WORKLIST_REMOVE(wk);
2898 ump->softdep_on_journal -= 1;
2902 * Check for journal space as well as dependency limits so the prelink
2903 * code can throttle both journaled and non-journaled filesystems.
2904 * Threshold is 0 for low and 1 for min.
2907 journal_space(ump, thresh)
2908 struct ufsmount *ump;
2911 struct jblocks *jblocks;
2914 jblocks = ump->softdep_jblocks;
2915 if (jblocks == NULL)
2918 * We use a tighter restriction here to prevent request_cleanup()
2919 * running in threads from running into locks we currently hold.
2920 * We have to be over the limit and our filesystem has to be
2921 * responsible for more than our share of that usage.
2923 limit = (max_softdeps / 10) * 9;
2924 if (dep_current[D_INODEDEP] > limit &&
2925 ump->softdep_curdeps[D_INODEDEP] > limit / stat_flush_threads)
2928 thresh = jblocks->jb_min;
2930 thresh = jblocks->jb_low;
2931 avail = (ump->softdep_on_journal * JREC_SIZE) / DEV_BSIZE;
2932 avail = jblocks->jb_free - avail;
2934 return (avail > thresh);
2938 journal_suspend(ump)
2939 struct ufsmount *ump;
2941 struct jblocks *jblocks;
2945 jblocks = ump->softdep_jblocks;
2947 if ((mp->mnt_kern_flag & MNTK_SUSPEND) == 0) {
2949 mp->mnt_kern_flag |= MNTK_SUSPEND;
2950 mp->mnt_susp_owner = ump->softdep_flushtd;
2952 jblocks->jb_suspended = 1;
2957 journal_unsuspend(struct ufsmount *ump)
2959 struct jblocks *jblocks;
2963 jblocks = ump->softdep_jblocks;
2965 if (jblocks != NULL && jblocks->jb_suspended &&
2966 journal_space(ump, jblocks->jb_min)) {
2967 jblocks->jb_suspended = 0;
2969 mp->mnt_susp_owner = curthread;
2970 vfs_write_resume(mp, 0);
2978 * Called before any allocation function to be certain that there is
2979 * sufficient space in the journal prior to creating any new records.
2980 * Since in the case of block allocation we may have multiple locked
2981 * buffers at the time of the actual allocation we can not block
2982 * when the journal records are created. Doing so would create a deadlock
2983 * if any of these buffers needed to be flushed to reclaim space. Instead
2984 * we require a sufficiently large amount of available space such that
2985 * each thread in the system could have passed this allocation check and
2986 * still have sufficient free space. With 20% of a minimum journal size
2987 * of 1MB we have 6553 records available.
2990 softdep_prealloc(vp, waitok)
2994 struct ufsmount *ump;
2996 KASSERT(MOUNTEDSOFTDEP(vp->v_mount) != 0,
2997 ("softdep_prealloc called on non-softdep filesystem"));
2999 * Nothing to do if we are not running journaled soft updates.
3000 * If we currently hold the snapshot lock, we must avoid
3001 * handling other resources that could cause deadlock. Do not
3002 * touch quotas vnode since it is typically recursed with
3003 * other vnode locks held.
3005 if (DOINGSUJ(vp) == 0 || IS_SNAPSHOT(VTOI(vp)) ||
3006 (vp->v_vflag & VV_SYSTEM) != 0)
3008 ump = VFSTOUFS(vp->v_mount);
3010 if (journal_space(ump, 0)) {
3016 if (waitok == MNT_NOWAIT)
3019 * Attempt to sync this vnode once to flush any journal
3020 * work attached to it.
3022 if ((curthread->td_pflags & TDP_COWINPROGRESS) == 0)
3023 ffs_syncvnode(vp, waitok, 0);
3025 process_removes(vp);
3026 process_truncates(vp);
3027 if (journal_space(ump, 0) == 0) {
3028 softdep_speedup(ump);
3029 if (journal_space(ump, 1) == 0)
3030 journal_suspend(ump);
3038 * Before adjusting a link count on a vnode verify that we have sufficient
3039 * journal space. If not, process operations that depend on the currently
3040 * locked pair of vnodes to try to flush space as the syncer, buf daemon,
3041 * and softdep flush threads can not acquire these locks to reclaim space.
3044 softdep_prelink(dvp, vp)
3048 struct ufsmount *ump;
3050 ump = VFSTOUFS(dvp->v_mount);
3053 * Nothing to do if we have sufficient journal space.
3054 * If we currently hold the snapshot lock, we must avoid
3055 * handling other resources that could cause deadlock.
3057 if (journal_space(ump, 0) || (vp && IS_SNAPSHOT(VTOI(vp))))
3062 ffs_syncvnode(vp, MNT_NOWAIT, 0);
3063 ffs_syncvnode(dvp, MNT_WAIT, 0);
3065 /* Process vp before dvp as it may create .. removes. */
3067 process_removes(vp);
3068 process_truncates(vp);
3070 process_removes(dvp);
3071 process_truncates(dvp);
3072 softdep_speedup(ump);
3073 process_worklist_item(UFSTOVFS(ump), 2, LK_NOWAIT);
3074 if (journal_space(ump, 0) == 0) {
3075 softdep_speedup(ump);
3076 if (journal_space(ump, 1) == 0)
3077 journal_suspend(ump);
3082 jseg_write(ump, jseg, data)
3083 struct ufsmount *ump;
3087 struct jsegrec *rec;
3089 rec = (struct jsegrec *)data;
3090 rec->jsr_seq = jseg->js_seq;
3091 rec->jsr_oldest = jseg->js_oldseq;
3092 rec->jsr_cnt = jseg->js_cnt;
3093 rec->jsr_blocks = jseg->js_size / ump->um_devvp->v_bufobj.bo_bsize;
3095 rec->jsr_time = ump->um_fs->fs_mtime;
3099 inoref_write(inoref, jseg, rec)
3100 struct inoref *inoref;
3102 struct jrefrec *rec;
3105 inoref->if_jsegdep->jd_seg = jseg;
3106 rec->jr_ino = inoref->if_ino;
3107 rec->jr_parent = inoref->if_parent;
3108 rec->jr_nlink = inoref->if_nlink;
3109 rec->jr_mode = inoref->if_mode;
3110 rec->jr_diroff = inoref->if_diroff;
3114 jaddref_write(jaddref, jseg, data)
3115 struct jaddref *jaddref;
3119 struct jrefrec *rec;
3121 rec = (struct jrefrec *)data;
3122 rec->jr_op = JOP_ADDREF;
3123 inoref_write(&jaddref->ja_ref, jseg, rec);
3127 jremref_write(jremref, jseg, data)
3128 struct jremref *jremref;
3132 struct jrefrec *rec;
3134 rec = (struct jrefrec *)data;
3135 rec->jr_op = JOP_REMREF;
3136 inoref_write(&jremref->jr_ref, jseg, rec);
3140 jmvref_write(jmvref, jseg, data)
3141 struct jmvref *jmvref;
3147 rec = (struct jmvrec *)data;
3148 rec->jm_op = JOP_MVREF;
3149 rec->jm_ino = jmvref->jm_ino;
3150 rec->jm_parent = jmvref->jm_parent;
3151 rec->jm_oldoff = jmvref->jm_oldoff;
3152 rec->jm_newoff = jmvref->jm_newoff;
3156 jnewblk_write(jnewblk, jseg, data)
3157 struct jnewblk *jnewblk;
3161 struct jblkrec *rec;
3163 jnewblk->jn_jsegdep->jd_seg = jseg;
3164 rec = (struct jblkrec *)data;
3165 rec->jb_op = JOP_NEWBLK;
3166 rec->jb_ino = jnewblk->jn_ino;
3167 rec->jb_blkno = jnewblk->jn_blkno;
3168 rec->jb_lbn = jnewblk->jn_lbn;
3169 rec->jb_frags = jnewblk->jn_frags;
3170 rec->jb_oldfrags = jnewblk->jn_oldfrags;
3174 jfreeblk_write(jfreeblk, jseg, data)
3175 struct jfreeblk *jfreeblk;
3179 struct jblkrec *rec;
3181 jfreeblk->jf_dep.jb_jsegdep->jd_seg = jseg;
3182 rec = (struct jblkrec *)data;
3183 rec->jb_op = JOP_FREEBLK;
3184 rec->jb_ino = jfreeblk->jf_ino;
3185 rec->jb_blkno = jfreeblk->jf_blkno;
3186 rec->jb_lbn = jfreeblk->jf_lbn;
3187 rec->jb_frags = jfreeblk->jf_frags;
3188 rec->jb_oldfrags = 0;
3192 jfreefrag_write(jfreefrag, jseg, data)
3193 struct jfreefrag *jfreefrag;
3197 struct jblkrec *rec;
3199 jfreefrag->fr_jsegdep->jd_seg = jseg;
3200 rec = (struct jblkrec *)data;
3201 rec->jb_op = JOP_FREEBLK;
3202 rec->jb_ino = jfreefrag->fr_ino;
3203 rec->jb_blkno = jfreefrag->fr_blkno;
3204 rec->jb_lbn = jfreefrag->fr_lbn;
3205 rec->jb_frags = jfreefrag->fr_frags;
3206 rec->jb_oldfrags = 0;
3210 jtrunc_write(jtrunc, jseg, data)
3211 struct jtrunc *jtrunc;
3215 struct jtrncrec *rec;
3217 jtrunc->jt_dep.jb_jsegdep->jd_seg = jseg;
3218 rec = (struct jtrncrec *)data;
3219 rec->jt_op = JOP_TRUNC;
3220 rec->jt_ino = jtrunc->jt_ino;
3221 rec->jt_size = jtrunc->jt_size;
3222 rec->jt_extsize = jtrunc->jt_extsize;
3226 jfsync_write(jfsync, jseg, data)
3227 struct jfsync *jfsync;
3231 struct jtrncrec *rec;
3233 rec = (struct jtrncrec *)data;
3234 rec->jt_op = JOP_SYNC;
3235 rec->jt_ino = jfsync->jfs_ino;
3236 rec->jt_size = jfsync->jfs_size;
3237 rec->jt_extsize = jfsync->jfs_extsize;
3241 softdep_flushjournal(mp)
3244 struct jblocks *jblocks;
3245 struct ufsmount *ump;
3247 if (MOUNTEDSUJ(mp) == 0)
3250 jblocks = ump->softdep_jblocks;
3252 while (ump->softdep_on_journal) {
3253 jblocks->jb_needseg = 1;
3254 softdep_process_journal(mp, NULL, MNT_WAIT);
3259 static void softdep_synchronize_completed(struct bio *);
3260 static void softdep_synchronize(struct bio *, struct ufsmount *, void *);
3263 softdep_synchronize_completed(bp)
3266 struct jseg *oldest;
3268 struct ufsmount *ump;
3271 * caller1 marks the last segment written before we issued the
3272 * synchronize cache.
3274 jseg = bp->bio_caller1;
3279 ump = VFSTOUFS(jseg->js_list.wk_mp);
3283 * Mark all the journal entries waiting on the synchronize cache
3284 * as completed so they may continue on.
3286 while (jseg != NULL && (jseg->js_state & COMPLETE) == 0) {
3287 jseg->js_state |= COMPLETE;
3289 jseg = TAILQ_PREV(jseg, jseglst, js_next);
3292 * Restart deferred journal entry processing from the oldest
3296 complete_jsegs(oldest);
3303 * Send BIO_FLUSH/SYNCHRONIZE CACHE to the device to enforce write ordering
3304 * barriers. The journal must be written prior to any blocks that depend
3305 * on it and the journal can not be released until the blocks have be
3306 * written. This code handles both barriers simultaneously.
3309 softdep_synchronize(bp, ump, caller1)
3311 struct ufsmount *ump;
3315 bp->bio_cmd = BIO_FLUSH;
3316 bp->bio_flags |= BIO_ORDERED;
3317 bp->bio_data = NULL;
3318 bp->bio_offset = ump->um_cp->provider->mediasize;
3320 bp->bio_done = softdep_synchronize_completed;
3321 bp->bio_caller1 = caller1;
3323 (struct g_consumer *)ump->um_devvp->v_bufobj.bo_private);
3327 * Flush some journal records to disk.
3330 softdep_process_journal(mp, needwk, flags)
3332 struct worklist *needwk;
3335 struct jblocks *jblocks;
3336 struct ufsmount *ump;
3337 struct worklist *wk;
3345 int jrecmin; /* Minimum records per block. */
3346 int jrecmax; /* Maximum records per block. */
3352 if (MOUNTEDSUJ(mp) == 0)
3354 shouldflush = softdep_flushcache;
3360 jblocks = ump->softdep_jblocks;
3361 devbsize = ump->um_devvp->v_bufobj.bo_bsize;
3363 * We write anywhere between a disk block and fs block. The upper
3364 * bound is picked to prevent buffer cache fragmentation and limit
3365 * processing time per I/O.
3367 jrecmin = (devbsize / JREC_SIZE) - 1; /* -1 for seg header */
3368 jrecmax = (fs->fs_bsize / devbsize) * jrecmin;
3371 cnt = ump->softdep_on_journal;
3373 * Criteria for writing a segment:
3374 * 1) We have a full block.
3375 * 2) We're called from jwait() and haven't found the
3377 * 3) Always write if needseg is set.
3378 * 4) If we are called from process_worklist and have
3379 * not yet written anything we write a partial block
3380 * to enforce a 1 second maximum latency on journal
3383 if (cnt < (jrecmax - 1) && needwk == NULL &&
3384 jblocks->jb_needseg == 0 && (segwritten || cnt == 0))
3388 * Verify some free journal space. softdep_prealloc() should
3389 * guarantee that we don't run out so this is indicative of
3390 * a problem with the flow control. Try to recover
3391 * gracefully in any event.
3393 while (jblocks->jb_free == 0) {
3394 if (flags != MNT_WAIT)
3396 printf("softdep: Out of journal space!\n");
3397 softdep_speedup(ump);
3398 msleep(jblocks, LOCK_PTR(ump), PRIBIO, "jblocks", hz);
3401 jseg = malloc(sizeof(*jseg), M_JSEG, M_SOFTDEP_FLAGS);
3402 workitem_alloc(&jseg->js_list, D_JSEG, mp);
3403 LIST_INIT(&jseg->js_entries);
3404 LIST_INIT(&jseg->js_indirs);
3405 jseg->js_state = ATTACHED;
3406 if (shouldflush == 0)
3407 jseg->js_state |= COMPLETE;
3408 else if (bio == NULL)
3409 bio = g_alloc_bio();
3410 jseg->js_jblocks = jblocks;
3411 bp = geteblk(fs->fs_bsize, 0);
3414 * If there was a race while we were allocating the block
3415 * and jseg the entry we care about was likely written.
3416 * We bail out in both the WAIT and NOWAIT case and assume
3417 * the caller will loop if the entry it cares about is
3420 cnt = ump->softdep_on_journal;
3421 if (cnt + jblocks->jb_needseg == 0 || jblocks->jb_free == 0) {
3422 bp->b_flags |= B_INVAL | B_NOCACHE;
3423 WORKITEM_FREE(jseg, D_JSEG);
3430 * Calculate the disk block size required for the available
3431 * records rounded to the min size.
3435 else if (cnt < jrecmax)
3436 size = howmany(cnt, jrecmin) * devbsize;
3438 size = fs->fs_bsize;
3440 * Allocate a disk block for this journal data and account
3441 * for truncation of the requested size if enough contiguous
3442 * space was not available.
3444 bp->b_blkno = jblocks_alloc(jblocks, size, &size);
3445 bp->b_lblkno = bp->b_blkno;
3446 bp->b_offset = bp->b_blkno * DEV_BSIZE;
3447 bp->b_bcount = size;
3448 bp->b_flags &= ~B_INVAL;
3449 bp->b_flags |= B_VALIDSUSPWRT | B_NOCOPY;
3451 * Initialize our jseg with cnt records. Assign the next
3452 * sequence number to it and link it in-order.
3454 cnt = MIN(cnt, (size / devbsize) * jrecmin);
3457 jseg->js_refs = cnt + 1; /* Self ref. */
3458 jseg->js_size = size;
3459 jseg->js_seq = jblocks->jb_nextseq++;
3460 if (jblocks->jb_oldestseg == NULL)
3461 jblocks->jb_oldestseg = jseg;
3462 jseg->js_oldseq = jblocks->jb_oldestseg->js_seq;
3463 TAILQ_INSERT_TAIL(&jblocks->jb_segs, jseg, js_next);
3464 if (jblocks->jb_writeseg == NULL)
3465 jblocks->jb_writeseg = jseg;
3467 * Start filling in records from the pending list.
3473 * Always put a header on the first block.
3474 * XXX As with below, there might not be a chance to get
3475 * into the loop. Ensure that something valid is written.
3477 jseg_write(ump, jseg, data);
3479 data = bp->b_data + off;
3482 * XXX Something is wrong here. There's no work to do,
3483 * but we need to perform and I/O and allow it to complete
3486 if (LIST_EMPTY(&ump->softdep_journal_pending))
3487 stat_emptyjblocks++;
3489 while ((wk = LIST_FIRST(&ump->softdep_journal_pending))
3493 /* Place a segment header on every device block. */
3494 if ((off % devbsize) == 0) {
3495 jseg_write(ump, jseg, data);
3497 data = bp->b_data + off;
3501 remove_from_journal(wk);
3502 wk->wk_state |= INPROGRESS;
3503 WORKLIST_INSERT(&jseg->js_entries, wk);
3504 switch (wk->wk_type) {
3506 jaddref_write(WK_JADDREF(wk), jseg, data);
3509 jremref_write(WK_JREMREF(wk), jseg, data);
3512 jmvref_write(WK_JMVREF(wk), jseg, data);
3515 jnewblk_write(WK_JNEWBLK(wk), jseg, data);
3518 jfreeblk_write(WK_JFREEBLK(wk), jseg, data);
3521 jfreefrag_write(WK_JFREEFRAG(wk), jseg, data);
3524 jtrunc_write(WK_JTRUNC(wk), jseg, data);
3527 jfsync_write(WK_JFSYNC(wk), jseg, data);
3530 panic("process_journal: Unknown type %s",
3531 TYPENAME(wk->wk_type));
3535 data = bp->b_data + off;
3539 /* Clear any remaining space so we don't leak kernel data */
3541 bzero(data, size - off);
3544 * Write this one buffer and continue.
3547 jblocks->jb_needseg = 0;
3548 WORKLIST_INSERT(&bp->b_dep, &jseg->js_list);
3550 pbgetvp(ump->um_devvp, bp);
3552 * We only do the blocking wait once we find the journal
3553 * entry we're looking for.
3555 if (needwk == NULL && flags == MNT_WAIT)
3562 * If we wrote a segment issue a synchronize cache so the journal
3563 * is reflected on disk before the data is written. Since reclaiming
3564 * journal space also requires writing a journal record this
3565 * process also enforces a barrier before reclamation.
3567 if (segwritten && shouldflush) {
3568 softdep_synchronize(bio, ump,
3569 TAILQ_LAST(&jblocks->jb_segs, jseglst));
3573 * If we've suspended the filesystem because we ran out of journal
3574 * space either try to sync it here to make some progress or
3575 * unsuspend it if we already have.
3577 if (flags == 0 && jblocks->jb_suspended) {
3578 if (journal_unsuspend(ump))
3581 VFS_SYNC(mp, MNT_NOWAIT);
3582 ffs_sbupdate(ump, MNT_WAIT, 0);
3588 * Complete a jseg, allowing all dependencies awaiting journal writes
3589 * to proceed. Each journal dependency also attaches a jsegdep to dependent
3590 * structures so that the journal segment can be freed to reclaim space.
3596 struct worklist *wk;
3597 struct jmvref *jmvref;
3603 while ((wk = LIST_FIRST(&jseg->js_entries)) != NULL) {
3604 WORKLIST_REMOVE(wk);
3605 waiting = wk->wk_state & IOWAITING;
3606 wk->wk_state &= ~(INPROGRESS | IOWAITING);
3607 wk->wk_state |= COMPLETE;
3608 KASSERT(i++ < jseg->js_cnt,
3609 ("handle_written_jseg: overflow %d >= %d",
3610 i - 1, jseg->js_cnt));
3611 switch (wk->wk_type) {
3613 handle_written_jaddref(WK_JADDREF(wk));
3616 handle_written_jremref(WK_JREMREF(wk));
3619 rele_jseg(jseg); /* No jsegdep. */
3620 jmvref = WK_JMVREF(wk);
3621 LIST_REMOVE(jmvref, jm_deps);
3622 if ((jmvref->jm_pagedep->pd_state & ONWORKLIST) == 0)
3623 free_pagedep(jmvref->jm_pagedep);
3624 WORKITEM_FREE(jmvref, D_JMVREF);
3627 handle_written_jnewblk(WK_JNEWBLK(wk));
3630 handle_written_jblkdep(&WK_JFREEBLK(wk)->jf_dep);
3633 handle_written_jblkdep(&WK_JTRUNC(wk)->jt_dep);
3636 rele_jseg(jseg); /* No jsegdep. */
3637 WORKITEM_FREE(wk, D_JFSYNC);
3640 handle_written_jfreefrag(WK_JFREEFRAG(wk));
3643 panic("handle_written_jseg: Unknown type %s",
3644 TYPENAME(wk->wk_type));
3650 /* Release the self reference so the structure may be freed. */
3655 * Determine which jsegs are ready for completion processing. Waits for
3656 * synchronize cache to complete as well as forcing in-order completion
3657 * of journal entries.
3660 complete_jsegs(jseg)
3663 struct jblocks *jblocks;
3666 jblocks = jseg->js_jblocks;
3668 * Don't allow out of order completions. If this isn't the first
3669 * block wait for it to write before we're done.
3671 if (jseg != jblocks->jb_writeseg)
3673 /* Iterate through available jsegs processing their entries. */
3674 while (jseg && (jseg->js_state & ALLCOMPLETE) == ALLCOMPLETE) {
3675 jblocks->jb_oldestwrseq = jseg->js_oldseq;
3676 jsegn = TAILQ_NEXT(jseg, js_next);
3677 complete_jseg(jseg);
3680 jblocks->jb_writeseg = jseg;
3682 * Attempt to free jsegs now that oldestwrseq may have advanced.
3684 free_jsegs(jblocks);
3688 * Mark a jseg as DEPCOMPLETE and throw away the buffer. Attempt to handle
3689 * the final completions.
3692 handle_written_jseg(jseg, bp)
3697 if (jseg->js_refs == 0)
3698 panic("handle_written_jseg: No self-reference on %p", jseg);
3699 jseg->js_state |= DEPCOMPLETE;
3701 * We'll never need this buffer again, set flags so it will be
3704 bp->b_flags |= B_INVAL | B_NOCACHE;
3706 complete_jsegs(jseg);
3709 static inline struct jsegdep *
3711 struct inoref *inoref;
3713 struct jsegdep *jsegdep;
3715 jsegdep = inoref->if_jsegdep;
3716 inoref->if_jsegdep = NULL;
3722 * Called once a jremref has made it to stable store. The jremref is marked
3723 * complete and we attempt to free it. Any pagedeps writes sleeping waiting
3724 * for the jremref to complete will be awoken by free_jremref.
3727 handle_written_jremref(jremref)
3728 struct jremref *jremref;
3730 struct inodedep *inodedep;
3731 struct jsegdep *jsegdep;
3732 struct dirrem *dirrem;
3734 /* Grab the jsegdep. */
3735 jsegdep = inoref_jseg(&jremref->jr_ref);
3737 * Remove us from the inoref list.
3739 if (inodedep_lookup(jremref->jr_list.wk_mp, jremref->jr_ref.if_ino,
3741 panic("handle_written_jremref: Lost inodedep");
3742 TAILQ_REMOVE(&inodedep->id_inoreflst, &jremref->jr_ref, if_deps);
3744 * Complete the dirrem.
3746 dirrem = jremref->jr_dirrem;
3747 jremref->jr_dirrem = NULL;
3748 LIST_REMOVE(jremref, jr_deps);
3749 jsegdep->jd_state |= jremref->jr_state & MKDIR_PARENT;
3750 jwork_insert(&dirrem->dm_jwork, jsegdep);
3751 if (LIST_EMPTY(&dirrem->dm_jremrefhd) &&
3752 (dirrem->dm_state & COMPLETE) != 0)
3753 add_to_worklist(&dirrem->dm_list, 0);
3754 free_jremref(jremref);
3758 * Called once a jaddref has made it to stable store. The dependency is
3759 * marked complete and any dependent structures are added to the inode
3760 * bufwait list to be completed as soon as it is written. If a bitmap write
3761 * depends on this entry we move the inode into the inodedephd of the
3762 * bmsafemap dependency and attempt to remove the jaddref from the bmsafemap.
3765 handle_written_jaddref(jaddref)
3766 struct jaddref *jaddref;
3768 struct jsegdep *jsegdep;
3769 struct inodedep *inodedep;
3770 struct diradd *diradd;
3771 struct mkdir *mkdir;
3773 /* Grab the jsegdep. */
3774 jsegdep = inoref_jseg(&jaddref->ja_ref);
3777 if (inodedep_lookup(jaddref->ja_list.wk_mp, jaddref->ja_ino,
3779 panic("handle_written_jaddref: Lost inodedep.");
3780 if (jaddref->ja_diradd == NULL)
3781 panic("handle_written_jaddref: No dependency");
3782 if (jaddref->ja_diradd->da_list.wk_type == D_DIRADD) {
3783 diradd = jaddref->ja_diradd;
3784 WORKLIST_INSERT(&inodedep->id_bufwait, &diradd->da_list);
3785 } else if (jaddref->ja_state & MKDIR_PARENT) {
3786 mkdir = jaddref->ja_mkdir;
3787 WORKLIST_INSERT(&inodedep->id_bufwait, &mkdir->md_list);
3788 } else if (jaddref->ja_state & MKDIR_BODY)
3789 mkdir = jaddref->ja_mkdir;
3791 panic("handle_written_jaddref: Unknown dependency %p",
3792 jaddref->ja_diradd);
3793 jaddref->ja_diradd = NULL; /* also clears ja_mkdir */
3795 * Remove us from the inode list.
3797 TAILQ_REMOVE(&inodedep->id_inoreflst, &jaddref->ja_ref, if_deps);
3799 * The mkdir may be waiting on the jaddref to clear before freeing.
3802 KASSERT(mkdir->md_list.wk_type == D_MKDIR,
3803 ("handle_written_jaddref: Incorrect type for mkdir %s",
3804 TYPENAME(mkdir->md_list.wk_type)));
3805 mkdir->md_jaddref = NULL;
3806 diradd = mkdir->md_diradd;
3807 mkdir->md_state |= DEPCOMPLETE;
3808 complete_mkdir(mkdir);
3810 jwork_insert(&diradd->da_jwork, jsegdep);
3811 if (jaddref->ja_state & NEWBLOCK) {
3812 inodedep->id_state |= ONDEPLIST;
3813 LIST_INSERT_HEAD(&inodedep->id_bmsafemap->sm_inodedephd,
3816 free_jaddref(jaddref);
3820 * Called once a jnewblk journal is written. The allocdirect or allocindir
3821 * is placed in the bmsafemap to await notification of a written bitmap. If
3822 * the operation was canceled we add the segdep to the appropriate
3823 * dependency to free the journal space once the canceling operation
3827 handle_written_jnewblk(jnewblk)
3828 struct jnewblk *jnewblk;
3830 struct bmsafemap *bmsafemap;
3831 struct freefrag *freefrag;
3832 struct freework *freework;
3833 struct jsegdep *jsegdep;
3834 struct newblk *newblk;
3836 /* Grab the jsegdep. */
3837 jsegdep = jnewblk->jn_jsegdep;
3838 jnewblk->jn_jsegdep = NULL;
3839 if (jnewblk->jn_dep == NULL)
3840 panic("handle_written_jnewblk: No dependency for the segdep.");
3841 switch (jnewblk->jn_dep->wk_type) {
3846 * Add the written block to the bmsafemap so it can
3847 * be notified when the bitmap is on disk.
3849 newblk = WK_NEWBLK(jnewblk->jn_dep);
3850 newblk->nb_jnewblk = NULL;
3851 if ((newblk->nb_state & GOINGAWAY) == 0) {
3852 bmsafemap = newblk->nb_bmsafemap;
3853 newblk->nb_state |= ONDEPLIST;
3854 LIST_INSERT_HEAD(&bmsafemap->sm_newblkhd, newblk,
3857 jwork_insert(&newblk->nb_jwork, jsegdep);
3861 * A newblock being removed by a freefrag when replaced by
3864 freefrag = WK_FREEFRAG(jnewblk->jn_dep);
3865 freefrag->ff_jdep = NULL;
3866 jwork_insert(&freefrag->ff_jwork, jsegdep);
3870 * A direct block was removed by truncate.
3872 freework = WK_FREEWORK(jnewblk->jn_dep);
3873 freework->fw_jnewblk = NULL;
3874 jwork_insert(&freework->fw_freeblks->fb_jwork, jsegdep);
3877 panic("handle_written_jnewblk: Unknown type %d.",
3878 jnewblk->jn_dep->wk_type);
3880 jnewblk->jn_dep = NULL;
3881 free_jnewblk(jnewblk);
3885 * Cancel a jfreefrag that won't be needed, probably due to colliding with
3886 * an in-flight allocation that has not yet been committed. Divorce us
3887 * from the freefrag and mark it DEPCOMPLETE so that it may be added
3891 cancel_jfreefrag(jfreefrag)
3892 struct jfreefrag *jfreefrag;
3894 struct freefrag *freefrag;
3896 if (jfreefrag->fr_jsegdep) {
3897 free_jsegdep(jfreefrag->fr_jsegdep);
3898 jfreefrag->fr_jsegdep = NULL;
3900 freefrag = jfreefrag->fr_freefrag;
3901 jfreefrag->fr_freefrag = NULL;
3902 free_jfreefrag(jfreefrag);
3903 freefrag->ff_state |= DEPCOMPLETE;
3904 CTR1(KTR_SUJ, "cancel_jfreefrag: blkno %jd", freefrag->ff_blkno);
3908 * Free a jfreefrag when the parent freefrag is rendered obsolete.
3911 free_jfreefrag(jfreefrag)
3912 struct jfreefrag *jfreefrag;
3915 if (jfreefrag->fr_state & INPROGRESS)
3916 WORKLIST_REMOVE(&jfreefrag->fr_list);
3917 else if (jfreefrag->fr_state & ONWORKLIST)
3918 remove_from_journal(&jfreefrag->fr_list);
3919 if (jfreefrag->fr_freefrag != NULL)
3920 panic("free_jfreefrag: Still attached to a freefrag.");
3921 WORKITEM_FREE(jfreefrag, D_JFREEFRAG);
3925 * Called when the journal write for a jfreefrag completes. The parent
3926 * freefrag is added to the worklist if this completes its dependencies.
3929 handle_written_jfreefrag(jfreefrag)
3930 struct jfreefrag *jfreefrag;
3932 struct jsegdep *jsegdep;
3933 struct freefrag *freefrag;
3935 /* Grab the jsegdep. */
3936 jsegdep = jfreefrag->fr_jsegdep;
3937 jfreefrag->fr_jsegdep = NULL;
3938 freefrag = jfreefrag->fr_freefrag;
3939 if (freefrag == NULL)
3940 panic("handle_written_jfreefrag: No freefrag.");
3941 freefrag->ff_state |= DEPCOMPLETE;
3942 freefrag->ff_jdep = NULL;
3943 jwork_insert(&freefrag->ff_jwork, jsegdep);
3944 if ((freefrag->ff_state & ALLCOMPLETE) == ALLCOMPLETE)
3945 add_to_worklist(&freefrag->ff_list, 0);
3946 jfreefrag->fr_freefrag = NULL;
3947 free_jfreefrag(jfreefrag);
3951 * Called when the journal write for a jfreeblk completes. The jfreeblk
3952 * is removed from the freeblks list of pending journal writes and the
3953 * jsegdep is moved to the freeblks jwork to be completed when all blocks
3954 * have been reclaimed.
3957 handle_written_jblkdep(jblkdep)
3958 struct jblkdep *jblkdep;
3960 struct freeblks *freeblks;
3961 struct jsegdep *jsegdep;
3963 /* Grab the jsegdep. */
3964 jsegdep = jblkdep->jb_jsegdep;
3965 jblkdep->jb_jsegdep = NULL;
3966 freeblks = jblkdep->jb_freeblks;
3967 LIST_REMOVE(jblkdep, jb_deps);
3968 jwork_insert(&freeblks->fb_jwork, jsegdep);
3970 * If the freeblks is all journaled, we can add it to the worklist.
3972 if (LIST_EMPTY(&freeblks->fb_jblkdephd) &&
3973 (freeblks->fb_state & ALLCOMPLETE) == ALLCOMPLETE)
3974 add_to_worklist(&freeblks->fb_list, WK_NODELAY);
3976 free_jblkdep(jblkdep);
3979 static struct jsegdep *
3980 newjsegdep(struct worklist *wk)
3982 struct jsegdep *jsegdep;
3984 jsegdep = malloc(sizeof(*jsegdep), M_JSEGDEP, M_SOFTDEP_FLAGS);
3985 workitem_alloc(&jsegdep->jd_list, D_JSEGDEP, wk->wk_mp);
3986 jsegdep->jd_seg = NULL;
3991 static struct jmvref *
3992 newjmvref(dp, ino, oldoff, newoff)
3998 struct jmvref *jmvref;
4000 jmvref = malloc(sizeof(*jmvref), M_JMVREF, M_SOFTDEP_FLAGS);
4001 workitem_alloc(&jmvref->jm_list, D_JMVREF, ITOVFS(dp));
4002 jmvref->jm_list.wk_state = ATTACHED | DEPCOMPLETE;
4003 jmvref->jm_parent = dp->i_number;
4004 jmvref->jm_ino = ino;
4005 jmvref->jm_oldoff = oldoff;
4006 jmvref->jm_newoff = newoff;
4012 * Allocate a new jremref that tracks the removal of ip from dp with the
4013 * directory entry offset of diroff. Mark the entry as ATTACHED and
4014 * DEPCOMPLETE as we have all the information required for the journal write
4015 * and the directory has already been removed from the buffer. The caller
4016 * is responsible for linking the jremref into the pagedep and adding it
4017 * to the journal to write. The MKDIR_PARENT flag is set if we're doing
4018 * a DOTDOT addition so handle_workitem_remove() can properly assign
4019 * the jsegdep when we're done.
4021 static struct jremref *
4022 newjremref(struct dirrem *dirrem, struct inode *dp, struct inode *ip,
4023 off_t diroff, nlink_t nlink)
4025 struct jremref *jremref;
4027 jremref = malloc(sizeof(*jremref), M_JREMREF, M_SOFTDEP_FLAGS);
4028 workitem_alloc(&jremref->jr_list, D_JREMREF, ITOVFS(dp));
4029 jremref->jr_state = ATTACHED;
4030 newinoref(&jremref->jr_ref, ip->i_number, dp->i_number, diroff,
4032 jremref->jr_dirrem = dirrem;
4038 newinoref(struct inoref *inoref, ino_t ino, ino_t parent, off_t diroff,
4039 nlink_t nlink, uint16_t mode)
4042 inoref->if_jsegdep = newjsegdep(&inoref->if_list);
4043 inoref->if_diroff = diroff;
4044 inoref->if_ino = ino;
4045 inoref->if_parent = parent;
4046 inoref->if_nlink = nlink;
4047 inoref->if_mode = mode;
4051 * Allocate a new jaddref to track the addition of ino to dp at diroff. The
4052 * directory offset may not be known until later. The caller is responsible
4053 * adding the entry to the journal when this information is available. nlink
4054 * should be the link count prior to the addition and mode is only required
4055 * to have the correct FMT.
4057 static struct jaddref *
4058 newjaddref(struct inode *dp, ino_t ino, off_t diroff, int16_t nlink,
4061 struct jaddref *jaddref;
4063 jaddref = malloc(sizeof(*jaddref), M_JADDREF, M_SOFTDEP_FLAGS);
4064 workitem_alloc(&jaddref->ja_list, D_JADDREF, ITOVFS(dp));
4065 jaddref->ja_state = ATTACHED;
4066 jaddref->ja_mkdir = NULL;
4067 newinoref(&jaddref->ja_ref, ino, dp->i_number, diroff, nlink, mode);
4073 * Create a new free dependency for a freework. The caller is responsible
4074 * for adjusting the reference count when it has the lock held. The freedep
4075 * will track an outstanding bitmap write that will ultimately clear the
4076 * freework to continue.
4078 static struct freedep *
4079 newfreedep(struct freework *freework)
4081 struct freedep *freedep;
4083 freedep = malloc(sizeof(*freedep), M_FREEDEP, M_SOFTDEP_FLAGS);
4084 workitem_alloc(&freedep->fd_list, D_FREEDEP, freework->fw_list.wk_mp);
4085 freedep->fd_freework = freework;
4091 * Free a freedep structure once the buffer it is linked to is written. If
4092 * this is the last reference to the freework schedule it for completion.
4095 free_freedep(freedep)
4096 struct freedep *freedep;
4098 struct freework *freework;
4100 freework = freedep->fd_freework;
4101 freework->fw_freeblks->fb_cgwait--;
4102 if (--freework->fw_ref == 0)
4103 freework_enqueue(freework);
4104 WORKITEM_FREE(freedep, D_FREEDEP);
4108 * Allocate a new freework structure that may be a level in an indirect
4109 * when parent is not NULL or a top level block when it is. The top level
4110 * freework structures are allocated without the per-filesystem lock held
4111 * and before the freeblks is visible outside of softdep_setup_freeblocks().
4113 static struct freework *
4114 newfreework(ump, freeblks, parent, lbn, nb, frags, off, journal)
4115 struct ufsmount *ump;
4116 struct freeblks *freeblks;
4117 struct freework *parent;
4124 struct freework *freework;
4126 freework = malloc(sizeof(*freework), M_FREEWORK, M_SOFTDEP_FLAGS);
4127 workitem_alloc(&freework->fw_list, D_FREEWORK, freeblks->fb_list.wk_mp);
4128 freework->fw_state = ATTACHED;
4129 freework->fw_jnewblk = NULL;
4130 freework->fw_freeblks = freeblks;
4131 freework->fw_parent = parent;
4132 freework->fw_lbn = lbn;
4133 freework->fw_blkno = nb;
4134 freework->fw_frags = frags;
4135 freework->fw_indir = NULL;
4136 freework->fw_ref = (MOUNTEDSUJ(UFSTOVFS(ump)) == 0 || lbn >= -NXADDR)
4137 ? 0 : NINDIR(ump->um_fs) + 1;
4138 freework->fw_start = freework->fw_off = off;
4140 newjfreeblk(freeblks, lbn, nb, frags);
4141 if (parent == NULL) {
4143 WORKLIST_INSERT(&freeblks->fb_freeworkhd, &freework->fw_list);
4152 * Eliminate a jfreeblk for a block that does not need journaling.
4155 cancel_jfreeblk(freeblks, blkno)
4156 struct freeblks *freeblks;
4159 struct jfreeblk *jfreeblk;
4160 struct jblkdep *jblkdep;
4162 LIST_FOREACH(jblkdep, &freeblks->fb_jblkdephd, jb_deps) {
4163 if (jblkdep->jb_list.wk_type != D_JFREEBLK)
4165 jfreeblk = WK_JFREEBLK(&jblkdep->jb_list);
4166 if (jfreeblk->jf_blkno == blkno)
4169 if (jblkdep == NULL)
4171 CTR1(KTR_SUJ, "cancel_jfreeblk: blkno %jd", blkno);
4172 free_jsegdep(jblkdep->jb_jsegdep);
4173 LIST_REMOVE(jblkdep, jb_deps);
4174 WORKITEM_FREE(jfreeblk, D_JFREEBLK);
4178 * Allocate a new jfreeblk to journal top level block pointer when truncating
4179 * a file. The caller must add this to the worklist when the per-filesystem
4182 static struct jfreeblk *
4183 newjfreeblk(freeblks, lbn, blkno, frags)
4184 struct freeblks *freeblks;
4189 struct jfreeblk *jfreeblk;
4191 jfreeblk = malloc(sizeof(*jfreeblk), M_JFREEBLK, M_SOFTDEP_FLAGS);
4192 workitem_alloc(&jfreeblk->jf_dep.jb_list, D_JFREEBLK,
4193 freeblks->fb_list.wk_mp);
4194 jfreeblk->jf_dep.jb_jsegdep = newjsegdep(&jfreeblk->jf_dep.jb_list);
4195 jfreeblk->jf_dep.jb_freeblks = freeblks;
4196 jfreeblk->jf_ino = freeblks->fb_inum;
4197 jfreeblk->jf_lbn = lbn;
4198 jfreeblk->jf_blkno = blkno;
4199 jfreeblk->jf_frags = frags;
4200 LIST_INSERT_HEAD(&freeblks->fb_jblkdephd, &jfreeblk->jf_dep, jb_deps);
4206 * The journal is only prepared to handle full-size block numbers, so we
4207 * have to adjust the record to reflect the change to a full-size block.
4208 * For example, suppose we have a block made up of fragments 8-15 and
4209 * want to free its last two fragments. We are given a request that says:
4210 * FREEBLK ino=5, blkno=14, lbn=0, frags=2, oldfrags=0
4211 * where frags are the number of fragments to free and oldfrags are the
4212 * number of fragments to keep. To block align it, we have to change it to
4213 * have a valid full-size blkno, so it becomes:
4214 * FREEBLK ino=5, blkno=8, lbn=0, frags=2, oldfrags=6
4217 adjust_newfreework(freeblks, frag_offset)
4218 struct freeblks *freeblks;
4221 struct jfreeblk *jfreeblk;
4223 KASSERT((LIST_FIRST(&freeblks->fb_jblkdephd) != NULL &&
4224 LIST_FIRST(&freeblks->fb_jblkdephd)->jb_list.wk_type == D_JFREEBLK),
4225 ("adjust_newfreework: Missing freeblks dependency"));
4227 jfreeblk = WK_JFREEBLK(LIST_FIRST(&freeblks->fb_jblkdephd));
4228 jfreeblk->jf_blkno -= frag_offset;
4229 jfreeblk->jf_frags += frag_offset;
4233 * Allocate a new jtrunc to track a partial truncation.
4235 static struct jtrunc *
4236 newjtrunc(freeblks, size, extsize)
4237 struct freeblks *freeblks;
4241 struct jtrunc *jtrunc;
4243 jtrunc = malloc(sizeof(*jtrunc), M_JTRUNC, M_SOFTDEP_FLAGS);
4244 workitem_alloc(&jtrunc->jt_dep.jb_list, D_JTRUNC,
4245 freeblks->fb_list.wk_mp);
4246 jtrunc->jt_dep.jb_jsegdep = newjsegdep(&jtrunc->jt_dep.jb_list);
4247 jtrunc->jt_dep.jb_freeblks = freeblks;
4248 jtrunc->jt_ino = freeblks->fb_inum;
4249 jtrunc->jt_size = size;
4250 jtrunc->jt_extsize = extsize;
4251 LIST_INSERT_HEAD(&freeblks->fb_jblkdephd, &jtrunc->jt_dep, jb_deps);
4257 * If we're canceling a new bitmap we have to search for another ref
4258 * to move into the bmsafemap dep. This might be better expressed
4259 * with another structure.
4262 move_newblock_dep(jaddref, inodedep)
4263 struct jaddref *jaddref;
4264 struct inodedep *inodedep;
4266 struct inoref *inoref;
4267 struct jaddref *jaddrefn;
4270 for (inoref = TAILQ_NEXT(&jaddref->ja_ref, if_deps); inoref;
4271 inoref = TAILQ_NEXT(inoref, if_deps)) {
4272 if ((jaddref->ja_state & NEWBLOCK) &&
4273 inoref->if_list.wk_type == D_JADDREF) {
4274 jaddrefn = (struct jaddref *)inoref;
4278 if (jaddrefn == NULL)
4280 jaddrefn->ja_state &= ~(ATTACHED | UNDONE);
4281 jaddrefn->ja_state |= jaddref->ja_state &
4282 (ATTACHED | UNDONE | NEWBLOCK);
4283 jaddref->ja_state &= ~(ATTACHED | UNDONE | NEWBLOCK);
4284 jaddref->ja_state |= ATTACHED;
4285 LIST_REMOVE(jaddref, ja_bmdeps);
4286 LIST_INSERT_HEAD(&inodedep->id_bmsafemap->sm_jaddrefhd, jaddrefn,
4291 * Cancel a jaddref either before it has been written or while it is being
4292 * written. This happens when a link is removed before the add reaches
4293 * the disk. The jaddref dependency is kept linked into the bmsafemap
4294 * and inode to prevent the link count or bitmap from reaching the disk
4295 * until handle_workitem_remove() re-adjusts the counts and bitmaps as
4298 * Returns 1 if the canceled addref requires journaling of the remove and
4302 cancel_jaddref(jaddref, inodedep, wkhd)
4303 struct jaddref *jaddref;
4304 struct inodedep *inodedep;
4305 struct workhead *wkhd;
4307 struct inoref *inoref;
4308 struct jsegdep *jsegdep;
4311 KASSERT((jaddref->ja_state & COMPLETE) == 0,
4312 ("cancel_jaddref: Canceling complete jaddref"));
4313 if (jaddref->ja_state & (INPROGRESS | COMPLETE))
4317 if (inodedep == NULL)
4318 if (inodedep_lookup(jaddref->ja_list.wk_mp, jaddref->ja_ino,
4320 panic("cancel_jaddref: Lost inodedep");
4322 * We must adjust the nlink of any reference operation that follows
4323 * us so that it is consistent with the in-memory reference. This
4324 * ensures that inode nlink rollbacks always have the correct link.
4327 for (inoref = TAILQ_NEXT(&jaddref->ja_ref, if_deps); inoref;
4328 inoref = TAILQ_NEXT(inoref, if_deps)) {
4329 if (inoref->if_state & GOINGAWAY)
4334 jsegdep = inoref_jseg(&jaddref->ja_ref);
4335 if (jaddref->ja_state & NEWBLOCK)
4336 move_newblock_dep(jaddref, inodedep);
4337 wake_worklist(&jaddref->ja_list);
4338 jaddref->ja_mkdir = NULL;
4339 if (jaddref->ja_state & INPROGRESS) {
4340 jaddref->ja_state &= ~INPROGRESS;
4341 WORKLIST_REMOVE(&jaddref->ja_list);
4342 jwork_insert(wkhd, jsegdep);
4344 free_jsegdep(jsegdep);
4345 if (jaddref->ja_state & DEPCOMPLETE)
4346 remove_from_journal(&jaddref->ja_list);
4348 jaddref->ja_state |= (GOINGAWAY | DEPCOMPLETE);
4350 * Leave NEWBLOCK jaddrefs on the inodedep so handle_workitem_remove
4351 * can arrange for them to be freed with the bitmap. Otherwise we
4352 * no longer need this addref attached to the inoreflst and it
4353 * will incorrectly adjust nlink if we leave it.
4355 if ((jaddref->ja_state & NEWBLOCK) == 0) {
4356 TAILQ_REMOVE(&inodedep->id_inoreflst, &jaddref->ja_ref,
4358 jaddref->ja_state |= COMPLETE;
4359 free_jaddref(jaddref);
4363 * Leave the head of the list for jsegdeps for fast merging.
4365 if (LIST_FIRST(wkhd) != NULL) {
4366 jaddref->ja_state |= ONWORKLIST;
4367 LIST_INSERT_AFTER(LIST_FIRST(wkhd), &jaddref->ja_list, wk_list);
4369 WORKLIST_INSERT(wkhd, &jaddref->ja_list);
4375 * Attempt to free a jaddref structure when some work completes. This
4376 * should only succeed once the entry is written and all dependencies have
4380 free_jaddref(jaddref)
4381 struct jaddref *jaddref;
4384 if ((jaddref->ja_state & ALLCOMPLETE) != ALLCOMPLETE)
4386 if (jaddref->ja_ref.if_jsegdep)
4387 panic("free_jaddref: segdep attached to jaddref %p(0x%X)\n",
4388 jaddref, jaddref->ja_state);
4389 if (jaddref->ja_state & NEWBLOCK)
4390 LIST_REMOVE(jaddref, ja_bmdeps);
4391 if (jaddref->ja_state & (INPROGRESS | ONWORKLIST))
4392 panic("free_jaddref: Bad state %p(0x%X)",
4393 jaddref, jaddref->ja_state);
4394 if (jaddref->ja_mkdir != NULL)
4395 panic("free_jaddref: Work pending, 0x%X\n", jaddref->ja_state);
4396 WORKITEM_FREE(jaddref, D_JADDREF);
4400 * Free a jremref structure once it has been written or discarded.
4403 free_jremref(jremref)
4404 struct jremref *jremref;
4407 if (jremref->jr_ref.if_jsegdep)
4408 free_jsegdep(jremref->jr_ref.if_jsegdep);
4409 if (jremref->jr_state & INPROGRESS)
4410 panic("free_jremref: IO still pending");
4411 WORKITEM_FREE(jremref, D_JREMREF);
4415 * Free a jnewblk structure.
4418 free_jnewblk(jnewblk)
4419 struct jnewblk *jnewblk;
4422 if ((jnewblk->jn_state & ALLCOMPLETE) != ALLCOMPLETE)
4424 LIST_REMOVE(jnewblk, jn_deps);
4425 if (jnewblk->jn_dep != NULL)
4426 panic("free_jnewblk: Dependency still attached.");
4427 WORKITEM_FREE(jnewblk, D_JNEWBLK);
4431 * Cancel a jnewblk which has been been made redundant by frag extension.
4434 cancel_jnewblk(jnewblk, wkhd)
4435 struct jnewblk *jnewblk;
4436 struct workhead *wkhd;
4438 struct jsegdep *jsegdep;
4440 CTR1(KTR_SUJ, "cancel_jnewblk: blkno %jd", jnewblk->jn_blkno);
4441 jsegdep = jnewblk->jn_jsegdep;
4442 if (jnewblk->jn_jsegdep == NULL || jnewblk->jn_dep == NULL)
4443 panic("cancel_jnewblk: Invalid state");
4444 jnewblk->jn_jsegdep = NULL;
4445 jnewblk->jn_dep = NULL;
4446 jnewblk->jn_state |= GOINGAWAY;
4447 if (jnewblk->jn_state & INPROGRESS) {
4448 jnewblk->jn_state &= ~INPROGRESS;
4449 WORKLIST_REMOVE(&jnewblk->jn_list);
4450 jwork_insert(wkhd, jsegdep);
4452 free_jsegdep(jsegdep);
4453 remove_from_journal(&jnewblk->jn_list);
4455 wake_worklist(&jnewblk->jn_list);
4456 WORKLIST_INSERT(wkhd, &jnewblk->jn_list);
4460 free_jblkdep(jblkdep)
4461 struct jblkdep *jblkdep;
4464 if (jblkdep->jb_list.wk_type == D_JFREEBLK)
4465 WORKITEM_FREE(jblkdep, D_JFREEBLK);
4466 else if (jblkdep->jb_list.wk_type == D_JTRUNC)
4467 WORKITEM_FREE(jblkdep, D_JTRUNC);
4469 panic("free_jblkdep: Unexpected type %s",
4470 TYPENAME(jblkdep->jb_list.wk_type));
4474 * Free a single jseg once it is no longer referenced in memory or on
4475 * disk. Reclaim journal blocks and dependencies waiting for the segment
4479 free_jseg(jseg, jblocks)
4481 struct jblocks *jblocks;
4483 struct freework *freework;
4486 * Free freework structures that were lingering to indicate freed
4487 * indirect blocks that forced journal write ordering on reallocate.
4489 while ((freework = LIST_FIRST(&jseg->js_indirs)) != NULL)
4490 indirblk_remove(freework);
4491 if (jblocks->jb_oldestseg == jseg)
4492 jblocks->jb_oldestseg = TAILQ_NEXT(jseg, js_next);
4493 TAILQ_REMOVE(&jblocks->jb_segs, jseg, js_next);
4494 jblocks_free(jblocks, jseg->js_list.wk_mp, jseg->js_size);
4495 KASSERT(LIST_EMPTY(&jseg->js_entries),
4496 ("free_jseg: Freed jseg has valid entries."));
4497 WORKITEM_FREE(jseg, D_JSEG);
4501 * Free all jsegs that meet the criteria for being reclaimed and update
4506 struct jblocks *jblocks;
4511 * Free only those jsegs which have none allocated before them to
4512 * preserve the journal space ordering.
4514 while ((jseg = TAILQ_FIRST(&jblocks->jb_segs)) != NULL) {
4516 * Only reclaim space when nothing depends on this journal
4517 * set and another set has written that it is no longer
4520 if (jseg->js_refs != 0) {
4521 jblocks->jb_oldestseg = jseg;
4524 if ((jseg->js_state & ALLCOMPLETE) != ALLCOMPLETE)
4526 if (jseg->js_seq > jblocks->jb_oldestwrseq)
4529 * We can free jsegs that didn't write entries when
4530 * oldestwrseq == js_seq.
4532 if (jseg->js_seq == jblocks->jb_oldestwrseq &&
4535 free_jseg(jseg, jblocks);
4538 * If we exited the loop above we still must discover the
4539 * oldest valid segment.
4542 for (jseg = jblocks->jb_oldestseg; jseg != NULL;
4543 jseg = TAILQ_NEXT(jseg, js_next))
4544 if (jseg->js_refs != 0)
4546 jblocks->jb_oldestseg = jseg;
4548 * The journal has no valid records but some jsegs may still be
4549 * waiting on oldestwrseq to advance. We force a small record
4550 * out to permit these lingering records to be reclaimed.
4552 if (jblocks->jb_oldestseg == NULL && !TAILQ_EMPTY(&jblocks->jb_segs))
4553 jblocks->jb_needseg = 1;
4557 * Release one reference to a jseg and free it if the count reaches 0. This
4558 * should eventually reclaim journal space as well.
4565 KASSERT(jseg->js_refs > 0,
4566 ("free_jseg: Invalid refcnt %d", jseg->js_refs));
4567 if (--jseg->js_refs != 0)
4569 free_jsegs(jseg->js_jblocks);
4573 * Release a jsegdep and decrement the jseg count.
4576 free_jsegdep(jsegdep)
4577 struct jsegdep *jsegdep;
4580 if (jsegdep->jd_seg)
4581 rele_jseg(jsegdep->jd_seg);
4582 WORKITEM_FREE(jsegdep, D_JSEGDEP);
4586 * Wait for a journal item to make it to disk. Initiate journal processing
4591 struct worklist *wk;
4595 LOCK_OWNED(VFSTOUFS(wk->wk_mp));
4597 * Blocking journal waits cause slow synchronous behavior. Record
4598 * stats on the frequency of these blocking operations.
4600 if (waitfor == MNT_WAIT) {
4601 stat_journal_wait++;
4602 switch (wk->wk_type) {
4605 stat_jwait_filepage++;
4609 stat_jwait_freeblks++;
4612 stat_jwait_newblk++;
4622 * If IO has not started we process the journal. We can't mark the
4623 * worklist item as IOWAITING because we drop the lock while
4624 * processing the journal and the worklist entry may be freed after
4625 * this point. The caller may call back in and re-issue the request.
4627 if ((wk->wk_state & INPROGRESS) == 0) {
4628 softdep_process_journal(wk->wk_mp, wk, waitfor);
4629 if (waitfor != MNT_WAIT)
4633 if (waitfor != MNT_WAIT)
4635 wait_worklist(wk, "jwait");
4640 * Lookup an inodedep based on an inode pointer and set the nlinkdelta as
4641 * appropriate. This is a convenience function to reduce duplicate code
4642 * for the setup and revert functions below.
4644 static struct inodedep *
4645 inodedep_lookup_ip(ip)
4648 struct inodedep *inodedep;
4650 KASSERT(ip->i_nlink >= ip->i_effnlink,
4651 ("inodedep_lookup_ip: bad delta"));
4652 (void) inodedep_lookup(ITOVFS(ip), ip->i_number, DEPALLOC,
4654 inodedep->id_nlinkdelta = ip->i_nlink - ip->i_effnlink;
4655 KASSERT((inodedep->id_state & UNLINKED) == 0, ("inode unlinked"));
4661 * Called prior to creating a new inode and linking it to a directory. The
4662 * jaddref structure must already be allocated by softdep_setup_inomapdep
4663 * and it is discovered here so we can initialize the mode and update
4667 softdep_setup_create(dp, ip)
4671 struct inodedep *inodedep;
4672 struct jaddref *jaddref;
4675 KASSERT(MOUNTEDSOFTDEP(ITOVFS(dp)) != 0,
4676 ("softdep_setup_create called on non-softdep filesystem"));
4677 KASSERT(ip->i_nlink == 1,
4678 ("softdep_setup_create: Invalid link count."));
4680 ACQUIRE_LOCK(ITOUMP(dp));
4681 inodedep = inodedep_lookup_ip(ip);
4682 if (DOINGSUJ(dvp)) {
4683 jaddref = (struct jaddref *)TAILQ_LAST(&inodedep->id_inoreflst,
4685 KASSERT(jaddref != NULL && jaddref->ja_parent == dp->i_number,
4686 ("softdep_setup_create: No addref structure present."));
4688 softdep_prelink(dvp, NULL);
4689 FREE_LOCK(ITOUMP(dp));
4693 * Create a jaddref structure to track the addition of a DOTDOT link when
4694 * we are reparenting an inode as part of a rename. This jaddref will be
4695 * found by softdep_setup_directory_change. Adjusts nlinkdelta for
4696 * non-journaling softdep.
4699 softdep_setup_dotdot_link(dp, ip)
4703 struct inodedep *inodedep;
4704 struct jaddref *jaddref;
4707 KASSERT(MOUNTEDSOFTDEP(ITOVFS(dp)) != 0,
4708 ("softdep_setup_dotdot_link called on non-softdep filesystem"));
4712 * We don't set MKDIR_PARENT as this is not tied to a mkdir and
4713 * is used as a normal link would be.
4716 jaddref = newjaddref(ip, dp->i_number, DOTDOT_OFFSET,
4717 dp->i_effnlink - 1, dp->i_mode);
4718 ACQUIRE_LOCK(ITOUMP(dp));
4719 inodedep = inodedep_lookup_ip(dp);
4721 TAILQ_INSERT_TAIL(&inodedep->id_inoreflst, &jaddref->ja_ref,
4723 softdep_prelink(dvp, ITOV(ip));
4724 FREE_LOCK(ITOUMP(dp));
4728 * Create a jaddref structure to track a new link to an inode. The directory
4729 * offset is not known until softdep_setup_directory_add or
4730 * softdep_setup_directory_change. Adjusts nlinkdelta for non-journaling
4734 softdep_setup_link(dp, ip)
4738 struct inodedep *inodedep;
4739 struct jaddref *jaddref;
4742 KASSERT(MOUNTEDSOFTDEP(ITOVFS(dp)) != 0,
4743 ("softdep_setup_link called on non-softdep filesystem"));
4747 jaddref = newjaddref(dp, ip->i_number, 0, ip->i_effnlink - 1,
4749 ACQUIRE_LOCK(ITOUMP(dp));
4750 inodedep = inodedep_lookup_ip(ip);
4752 TAILQ_INSERT_TAIL(&inodedep->id_inoreflst, &jaddref->ja_ref,
4754 softdep_prelink(dvp, ITOV(ip));
4755 FREE_LOCK(ITOUMP(dp));
4759 * Called to create the jaddref structures to track . and .. references as
4760 * well as lookup and further initialize the incomplete jaddref created
4761 * by softdep_setup_inomapdep when the inode was allocated. Adjusts
4762 * nlinkdelta for non-journaling softdep.
4765 softdep_setup_mkdir(dp, ip)
4769 struct inodedep *inodedep;
4770 struct jaddref *dotdotaddref;
4771 struct jaddref *dotaddref;
4772 struct jaddref *jaddref;
4775 KASSERT(MOUNTEDSOFTDEP(ITOVFS(dp)) != 0,
4776 ("softdep_setup_mkdir called on non-softdep filesystem"));
4778 dotaddref = dotdotaddref = NULL;
4779 if (DOINGSUJ(dvp)) {
4780 dotaddref = newjaddref(ip, ip->i_number, DOT_OFFSET, 1,
4782 dotaddref->ja_state |= MKDIR_BODY;
4783 dotdotaddref = newjaddref(ip, dp->i_number, DOTDOT_OFFSET,
4784 dp->i_effnlink - 1, dp->i_mode);
4785 dotdotaddref->ja_state |= MKDIR_PARENT;
4787 ACQUIRE_LOCK(ITOUMP(dp));
4788 inodedep = inodedep_lookup_ip(ip);
4789 if (DOINGSUJ(dvp)) {
4790 jaddref = (struct jaddref *)TAILQ_LAST(&inodedep->id_inoreflst,
4792 KASSERT(jaddref != NULL,
4793 ("softdep_setup_mkdir: No addref structure present."));
4794 KASSERT(jaddref->ja_parent == dp->i_number,
4795 ("softdep_setup_mkdir: bad parent %ju",
4796 (uintmax_t)jaddref->ja_parent));
4797 TAILQ_INSERT_BEFORE(&jaddref->ja_ref, &dotaddref->ja_ref,
4800 inodedep = inodedep_lookup_ip(dp);
4802 TAILQ_INSERT_TAIL(&inodedep->id_inoreflst,
4803 &dotdotaddref->ja_ref, if_deps);
4804 softdep_prelink(ITOV(dp), NULL);
4805 FREE_LOCK(ITOUMP(dp));
4809 * Called to track nlinkdelta of the inode and parent directories prior to
4810 * unlinking a directory.
4813 softdep_setup_rmdir(dp, ip)
4819 KASSERT(MOUNTEDSOFTDEP(ITOVFS(dp)) != 0,
4820 ("softdep_setup_rmdir called on non-softdep filesystem"));
4822 ACQUIRE_LOCK(ITOUMP(dp));
4823 (void) inodedep_lookup_ip(ip);
4824 (void) inodedep_lookup_ip(dp);
4825 softdep_prelink(dvp, ITOV(ip));
4826 FREE_LOCK(ITOUMP(dp));
4830 * Called to track nlinkdelta of the inode and parent directories prior to
4834 softdep_setup_unlink(dp, ip)
4840 KASSERT(MOUNTEDSOFTDEP(ITOVFS(dp)) != 0,
4841 ("softdep_setup_unlink called on non-softdep filesystem"));
4843 ACQUIRE_LOCK(ITOUMP(dp));
4844 (void) inodedep_lookup_ip(ip);
4845 (void) inodedep_lookup_ip(dp);
4846 softdep_prelink(dvp, ITOV(ip));
4847 FREE_LOCK(ITOUMP(dp));
4851 * Called to release the journal structures created by a failed non-directory
4852 * creation. Adjusts nlinkdelta for non-journaling softdep.
4855 softdep_revert_create(dp, ip)
4859 struct inodedep *inodedep;
4860 struct jaddref *jaddref;
4863 KASSERT(MOUNTEDSOFTDEP(ITOVFS((dp))) != 0,
4864 ("softdep_revert_create called on non-softdep filesystem"));
4866 ACQUIRE_LOCK(ITOUMP(dp));
4867 inodedep = inodedep_lookup_ip(ip);
4868 if (DOINGSUJ(dvp)) {
4869 jaddref = (struct jaddref *)TAILQ_LAST(&inodedep->id_inoreflst,
4871 KASSERT(jaddref->ja_parent == dp->i_number,
4872 ("softdep_revert_create: addref parent mismatch"));
4873 cancel_jaddref(jaddref, inodedep, &inodedep->id_inowait);
4875 FREE_LOCK(ITOUMP(dp));
4879 * Called to release the journal structures created by a failed link
4880 * addition. Adjusts nlinkdelta for non-journaling softdep.
4883 softdep_revert_link(dp, ip)
4887 struct inodedep *inodedep;
4888 struct jaddref *jaddref;
4891 KASSERT(MOUNTEDSOFTDEP(ITOVFS(dp)) != 0,
4892 ("softdep_revert_link called on non-softdep filesystem"));
4894 ACQUIRE_LOCK(ITOUMP(dp));
4895 inodedep = inodedep_lookup_ip(ip);
4896 if (DOINGSUJ(dvp)) {
4897 jaddref = (struct jaddref *)TAILQ_LAST(&inodedep->id_inoreflst,
4899 KASSERT(jaddref->ja_parent == dp->i_number,
4900 ("softdep_revert_link: addref parent mismatch"));
4901 cancel_jaddref(jaddref, inodedep, &inodedep->id_inowait);
4903 FREE_LOCK(ITOUMP(dp));
4907 * Called to release the journal structures created by a failed mkdir
4908 * attempt. Adjusts nlinkdelta for non-journaling softdep.
4911 softdep_revert_mkdir(dp, ip)
4915 struct inodedep *inodedep;
4916 struct jaddref *jaddref;
4917 struct jaddref *dotaddref;
4920 KASSERT(MOUNTEDSOFTDEP(ITOVFS(dp)) != 0,
4921 ("softdep_revert_mkdir called on non-softdep filesystem"));
4924 ACQUIRE_LOCK(ITOUMP(dp));
4925 inodedep = inodedep_lookup_ip(dp);
4926 if (DOINGSUJ(dvp)) {
4927 jaddref = (struct jaddref *)TAILQ_LAST(&inodedep->id_inoreflst,
4929 KASSERT(jaddref->ja_parent == ip->i_number,
4930 ("softdep_revert_mkdir: dotdot addref parent mismatch"));
4931 cancel_jaddref(jaddref, inodedep, &inodedep->id_inowait);
4933 inodedep = inodedep_lookup_ip(ip);
4934 if (DOINGSUJ(dvp)) {
4935 jaddref = (struct jaddref *)TAILQ_LAST(&inodedep->id_inoreflst,
4937 KASSERT(jaddref->ja_parent == dp->i_number,
4938 ("softdep_revert_mkdir: addref parent mismatch"));
4939 dotaddref = (struct jaddref *)TAILQ_PREV(&jaddref->ja_ref,
4940 inoreflst, if_deps);
4941 cancel_jaddref(jaddref, inodedep, &inodedep->id_inowait);
4942 KASSERT(dotaddref->ja_parent == ip->i_number,
4943 ("softdep_revert_mkdir: dot addref parent mismatch"));
4944 cancel_jaddref(dotaddref, inodedep, &inodedep->id_inowait);
4946 FREE_LOCK(ITOUMP(dp));
4950 * Called to correct nlinkdelta after a failed rmdir.
4953 softdep_revert_rmdir(dp, ip)
4958 KASSERT(MOUNTEDSOFTDEP(ITOVFS(dp)) != 0,
4959 ("softdep_revert_rmdir called on non-softdep filesystem"));
4960 ACQUIRE_LOCK(ITOUMP(dp));
4961 (void) inodedep_lookup_ip(ip);
4962 (void) inodedep_lookup_ip(dp);
4963 FREE_LOCK(ITOUMP(dp));
4967 * Protecting the freemaps (or bitmaps).
4969 * To eliminate the need to execute fsck before mounting a filesystem
4970 * after a power failure, one must (conservatively) guarantee that the
4971 * on-disk copy of the bitmaps never indicate that a live inode or block is
4972 * free. So, when a block or inode is allocated, the bitmap should be
4973 * updated (on disk) before any new pointers. When a block or inode is
4974 * freed, the bitmap should not be updated until all pointers have been
4975 * reset. The latter dependency is handled by the delayed de-allocation
4976 * approach described below for block and inode de-allocation. The former
4977 * dependency is handled by calling the following procedure when a block or
4978 * inode is allocated. When an inode is allocated an "inodedep" is created
4979 * with its DEPCOMPLETE flag cleared until its bitmap is written to disk.
4980 * Each "inodedep" is also inserted into the hash indexing structure so
4981 * that any additional link additions can be made dependent on the inode
4984 * The ufs filesystem maintains a number of free block counts (e.g., per
4985 * cylinder group, per cylinder and per <cylinder, rotational position> pair)
4986 * in addition to the bitmaps. These counts are used to improve efficiency
4987 * during allocation and therefore must be consistent with the bitmaps.
4988 * There is no convenient way to guarantee post-crash consistency of these
4989 * counts with simple update ordering, for two main reasons: (1) The counts
4990 * and bitmaps for a single cylinder group block are not in the same disk
4991 * sector. If a disk write is interrupted (e.g., by power failure), one may
4992 * be written and the other not. (2) Some of the counts are located in the
4993 * superblock rather than the cylinder group block. So, we focus our soft
4994 * updates implementation on protecting the bitmaps. When mounting a
4995 * filesystem, we recompute the auxiliary counts from the bitmaps.
4999 * Called just after updating the cylinder group block to allocate an inode.
5002 softdep_setup_inomapdep(bp, ip, newinum, mode)
5003 struct buf *bp; /* buffer for cylgroup block with inode map */
5004 struct inode *ip; /* inode related to allocation */
5005 ino_t newinum; /* new inode number being allocated */
5008 struct inodedep *inodedep;
5009 struct bmsafemap *bmsafemap;
5010 struct jaddref *jaddref;
5015 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
5016 ("softdep_setup_inomapdep called on non-softdep filesystem"));
5017 fs = VFSTOUFS(mp)->um_fs;
5021 * Allocate the journal reference add structure so that the bitmap
5022 * can be dependent on it.
5024 if (MOUNTEDSUJ(mp)) {
5025 jaddref = newjaddref(ip, newinum, 0, 0, mode);
5026 jaddref->ja_state |= NEWBLOCK;
5030 * Create a dependency for the newly allocated inode.
5031 * Panic if it already exists as something is seriously wrong.
5032 * Otherwise add it to the dependency list for the buffer holding
5033 * the cylinder group map from which it was allocated.
5035 * We have to preallocate a bmsafemap entry in case it is needed
5036 * in bmsafemap_lookup since once we allocate the inodedep, we
5037 * have to finish initializing it before we can FREE_LOCK().
5038 * By preallocating, we avoid FREE_LOCK() while doing a malloc
5039 * in bmsafemap_lookup. We cannot call bmsafemap_lookup before
5040 * creating the inodedep as it can be freed during the time
5041 * that we FREE_LOCK() while allocating the inodedep. We must
5042 * call workitem_alloc() before entering the locked section as
5043 * it also acquires the lock and we must avoid trying doing so
5046 bmsafemap = malloc(sizeof(struct bmsafemap),
5047 M_BMSAFEMAP, M_SOFTDEP_FLAGS);
5048 workitem_alloc(&bmsafemap->sm_list, D_BMSAFEMAP, mp);
5049 ACQUIRE_LOCK(ITOUMP(ip));
5050 if ((inodedep_lookup(mp, newinum, DEPALLOC, &inodedep)))
5051 panic("softdep_setup_inomapdep: dependency %p for new"
5052 "inode already exists", inodedep);
5053 bmsafemap = bmsafemap_lookup(mp, bp, ino_to_cg(fs, newinum), bmsafemap);
5055 LIST_INSERT_HEAD(&bmsafemap->sm_jaddrefhd, jaddref, ja_bmdeps);
5056 TAILQ_INSERT_TAIL(&inodedep->id_inoreflst, &jaddref->ja_ref,
5059 inodedep->id_state |= ONDEPLIST;
5060 LIST_INSERT_HEAD(&bmsafemap->sm_inodedephd, inodedep, id_deps);
5062 inodedep->id_bmsafemap = bmsafemap;
5063 inodedep->id_state &= ~DEPCOMPLETE;
5064 FREE_LOCK(ITOUMP(ip));
5068 * Called just after updating the cylinder group block to
5069 * allocate block or fragment.
5072 softdep_setup_blkmapdep(bp, mp, newblkno, frags, oldfrags)
5073 struct buf *bp; /* buffer for cylgroup block with block map */
5074 struct mount *mp; /* filesystem doing allocation */
5075 ufs2_daddr_t newblkno; /* number of newly allocated block */
5076 int frags; /* Number of fragments. */
5077 int oldfrags; /* Previous number of fragments for extend. */
5079 struct newblk *newblk;
5080 struct bmsafemap *bmsafemap;
5081 struct jnewblk *jnewblk;
5082 struct ufsmount *ump;
5085 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
5086 ("softdep_setup_blkmapdep called on non-softdep filesystem"));
5091 * Create a dependency for the newly allocated block.
5092 * Add it to the dependency list for the buffer holding
5093 * the cylinder group map from which it was allocated.
5095 if (MOUNTEDSUJ(mp)) {
5096 jnewblk = malloc(sizeof(*jnewblk), M_JNEWBLK, M_SOFTDEP_FLAGS);
5097 workitem_alloc(&jnewblk->jn_list, D_JNEWBLK, mp);
5098 jnewblk->jn_jsegdep = newjsegdep(&jnewblk->jn_list);
5099 jnewblk->jn_state = ATTACHED;
5100 jnewblk->jn_blkno = newblkno;
5101 jnewblk->jn_frags = frags;
5102 jnewblk->jn_oldfrags = oldfrags;
5110 cgp = (struct cg *)bp->b_data;
5111 blksfree = cg_blksfree(cgp);
5112 bno = dtogd(fs, jnewblk->jn_blkno);
5113 for (i = jnewblk->jn_oldfrags; i < jnewblk->jn_frags;
5115 if (isset(blksfree, bno + i))
5116 panic("softdep_setup_blkmapdep: "
5117 "free fragment %d from %d-%d "
5118 "state 0x%X dep %p", i,
5119 jnewblk->jn_oldfrags,
5129 "softdep_setup_blkmapdep: blkno %jd frags %d oldfrags %d",
5130 newblkno, frags, oldfrags);
5132 if (newblk_lookup(mp, newblkno, DEPALLOC, &newblk) != 0)
5133 panic("softdep_setup_blkmapdep: found block");
5134 newblk->nb_bmsafemap = bmsafemap = bmsafemap_lookup(mp, bp,
5135 dtog(fs, newblkno), NULL);
5137 jnewblk->jn_dep = (struct worklist *)newblk;
5138 LIST_INSERT_HEAD(&bmsafemap->sm_jnewblkhd, jnewblk, jn_deps);
5140 newblk->nb_state |= ONDEPLIST;
5141 LIST_INSERT_HEAD(&bmsafemap->sm_newblkhd, newblk, nb_deps);
5143 newblk->nb_bmsafemap = bmsafemap;
5144 newblk->nb_jnewblk = jnewblk;
5148 #define BMSAFEMAP_HASH(ump, cg) \
5149 (&(ump)->bmsafemap_hashtbl[(cg) & (ump)->bmsafemap_hash_size])
5152 bmsafemap_find(bmsafemaphd, cg, bmsafemapp)
5153 struct bmsafemap_hashhead *bmsafemaphd;
5155 struct bmsafemap **bmsafemapp;
5157 struct bmsafemap *bmsafemap;
5159 LIST_FOREACH(bmsafemap, bmsafemaphd, sm_hash)
5160 if (bmsafemap->sm_cg == cg)
5163 *bmsafemapp = bmsafemap;
5172 * Find the bmsafemap associated with a cylinder group buffer.
5173 * If none exists, create one. The buffer must be locked when
5174 * this routine is called and this routine must be called with
5175 * the softdep lock held. To avoid giving up the lock while
5176 * allocating a new bmsafemap, a preallocated bmsafemap may be
5177 * provided. If it is provided but not needed, it is freed.
5179 static struct bmsafemap *
5180 bmsafemap_lookup(mp, bp, cg, newbmsafemap)
5184 struct bmsafemap *newbmsafemap;
5186 struct bmsafemap_hashhead *bmsafemaphd;
5187 struct bmsafemap *bmsafemap, *collision;
5188 struct worklist *wk;
5189 struct ufsmount *ump;
5193 KASSERT(bp != NULL, ("bmsafemap_lookup: missing buffer"));
5194 LIST_FOREACH(wk, &bp->b_dep, wk_list) {
5195 if (wk->wk_type == D_BMSAFEMAP) {
5197 WORKITEM_FREE(newbmsafemap, D_BMSAFEMAP);
5198 return (WK_BMSAFEMAP(wk));
5201 bmsafemaphd = BMSAFEMAP_HASH(ump, cg);
5202 if (bmsafemap_find(bmsafemaphd, cg, &bmsafemap) == 1) {
5204 WORKITEM_FREE(newbmsafemap, D_BMSAFEMAP);
5208 bmsafemap = newbmsafemap;
5211 bmsafemap = malloc(sizeof(struct bmsafemap),
5212 M_BMSAFEMAP, M_SOFTDEP_FLAGS);
5213 workitem_alloc(&bmsafemap->sm_list, D_BMSAFEMAP, mp);
5216 bmsafemap->sm_buf = bp;
5217 LIST_INIT(&bmsafemap->sm_inodedephd);
5218 LIST_INIT(&bmsafemap->sm_inodedepwr);
5219 LIST_INIT(&bmsafemap->sm_newblkhd);
5220 LIST_INIT(&bmsafemap->sm_newblkwr);
5221 LIST_INIT(&bmsafemap->sm_jaddrefhd);
5222 LIST_INIT(&bmsafemap->sm_jnewblkhd);
5223 LIST_INIT(&bmsafemap->sm_freehd);
5224 LIST_INIT(&bmsafemap->sm_freewr);
5225 if (bmsafemap_find(bmsafemaphd, cg, &collision) == 1) {
5226 WORKITEM_FREE(bmsafemap, D_BMSAFEMAP);
5229 bmsafemap->sm_cg = cg;
5230 LIST_INSERT_HEAD(bmsafemaphd, bmsafemap, sm_hash);
5231 LIST_INSERT_HEAD(&ump->softdep_dirtycg, bmsafemap, sm_next);
5232 WORKLIST_INSERT(&bp->b_dep, &bmsafemap->sm_list);
5237 * Direct block allocation dependencies.
5239 * When a new block is allocated, the corresponding disk locations must be
5240 * initialized (with zeros or new data) before the on-disk inode points to
5241 * them. Also, the freemap from which the block was allocated must be
5242 * updated (on disk) before the inode's pointer. These two dependencies are
5243 * independent of each other and are needed for all file blocks and indirect
5244 * blocks that are pointed to directly by the inode. Just before the
5245 * "in-core" version of the inode is updated with a newly allocated block
5246 * number, a procedure (below) is called to setup allocation dependency
5247 * structures. These structures are removed when the corresponding
5248 * dependencies are satisfied or when the block allocation becomes obsolete
5249 * (i.e., the file is deleted, the block is de-allocated, or the block is a
5250 * fragment that gets upgraded). All of these cases are handled in
5251 * procedures described later.
5253 * When a file extension causes a fragment to be upgraded, either to a larger
5254 * fragment or to a full block, the on-disk location may change (if the
5255 * previous fragment could not simply be extended). In this case, the old
5256 * fragment must be de-allocated, but not until after the inode's pointer has
5257 * been updated. In most cases, this is handled by later procedures, which
5258 * will construct a "freefrag" structure to be added to the workitem queue
5259 * when the inode update is complete (or obsolete). The main exception to
5260 * this is when an allocation occurs while a pending allocation dependency
5261 * (for the same block pointer) remains. This case is handled in the main
5262 * allocation dependency setup procedure by immediately freeing the
5263 * unreferenced fragments.
5266 softdep_setup_allocdirect(ip, off, newblkno, oldblkno, newsize, oldsize, bp)
5267 struct inode *ip; /* inode to which block is being added */
5268 ufs_lbn_t off; /* block pointer within inode */
5269 ufs2_daddr_t newblkno; /* disk block number being added */
5270 ufs2_daddr_t oldblkno; /* previous block number, 0 unless frag */
5271 long newsize; /* size of new block */
5272 long oldsize; /* size of new block */
5273 struct buf *bp; /* bp for allocated block */
5275 struct allocdirect *adp, *oldadp;
5276 struct allocdirectlst *adphead;
5277 struct freefrag *freefrag;
5278 struct inodedep *inodedep;
5279 struct pagedep *pagedep;
5280 struct jnewblk *jnewblk;
5281 struct newblk *newblk;
5287 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
5288 ("softdep_setup_allocdirect called on non-softdep filesystem"));
5289 if (oldblkno && oldblkno != newblkno)
5290 freefrag = newfreefrag(ip, oldblkno, oldsize, lbn);
5295 "softdep_setup_allocdirect: ino %d blkno %jd oldblkno %jd "
5296 "off %jd newsize %ld oldsize %d",
5297 ip->i_number, newblkno, oldblkno, off, newsize, oldsize);
5298 ACQUIRE_LOCK(ITOUMP(ip));
5299 if (off >= NDADDR) {
5301 panic("softdep_setup_allocdirect: bad lbn %jd, off %jd",
5303 /* allocating an indirect block */
5305 panic("softdep_setup_allocdirect: non-zero indir");
5308 panic("softdep_setup_allocdirect: lbn %jd != off %jd",
5311 * Allocating a direct block.
5313 * If we are allocating a directory block, then we must
5314 * allocate an associated pagedep to track additions and
5317 if ((ip->i_mode & IFMT) == IFDIR)
5318 pagedep_lookup(mp, bp, ip->i_number, off, DEPALLOC,
5321 if (newblk_lookup(mp, newblkno, 0, &newblk) == 0)
5322 panic("softdep_setup_allocdirect: lost block");
5323 KASSERT(newblk->nb_list.wk_type == D_NEWBLK,
5324 ("softdep_setup_allocdirect: newblk already initialized"));
5326 * Convert the newblk to an allocdirect.
5328 WORKITEM_REASSIGN(newblk, D_ALLOCDIRECT);
5329 adp = (struct allocdirect *)newblk;
5330 newblk->nb_freefrag = freefrag;
5331 adp->ad_offset = off;
5332 adp->ad_oldblkno = oldblkno;
5333 adp->ad_newsize = newsize;
5334 adp->ad_oldsize = oldsize;
5337 * Finish initializing the journal.
5339 if ((jnewblk = newblk->nb_jnewblk) != NULL) {
5340 jnewblk->jn_ino = ip->i_number;
5341 jnewblk->jn_lbn = lbn;
5342 add_to_journal(&jnewblk->jn_list);
5344 if (freefrag && freefrag->ff_jdep != NULL &&
5345 freefrag->ff_jdep->wk_type == D_JFREEFRAG)
5346 add_to_journal(freefrag->ff_jdep);
5347 inodedep_lookup(mp, ip->i_number, DEPALLOC, &inodedep);
5348 adp->ad_inodedep = inodedep;
5350 WORKLIST_INSERT(&bp->b_dep, &newblk->nb_list);
5352 * The list of allocdirects must be kept in sorted and ascending
5353 * order so that the rollback routines can quickly determine the
5354 * first uncommitted block (the size of the file stored on disk
5355 * ends at the end of the lowest committed fragment, or if there
5356 * are no fragments, at the end of the highest committed block).
5357 * Since files generally grow, the typical case is that the new
5358 * block is to be added at the end of the list. We speed this
5359 * special case by checking against the last allocdirect in the
5360 * list before laboriously traversing the list looking for the
5363 adphead = &inodedep->id_newinoupdt;
5364 oldadp = TAILQ_LAST(adphead, allocdirectlst);
5365 if (oldadp == NULL || oldadp->ad_offset <= off) {
5366 /* insert at end of list */
5367 TAILQ_INSERT_TAIL(adphead, adp, ad_next);
5368 if (oldadp != NULL && oldadp->ad_offset == off)
5369 allocdirect_merge(adphead, adp, oldadp);
5370 FREE_LOCK(ITOUMP(ip));
5373 TAILQ_FOREACH(oldadp, adphead, ad_next) {
5374 if (oldadp->ad_offset >= off)
5378 panic("softdep_setup_allocdirect: lost entry");
5379 /* insert in middle of list */
5380 TAILQ_INSERT_BEFORE(oldadp, adp, ad_next);
5381 if (oldadp->ad_offset == off)
5382 allocdirect_merge(adphead, adp, oldadp);
5384 FREE_LOCK(ITOUMP(ip));
5388 * Merge a newer and older journal record to be stored either in a
5389 * newblock or freefrag. This handles aggregating journal records for
5390 * fragment allocation into a second record as well as replacing a
5391 * journal free with an aborted journal allocation. A segment for the
5392 * oldest record will be placed on wkhd if it has been written. If not
5393 * the segment for the newer record will suffice.
5395 static struct worklist *
5396 jnewblk_merge(new, old, wkhd)
5397 struct worklist *new;
5398 struct worklist *old;
5399 struct workhead *wkhd;
5401 struct jnewblk *njnewblk;
5402 struct jnewblk *jnewblk;
5404 /* Handle NULLs to simplify callers. */
5409 /* Replace a jfreefrag with a jnewblk. */
5410 if (new->wk_type == D_JFREEFRAG) {
5411 if (WK_JNEWBLK(old)->jn_blkno != WK_JFREEFRAG(new)->fr_blkno)
5412 panic("jnewblk_merge: blkno mismatch: %p, %p",
5414 cancel_jfreefrag(WK_JFREEFRAG(new));
5417 if (old->wk_type != D_JNEWBLK || new->wk_type != D_JNEWBLK)
5418 panic("jnewblk_merge: Bad type: old %d new %d\n",
5419 old->wk_type, new->wk_type);
5421 * Handle merging of two jnewblk records that describe
5422 * different sets of fragments in the same block.
5424 jnewblk = WK_JNEWBLK(old);
5425 njnewblk = WK_JNEWBLK(new);
5426 if (jnewblk->jn_blkno != njnewblk->jn_blkno)
5427 panic("jnewblk_merge: Merging disparate blocks.");
5429 * The record may be rolled back in the cg.
5431 if (jnewblk->jn_state & UNDONE) {
5432 jnewblk->jn_state &= ~UNDONE;
5433 njnewblk->jn_state |= UNDONE;
5434 njnewblk->jn_state &= ~ATTACHED;
5437 * We modify the newer addref and free the older so that if neither
5438 * has been written the most up-to-date copy will be on disk. If
5439 * both have been written but rolled back we only temporarily need
5440 * one of them to fix the bits when the cg write completes.
5442 jnewblk->jn_state |= ATTACHED | COMPLETE;
5443 njnewblk->jn_oldfrags = jnewblk->jn_oldfrags;
5444 cancel_jnewblk(jnewblk, wkhd);
5445 WORKLIST_REMOVE(&jnewblk->jn_list);
5446 free_jnewblk(jnewblk);
5451 * Replace an old allocdirect dependency with a newer one.
5452 * This routine must be called with splbio interrupts blocked.
5455 allocdirect_merge(adphead, newadp, oldadp)
5456 struct allocdirectlst *adphead; /* head of list holding allocdirects */
5457 struct allocdirect *newadp; /* allocdirect being added */
5458 struct allocdirect *oldadp; /* existing allocdirect being checked */
5460 struct worklist *wk;
5461 struct freefrag *freefrag;
5464 LOCK_OWNED(VFSTOUFS(newadp->ad_list.wk_mp));
5465 if (newadp->ad_oldblkno != oldadp->ad_newblkno ||
5466 newadp->ad_oldsize != oldadp->ad_newsize ||
5467 newadp->ad_offset >= NDADDR)
5468 panic("%s %jd != new %jd || old size %ld != new %ld",
5469 "allocdirect_merge: old blkno",
5470 (intmax_t)newadp->ad_oldblkno,
5471 (intmax_t)oldadp->ad_newblkno,
5472 newadp->ad_oldsize, oldadp->ad_newsize);
5473 newadp->ad_oldblkno = oldadp->ad_oldblkno;
5474 newadp->ad_oldsize = oldadp->ad_oldsize;
5476 * If the old dependency had a fragment to free or had never
5477 * previously had a block allocated, then the new dependency
5478 * can immediately post its freefrag and adopt the old freefrag.
5479 * This action is done by swapping the freefrag dependencies.
5480 * The new dependency gains the old one's freefrag, and the
5481 * old one gets the new one and then immediately puts it on
5482 * the worklist when it is freed by free_newblk. It is
5483 * not possible to do this swap when the old dependency had a
5484 * non-zero size but no previous fragment to free. This condition
5485 * arises when the new block is an extension of the old block.
5486 * Here, the first part of the fragment allocated to the new
5487 * dependency is part of the block currently claimed on disk by
5488 * the old dependency, so cannot legitimately be freed until the
5489 * conditions for the new dependency are fulfilled.
5491 freefrag = newadp->ad_freefrag;
5492 if (oldadp->ad_freefrag != NULL || oldadp->ad_oldblkno == 0) {
5493 newadp->ad_freefrag = oldadp->ad_freefrag;
5494 oldadp->ad_freefrag = freefrag;
5497 * If we are tracking a new directory-block allocation,
5498 * move it from the old allocdirect to the new allocdirect.
5500 if ((wk = LIST_FIRST(&oldadp->ad_newdirblk)) != NULL) {
5501 WORKLIST_REMOVE(wk);
5502 if (!LIST_EMPTY(&oldadp->ad_newdirblk))
5503 panic("allocdirect_merge: extra newdirblk");
5504 WORKLIST_INSERT(&newadp->ad_newdirblk, wk);
5506 TAILQ_REMOVE(adphead, oldadp, ad_next);
5508 * We need to move any journal dependencies over to the freefrag
5509 * that releases this block if it exists. Otherwise we are
5510 * extending an existing block and we'll wait until that is
5511 * complete to release the journal space and extend the
5512 * new journal to cover this old space as well.
5514 if (freefrag == NULL) {
5515 if (oldadp->ad_newblkno != newadp->ad_newblkno)
5516 panic("allocdirect_merge: %jd != %jd",
5517 oldadp->ad_newblkno, newadp->ad_newblkno);
5518 newadp->ad_block.nb_jnewblk = (struct jnewblk *)
5519 jnewblk_merge(&newadp->ad_block.nb_jnewblk->jn_list,
5520 &oldadp->ad_block.nb_jnewblk->jn_list,
5521 &newadp->ad_block.nb_jwork);
5522 oldadp->ad_block.nb_jnewblk = NULL;
5523 cancel_newblk(&oldadp->ad_block, NULL,
5524 &newadp->ad_block.nb_jwork);
5526 wk = (struct worklist *) cancel_newblk(&oldadp->ad_block,
5527 &freefrag->ff_list, &freefrag->ff_jwork);
5528 freefrag->ff_jdep = jnewblk_merge(freefrag->ff_jdep, wk,
5529 &freefrag->ff_jwork);
5531 free_newblk(&oldadp->ad_block);
5535 * Allocate a jfreefrag structure to journal a single block free.
5537 static struct jfreefrag *
5538 newjfreefrag(freefrag, ip, blkno, size, lbn)
5539 struct freefrag *freefrag;
5545 struct jfreefrag *jfreefrag;
5549 jfreefrag = malloc(sizeof(struct jfreefrag), M_JFREEFRAG,
5551 workitem_alloc(&jfreefrag->fr_list, D_JFREEFRAG, ITOVFS(ip));
5552 jfreefrag->fr_jsegdep = newjsegdep(&jfreefrag->fr_list);
5553 jfreefrag->fr_state = ATTACHED | DEPCOMPLETE;
5554 jfreefrag->fr_ino = ip->i_number;
5555 jfreefrag->fr_lbn = lbn;
5556 jfreefrag->fr_blkno = blkno;
5557 jfreefrag->fr_frags = numfrags(fs, size);
5558 jfreefrag->fr_freefrag = freefrag;
5564 * Allocate a new freefrag structure.
5566 static struct freefrag *
5567 newfreefrag(ip, blkno, size, lbn)
5573 struct freefrag *freefrag;
5574 struct ufsmount *ump;
5577 CTR4(KTR_SUJ, "newfreefrag: ino %d blkno %jd size %ld lbn %jd",
5578 ip->i_number, blkno, size, lbn);
5581 if (fragnum(fs, blkno) + numfrags(fs, size) > fs->fs_frag)
5582 panic("newfreefrag: frag size");
5583 freefrag = malloc(sizeof(struct freefrag),
5584 M_FREEFRAG, M_SOFTDEP_FLAGS);
5585 workitem_alloc(&freefrag->ff_list, D_FREEFRAG, UFSTOVFS(ump));
5586 freefrag->ff_state = ATTACHED;
5587 LIST_INIT(&freefrag->ff_jwork);
5588 freefrag->ff_inum = ip->i_number;
5589 freefrag->ff_vtype = ITOV(ip)->v_type;
5590 freefrag->ff_blkno = blkno;
5591 freefrag->ff_fragsize = size;
5593 if (MOUNTEDSUJ(UFSTOVFS(ump))) {
5594 freefrag->ff_jdep = (struct worklist *)
5595 newjfreefrag(freefrag, ip, blkno, size, lbn);
5597 freefrag->ff_state |= DEPCOMPLETE;
5598 freefrag->ff_jdep = NULL;
5605 * This workitem de-allocates fragments that were replaced during
5606 * file block allocation.
5609 handle_workitem_freefrag(freefrag)
5610 struct freefrag *freefrag;
5612 struct ufsmount *ump = VFSTOUFS(freefrag->ff_list.wk_mp);
5613 struct workhead wkhd;
5616 "handle_workitem_freefrag: ino %d blkno %jd size %ld",
5617 freefrag->ff_inum, freefrag->ff_blkno, freefrag->ff_fragsize);
5619 * It would be illegal to add new completion items to the
5620 * freefrag after it was schedule to be done so it must be
5621 * safe to modify the list head here.
5625 LIST_SWAP(&freefrag->ff_jwork, &wkhd, worklist, wk_list);
5627 * If the journal has not been written we must cancel it here.
5629 if (freefrag->ff_jdep) {
5630 if (freefrag->ff_jdep->wk_type != D_JNEWBLK)
5631 panic("handle_workitem_freefrag: Unexpected type %d\n",
5632 freefrag->ff_jdep->wk_type);
5633 cancel_jnewblk(WK_JNEWBLK(freefrag->ff_jdep), &wkhd);
5636 ffs_blkfree(ump, ump->um_fs, ump->um_devvp, freefrag->ff_blkno,
5637 freefrag->ff_fragsize, freefrag->ff_inum, freefrag->ff_vtype, &wkhd);
5639 WORKITEM_FREE(freefrag, D_FREEFRAG);
5644 * Set up a dependency structure for an external attributes data block.
5645 * This routine follows much of the structure of softdep_setup_allocdirect.
5646 * See the description of softdep_setup_allocdirect above for details.
5649 softdep_setup_allocext(ip, off, newblkno, oldblkno, newsize, oldsize, bp)
5652 ufs2_daddr_t newblkno;
5653 ufs2_daddr_t oldblkno;
5658 struct allocdirect *adp, *oldadp;
5659 struct allocdirectlst *adphead;
5660 struct freefrag *freefrag;
5661 struct inodedep *inodedep;
5662 struct jnewblk *jnewblk;
5663 struct newblk *newblk;
5665 struct ufsmount *ump;
5670 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
5671 ("softdep_setup_allocext called on non-softdep filesystem"));
5672 KASSERT(off < NXADDR, ("softdep_setup_allocext: lbn %lld > NXADDR",
5676 if (oldblkno && oldblkno != newblkno)
5677 freefrag = newfreefrag(ip, oldblkno, oldsize, lbn);
5682 if (newblk_lookup(mp, newblkno, 0, &newblk) == 0)
5683 panic("softdep_setup_allocext: lost block");
5684 KASSERT(newblk->nb_list.wk_type == D_NEWBLK,
5685 ("softdep_setup_allocext: newblk already initialized"));
5687 * Convert the newblk to an allocdirect.
5689 WORKITEM_REASSIGN(newblk, D_ALLOCDIRECT);
5690 adp = (struct allocdirect *)newblk;
5691 newblk->nb_freefrag = freefrag;
5692 adp->ad_offset = off;
5693 adp->ad_oldblkno = oldblkno;
5694 adp->ad_newsize = newsize;
5695 adp->ad_oldsize = oldsize;
5696 adp->ad_state |= EXTDATA;
5699 * Finish initializing the journal.
5701 if ((jnewblk = newblk->nb_jnewblk) != NULL) {
5702 jnewblk->jn_ino = ip->i_number;
5703 jnewblk->jn_lbn = lbn;
5704 add_to_journal(&jnewblk->jn_list);
5706 if (freefrag && freefrag->ff_jdep != NULL &&
5707 freefrag->ff_jdep->wk_type == D_JFREEFRAG)
5708 add_to_journal(freefrag->ff_jdep);
5709 inodedep_lookup(mp, ip->i_number, DEPALLOC, &inodedep);
5710 adp->ad_inodedep = inodedep;
5712 WORKLIST_INSERT(&bp->b_dep, &newblk->nb_list);
5714 * The list of allocdirects must be kept in sorted and ascending
5715 * order so that the rollback routines can quickly determine the
5716 * first uncommitted block (the size of the file stored on disk
5717 * ends at the end of the lowest committed fragment, or if there
5718 * are no fragments, at the end of the highest committed block).
5719 * Since files generally grow, the typical case is that the new
5720 * block is to be added at the end of the list. We speed this
5721 * special case by checking against the last allocdirect in the
5722 * list before laboriously traversing the list looking for the
5725 adphead = &inodedep->id_newextupdt;
5726 oldadp = TAILQ_LAST(adphead, allocdirectlst);
5727 if (oldadp == NULL || oldadp->ad_offset <= off) {
5728 /* insert at end of list */
5729 TAILQ_INSERT_TAIL(adphead, adp, ad_next);
5730 if (oldadp != NULL && oldadp->ad_offset == off)
5731 allocdirect_merge(adphead, adp, oldadp);
5735 TAILQ_FOREACH(oldadp, adphead, ad_next) {
5736 if (oldadp->ad_offset >= off)
5740 panic("softdep_setup_allocext: lost entry");
5741 /* insert in middle of list */
5742 TAILQ_INSERT_BEFORE(oldadp, adp, ad_next);
5743 if (oldadp->ad_offset == off)
5744 allocdirect_merge(adphead, adp, oldadp);
5749 * Indirect block allocation dependencies.
5751 * The same dependencies that exist for a direct block also exist when
5752 * a new block is allocated and pointed to by an entry in a block of
5753 * indirect pointers. The undo/redo states described above are also
5754 * used here. Because an indirect block contains many pointers that
5755 * may have dependencies, a second copy of the entire in-memory indirect
5756 * block is kept. The buffer cache copy is always completely up-to-date.
5757 * The second copy, which is used only as a source for disk writes,
5758 * contains only the safe pointers (i.e., those that have no remaining
5759 * update dependencies). The second copy is freed when all pointers
5760 * are safe. The cache is not allowed to replace indirect blocks with
5761 * pending update dependencies. If a buffer containing an indirect
5762 * block with dependencies is written, these routines will mark it
5763 * dirty again. It can only be successfully written once all the
5764 * dependencies are removed. The ffs_fsync routine in conjunction with
5765 * softdep_sync_metadata work together to get all the dependencies
5766 * removed so that a file can be successfully written to disk. Three
5767 * procedures are used when setting up indirect block pointer
5768 * dependencies. The division is necessary because of the organization
5769 * of the "balloc" routine and because of the distinction between file
5770 * pages and file metadata blocks.
5774 * Allocate a new allocindir structure.
5776 static struct allocindir *
5777 newallocindir(ip, ptrno, newblkno, oldblkno, lbn)
5778 struct inode *ip; /* inode for file being extended */
5779 int ptrno; /* offset of pointer in indirect block */
5780 ufs2_daddr_t newblkno; /* disk block number being added */
5781 ufs2_daddr_t oldblkno; /* previous block number, 0 if none */
5784 struct newblk *newblk;
5785 struct allocindir *aip;
5786 struct freefrag *freefrag;
5787 struct jnewblk *jnewblk;
5790 freefrag = newfreefrag(ip, oldblkno, ITOFS(ip)->fs_bsize, lbn);
5793 ACQUIRE_LOCK(ITOUMP(ip));
5794 if (newblk_lookup(ITOVFS(ip), newblkno, 0, &newblk) == 0)
5795 panic("new_allocindir: lost block");
5796 KASSERT(newblk->nb_list.wk_type == D_NEWBLK,
5797 ("newallocindir: newblk already initialized"));
5798 WORKITEM_REASSIGN(newblk, D_ALLOCINDIR);
5799 newblk->nb_freefrag = freefrag;
5800 aip = (struct allocindir *)newblk;
5801 aip->ai_offset = ptrno;
5802 aip->ai_oldblkno = oldblkno;
5804 if ((jnewblk = newblk->nb_jnewblk) != NULL) {
5805 jnewblk->jn_ino = ip->i_number;
5806 jnewblk->jn_lbn = lbn;
5807 add_to_journal(&jnewblk->jn_list);
5809 if (freefrag && freefrag->ff_jdep != NULL &&
5810 freefrag->ff_jdep->wk_type == D_JFREEFRAG)
5811 add_to_journal(freefrag->ff_jdep);
5816 * Called just before setting an indirect block pointer
5817 * to a newly allocated file page.
5820 softdep_setup_allocindir_page(ip, lbn, bp, ptrno, newblkno, oldblkno, nbp)
5821 struct inode *ip; /* inode for file being extended */
5822 ufs_lbn_t lbn; /* allocated block number within file */
5823 struct buf *bp; /* buffer with indirect blk referencing page */
5824 int ptrno; /* offset of pointer in indirect block */
5825 ufs2_daddr_t newblkno; /* disk block number being added */
5826 ufs2_daddr_t oldblkno; /* previous block number, 0 if none */
5827 struct buf *nbp; /* buffer holding allocated page */
5829 struct inodedep *inodedep;
5830 struct freefrag *freefrag;
5831 struct allocindir *aip;
5832 struct pagedep *pagedep;
5834 struct ufsmount *ump;
5838 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
5839 ("softdep_setup_allocindir_page called on non-softdep filesystem"));
5840 KASSERT(lbn == nbp->b_lblkno,
5841 ("softdep_setup_allocindir_page: lbn %jd != lblkno %jd",
5842 lbn, bp->b_lblkno));
5844 "softdep_setup_allocindir_page: ino %d blkno %jd oldblkno %jd "
5845 "lbn %jd", ip->i_number, newblkno, oldblkno, lbn);
5846 ASSERT_VOP_LOCKED(ITOV(ip), "softdep_setup_allocindir_page");
5847 aip = newallocindir(ip, ptrno, newblkno, oldblkno, lbn);
5848 (void) inodedep_lookup(mp, ip->i_number, DEPALLOC, &inodedep);
5850 * If we are allocating a directory page, then we must
5851 * allocate an associated pagedep to track additions and
5854 if ((ip->i_mode & IFMT) == IFDIR)
5855 pagedep_lookup(mp, nbp, ip->i_number, lbn, DEPALLOC, &pagedep);
5856 WORKLIST_INSERT(&nbp->b_dep, &aip->ai_block.nb_list);
5857 freefrag = setup_allocindir_phase2(bp, ip, inodedep, aip, lbn);
5860 handle_workitem_freefrag(freefrag);
5864 * Called just before setting an indirect block pointer to a
5865 * newly allocated indirect block.
5868 softdep_setup_allocindir_meta(nbp, ip, bp, ptrno, newblkno)
5869 struct buf *nbp; /* newly allocated indirect block */
5870 struct inode *ip; /* inode for file being extended */
5871 struct buf *bp; /* indirect block referencing allocated block */
5872 int ptrno; /* offset of pointer in indirect block */
5873 ufs2_daddr_t newblkno; /* disk block number being added */
5875 struct inodedep *inodedep;
5876 struct allocindir *aip;
5877 struct ufsmount *ump;
5881 KASSERT(MOUNTEDSOFTDEP(UFSTOVFS(ump)) != 0,
5882 ("softdep_setup_allocindir_meta called on non-softdep filesystem"));
5884 "softdep_setup_allocindir_meta: ino %d blkno %jd ptrno %d",
5885 ip->i_number, newblkno, ptrno);
5886 lbn = nbp->b_lblkno;
5887 ASSERT_VOP_LOCKED(ITOV(ip), "softdep_setup_allocindir_meta");
5888 aip = newallocindir(ip, ptrno, newblkno, 0, lbn);
5889 inodedep_lookup(UFSTOVFS(ump), ip->i_number, DEPALLOC, &inodedep);
5890 WORKLIST_INSERT(&nbp->b_dep, &aip->ai_block.nb_list);
5891 if (setup_allocindir_phase2(bp, ip, inodedep, aip, lbn))
5892 panic("softdep_setup_allocindir_meta: Block already existed");
5897 indirdep_complete(indirdep)
5898 struct indirdep *indirdep;
5900 struct allocindir *aip;
5902 LIST_REMOVE(indirdep, ir_next);
5903 indirdep->ir_state |= DEPCOMPLETE;
5905 while ((aip = LIST_FIRST(&indirdep->ir_completehd)) != NULL) {
5906 LIST_REMOVE(aip, ai_next);
5907 free_newblk(&aip->ai_block);
5910 * If this indirdep is not attached to a buf it was simply waiting
5911 * on completion to clear completehd. free_indirdep() asserts
5912 * that nothing is dangling.
5914 if ((indirdep->ir_state & ONWORKLIST) == 0)
5915 free_indirdep(indirdep);
5918 static struct indirdep *
5919 indirdep_lookup(mp, ip, bp)
5924 struct indirdep *indirdep, *newindirdep;
5925 struct newblk *newblk;
5926 struct ufsmount *ump;
5927 struct worklist *wk;
5937 LIST_FOREACH(wk, &bp->b_dep, wk_list) {
5938 if (wk->wk_type != D_INDIRDEP)
5940 indirdep = WK_INDIRDEP(wk);
5943 /* Found on the buffer worklist, no new structure to free. */
5944 if (indirdep != NULL && newindirdep == NULL)
5946 if (indirdep != NULL && newindirdep != NULL)
5947 panic("indirdep_lookup: simultaneous create");
5948 /* None found on the buffer and a new structure is ready. */
5949 if (indirdep == NULL && newindirdep != NULL)
5951 /* None found and no new structure available. */
5953 newindirdep = malloc(sizeof(struct indirdep),
5954 M_INDIRDEP, M_SOFTDEP_FLAGS);
5955 workitem_alloc(&newindirdep->ir_list, D_INDIRDEP, mp);
5956 newindirdep->ir_state = ATTACHED;
5958 newindirdep->ir_state |= UFS1FMT;
5959 TAILQ_INIT(&newindirdep->ir_trunc);
5960 newindirdep->ir_saveddata = NULL;
5961 LIST_INIT(&newindirdep->ir_deplisthd);
5962 LIST_INIT(&newindirdep->ir_donehd);
5963 LIST_INIT(&newindirdep->ir_writehd);
5964 LIST_INIT(&newindirdep->ir_completehd);
5965 if (bp->b_blkno == bp->b_lblkno) {
5966 ufs_bmaparray(bp->b_vp, bp->b_lblkno, &blkno, bp,
5968 bp->b_blkno = blkno;
5970 newindirdep->ir_freeblks = NULL;
5971 newindirdep->ir_savebp =
5972 getblk(ump->um_devvp, bp->b_blkno, bp->b_bcount, 0, 0, 0);
5973 newindirdep->ir_bp = bp;
5974 BUF_KERNPROC(newindirdep->ir_savebp);
5975 bcopy(bp->b_data, newindirdep->ir_savebp->b_data, bp->b_bcount);
5978 indirdep = newindirdep;
5979 WORKLIST_INSERT(&bp->b_dep, &indirdep->ir_list);
5981 * If the block is not yet allocated we don't set DEPCOMPLETE so
5982 * that we don't free dependencies until the pointers are valid.
5983 * This could search b_dep for D_ALLOCDIRECT/D_ALLOCINDIR rather
5984 * than using the hash.
5986 if (newblk_lookup(mp, dbtofsb(fs, bp->b_blkno), 0, &newblk))
5987 LIST_INSERT_HEAD(&newblk->nb_indirdeps, indirdep, ir_next);
5989 indirdep->ir_state |= DEPCOMPLETE;
5994 * Called to finish the allocation of the "aip" allocated
5995 * by one of the two routines above.
5997 static struct freefrag *
5998 setup_allocindir_phase2(bp, ip, inodedep, aip, lbn)
5999 struct buf *bp; /* in-memory copy of the indirect block */
6000 struct inode *ip; /* inode for file being extended */
6001 struct inodedep *inodedep; /* Inodedep for ip */
6002 struct allocindir *aip; /* allocindir allocated by the above routines */
6003 ufs_lbn_t lbn; /* Logical block number for this block. */
6006 struct indirdep *indirdep;
6007 struct allocindir *oldaip;
6008 struct freefrag *freefrag;
6010 struct ufsmount *ump;
6016 if (bp->b_lblkno >= 0)
6017 panic("setup_allocindir_phase2: not indir blk");
6018 KASSERT(aip->ai_offset >= 0 && aip->ai_offset < NINDIR(fs),
6019 ("setup_allocindir_phase2: Bad offset %d", aip->ai_offset));
6020 indirdep = indirdep_lookup(mp, ip, bp);
6021 KASSERT(indirdep->ir_savebp != NULL,
6022 ("setup_allocindir_phase2 NULL ir_savebp"));
6023 aip->ai_indirdep = indirdep;
6025 * Check for an unwritten dependency for this indirect offset. If
6026 * there is, merge the old dependency into the new one. This happens
6027 * as a result of reallocblk only.
6030 if (aip->ai_oldblkno != 0) {
6031 LIST_FOREACH(oldaip, &indirdep->ir_deplisthd, ai_next) {
6032 if (oldaip->ai_offset == aip->ai_offset) {
6033 freefrag = allocindir_merge(aip, oldaip);
6037 LIST_FOREACH(oldaip, &indirdep->ir_donehd, ai_next) {
6038 if (oldaip->ai_offset == aip->ai_offset) {
6039 freefrag = allocindir_merge(aip, oldaip);
6045 LIST_INSERT_HEAD(&indirdep->ir_deplisthd, aip, ai_next);
6050 * Merge two allocindirs which refer to the same block. Move newblock
6051 * dependencies and setup the freefrags appropriately.
6053 static struct freefrag *
6054 allocindir_merge(aip, oldaip)
6055 struct allocindir *aip;
6056 struct allocindir *oldaip;
6058 struct freefrag *freefrag;
6059 struct worklist *wk;
6061 if (oldaip->ai_newblkno != aip->ai_oldblkno)
6062 panic("allocindir_merge: blkno");
6063 aip->ai_oldblkno = oldaip->ai_oldblkno;
6064 freefrag = aip->ai_freefrag;
6065 aip->ai_freefrag = oldaip->ai_freefrag;
6066 oldaip->ai_freefrag = NULL;
6067 KASSERT(freefrag != NULL, ("setup_allocindir_phase2: No freefrag"));
6069 * If we are tracking a new directory-block allocation,
6070 * move it from the old allocindir to the new allocindir.
6072 if ((wk = LIST_FIRST(&oldaip->ai_newdirblk)) != NULL) {
6073 WORKLIST_REMOVE(wk);
6074 if (!LIST_EMPTY(&oldaip->ai_newdirblk))
6075 panic("allocindir_merge: extra newdirblk");
6076 WORKLIST_INSERT(&aip->ai_newdirblk, wk);
6079 * We can skip journaling for this freefrag and just complete
6080 * any pending journal work for the allocindir that is being
6081 * removed after the freefrag completes.
6083 if (freefrag->ff_jdep)
6084 cancel_jfreefrag(WK_JFREEFRAG(freefrag->ff_jdep));
6085 LIST_REMOVE(oldaip, ai_next);
6086 freefrag->ff_jdep = (struct worklist *)cancel_newblk(&oldaip->ai_block,
6087 &freefrag->ff_list, &freefrag->ff_jwork);
6088 free_newblk(&oldaip->ai_block);
6094 setup_freedirect(freeblks, ip, i, needj)
6095 struct freeblks *freeblks;
6100 struct ufsmount *ump;
6104 blkno = DIP(ip, i_db[i]);
6107 DIP_SET(ip, i_db[i], 0);
6109 frags = sblksize(ump->um_fs, ip->i_size, i);
6110 frags = numfrags(ump->um_fs, frags);
6111 newfreework(ump, freeblks, NULL, i, blkno, frags, 0, needj);
6115 setup_freeext(freeblks, ip, i, needj)
6116 struct freeblks *freeblks;
6121 struct ufsmount *ump;
6125 blkno = ip->i_din2->di_extb[i];
6128 ip->i_din2->di_extb[i] = 0;
6130 frags = sblksize(ump->um_fs, ip->i_din2->di_extsize, i);
6131 frags = numfrags(ump->um_fs, frags);
6132 newfreework(ump, freeblks, NULL, -1 - i, blkno, frags, 0, needj);
6136 setup_freeindir(freeblks, ip, i, lbn, needj)
6137 struct freeblks *freeblks;
6143 struct ufsmount *ump;
6146 blkno = DIP(ip, i_ib[i]);
6149 DIP_SET(ip, i_ib[i], 0);
6151 newfreework(ump, freeblks, NULL, lbn, blkno, ump->um_fs->fs_frag,
6155 static inline struct freeblks *
6160 struct freeblks *freeblks;
6162 freeblks = malloc(sizeof(struct freeblks),
6163 M_FREEBLKS, M_SOFTDEP_FLAGS|M_ZERO);
6164 workitem_alloc(&freeblks->fb_list, D_FREEBLKS, mp);
6165 LIST_INIT(&freeblks->fb_jblkdephd);
6166 LIST_INIT(&freeblks->fb_jwork);
6167 freeblks->fb_ref = 0;
6168 freeblks->fb_cgwait = 0;
6169 freeblks->fb_state = ATTACHED;
6170 freeblks->fb_uid = ip->i_uid;
6171 freeblks->fb_inum = ip->i_number;
6172 freeblks->fb_vtype = ITOV(ip)->v_type;
6173 freeblks->fb_modrev = DIP(ip, i_modrev);
6174 freeblks->fb_devvp = ITODEVVP(ip);
6175 freeblks->fb_chkcnt = 0;
6176 freeblks->fb_len = 0;
6182 trunc_indirdep(indirdep, freeblks, bp, off)
6183 struct indirdep *indirdep;
6184 struct freeblks *freeblks;
6188 struct allocindir *aip, *aipn;
6191 * The first set of allocindirs won't be in savedbp.
6193 LIST_FOREACH_SAFE(aip, &indirdep->ir_deplisthd, ai_next, aipn)
6194 if (aip->ai_offset > off)
6195 cancel_allocindir(aip, bp, freeblks, 1);
6196 LIST_FOREACH_SAFE(aip, &indirdep->ir_donehd, ai_next, aipn)
6197 if (aip->ai_offset > off)
6198 cancel_allocindir(aip, bp, freeblks, 1);
6200 * These will exist in savedbp.
6202 LIST_FOREACH_SAFE(aip, &indirdep->ir_writehd, ai_next, aipn)
6203 if (aip->ai_offset > off)
6204 cancel_allocindir(aip, NULL, freeblks, 0);
6205 LIST_FOREACH_SAFE(aip, &indirdep->ir_completehd, ai_next, aipn)
6206 if (aip->ai_offset > off)
6207 cancel_allocindir(aip, NULL, freeblks, 0);
6211 * Follow the chain of indirects down to lastlbn creating a freework
6212 * structure for each. This will be used to start indir_trunc() at
6213 * the right offset and create the journal records for the parrtial
6214 * truncation. A second step will handle the truncated dependencies.
6217 setup_trunc_indir(freeblks, ip, lbn, lastlbn, blkno)
6218 struct freeblks *freeblks;
6224 struct indirdep *indirdep;
6225 struct indirdep *indirn;
6226 struct freework *freework;
6227 struct newblk *newblk;
6229 struct ufsmount *ump;
6242 mp = freeblks->fb_list.wk_mp;
6244 bp = getblk(ITOV(ip), lbn, mp->mnt_stat.f_iosize, 0, 0, 0);
6245 if ((bp->b_flags & B_CACHE) == 0) {
6246 bp->b_blkno = blkptrtodb(VFSTOUFS(mp), blkno);
6247 bp->b_iocmd = BIO_READ;
6248 bp->b_flags &= ~B_INVAL;
6249 bp->b_ioflags &= ~BIO_ERROR;
6250 vfs_busy_pages(bp, 0);
6251 bp->b_iooffset = dbtob(bp->b_blkno);
6256 racct_add_buf(curproc, bp, 0);
6257 PROC_UNLOCK(curproc);
6260 curthread->td_ru.ru_inblock++;
6261 error = bufwait(bp);
6267 level = lbn_level(lbn);
6268 lbnadd = lbn_offset(ump->um_fs, level);
6270 * Compute the offset of the last block we want to keep. Store
6271 * in the freework the first block we want to completely free.
6273 off = (lastlbn - -(lbn + level)) / lbnadd;
6274 if (off + 1 == NINDIR(ump->um_fs))
6276 freework = newfreework(ump, freeblks, NULL, lbn, blkno, 0, off + 1, 0);
6278 * Link the freework into the indirdep. This will prevent any new
6279 * allocations from proceeding until we are finished with the
6280 * truncate and the block is written.
6283 indirdep = indirdep_lookup(mp, ip, bp);
6284 if (indirdep->ir_freeblks)
6285 panic("setup_trunc_indir: indirdep already truncated.");
6286 TAILQ_INSERT_TAIL(&indirdep->ir_trunc, freework, fw_next);
6287 freework->fw_indir = indirdep;
6289 * Cancel any allocindirs that will not make it to disk.
6290 * We have to do this for all copies of the indirdep that
6291 * live on this newblk.
6293 if ((indirdep->ir_state & DEPCOMPLETE) == 0) {
6294 newblk_lookup(mp, dbtofsb(ump->um_fs, bp->b_blkno), 0, &newblk);
6295 LIST_FOREACH(indirn, &newblk->nb_indirdeps, ir_next)
6296 trunc_indirdep(indirn, freeblks, bp, off);
6298 trunc_indirdep(indirdep, freeblks, bp, off);
6301 * Creation is protected by the buf lock. The saveddata is only
6302 * needed if a full truncation follows a partial truncation but it
6303 * is difficult to allocate in that case so we fetch it anyway.
6305 if (indirdep->ir_saveddata == NULL)
6306 indirdep->ir_saveddata = malloc(bp->b_bcount, M_INDIRDEP,
6309 /* Fetch the blkno of the child and the zero start offset. */
6310 if (I_IS_UFS1(ip)) {
6311 blkno = ((ufs1_daddr_t *)bp->b_data)[off];
6312 start = (uint8_t *)&((ufs1_daddr_t *)bp->b_data)[off+1];
6314 blkno = ((ufs2_daddr_t *)bp->b_data)[off];
6315 start = (uint8_t *)&((ufs2_daddr_t *)bp->b_data)[off+1];
6318 /* Zero the truncated pointers. */
6319 end = bp->b_data + bp->b_bcount;
6320 bzero(start, end - start);
6326 lbn++; /* adjust level */
6327 lbn -= (off * lbnadd);
6328 return setup_trunc_indir(freeblks, ip, lbn, lastlbn, blkno);
6332 * Complete the partial truncation of an indirect block setup by
6333 * setup_trunc_indir(). This zeros the truncated pointers in the saved
6334 * copy and writes them to disk before the freeblks is allowed to complete.
6337 complete_trunc_indir(freework)
6338 struct freework *freework;
6340 struct freework *fwn;
6341 struct indirdep *indirdep;
6342 struct ufsmount *ump;
6347 ump = VFSTOUFS(freework->fw_list.wk_mp);
6349 indirdep = freework->fw_indir;
6351 bp = indirdep->ir_bp;
6352 /* See if the block was discarded. */
6355 /* Inline part of getdirtybuf(). We dont want bremfree. */
6356 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL) == 0)
6358 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | LK_INTERLOCK,
6359 LOCK_PTR(ump)) == 0)
6363 freework->fw_state |= DEPCOMPLETE;
6364 TAILQ_REMOVE(&indirdep->ir_trunc, freework, fw_next);
6366 * Zero the pointers in the saved copy.
6368 if (indirdep->ir_state & UFS1FMT)
6369 start = sizeof(ufs1_daddr_t);
6371 start = sizeof(ufs2_daddr_t);
6372 start *= freework->fw_start;
6373 count = indirdep->ir_savebp->b_bcount - start;
6374 start += (uintptr_t)indirdep->ir_savebp->b_data;
6375 bzero((char *)start, count);
6377 * We need to start the next truncation in the list if it has not
6380 fwn = TAILQ_FIRST(&indirdep->ir_trunc);
6382 if (fwn->fw_freeblks == indirdep->ir_freeblks)
6383 TAILQ_REMOVE(&indirdep->ir_trunc, fwn, fw_next);
6384 if ((fwn->fw_state & ONWORKLIST) == 0)
6385 freework_enqueue(fwn);
6388 * If bp is NULL the block was fully truncated, restore
6389 * the saved block list otherwise free it if it is no
6392 if (TAILQ_EMPTY(&indirdep->ir_trunc)) {
6394 bcopy(indirdep->ir_saveddata,
6395 indirdep->ir_savebp->b_data,
6396 indirdep->ir_savebp->b_bcount);
6397 free(indirdep->ir_saveddata, M_INDIRDEP);
6398 indirdep->ir_saveddata = NULL;
6401 * When bp is NULL there is a full truncation pending. We
6402 * must wait for this full truncation to be journaled before
6403 * we can release this freework because the disk pointers will
6404 * never be written as zero.
6407 if (LIST_EMPTY(&indirdep->ir_freeblks->fb_jblkdephd))
6408 handle_written_freework(freework);
6410 WORKLIST_INSERT(&indirdep->ir_freeblks->fb_freeworkhd,
6411 &freework->fw_list);
6413 /* Complete when the real copy is written. */
6414 WORKLIST_INSERT(&bp->b_dep, &freework->fw_list);
6420 * Calculate the number of blocks we are going to release where datablocks
6421 * is the current total and length is the new file size.
6424 blkcount(fs, datablocks, length)
6426 ufs2_daddr_t datablocks;
6429 off_t totblks, numblks;
6432 numblks = howmany(length, fs->fs_bsize);
6433 if (numblks <= NDADDR) {
6434 totblks = howmany(length, fs->fs_fsize);
6437 totblks = blkstofrags(fs, numblks);
6440 * Count all single, then double, then triple indirects required.
6441 * Subtracting one indirects worth of blocks for each pass
6442 * acknowledges one of each pointed to by the inode.
6445 totblks += blkstofrags(fs, howmany(numblks, NINDIR(fs)));
6446 numblks -= NINDIR(fs);
6449 numblks = howmany(numblks, NINDIR(fs));
6452 totblks = fsbtodb(fs, totblks);
6454 * Handle sparse files. We can't reclaim more blocks than the inode
6455 * references. We will correct it later in handle_complete_freeblks()
6456 * when we know the real count.
6458 if (totblks > datablocks)
6460 return (datablocks - totblks);
6464 * Handle freeblocks for journaled softupdate filesystems.
6466 * Contrary to normal softupdates, we must preserve the block pointers in
6467 * indirects until their subordinates are free. This is to avoid journaling
6468 * every block that is freed which may consume more space than the journal
6469 * itself. The recovery program will see the free block journals at the
6470 * base of the truncated area and traverse them to reclaim space. The
6471 * pointers in the inode may be cleared immediately after the journal
6472 * records are written because each direct and indirect pointer in the
6473 * inode is recorded in a journal. This permits full truncation to proceed
6474 * asynchronously. The write order is journal -> inode -> cgs -> indirects.
6476 * The algorithm is as follows:
6477 * 1) Traverse the in-memory state and create journal entries to release
6478 * the relevant blocks and full indirect trees.
6479 * 2) Traverse the indirect block chain adding partial truncation freework
6480 * records to indirects in the path to lastlbn. The freework will
6481 * prevent new allocation dependencies from being satisfied in this
6482 * indirect until the truncation completes.
6483 * 3) Read and lock the inode block, performing an update with the new size
6484 * and pointers. This prevents truncated data from becoming valid on
6485 * disk through step 4.
6486 * 4) Reap unsatisfied dependencies that are beyond the truncated area,
6487 * eliminate journal work for those records that do not require it.
6488 * 5) Schedule the journal records to be written followed by the inode block.
6489 * 6) Allocate any necessary frags for the end of file.
6490 * 7) Zero any partially truncated blocks.
6492 * From this truncation proceeds asynchronously using the freework and
6493 * indir_trunc machinery. The file will not be extended again into a
6494 * partially truncated indirect block until all work is completed but
6495 * the normal dependency mechanism ensures that it is rolled back/forward
6496 * as appropriate. Further truncation may occur without delay and is
6497 * serialized in indir_trunc().
6500 softdep_journal_freeblocks(ip, cred, length, flags)
6501 struct inode *ip; /* The inode whose length is to be reduced */
6503 off_t length; /* The new length for the file */
6504 int flags; /* IO_EXT and/or IO_NORMAL */
6506 struct freeblks *freeblks, *fbn;
6507 struct worklist *wk, *wkn;
6508 struct inodedep *inodedep;
6509 struct jblkdep *jblkdep;
6510 struct allocdirect *adp, *adpn;
6511 struct ufsmount *ump;
6516 ufs2_daddr_t extblocks, datablocks;
6517 ufs_lbn_t tmpval, lbn, lastlbn;
6518 int frags, lastoff, iboff, allocblock, needj, error, i;
6523 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
6524 ("softdep_journal_freeblocks called on non-softdep filesystem"));
6532 freeblks = newfreeblks(mp, ip);
6535 * If we're truncating a removed file that will never be written
6536 * we don't need to journal the block frees. The canceled journals
6537 * for the allocations will suffice.
6539 inodedep_lookup(mp, ip->i_number, DEPALLOC, &inodedep);
6540 if ((inodedep->id_state & (UNLINKED | DEPCOMPLETE)) == UNLINKED &&
6543 CTR3(KTR_SUJ, "softdep_journal_freeblks: ip %d length %ld needj %d",
6544 ip->i_number, length, needj);
6547 * Calculate the lbn that we are truncating to. This results in -1
6548 * if we're truncating the 0 bytes. So it is the last lbn we want
6549 * to keep, not the first lbn we want to truncate.
6551 lastlbn = lblkno(fs, length + fs->fs_bsize - 1) - 1;
6552 lastoff = blkoff(fs, length);
6554 * Compute frags we are keeping in lastlbn. 0 means all.
6556 if (lastlbn >= 0 && lastlbn < NDADDR) {
6557 frags = fragroundup(fs, lastoff);
6558 /* adp offset of last valid allocdirect. */
6560 } else if (lastlbn > 0)
6562 if (fs->fs_magic == FS_UFS2_MAGIC)
6563 extblocks = btodb(fragroundup(fs, ip->i_din2->di_extsize));
6565 * Handle normal data blocks and indirects. This section saves
6566 * values used after the inode update to complete frag and indirect
6569 if ((flags & IO_NORMAL) != 0) {
6571 * Handle truncation of whole direct and indirect blocks.
6573 for (i = iboff + 1; i < NDADDR; i++)
6574 setup_freedirect(freeblks, ip, i, needj);
6575 for (i = 0, tmpval = NINDIR(fs), lbn = NDADDR; i < NIADDR;
6576 i++, lbn += tmpval, tmpval *= NINDIR(fs)) {
6577 /* Release a whole indirect tree. */
6578 if (lbn > lastlbn) {
6579 setup_freeindir(freeblks, ip, i, -lbn -i,
6585 * Traverse partially truncated indirect tree.
6587 if (lbn <= lastlbn && lbn + tmpval - 1 > lastlbn)
6588 setup_trunc_indir(freeblks, ip, -lbn - i,
6589 lastlbn, DIP(ip, i_ib[i]));
6592 * Handle partial truncation to a frag boundary.
6598 oldfrags = blksize(fs, ip, lastlbn);
6599 blkno = DIP(ip, i_db[lastlbn]);
6600 if (blkno && oldfrags != frags) {
6602 oldfrags = numfrags(fs, oldfrags);
6603 blkno += numfrags(fs, frags);
6604 newfreework(ump, freeblks, NULL, lastlbn,
6605 blkno, oldfrags, 0, needj);
6607 adjust_newfreework(freeblks,
6608 numfrags(fs, frags));
6609 } else if (blkno == 0)
6613 * Add a journal record for partial truncate if we are
6614 * handling indirect blocks. Non-indirects need no extra
6617 if (length != 0 && lastlbn >= NDADDR) {
6618 ip->i_flag |= IN_TRUNCATED;
6619 newjtrunc(freeblks, length, 0);
6621 ip->i_size = length;
6622 DIP_SET(ip, i_size, ip->i_size);
6623 datablocks = DIP(ip, i_blocks) - extblocks;
6625 datablocks = blkcount(fs, datablocks, length);
6626 freeblks->fb_len = length;
6628 if ((flags & IO_EXT) != 0) {
6629 for (i = 0; i < NXADDR; i++)
6630 setup_freeext(freeblks, ip, i, needj);
6631 ip->i_din2->di_extsize = 0;
6632 datablocks += extblocks;
6635 /* Reference the quotas in case the block count is wrong in the end. */
6636 quotaref(vp, freeblks->fb_quota);
6637 (void) chkdq(ip, -datablocks, NOCRED, 0);
6639 freeblks->fb_chkcnt = -datablocks;
6641 fs->fs_pendingblocks += datablocks;
6643 DIP_SET(ip, i_blocks, DIP(ip, i_blocks) - datablocks);
6645 * Handle truncation of incomplete alloc direct dependencies. We
6646 * hold the inode block locked to prevent incomplete dependencies
6647 * from reaching the disk while we are eliminating those that
6648 * have been truncated. This is a partially inlined ffs_update().
6651 ip->i_flag &= ~(IN_LAZYACCESS | IN_LAZYMOD | IN_MODIFIED);
6652 error = bread(ump->um_devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)),
6653 (int)fs->fs_bsize, cred, &bp);
6656 softdep_error("softdep_journal_freeblocks", error);
6659 if (bp->b_bufsize == fs->fs_bsize)
6660 bp->b_flags |= B_CLUSTEROK;
6661 softdep_update_inodeblock(ip, bp, 0);
6662 if (ump->um_fstype == UFS1)
6663 *((struct ufs1_dinode *)bp->b_data +
6664 ino_to_fsbo(fs, ip->i_number)) = *ip->i_din1;
6666 *((struct ufs2_dinode *)bp->b_data +
6667 ino_to_fsbo(fs, ip->i_number)) = *ip->i_din2;
6669 (void) inodedep_lookup(mp, ip->i_number, DEPALLOC, &inodedep);
6670 if ((inodedep->id_state & IOSTARTED) != 0)
6671 panic("softdep_setup_freeblocks: inode busy");
6673 * Add the freeblks structure to the list of operations that
6674 * must await the zero'ed inode being written to disk. If we
6675 * still have a bitmap dependency (needj), then the inode
6676 * has never been written to disk, so we can process the
6677 * freeblks below once we have deleted the dependencies.
6680 WORKLIST_INSERT(&bp->b_dep, &freeblks->fb_list);
6682 freeblks->fb_state |= COMPLETE;
6683 if ((flags & IO_NORMAL) != 0) {
6684 TAILQ_FOREACH_SAFE(adp, &inodedep->id_inoupdt, ad_next, adpn) {
6685 if (adp->ad_offset > iboff)
6686 cancel_allocdirect(&inodedep->id_inoupdt, adp,
6689 * Truncate the allocdirect. We could eliminate
6690 * or modify journal records as well.
6692 else if (adp->ad_offset == iboff && frags)
6693 adp->ad_newsize = frags;
6696 if ((flags & IO_EXT) != 0)
6697 while ((adp = TAILQ_FIRST(&inodedep->id_extupdt)) != NULL)
6698 cancel_allocdirect(&inodedep->id_extupdt, adp,
6701 * Scan the bufwait list for newblock dependencies that will never
6704 LIST_FOREACH_SAFE(wk, &inodedep->id_bufwait, wk_list, wkn) {
6705 if (wk->wk_type != D_ALLOCDIRECT)
6707 adp = WK_ALLOCDIRECT(wk);
6708 if (((flags & IO_NORMAL) != 0 && (adp->ad_offset > iboff)) ||
6709 ((flags & IO_EXT) != 0 && (adp->ad_state & EXTDATA))) {
6710 cancel_jfreeblk(freeblks, adp->ad_newblkno);
6711 cancel_newblk(WK_NEWBLK(wk), NULL, &freeblks->fb_jwork);
6712 WORKLIST_INSERT(&freeblks->fb_freeworkhd, wk);
6718 LIST_FOREACH(jblkdep, &freeblks->fb_jblkdephd, jb_deps)
6719 add_to_journal(&jblkdep->jb_list);
6723 * Truncate dependency structures beyond length.
6725 trunc_dependencies(ip, freeblks, lastlbn, frags, flags);
6727 * This is only set when we need to allocate a fragment because
6728 * none existed at the end of a frag-sized file. It handles only
6729 * allocating a new, zero filled block.
6732 ip->i_size = length - lastoff;
6733 DIP_SET(ip, i_size, ip->i_size);
6734 error = UFS_BALLOC(vp, length - 1, 1, cred, BA_CLRBUF, &bp);
6736 softdep_error("softdep_journal_freeblks", error);
6739 ip->i_size = length;
6740 DIP_SET(ip, i_size, length);
6741 ip->i_flag |= IN_CHANGE | IN_UPDATE;
6742 allocbuf(bp, frags);
6745 } else if (lastoff != 0 && vp->v_type != VDIR) {
6749 * Zero the end of a truncated frag or block.
6751 size = sblksize(fs, length, lastlbn);
6752 error = bread(vp, lastlbn, size, cred, &bp);
6754 softdep_error("softdep_journal_freeblks", error);
6757 bzero((char *)bp->b_data + lastoff, size - lastoff);
6762 inodedep_lookup(mp, ip->i_number, DEPALLOC, &inodedep);
6763 TAILQ_INSERT_TAIL(&inodedep->id_freeblklst, freeblks, fb_next);
6764 freeblks->fb_state |= DEPCOMPLETE | ONDEPLIST;
6766 * We zero earlier truncations so they don't erroneously
6769 if (freeblks->fb_len == 0 && (flags & IO_NORMAL) != 0)
6770 TAILQ_FOREACH(fbn, &inodedep->id_freeblklst, fb_next)
6772 if ((freeblks->fb_state & ALLCOMPLETE) == ALLCOMPLETE &&
6773 LIST_EMPTY(&freeblks->fb_jblkdephd))
6774 freeblks->fb_state |= INPROGRESS;
6779 handle_workitem_freeblocks(freeblks, 0);
6780 trunc_pages(ip, length, extblocks, flags);
6785 * Flush a JOP_SYNC to the journal.
6788 softdep_journal_fsync(ip)
6791 struct jfsync *jfsync;
6792 struct ufsmount *ump;
6795 KASSERT(MOUNTEDSOFTDEP(UFSTOVFS(ump)) != 0,
6796 ("softdep_journal_fsync called on non-softdep filesystem"));
6797 if ((ip->i_flag & IN_TRUNCATED) == 0)
6799 ip->i_flag &= ~IN_TRUNCATED;
6800 jfsync = malloc(sizeof(*jfsync), M_JFSYNC, M_SOFTDEP_FLAGS | M_ZERO);
6801 workitem_alloc(&jfsync->jfs_list, D_JFSYNC, UFSTOVFS(ump));
6802 jfsync->jfs_size = ip->i_size;
6803 jfsync->jfs_ino = ip->i_number;
6805 add_to_journal(&jfsync->jfs_list);
6806 jwait(&jfsync->jfs_list, MNT_WAIT);
6811 * Block de-allocation dependencies.
6813 * When blocks are de-allocated, the on-disk pointers must be nullified before
6814 * the blocks are made available for use by other files. (The true
6815 * requirement is that old pointers must be nullified before new on-disk
6816 * pointers are set. We chose this slightly more stringent requirement to
6817 * reduce complexity.) Our implementation handles this dependency by updating
6818 * the inode (or indirect block) appropriately but delaying the actual block
6819 * de-allocation (i.e., freemap and free space count manipulation) until
6820 * after the updated versions reach stable storage. After the disk is
6821 * updated, the blocks can be safely de-allocated whenever it is convenient.
6822 * This implementation handles only the common case of reducing a file's
6823 * length to zero. Other cases are handled by the conventional synchronous
6826 * The ffs implementation with which we worked double-checks
6827 * the state of the block pointers and file size as it reduces
6828 * a file's length. Some of this code is replicated here in our
6829 * soft updates implementation. The freeblks->fb_chkcnt field is
6830 * used to transfer a part of this information to the procedure
6831 * that eventually de-allocates the blocks.
6833 * This routine should be called from the routine that shortens
6834 * a file's length, before the inode's size or block pointers
6835 * are modified. It will save the block pointer information for
6836 * later release and zero the inode so that the calling routine
6840 softdep_setup_freeblocks(ip, length, flags)
6841 struct inode *ip; /* The inode whose length is to be reduced */
6842 off_t length; /* The new length for the file */
6843 int flags; /* IO_EXT and/or IO_NORMAL */
6845 struct ufs1_dinode *dp1;
6846 struct ufs2_dinode *dp2;
6847 struct freeblks *freeblks;
6848 struct inodedep *inodedep;
6849 struct allocdirect *adp;
6850 struct ufsmount *ump;
6853 ufs2_daddr_t extblocks, datablocks;
6855 int i, delay, error;
6861 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
6862 ("softdep_setup_freeblocks called on non-softdep filesystem"));
6863 CTR2(KTR_SUJ, "softdep_setup_freeblks: ip %d length %ld",
6864 ip->i_number, length);
6865 KASSERT(length == 0, ("softdep_setup_freeblocks: non-zero length"));
6867 if ((error = bread(ump->um_devvp,
6868 fsbtodb(fs, ino_to_fsba(fs, ip->i_number)),
6869 (int)fs->fs_bsize, NOCRED, &bp)) != 0) {
6871 softdep_error("softdep_setup_freeblocks", error);
6874 freeblks = newfreeblks(mp, ip);
6877 if (fs->fs_magic == FS_UFS2_MAGIC)
6878 extblocks = btodb(fragroundup(fs, ip->i_din2->di_extsize));
6879 if ((flags & IO_NORMAL) != 0) {
6880 for (i = 0; i < NDADDR; i++)
6881 setup_freedirect(freeblks, ip, i, 0);
6882 for (i = 0, tmpval = NINDIR(fs), lbn = NDADDR; i < NIADDR;
6883 i++, lbn += tmpval, tmpval *= NINDIR(fs))
6884 setup_freeindir(freeblks, ip, i, -lbn -i, 0);
6886 DIP_SET(ip, i_size, 0);
6887 datablocks = DIP(ip, i_blocks) - extblocks;
6889 if ((flags & IO_EXT) != 0) {
6890 for (i = 0; i < NXADDR; i++)
6891 setup_freeext(freeblks, ip, i, 0);
6892 ip->i_din2->di_extsize = 0;
6893 datablocks += extblocks;
6896 /* Reference the quotas in case the block count is wrong in the end. */
6897 quotaref(ITOV(ip), freeblks->fb_quota);
6898 (void) chkdq(ip, -datablocks, NOCRED, 0);
6900 freeblks->fb_chkcnt = -datablocks;
6902 fs->fs_pendingblocks += datablocks;
6904 DIP_SET(ip, i_blocks, DIP(ip, i_blocks) - datablocks);
6906 * Push the zero'ed inode to to its disk buffer so that we are free
6907 * to delete its dependencies below. Once the dependencies are gone
6908 * the buffer can be safely released.
6910 if (ump->um_fstype == UFS1) {
6911 dp1 = ((struct ufs1_dinode *)bp->b_data +
6912 ino_to_fsbo(fs, ip->i_number));
6913 ip->i_din1->di_freelink = dp1->di_freelink;
6916 dp2 = ((struct ufs2_dinode *)bp->b_data +
6917 ino_to_fsbo(fs, ip->i_number));
6918 ip->i_din2->di_freelink = dp2->di_freelink;
6922 * Find and eliminate any inode dependencies.
6925 (void) inodedep_lookup(mp, ip->i_number, DEPALLOC, &inodedep);
6926 if ((inodedep->id_state & IOSTARTED) != 0)
6927 panic("softdep_setup_freeblocks: inode busy");
6929 * Add the freeblks structure to the list of operations that
6930 * must await the zero'ed inode being written to disk. If we
6931 * still have a bitmap dependency (delay == 0), then the inode
6932 * has never been written to disk, so we can process the
6933 * freeblks below once we have deleted the dependencies.
6935 delay = (inodedep->id_state & DEPCOMPLETE);
6937 WORKLIST_INSERT(&bp->b_dep, &freeblks->fb_list);
6939 freeblks->fb_state |= COMPLETE;
6941 * Because the file length has been truncated to zero, any
6942 * pending block allocation dependency structures associated
6943 * with this inode are obsolete and can simply be de-allocated.
6944 * We must first merge the two dependency lists to get rid of
6945 * any duplicate freefrag structures, then purge the merged list.
6946 * If we still have a bitmap dependency, then the inode has never
6947 * been written to disk, so we can free any fragments without delay.
6949 if (flags & IO_NORMAL) {
6950 merge_inode_lists(&inodedep->id_newinoupdt,
6951 &inodedep->id_inoupdt);
6952 while ((adp = TAILQ_FIRST(&inodedep->id_inoupdt)) != NULL)
6953 cancel_allocdirect(&inodedep->id_inoupdt, adp,
6956 if (flags & IO_EXT) {
6957 merge_inode_lists(&inodedep->id_newextupdt,
6958 &inodedep->id_extupdt);
6959 while ((adp = TAILQ_FIRST(&inodedep->id_extupdt)) != NULL)
6960 cancel_allocdirect(&inodedep->id_extupdt, adp,
6965 trunc_dependencies(ip, freeblks, -1, 0, flags);
6967 if (inodedep_lookup(mp, ip->i_number, 0, &inodedep) != 0)
6968 (void) free_inodedep(inodedep);
6969 freeblks->fb_state |= DEPCOMPLETE;
6971 * If the inode with zeroed block pointers is now on disk
6972 * we can start freeing blocks.
6974 if ((freeblks->fb_state & ALLCOMPLETE) == ALLCOMPLETE)
6975 freeblks->fb_state |= INPROGRESS;
6980 handle_workitem_freeblocks(freeblks, 0);
6981 trunc_pages(ip, length, extblocks, flags);
6985 * Eliminate pages from the page cache that back parts of this inode and
6986 * adjust the vnode pager's idea of our size. This prevents stale data
6987 * from hanging around in the page cache.
6990 trunc_pages(ip, length, extblocks, flags)
6993 ufs2_daddr_t extblocks;
7003 extend = OFF_TO_IDX(lblktosize(fs, -extblocks));
7004 if ((flags & IO_EXT) != 0)
7005 vn_pages_remove(vp, extend, 0);
7006 if ((flags & IO_NORMAL) == 0)
7008 BO_LOCK(&vp->v_bufobj);
7010 BO_UNLOCK(&vp->v_bufobj);
7012 * The vnode pager eliminates file pages we eliminate indirects
7015 vnode_pager_setsize(vp, length);
7017 * Calculate the end based on the last indirect we want to keep. If
7018 * the block extends into indirects we can just use the negative of
7019 * its lbn. Doubles and triples exist at lower numbers so we must
7020 * be careful not to remove those, if they exist. double and triple
7021 * indirect lbns do not overlap with others so it is not important
7022 * to verify how many levels are required.
7024 lbn = lblkno(fs, length);
7025 if (lbn >= NDADDR) {
7026 /* Calculate the virtual lbn of the triple indirect. */
7027 lbn = -lbn - (NIADDR - 1);
7028 end = OFF_TO_IDX(lblktosize(fs, lbn));
7031 vn_pages_remove(vp, OFF_TO_IDX(OFF_MAX), end);
7035 * See if the buf bp is in the range eliminated by truncation.
7038 trunc_check_buf(bp, blkoffp, lastlbn, lastoff, flags)
7048 /* Only match ext/normal blocks as appropriate. */
7049 if (((flags & IO_EXT) == 0 && (bp->b_xflags & BX_ALTDATA)) ||
7050 ((flags & IO_NORMAL) == 0 && (bp->b_xflags & BX_ALTDATA) == 0))
7052 /* ALTDATA is always a full truncation. */
7053 if ((bp->b_xflags & BX_ALTDATA) != 0)
7055 /* -1 is full truncation. */
7059 * If this is a partial truncate we only want those
7060 * blocks and indirect blocks that cover the range
7065 lbn = -(lbn + lbn_level(lbn));
7068 /* Here we only truncate lblkno if it's partial. */
7069 if (lbn == lastlbn) {
7078 * Eliminate any dependencies that exist in memory beyond lblkno:off
7081 trunc_dependencies(ip, freeblks, lastlbn, lastoff, flags)
7083 struct freeblks *freeblks;
7094 * We must wait for any I/O in progress to finish so that
7095 * all potential buffers on the dirty list will be visible.
7096 * Once they are all there, walk the list and get rid of
7103 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs)
7104 bp->b_vflags &= ~BV_SCANNED;
7106 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs) {
7107 if (bp->b_vflags & BV_SCANNED)
7109 if (!trunc_check_buf(bp, &blkoff, lastlbn, lastoff, flags)) {
7110 bp->b_vflags |= BV_SCANNED;
7113 KASSERT(bp->b_bufobj == bo, ("Wrong object in buffer"));
7114 if ((bp = getdirtybuf(bp, BO_LOCKPTR(bo), MNT_WAIT)) == NULL)
7117 if (deallocate_dependencies(bp, freeblks, blkoff))
7125 * Now do the work of vtruncbuf while also matching indirect blocks.
7127 TAILQ_FOREACH(bp, &bo->bo_clean.bv_hd, b_bobufs)
7128 bp->b_vflags &= ~BV_SCANNED;
7130 TAILQ_FOREACH(bp, &bo->bo_clean.bv_hd, b_bobufs) {
7131 if (bp->b_vflags & BV_SCANNED)
7133 if (!trunc_check_buf(bp, &blkoff, lastlbn, lastoff, flags)) {
7134 bp->b_vflags |= BV_SCANNED;
7138 LK_EXCLUSIVE | LK_SLEEPFAIL | LK_INTERLOCK,
7139 BO_LOCKPTR(bo)) == ENOLCK) {
7143 bp->b_vflags |= BV_SCANNED;
7146 allocbuf(bp, blkoff);
7149 bp->b_flags |= B_INVAL | B_NOCACHE | B_RELBUF;
7160 cancel_pagedep(pagedep, freeblks, blkoff)
7161 struct pagedep *pagedep;
7162 struct freeblks *freeblks;
7165 struct jremref *jremref;
7166 struct jmvref *jmvref;
7167 struct dirrem *dirrem, *tmp;
7171 * Copy any directory remove dependencies to the list
7172 * to be processed after the freeblks proceeds. If
7173 * directory entry never made it to disk they
7174 * can be dumped directly onto the work list.
7176 LIST_FOREACH_SAFE(dirrem, &pagedep->pd_dirremhd, dm_next, tmp) {
7177 /* Skip this directory removal if it is intended to remain. */
7178 if (dirrem->dm_offset < blkoff)
7181 * If there are any dirrems we wait for the journal write
7182 * to complete and then restart the buf scan as the lock
7185 while ((jremref = LIST_FIRST(&dirrem->dm_jremrefhd)) != NULL) {
7186 jwait(&jremref->jr_list, MNT_WAIT);
7189 LIST_REMOVE(dirrem, dm_next);
7190 dirrem->dm_dirinum = pagedep->pd_ino;
7191 WORKLIST_INSERT(&freeblks->fb_freeworkhd, &dirrem->dm_list);
7193 while ((jmvref = LIST_FIRST(&pagedep->pd_jmvrefhd)) != NULL) {
7194 jwait(&jmvref->jm_list, MNT_WAIT);
7198 * When we're partially truncating a pagedep we just want to flush
7199 * journal entries and return. There can not be any adds in the
7200 * truncated portion of the directory and newblk must remain if
7201 * part of the block remains.
7206 LIST_FOREACH(dap, &pagedep->pd_pendinghd, da_pdlist)
7207 if (dap->da_offset > blkoff)
7208 panic("cancel_pagedep: diradd %p off %d > %d",
7209 dap, dap->da_offset, blkoff);
7210 for (i = 0; i < DAHASHSZ; i++)
7211 LIST_FOREACH(dap, &pagedep->pd_diraddhd[i], da_pdlist)
7212 if (dap->da_offset > blkoff)
7213 panic("cancel_pagedep: diradd %p off %d > %d",
7214 dap, dap->da_offset, blkoff);
7218 * There should be no directory add dependencies present
7219 * as the directory could not be truncated until all
7220 * children were removed.
7222 KASSERT(LIST_FIRST(&pagedep->pd_pendinghd) == NULL,
7223 ("deallocate_dependencies: pendinghd != NULL"));
7224 for (i = 0; i < DAHASHSZ; i++)
7225 KASSERT(LIST_FIRST(&pagedep->pd_diraddhd[i]) == NULL,
7226 ("deallocate_dependencies: diraddhd != NULL"));
7227 if ((pagedep->pd_state & NEWBLOCK) != 0)
7228 free_newdirblk(pagedep->pd_newdirblk);
7229 if (free_pagedep(pagedep) == 0)
7230 panic("Failed to free pagedep %p", pagedep);
7235 * Reclaim any dependency structures from a buffer that is about to
7236 * be reallocated to a new vnode. The buffer must be locked, thus,
7237 * no I/O completion operations can occur while we are manipulating
7238 * its associated dependencies. The mutex is held so that other I/O's
7239 * associated with related dependencies do not occur.
7242 deallocate_dependencies(bp, freeblks, off)
7244 struct freeblks *freeblks;
7247 struct indirdep *indirdep;
7248 struct pagedep *pagedep;
7249 struct worklist *wk, *wkn;
7250 struct ufsmount *ump;
7252 if ((wk = LIST_FIRST(&bp->b_dep)) == NULL)
7254 ump = VFSTOUFS(wk->wk_mp);
7256 LIST_FOREACH_SAFE(wk, &bp->b_dep, wk_list, wkn) {
7257 switch (wk->wk_type) {
7259 indirdep = WK_INDIRDEP(wk);
7260 if (bp->b_lblkno >= 0 ||
7261 bp->b_blkno != indirdep->ir_savebp->b_lblkno)
7262 panic("deallocate_dependencies: not indir");
7263 cancel_indirdep(indirdep, bp, freeblks);
7267 pagedep = WK_PAGEDEP(wk);
7268 if (cancel_pagedep(pagedep, freeblks, off)) {
7276 * Simply remove the allocindir, we'll find it via
7277 * the indirdep where we can clear pointers if
7280 WORKLIST_REMOVE(wk);
7285 * A truncation is waiting for the zero'd pointers
7286 * to be written. It can be freed when the freeblks
7289 WORKLIST_REMOVE(wk);
7290 wk->wk_state |= ONDEPLIST;
7291 WORKLIST_INSERT(&freeblks->fb_freeworkhd, wk);
7299 panic("deallocate_dependencies: Unexpected type %s",
7300 TYPENAME(wk->wk_type));
7307 * Don't throw away this buf, we were partially truncating and
7308 * some deps may always remain.
7312 bp->b_vflags |= BV_SCANNED;
7315 bp->b_flags |= B_INVAL | B_NOCACHE;
7321 * An allocdirect is being canceled due to a truncate. We must make sure
7322 * the journal entry is released in concert with the blkfree that releases
7323 * the storage. Completed journal entries must not be released until the
7324 * space is no longer pointed to by the inode or in the bitmap.
7327 cancel_allocdirect(adphead, adp, freeblks)
7328 struct allocdirectlst *adphead;
7329 struct allocdirect *adp;
7330 struct freeblks *freeblks;
7332 struct freework *freework;
7333 struct newblk *newblk;
7334 struct worklist *wk;
7336 TAILQ_REMOVE(adphead, adp, ad_next);
7337 newblk = (struct newblk *)adp;
7340 * Find the correct freework structure.
7342 LIST_FOREACH(wk, &freeblks->fb_freeworkhd, wk_list) {
7343 if (wk->wk_type != D_FREEWORK)
7345 freework = WK_FREEWORK(wk);
7346 if (freework->fw_blkno == newblk->nb_newblkno)
7349 if (freework == NULL)
7350 panic("cancel_allocdirect: Freework not found");
7352 * If a newblk exists at all we still have the journal entry that
7353 * initiated the allocation so we do not need to journal the free.
7355 cancel_jfreeblk(freeblks, freework->fw_blkno);
7357 * If the journal hasn't been written the jnewblk must be passed
7358 * to the call to ffs_blkfree that reclaims the space. We accomplish
7359 * this by linking the journal dependency into the freework to be
7360 * freed when freework_freeblock() is called. If the journal has
7361 * been written we can simply reclaim the journal space when the
7362 * freeblks work is complete.
7364 freework->fw_jnewblk = cancel_newblk(newblk, &freework->fw_list,
7365 &freeblks->fb_jwork);
7366 WORKLIST_INSERT(&freeblks->fb_freeworkhd, &newblk->nb_list);
7371 * Cancel a new block allocation. May be an indirect or direct block. We
7372 * remove it from various lists and return any journal record that needs to
7373 * be resolved by the caller.
7375 * A special consideration is made for indirects which were never pointed
7376 * at on disk and will never be found once this block is released.
7378 static struct jnewblk *
7379 cancel_newblk(newblk, wk, wkhd)
7380 struct newblk *newblk;
7381 struct worklist *wk;
7382 struct workhead *wkhd;
7384 struct jnewblk *jnewblk;
7386 CTR1(KTR_SUJ, "cancel_newblk: blkno %jd", newblk->nb_newblkno);
7388 newblk->nb_state |= GOINGAWAY;
7390 * Previously we traversed the completedhd on each indirdep
7391 * attached to this newblk to cancel them and gather journal
7392 * work. Since we need only the oldest journal segment and
7393 * the lowest point on the tree will always have the oldest
7394 * journal segment we are free to release the segments
7395 * of any subordinates and may leave the indirdep list to
7396 * indirdep_complete() when this newblk is freed.
7398 if (newblk->nb_state & ONDEPLIST) {
7399 newblk->nb_state &= ~ONDEPLIST;
7400 LIST_REMOVE(newblk, nb_deps);
7402 if (newblk->nb_state & ONWORKLIST)
7403 WORKLIST_REMOVE(&newblk->nb_list);
7405 * If the journal entry hasn't been written we save a pointer to
7406 * the dependency that frees it until it is written or the
7407 * superseding operation completes.
7409 jnewblk = newblk->nb_jnewblk;
7410 if (jnewblk != NULL && wk != NULL) {
7411 newblk->nb_jnewblk = NULL;
7412 jnewblk->jn_dep = wk;
7414 if (!LIST_EMPTY(&newblk->nb_jwork))
7415 jwork_move(wkhd, &newblk->nb_jwork);
7417 * When truncating we must free the newdirblk early to remove
7418 * the pagedep from the hash before returning.
7420 if ((wk = LIST_FIRST(&newblk->nb_newdirblk)) != NULL)
7421 free_newdirblk(WK_NEWDIRBLK(wk));
7422 if (!LIST_EMPTY(&newblk->nb_newdirblk))
7423 panic("cancel_newblk: extra newdirblk");
7429 * Schedule the freefrag associated with a newblk to be released once
7430 * the pointers are written and the previous block is no longer needed.
7433 newblk_freefrag(newblk)
7434 struct newblk *newblk;
7436 struct freefrag *freefrag;
7438 if (newblk->nb_freefrag == NULL)
7440 freefrag = newblk->nb_freefrag;
7441 newblk->nb_freefrag = NULL;
7442 freefrag->ff_state |= COMPLETE;
7443 if ((freefrag->ff_state & ALLCOMPLETE) == ALLCOMPLETE)
7444 add_to_worklist(&freefrag->ff_list, 0);
7448 * Free a newblk. Generate a new freefrag work request if appropriate.
7449 * This must be called after the inode pointer and any direct block pointers
7450 * are valid or fully removed via truncate or frag extension.
7454 struct newblk *newblk;
7456 struct indirdep *indirdep;
7457 struct worklist *wk;
7459 KASSERT(newblk->nb_jnewblk == NULL,
7460 ("free_newblk: jnewblk %p still attached", newblk->nb_jnewblk));
7461 KASSERT(newblk->nb_list.wk_type != D_NEWBLK,
7462 ("free_newblk: unclaimed newblk"));
7463 LOCK_OWNED(VFSTOUFS(newblk->nb_list.wk_mp));
7464 newblk_freefrag(newblk);
7465 if (newblk->nb_state & ONDEPLIST)
7466 LIST_REMOVE(newblk, nb_deps);
7467 if (newblk->nb_state & ONWORKLIST)
7468 WORKLIST_REMOVE(&newblk->nb_list);
7469 LIST_REMOVE(newblk, nb_hash);
7470 if ((wk = LIST_FIRST(&newblk->nb_newdirblk)) != NULL)
7471 free_newdirblk(WK_NEWDIRBLK(wk));
7472 if (!LIST_EMPTY(&newblk->nb_newdirblk))
7473 panic("free_newblk: extra newdirblk");
7474 while ((indirdep = LIST_FIRST(&newblk->nb_indirdeps)) != NULL)
7475 indirdep_complete(indirdep);
7476 handle_jwork(&newblk->nb_jwork);
7477 WORKITEM_FREE(newblk, D_NEWBLK);
7481 * Free a newdirblk. Clear the NEWBLOCK flag on its associated pagedep.
7482 * This routine must be called with splbio interrupts blocked.
7485 free_newdirblk(newdirblk)
7486 struct newdirblk *newdirblk;
7488 struct pagedep *pagedep;
7490 struct worklist *wk;
7492 LOCK_OWNED(VFSTOUFS(newdirblk->db_list.wk_mp));
7493 WORKLIST_REMOVE(&newdirblk->db_list);
7495 * If the pagedep is still linked onto the directory buffer
7496 * dependency chain, then some of the entries on the
7497 * pd_pendinghd list may not be committed to disk yet. In
7498 * this case, we will simply clear the NEWBLOCK flag and
7499 * let the pd_pendinghd list be processed when the pagedep
7500 * is next written. If the pagedep is no longer on the buffer
7501 * dependency chain, then all the entries on the pd_pending
7502 * list are committed to disk and we can free them here.
7504 pagedep = newdirblk->db_pagedep;
7505 pagedep->pd_state &= ~NEWBLOCK;
7506 if ((pagedep->pd_state & ONWORKLIST) == 0) {
7507 while ((dap = LIST_FIRST(&pagedep->pd_pendinghd)) != NULL)
7508 free_diradd(dap, NULL);
7510 * If no dependencies remain, the pagedep will be freed.
7512 free_pagedep(pagedep);
7514 /* Should only ever be one item in the list. */
7515 while ((wk = LIST_FIRST(&newdirblk->db_mkdir)) != NULL) {
7516 WORKLIST_REMOVE(wk);
7517 handle_written_mkdir(WK_MKDIR(wk), MKDIR_BODY);
7519 WORKITEM_FREE(newdirblk, D_NEWDIRBLK);
7523 * Prepare an inode to be freed. The actual free operation is not
7524 * done until the zero'ed inode has been written to disk.
7527 softdep_freefile(pvp, ino, mode)
7532 struct inode *ip = VTOI(pvp);
7533 struct inodedep *inodedep;
7534 struct freefile *freefile;
7535 struct freeblks *freeblks;
7536 struct ufsmount *ump;
7539 KASSERT(MOUNTEDSOFTDEP(UFSTOVFS(ump)) != 0,
7540 ("softdep_freefile called on non-softdep filesystem"));
7542 * This sets up the inode de-allocation dependency.
7544 freefile = malloc(sizeof(struct freefile),
7545 M_FREEFILE, M_SOFTDEP_FLAGS);
7546 workitem_alloc(&freefile->fx_list, D_FREEFILE, pvp->v_mount);
7547 freefile->fx_mode = mode;
7548 freefile->fx_oldinum = ino;
7549 freefile->fx_devvp = ump->um_devvp;
7550 LIST_INIT(&freefile->fx_jwork);
7552 ump->um_fs->fs_pendinginodes += 1;
7556 * If the inodedep does not exist, then the zero'ed inode has
7557 * been written to disk. If the allocated inode has never been
7558 * written to disk, then the on-disk inode is zero'ed. In either
7559 * case we can free the file immediately. If the journal was
7560 * canceled before being written the inode will never make it to
7561 * disk and we must send the canceled journal entrys to
7562 * ffs_freefile() to be cleared in conjunction with the bitmap.
7563 * Any blocks waiting on the inode to write can be safely freed
7564 * here as it will never been written.
7567 inodedep_lookup(pvp->v_mount, ino, 0, &inodedep);
7570 * Clear out freeblks that no longer need to reference
7574 TAILQ_FIRST(&inodedep->id_freeblklst)) != NULL) {
7575 TAILQ_REMOVE(&inodedep->id_freeblklst, freeblks,
7577 freeblks->fb_state &= ~ONDEPLIST;
7580 * Remove this inode from the unlinked list.
7582 if (inodedep->id_state & UNLINKED) {
7584 * Save the journal work to be freed with the bitmap
7585 * before we clear UNLINKED. Otherwise it can be lost
7586 * if the inode block is written.
7588 handle_bufwait(inodedep, &freefile->fx_jwork);
7589 clear_unlinked_inodedep(inodedep);
7591 * Re-acquire inodedep as we've dropped the
7592 * per-filesystem lock in clear_unlinked_inodedep().
7594 inodedep_lookup(pvp->v_mount, ino, 0, &inodedep);
7597 if (inodedep == NULL || check_inode_unwritten(inodedep)) {
7599 handle_workitem_freefile(freefile);
7602 if ((inodedep->id_state & DEPCOMPLETE) == 0)
7603 inodedep->id_state |= GOINGAWAY;
7604 WORKLIST_INSERT(&inodedep->id_inowait, &freefile->fx_list);
7606 if (ip->i_number == ino)
7607 ip->i_flag |= IN_MODIFIED;
7611 * Check to see if an inode has never been written to disk. If
7612 * so free the inodedep and return success, otherwise return failure.
7613 * This routine must be called with splbio interrupts blocked.
7615 * If we still have a bitmap dependency, then the inode has never
7616 * been written to disk. Drop the dependency as it is no longer
7617 * necessary since the inode is being deallocated. We set the
7618 * ALLCOMPLETE flags since the bitmap now properly shows that the
7619 * inode is not allocated. Even if the inode is actively being
7620 * written, it has been rolled back to its zero'ed state, so we
7621 * are ensured that a zero inode is what is on the disk. For short
7622 * lived files, this change will usually result in removing all the
7623 * dependencies from the inode so that it can be freed immediately.
7626 check_inode_unwritten(inodedep)
7627 struct inodedep *inodedep;
7630 LOCK_OWNED(VFSTOUFS(inodedep->id_list.wk_mp));
7632 if ((inodedep->id_state & (DEPCOMPLETE | UNLINKED)) != 0 ||
7633 !LIST_EMPTY(&inodedep->id_dirremhd) ||
7634 !LIST_EMPTY(&inodedep->id_pendinghd) ||
7635 !LIST_EMPTY(&inodedep->id_bufwait) ||
7636 !LIST_EMPTY(&inodedep->id_inowait) ||
7637 !TAILQ_EMPTY(&inodedep->id_inoreflst) ||
7638 !TAILQ_EMPTY(&inodedep->id_inoupdt) ||
7639 !TAILQ_EMPTY(&inodedep->id_newinoupdt) ||
7640 !TAILQ_EMPTY(&inodedep->id_extupdt) ||
7641 !TAILQ_EMPTY(&inodedep->id_newextupdt) ||
7642 !TAILQ_EMPTY(&inodedep->id_freeblklst) ||
7643 inodedep->id_mkdiradd != NULL ||
7644 inodedep->id_nlinkdelta != 0)
7647 * Another process might be in initiate_write_inodeblock_ufs[12]
7648 * trying to allocate memory without holding "Softdep Lock".
7650 if ((inodedep->id_state & IOSTARTED) != 0 &&
7651 inodedep->id_savedino1 == NULL)
7654 if (inodedep->id_state & ONDEPLIST)
7655 LIST_REMOVE(inodedep, id_deps);
7656 inodedep->id_state &= ~ONDEPLIST;
7657 inodedep->id_state |= ALLCOMPLETE;
7658 inodedep->id_bmsafemap = NULL;
7659 if (inodedep->id_state & ONWORKLIST)
7660 WORKLIST_REMOVE(&inodedep->id_list);
7661 if (inodedep->id_savedino1 != NULL) {
7662 free(inodedep->id_savedino1, M_SAVEDINO);
7663 inodedep->id_savedino1 = NULL;
7665 if (free_inodedep(inodedep) == 0)
7666 panic("check_inode_unwritten: busy inode");
7671 check_inodedep_free(inodedep)
7672 struct inodedep *inodedep;
7675 LOCK_OWNED(VFSTOUFS(inodedep->id_list.wk_mp));
7676 if ((inodedep->id_state & ALLCOMPLETE) != ALLCOMPLETE ||
7677 !LIST_EMPTY(&inodedep->id_dirremhd) ||
7678 !LIST_EMPTY(&inodedep->id_pendinghd) ||
7679 !LIST_EMPTY(&inodedep->id_bufwait) ||
7680 !LIST_EMPTY(&inodedep->id_inowait) ||
7681 !TAILQ_EMPTY(&inodedep->id_inoreflst) ||
7682 !TAILQ_EMPTY(&inodedep->id_inoupdt) ||
7683 !TAILQ_EMPTY(&inodedep->id_newinoupdt) ||
7684 !TAILQ_EMPTY(&inodedep->id_extupdt) ||
7685 !TAILQ_EMPTY(&inodedep->id_newextupdt) ||
7686 !TAILQ_EMPTY(&inodedep->id_freeblklst) ||
7687 inodedep->id_mkdiradd != NULL ||
7688 inodedep->id_nlinkdelta != 0 ||
7689 inodedep->id_savedino1 != NULL)
7695 * Try to free an inodedep structure. Return 1 if it could be freed.
7698 free_inodedep(inodedep)
7699 struct inodedep *inodedep;
7702 LOCK_OWNED(VFSTOUFS(inodedep->id_list.wk_mp));
7703 if ((inodedep->id_state & (ONWORKLIST | UNLINKED)) != 0 ||
7704 !check_inodedep_free(inodedep))
7706 if (inodedep->id_state & ONDEPLIST)
7707 LIST_REMOVE(inodedep, id_deps);
7708 LIST_REMOVE(inodedep, id_hash);
7709 WORKITEM_FREE(inodedep, D_INODEDEP);
7714 * Free the block referenced by a freework structure. The parent freeblks
7715 * structure is released and completed when the final cg bitmap reaches
7716 * the disk. This routine may be freeing a jnewblk which never made it to
7717 * disk in which case we do not have to wait as the operation is undone
7718 * in memory immediately.
7721 freework_freeblock(freework)
7722 struct freework *freework;
7724 struct freeblks *freeblks;
7725 struct jnewblk *jnewblk;
7726 struct ufsmount *ump;
7727 struct workhead wkhd;
7732 ump = VFSTOUFS(freework->fw_list.wk_mp);
7735 * Handle partial truncate separately.
7737 if (freework->fw_indir) {
7738 complete_trunc_indir(freework);
7741 freeblks = freework->fw_freeblks;
7743 needj = MOUNTEDSUJ(freeblks->fb_list.wk_mp) != 0;
7744 bsize = lfragtosize(fs, freework->fw_frags);
7747 * DEPCOMPLETE is cleared in indirblk_insert() if the block lives
7748 * on the indirblk hashtable and prevents premature freeing.
7750 freework->fw_state |= DEPCOMPLETE;
7752 * SUJ needs to wait for the segment referencing freed indirect
7753 * blocks to expire so that we know the checker will not confuse
7754 * a re-allocated indirect block with its old contents.
7756 if (needj && freework->fw_lbn <= -NDADDR)
7757 indirblk_insert(freework);
7759 * If we are canceling an existing jnewblk pass it to the free
7760 * routine, otherwise pass the freeblk which will ultimately
7761 * release the freeblks. If we're not journaling, we can just
7762 * free the freeblks immediately.
7764 jnewblk = freework->fw_jnewblk;
7765 if (jnewblk != NULL) {
7766 cancel_jnewblk(jnewblk, &wkhd);
7769 freework->fw_state |= DELAYEDFREE;
7770 freeblks->fb_cgwait++;
7771 WORKLIST_INSERT(&wkhd, &freework->fw_list);
7774 freeblks_free(ump, freeblks, btodb(bsize));
7776 "freework_freeblock: ino %d blkno %jd lbn %jd size %ld",
7777 freeblks->fb_inum, freework->fw_blkno, freework->fw_lbn, bsize);
7778 ffs_blkfree(ump, fs, freeblks->fb_devvp, freework->fw_blkno, bsize,
7779 freeblks->fb_inum, freeblks->fb_vtype, &wkhd);
7782 * The jnewblk will be discarded and the bits in the map never
7783 * made it to disk. We can immediately free the freeblk.
7786 handle_written_freework(freework);
7790 * We enqueue freework items that need processing back on the freeblks and
7791 * add the freeblks to the worklist. This makes it easier to find all work
7792 * required to flush a truncation in process_truncates().
7795 freework_enqueue(freework)
7796 struct freework *freework;
7798 struct freeblks *freeblks;
7800 freeblks = freework->fw_freeblks;
7801 if ((freework->fw_state & INPROGRESS) == 0)
7802 WORKLIST_INSERT(&freeblks->fb_freeworkhd, &freework->fw_list);
7803 if ((freeblks->fb_state &
7804 (ONWORKLIST | INPROGRESS | ALLCOMPLETE)) == ALLCOMPLETE &&
7805 LIST_EMPTY(&freeblks->fb_jblkdephd))
7806 add_to_worklist(&freeblks->fb_list, WK_NODELAY);
7810 * Start, continue, or finish the process of freeing an indirect block tree.
7811 * The free operation may be paused at any point with fw_off containing the
7812 * offset to restart from. This enables us to implement some flow control
7813 * for large truncates which may fan out and generate a huge number of
7817 handle_workitem_indirblk(freework)
7818 struct freework *freework;
7820 struct freeblks *freeblks;
7821 struct ufsmount *ump;
7824 freeblks = freework->fw_freeblks;
7825 ump = VFSTOUFS(freeblks->fb_list.wk_mp);
7827 if (freework->fw_state & DEPCOMPLETE) {
7828 handle_written_freework(freework);
7831 if (freework->fw_off == NINDIR(fs)) {
7832 freework_freeblock(freework);
7835 freework->fw_state |= INPROGRESS;
7837 indir_trunc(freework, fsbtodb(fs, freework->fw_blkno),
7843 * Called when a freework structure attached to a cg buf is written. The
7844 * ref on either the parent or the freeblks structure is released and
7845 * the freeblks is added back to the worklist if there is more work to do.
7848 handle_written_freework(freework)
7849 struct freework *freework;
7851 struct freeblks *freeblks;
7852 struct freework *parent;
7854 freeblks = freework->fw_freeblks;
7855 parent = freework->fw_parent;
7856 if (freework->fw_state & DELAYEDFREE)
7857 freeblks->fb_cgwait--;
7858 freework->fw_state |= COMPLETE;
7859 if ((freework->fw_state & ALLCOMPLETE) == ALLCOMPLETE)
7860 WORKITEM_FREE(freework, D_FREEWORK);
7862 if (--parent->fw_ref == 0)
7863 freework_enqueue(parent);
7866 if (--freeblks->fb_ref != 0)
7868 if ((freeblks->fb_state & (ALLCOMPLETE | ONWORKLIST | INPROGRESS)) ==
7869 ALLCOMPLETE && LIST_EMPTY(&freeblks->fb_jblkdephd))
7870 add_to_worklist(&freeblks->fb_list, WK_NODELAY);
7874 * This workitem routine performs the block de-allocation.
7875 * The workitem is added to the pending list after the updated
7876 * inode block has been written to disk. As mentioned above,
7877 * checks regarding the number of blocks de-allocated (compared
7878 * to the number of blocks allocated for the file) are also
7879 * performed in this function.
7882 handle_workitem_freeblocks(freeblks, flags)
7883 struct freeblks *freeblks;
7886 struct freework *freework;
7887 struct newblk *newblk;
7888 struct allocindir *aip;
7889 struct ufsmount *ump;
7890 struct worklist *wk;
7892 KASSERT(LIST_EMPTY(&freeblks->fb_jblkdephd),
7893 ("handle_workitem_freeblocks: Journal entries not written."));
7894 ump = VFSTOUFS(freeblks->fb_list.wk_mp);
7896 while ((wk = LIST_FIRST(&freeblks->fb_freeworkhd)) != NULL) {
7897 WORKLIST_REMOVE(wk);
7898 switch (wk->wk_type) {
7900 wk->wk_state |= COMPLETE;
7901 add_to_worklist(wk, 0);
7905 free_newblk(WK_NEWBLK(wk));
7909 aip = WK_ALLOCINDIR(wk);
7911 if (aip->ai_state & DELAYEDFREE) {
7913 freework = newfreework(ump, freeblks, NULL,
7914 aip->ai_lbn, aip->ai_newblkno,
7915 ump->um_fs->fs_frag, 0, 0);
7918 newblk = WK_NEWBLK(wk);
7919 if (newblk->nb_jnewblk) {
7920 freework->fw_jnewblk = newblk->nb_jnewblk;
7921 newblk->nb_jnewblk->jn_dep = &freework->fw_list;
7922 newblk->nb_jnewblk = NULL;
7924 free_newblk(newblk);
7928 freework = WK_FREEWORK(wk);
7929 if (freework->fw_lbn <= -NDADDR)
7930 handle_workitem_indirblk(freework);
7932 freework_freeblock(freework);
7935 panic("handle_workitem_freeblocks: Unknown type %s",
7936 TYPENAME(wk->wk_type));
7939 if (freeblks->fb_ref != 0) {
7940 freeblks->fb_state &= ~INPROGRESS;
7941 wake_worklist(&freeblks->fb_list);
7946 return handle_complete_freeblocks(freeblks, flags);
7951 * Handle completion of block free via truncate. This allows fs_pending
7952 * to track the actual free block count more closely than if we only updated
7953 * it at the end. We must be careful to handle cases where the block count
7954 * on free was incorrect.
7957 freeblks_free(ump, freeblks, blocks)
7958 struct ufsmount *ump;
7959 struct freeblks *freeblks;
7963 ufs2_daddr_t remain;
7966 remain = -freeblks->fb_chkcnt;
7967 freeblks->fb_chkcnt += blocks;
7969 if (remain < blocks)
7972 fs->fs_pendingblocks -= blocks;
7978 * Once all of the freework workitems are complete we can retire the
7979 * freeblocks dependency and any journal work awaiting completion. This
7980 * can not be called until all other dependencies are stable on disk.
7983 handle_complete_freeblocks(freeblks, flags)
7984 struct freeblks *freeblks;
7987 struct inodedep *inodedep;
7991 struct ufsmount *ump;
7994 ump = VFSTOUFS(freeblks->fb_list.wk_mp);
7996 flags = LK_EXCLUSIVE | flags;
7997 spare = freeblks->fb_chkcnt;
8000 * If we did not release the expected number of blocks we may have
8001 * to adjust the inode block count here. Only do so if it wasn't
8002 * a truncation to zero and the modrev still matches.
8004 if (spare && freeblks->fb_len != 0) {
8005 if (ffs_vgetf(freeblks->fb_list.wk_mp, freeblks->fb_inum,
8006 flags, &vp, FFSV_FORCEINSMQ) != 0)
8009 if (DIP(ip, i_modrev) == freeblks->fb_modrev) {
8010 DIP_SET(ip, i_blocks, DIP(ip, i_blocks) - spare);
8011 ip->i_flag |= IN_CHANGE;
8013 * We must wait so this happens before the
8014 * journal is reclaimed.
8022 fs->fs_pendingblocks += spare;
8028 quotaadj(freeblks->fb_quota, ump, -spare);
8029 quotarele(freeblks->fb_quota);
8032 if (freeblks->fb_state & ONDEPLIST) {
8033 inodedep_lookup(freeblks->fb_list.wk_mp, freeblks->fb_inum,
8035 TAILQ_REMOVE(&inodedep->id_freeblklst, freeblks, fb_next);
8036 freeblks->fb_state &= ~ONDEPLIST;
8037 if (TAILQ_EMPTY(&inodedep->id_freeblklst))
8038 free_inodedep(inodedep);
8041 * All of the freeblock deps must be complete prior to this call
8042 * so it's now safe to complete earlier outstanding journal entries.
8044 handle_jwork(&freeblks->fb_jwork);
8045 WORKITEM_FREE(freeblks, D_FREEBLKS);
8051 * Release blocks associated with the freeblks and stored in the indirect
8052 * block dbn. If level is greater than SINGLE, the block is an indirect block
8053 * and recursive calls to indirtrunc must be used to cleanse other indirect
8056 * This handles partial and complete truncation of blocks. Partial is noted
8057 * with goingaway == 0. In this case the freework is completed after the
8058 * zero'd indirects are written to disk. For full truncation the freework
8059 * is completed after the block is freed.
8062 indir_trunc(freework, dbn, lbn)
8063 struct freework *freework;
8067 struct freework *nfreework;
8068 struct workhead wkhd;
8069 struct freeblks *freeblks;
8072 struct indirdep *indirdep;
8073 struct ufsmount *ump;
8075 ufs2_daddr_t nb, nnb, *bap2;
8076 ufs_lbn_t lbnadd, nlbn;
8077 int i, nblocks, ufs1fmt;
8085 freeblks = freework->fw_freeblks;
8086 ump = VFSTOUFS(freeblks->fb_list.wk_mp);
8089 * Get buffer of block pointers to be freed. There are three cases:
8091 * 1) Partial truncate caches the indirdep pointer in the freework
8092 * which provides us a back copy to the save bp which holds the
8093 * pointers we want to clear. When this completes the zero
8094 * pointers are written to the real copy.
8095 * 2) The indirect is being completely truncated, cancel_indirdep()
8096 * eliminated the real copy and placed the indirdep on the saved
8097 * copy. The indirdep and buf are discarded when this completes.
8098 * 3) The indirect was not in memory, we read a copy off of the disk
8099 * using the devvp and drop and invalidate the buffer when we're
8104 if (freework->fw_indir != NULL) {
8106 indirdep = freework->fw_indir;
8107 bp = indirdep->ir_savebp;
8108 if (bp == NULL || bp->b_blkno != dbn)
8109 panic("indir_trunc: Bad saved buf %p blkno %jd",
8111 } else if ((bp = incore(&freeblks->fb_devvp->v_bufobj, dbn)) != NULL) {
8113 * The lock prevents the buf dep list from changing and
8114 * indirects on devvp should only ever have one dependency.
8116 indirdep = WK_INDIRDEP(LIST_FIRST(&bp->b_dep));
8117 if (indirdep == NULL || (indirdep->ir_state & GOINGAWAY) == 0)
8118 panic("indir_trunc: Bad indirdep %p from buf %p",
8120 } else if (bread(freeblks->fb_devvp, dbn, (int)fs->fs_bsize,
8121 NOCRED, &bp) != 0) {
8126 /* Protects against a race with complete_trunc_indir(). */
8127 freework->fw_state &= ~INPROGRESS;
8129 * If we have an indirdep we need to enforce the truncation order
8130 * and discard it when it is complete.
8133 if (freework != TAILQ_FIRST(&indirdep->ir_trunc) &&
8134 !TAILQ_EMPTY(&indirdep->ir_trunc)) {
8136 * Add the complete truncate to the list on the
8137 * indirdep to enforce in-order processing.
8139 if (freework->fw_indir == NULL)
8140 TAILQ_INSERT_TAIL(&indirdep->ir_trunc,
8146 * If we're goingaway, free the indirdep. Otherwise it will
8147 * linger until the write completes.
8150 free_indirdep(indirdep);
8153 /* Initialize pointers depending on block size. */
8154 if (ump->um_fstype == UFS1) {
8155 bap1 = (ufs1_daddr_t *)bp->b_data;
8156 nb = bap1[freework->fw_off];
8160 bap2 = (ufs2_daddr_t *)bp->b_data;
8161 nb = bap2[freework->fw_off];
8165 level = lbn_level(lbn);
8166 needj = MOUNTEDSUJ(UFSTOVFS(ump)) != 0;
8167 lbnadd = lbn_offset(fs, level);
8168 nblocks = btodb(fs->fs_bsize);
8169 nfreework = freework;
8173 * Reclaim blocks. Traverses into nested indirect levels and
8174 * arranges for the current level to be freed when subordinates
8175 * are free when journaling.
8177 for (i = freework->fw_off; i < NINDIR(fs); i++, nb = nnb) {
8178 if (i != NINDIR(fs) - 1) {
8189 nlbn = (lbn + 1) - (i * lbnadd);
8191 nfreework = newfreework(ump, freeblks, freework,
8192 nlbn, nb, fs->fs_frag, 0, 0);
8195 indir_trunc(nfreework, fsbtodb(fs, nb), nlbn);
8197 struct freedep *freedep;
8200 * Attempt to aggregate freedep dependencies for
8201 * all blocks being released to the same CG.
8205 (nnb == 0 || (dtog(fs, nb) != dtog(fs, nnb)))) {
8206 freedep = newfreedep(freework);
8207 WORKLIST_INSERT_UNLOCKED(&wkhd,
8212 "indir_trunc: ino %d blkno %jd size %ld",
8213 freeblks->fb_inum, nb, fs->fs_bsize);
8214 ffs_blkfree(ump, fs, freeblks->fb_devvp, nb,
8215 fs->fs_bsize, freeblks->fb_inum,
8216 freeblks->fb_vtype, &wkhd);
8220 bp->b_flags |= B_INVAL | B_NOCACHE;
8225 freedblocks = (nblocks * cnt);
8227 freedblocks += nblocks;
8228 freeblks_free(ump, freeblks, freedblocks);
8230 * If we are journaling set up the ref counts and offset so this
8231 * indirect can be completed when its children are free.
8235 freework->fw_off = i;
8236 freework->fw_ref += freedeps;
8237 freework->fw_ref -= NINDIR(fs) + 1;
8239 freeblks->fb_cgwait += freedeps;
8240 if (freework->fw_ref == 0)
8241 freework_freeblock(freework);
8246 * If we're not journaling we can free the indirect now.
8248 dbn = dbtofsb(fs, dbn);
8250 "indir_trunc 2: ino %d blkno %jd size %ld",
8251 freeblks->fb_inum, dbn, fs->fs_bsize);
8252 ffs_blkfree(ump, fs, freeblks->fb_devvp, dbn, fs->fs_bsize,
8253 freeblks->fb_inum, freeblks->fb_vtype, NULL);
8254 /* Non SUJ softdep does single-threaded truncations. */
8255 if (freework->fw_blkno == dbn) {
8256 freework->fw_state |= ALLCOMPLETE;
8258 handle_written_freework(freework);
8265 * Cancel an allocindir when it is removed via truncation. When bp is not
8266 * NULL the indirect never appeared on disk and is scheduled to be freed
8267 * independently of the indir so we can more easily track journal work.
8270 cancel_allocindir(aip, bp, freeblks, trunc)
8271 struct allocindir *aip;
8273 struct freeblks *freeblks;
8276 struct indirdep *indirdep;
8277 struct freefrag *freefrag;
8278 struct newblk *newblk;
8280 newblk = (struct newblk *)aip;
8281 LIST_REMOVE(aip, ai_next);
8283 * We must eliminate the pointer in bp if it must be freed on its
8284 * own due to partial truncate or pending journal work.
8286 if (bp && (trunc || newblk->nb_jnewblk)) {
8288 * Clear the pointer and mark the aip to be freed
8289 * directly if it never existed on disk.
8291 aip->ai_state |= DELAYEDFREE;
8292 indirdep = aip->ai_indirdep;
8293 if (indirdep->ir_state & UFS1FMT)
8294 ((ufs1_daddr_t *)bp->b_data)[aip->ai_offset] = 0;
8296 ((ufs2_daddr_t *)bp->b_data)[aip->ai_offset] = 0;
8299 * When truncating the previous pointer will be freed via
8300 * savedbp. Eliminate the freefrag which would dup free.
8302 if (trunc && (freefrag = newblk->nb_freefrag) != NULL) {
8303 newblk->nb_freefrag = NULL;
8304 if (freefrag->ff_jdep)
8306 WK_JFREEFRAG(freefrag->ff_jdep));
8307 jwork_move(&freeblks->fb_jwork, &freefrag->ff_jwork);
8308 WORKITEM_FREE(freefrag, D_FREEFRAG);
8311 * If the journal hasn't been written the jnewblk must be passed
8312 * to the call to ffs_blkfree that reclaims the space. We accomplish
8313 * this by leaving the journal dependency on the newblk to be freed
8314 * when a freework is created in handle_workitem_freeblocks().
8316 cancel_newblk(newblk, NULL, &freeblks->fb_jwork);
8317 WORKLIST_INSERT(&freeblks->fb_freeworkhd, &newblk->nb_list);
8321 * Create the mkdir dependencies for . and .. in a new directory. Link them
8322 * in to a newdirblk so any subsequent additions are tracked properly. The
8323 * caller is responsible for adding the mkdir1 dependency to the journal
8324 * and updating id_mkdiradd. This function returns with the per-filesystem
8327 static struct mkdir *
8328 setup_newdir(dap, newinum, dinum, newdirbp, mkdirp)
8332 struct buf *newdirbp;
8333 struct mkdir **mkdirp;
8335 struct newblk *newblk;
8336 struct pagedep *pagedep;
8337 struct inodedep *inodedep;
8338 struct newdirblk *newdirblk;
8339 struct mkdir *mkdir1, *mkdir2;
8340 struct worklist *wk;
8341 struct jaddref *jaddref;
8342 struct ufsmount *ump;
8345 mp = dap->da_list.wk_mp;
8347 newdirblk = malloc(sizeof(struct newdirblk), M_NEWDIRBLK,
8349 workitem_alloc(&newdirblk->db_list, D_NEWDIRBLK, mp);
8350 LIST_INIT(&newdirblk->db_mkdir);
8351 mkdir1 = malloc(sizeof(struct mkdir), M_MKDIR, M_SOFTDEP_FLAGS);
8352 workitem_alloc(&mkdir1->md_list, D_MKDIR, mp);
8353 mkdir1->md_state = ATTACHED | MKDIR_BODY;
8354 mkdir1->md_diradd = dap;
8355 mkdir1->md_jaddref = NULL;
8356 mkdir2 = malloc(sizeof(struct mkdir), M_MKDIR, M_SOFTDEP_FLAGS);
8357 workitem_alloc(&mkdir2->md_list, D_MKDIR, mp);
8358 mkdir2->md_state = ATTACHED | MKDIR_PARENT;
8359 mkdir2->md_diradd = dap;
8360 mkdir2->md_jaddref = NULL;
8361 if (MOUNTEDSUJ(mp) == 0) {
8362 mkdir1->md_state |= DEPCOMPLETE;
8363 mkdir2->md_state |= DEPCOMPLETE;
8366 * Dependency on "." and ".." being written to disk.
8368 mkdir1->md_buf = newdirbp;
8369 ACQUIRE_LOCK(VFSTOUFS(mp));
8370 LIST_INSERT_HEAD(&ump->softdep_mkdirlisthd, mkdir1, md_mkdirs);
8372 * We must link the pagedep, allocdirect, and newdirblk for
8373 * the initial file page so the pointer to the new directory
8374 * is not written until the directory contents are live and
8375 * any subsequent additions are not marked live until the
8376 * block is reachable via the inode.
8378 if (pagedep_lookup(mp, newdirbp, newinum, 0, 0, &pagedep) == 0)
8379 panic("setup_newdir: lost pagedep");
8380 LIST_FOREACH(wk, &newdirbp->b_dep, wk_list)
8381 if (wk->wk_type == D_ALLOCDIRECT)
8384 panic("setup_newdir: lost allocdirect");
8385 if (pagedep->pd_state & NEWBLOCK)
8386 panic("setup_newdir: NEWBLOCK already set");
8387 newblk = WK_NEWBLK(wk);
8388 pagedep->pd_state |= NEWBLOCK;
8389 pagedep->pd_newdirblk = newdirblk;
8390 newdirblk->db_pagedep = pagedep;
8391 WORKLIST_INSERT(&newblk->nb_newdirblk, &newdirblk->db_list);
8392 WORKLIST_INSERT(&newdirblk->db_mkdir, &mkdir1->md_list);
8394 * Look up the inodedep for the parent directory so that we
8395 * can link mkdir2 into the pending dotdot jaddref or
8396 * the inode write if there is none. If the inode is
8397 * ALLCOMPLETE and no jaddref is present all dependencies have
8398 * been satisfied and mkdir2 can be freed.
8400 inodedep_lookup(mp, dinum, 0, &inodedep);
8401 if (MOUNTEDSUJ(mp)) {
8402 if (inodedep == NULL)
8403 panic("setup_newdir: Lost parent.");
8404 jaddref = (struct jaddref *)TAILQ_LAST(&inodedep->id_inoreflst,
8406 KASSERT(jaddref != NULL && jaddref->ja_parent == newinum &&
8407 (jaddref->ja_state & MKDIR_PARENT),
8408 ("setup_newdir: bad dotdot jaddref %p", jaddref));
8409 LIST_INSERT_HEAD(&ump->softdep_mkdirlisthd, mkdir2, md_mkdirs);
8410 mkdir2->md_jaddref = jaddref;
8411 jaddref->ja_mkdir = mkdir2;
8412 } else if (inodedep == NULL ||
8413 (inodedep->id_state & ALLCOMPLETE) == ALLCOMPLETE) {
8414 dap->da_state &= ~MKDIR_PARENT;
8415 WORKITEM_FREE(mkdir2, D_MKDIR);
8418 LIST_INSERT_HEAD(&ump->softdep_mkdirlisthd, mkdir2, md_mkdirs);
8419 WORKLIST_INSERT(&inodedep->id_bufwait, &mkdir2->md_list);
8427 * Directory entry addition dependencies.
8429 * When adding a new directory entry, the inode (with its incremented link
8430 * count) must be written to disk before the directory entry's pointer to it.
8431 * Also, if the inode is newly allocated, the corresponding freemap must be
8432 * updated (on disk) before the directory entry's pointer. These requirements
8433 * are met via undo/redo on the directory entry's pointer, which consists
8434 * simply of the inode number.
8436 * As directory entries are added and deleted, the free space within a
8437 * directory block can become fragmented. The ufs filesystem will compact
8438 * a fragmented directory block to make space for a new entry. When this
8439 * occurs, the offsets of previously added entries change. Any "diradd"
8440 * dependency structures corresponding to these entries must be updated with
8445 * This routine is called after the in-memory inode's link
8446 * count has been incremented, but before the directory entry's
8447 * pointer to the inode has been set.
8450 softdep_setup_directory_add(bp, dp, diroffset, newinum, newdirbp, isnewblk)
8451 struct buf *bp; /* buffer containing directory block */
8452 struct inode *dp; /* inode for directory */
8453 off_t diroffset; /* offset of new entry in directory */
8454 ino_t newinum; /* inode referenced by new directory entry */
8455 struct buf *newdirbp; /* non-NULL => contents of new mkdir */
8456 int isnewblk; /* entry is in a newly allocated block */
8458 int offset; /* offset of new entry within directory block */
8459 ufs_lbn_t lbn; /* block in directory containing new entry */
8462 struct newblk *newblk;
8463 struct pagedep *pagedep;
8464 struct inodedep *inodedep;
8465 struct newdirblk *newdirblk;
8466 struct mkdir *mkdir1, *mkdir2;
8467 struct jaddref *jaddref;
8468 struct ufsmount *ump;
8474 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
8475 ("softdep_setup_directory_add called on non-softdep filesystem"));
8477 * Whiteouts have no dependencies.
8479 if (newinum == WINO) {
8480 if (newdirbp != NULL)
8485 mkdir1 = mkdir2 = NULL;
8487 lbn = lblkno(fs, diroffset);
8488 offset = blkoff(fs, diroffset);
8489 dap = malloc(sizeof(struct diradd), M_DIRADD,
8490 M_SOFTDEP_FLAGS|M_ZERO);
8491 workitem_alloc(&dap->da_list, D_DIRADD, mp);
8492 dap->da_offset = offset;
8493 dap->da_newinum = newinum;
8494 dap->da_state = ATTACHED;
8495 LIST_INIT(&dap->da_jwork);
8496 isindir = bp->b_lblkno >= NDADDR;
8499 (isindir ? blkoff(fs, diroffset) : fragoff(fs, diroffset)) == 0) {
8500 newdirblk = malloc(sizeof(struct newdirblk),
8501 M_NEWDIRBLK, M_SOFTDEP_FLAGS);
8502 workitem_alloc(&newdirblk->db_list, D_NEWDIRBLK, mp);
8503 LIST_INIT(&newdirblk->db_mkdir);
8506 * If we're creating a new directory setup the dependencies and set
8507 * the dap state to wait for them. Otherwise it's COMPLETE and
8510 if (newdirbp == NULL) {
8511 dap->da_state |= DEPCOMPLETE;
8514 dap->da_state |= MKDIR_BODY | MKDIR_PARENT;
8515 mkdir1 = setup_newdir(dap, newinum, dp->i_number, newdirbp,
8519 * Link into parent directory pagedep to await its being written.
8521 pagedep_lookup(mp, bp, dp->i_number, lbn, DEPALLOC, &pagedep);
8523 if (diradd_lookup(pagedep, offset) != NULL)
8524 panic("softdep_setup_directory_add: %p already at off %d\n",
8525 diradd_lookup(pagedep, offset), offset);
8527 dap->da_pagedep = pagedep;
8528 LIST_INSERT_HEAD(&pagedep->pd_diraddhd[DIRADDHASH(offset)], dap,
8530 inodedep_lookup(mp, newinum, DEPALLOC, &inodedep);
8532 * If we're journaling, link the diradd into the jaddref so it
8533 * may be completed after the journal entry is written. Otherwise,
8534 * link the diradd into its inodedep. If the inode is not yet
8535 * written place it on the bufwait list, otherwise do the post-inode
8536 * write processing to put it on the id_pendinghd list.
8538 if (MOUNTEDSUJ(mp)) {
8539 jaddref = (struct jaddref *)TAILQ_LAST(&inodedep->id_inoreflst,
8541 KASSERT(jaddref != NULL && jaddref->ja_parent == dp->i_number,
8542 ("softdep_setup_directory_add: bad jaddref %p", jaddref));
8543 jaddref->ja_diroff = diroffset;
8544 jaddref->ja_diradd = dap;
8545 add_to_journal(&jaddref->ja_list);
8546 } else if ((inodedep->id_state & ALLCOMPLETE) == ALLCOMPLETE)
8547 diradd_inode_written(dap, inodedep);
8549 WORKLIST_INSERT(&inodedep->id_bufwait, &dap->da_list);
8551 * Add the journal entries for . and .. links now that the primary
8554 if (mkdir1 != NULL && MOUNTEDSUJ(mp)) {
8555 jaddref = (struct jaddref *)TAILQ_PREV(&jaddref->ja_ref,
8556 inoreflst, if_deps);
8557 KASSERT(jaddref != NULL &&
8558 jaddref->ja_ino == jaddref->ja_parent &&
8559 (jaddref->ja_state & MKDIR_BODY),
8560 ("softdep_setup_directory_add: bad dot jaddref %p",
8562 mkdir1->md_jaddref = jaddref;
8563 jaddref->ja_mkdir = mkdir1;
8565 * It is important that the dotdot journal entry
8566 * is added prior to the dot entry since dot writes
8567 * both the dot and dotdot links. These both must
8568 * be added after the primary link for the journal
8569 * to remain consistent.
8571 add_to_journal(&mkdir2->md_jaddref->ja_list);
8572 add_to_journal(&jaddref->ja_list);
8575 * If we are adding a new directory remember this diradd so that if
8576 * we rename it we can keep the dot and dotdot dependencies. If
8577 * we are adding a new name for an inode that has a mkdiradd we
8578 * must be in rename and we have to move the dot and dotdot
8579 * dependencies to this new name. The old name is being orphaned
8582 if (mkdir1 != NULL) {
8583 if (inodedep->id_mkdiradd != NULL)
8584 panic("softdep_setup_directory_add: Existing mkdir");
8585 inodedep->id_mkdiradd = dap;
8586 } else if (inodedep->id_mkdiradd)
8587 merge_diradd(inodedep, dap);
8588 if (newdirblk != NULL) {
8590 * There is nothing to do if we are already tracking
8593 if ((pagedep->pd_state & NEWBLOCK) != 0) {
8594 WORKITEM_FREE(newdirblk, D_NEWDIRBLK);
8598 if (newblk_lookup(mp, dbtofsb(fs, bp->b_blkno), 0, &newblk)
8600 panic("softdep_setup_directory_add: lost entry");
8601 WORKLIST_INSERT(&newblk->nb_newdirblk, &newdirblk->db_list);
8602 pagedep->pd_state |= NEWBLOCK;
8603 pagedep->pd_newdirblk = newdirblk;
8604 newdirblk->db_pagedep = pagedep;
8607 * If we extended into an indirect signal direnter to sync.
8618 * This procedure is called to change the offset of a directory
8619 * entry when compacting a directory block which must be owned
8620 * exclusively by the caller. Note that the actual entry movement
8621 * must be done in this procedure to ensure that no I/O completions
8622 * occur while the move is in progress.
8625 softdep_change_directoryentry_offset(bp, dp, base, oldloc, newloc, entrysize)
8626 struct buf *bp; /* Buffer holding directory block. */
8627 struct inode *dp; /* inode for directory */
8628 caddr_t base; /* address of dp->i_offset */
8629 caddr_t oldloc; /* address of old directory location */
8630 caddr_t newloc; /* address of new directory location */
8631 int entrysize; /* size of directory entry */
8633 int offset, oldoffset, newoffset;
8634 struct pagedep *pagedep;
8635 struct jmvref *jmvref;
8639 struct ufsmount *ump;
8645 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
8646 ("softdep_change_directoryentry_offset called on "
8647 "non-softdep filesystem"));
8648 de = (struct direct *)oldloc;
8652 * Moves are always journaled as it would be too complex to
8653 * determine if any affected adds or removes are present in the
8656 if (MOUNTEDSUJ(mp)) {
8658 jmvref = newjmvref(dp, de->d_ino,
8659 dp->i_offset + (oldloc - base),
8660 dp->i_offset + (newloc - base));
8662 lbn = lblkno(ump->um_fs, dp->i_offset);
8663 offset = blkoff(ump->um_fs, dp->i_offset);
8664 oldoffset = offset + (oldloc - base);
8665 newoffset = offset + (newloc - base);
8667 if (pagedep_lookup(mp, bp, dp->i_number, lbn, flags, &pagedep) == 0)
8669 dap = diradd_lookup(pagedep, oldoffset);
8671 dap->da_offset = newoffset;
8672 newoffset = DIRADDHASH(newoffset);
8673 oldoffset = DIRADDHASH(oldoffset);
8674 if ((dap->da_state & ALLCOMPLETE) != ALLCOMPLETE &&
8675 newoffset != oldoffset) {
8676 LIST_REMOVE(dap, da_pdlist);
8677 LIST_INSERT_HEAD(&pagedep->pd_diraddhd[newoffset],
8683 jmvref->jm_pagedep = pagedep;
8684 LIST_INSERT_HEAD(&pagedep->pd_jmvrefhd, jmvref, jm_deps);
8685 add_to_journal(&jmvref->jm_list);
8687 bcopy(oldloc, newloc, entrysize);
8692 * Move the mkdir dependencies and journal work from one diradd to another
8693 * when renaming a directory. The new name must depend on the mkdir deps
8694 * completing as the old name did. Directories can only have one valid link
8695 * at a time so one must be canonical.
8698 merge_diradd(inodedep, newdap)
8699 struct inodedep *inodedep;
8700 struct diradd *newdap;
8702 struct diradd *olddap;
8703 struct mkdir *mkdir, *nextmd;
8704 struct ufsmount *ump;
8707 olddap = inodedep->id_mkdiradd;
8708 inodedep->id_mkdiradd = newdap;
8709 if ((olddap->da_state & (MKDIR_PARENT | MKDIR_BODY)) != 0) {
8710 newdap->da_state &= ~DEPCOMPLETE;
8711 ump = VFSTOUFS(inodedep->id_list.wk_mp);
8712 for (mkdir = LIST_FIRST(&ump->softdep_mkdirlisthd); mkdir;
8714 nextmd = LIST_NEXT(mkdir, md_mkdirs);
8715 if (mkdir->md_diradd != olddap)
8717 mkdir->md_diradd = newdap;
8718 state = mkdir->md_state & (MKDIR_PARENT | MKDIR_BODY);
8719 newdap->da_state |= state;
8720 olddap->da_state &= ~state;
8721 if ((olddap->da_state &
8722 (MKDIR_PARENT | MKDIR_BODY)) == 0)
8725 if ((olddap->da_state & (MKDIR_PARENT | MKDIR_BODY)) != 0)
8726 panic("merge_diradd: unfound ref");
8729 * Any mkdir related journal items are not safe to be freed until
8730 * the new name is stable.
8732 jwork_move(&newdap->da_jwork, &olddap->da_jwork);
8733 olddap->da_state |= DEPCOMPLETE;
8734 complete_diradd(olddap);
8738 * Move the diradd to the pending list when all diradd dependencies are
8742 complete_diradd(dap)
8745 struct pagedep *pagedep;
8747 if ((dap->da_state & ALLCOMPLETE) == ALLCOMPLETE) {
8748 if (dap->da_state & DIRCHG)
8749 pagedep = dap->da_previous->dm_pagedep;
8751 pagedep = dap->da_pagedep;
8752 LIST_REMOVE(dap, da_pdlist);
8753 LIST_INSERT_HEAD(&pagedep->pd_pendinghd, dap, da_pdlist);
8758 * Cancel a diradd when a dirrem overlaps with it. We must cancel the journal
8759 * add entries and conditonally journal the remove.
8762 cancel_diradd(dap, dirrem, jremref, dotremref, dotdotremref)
8764 struct dirrem *dirrem;
8765 struct jremref *jremref;
8766 struct jremref *dotremref;
8767 struct jremref *dotdotremref;
8769 struct inodedep *inodedep;
8770 struct jaddref *jaddref;
8771 struct inoref *inoref;
8772 struct ufsmount *ump;
8773 struct mkdir *mkdir;
8776 * If no remove references were allocated we're on a non-journaled
8777 * filesystem and can skip the cancel step.
8779 if (jremref == NULL) {
8780 free_diradd(dap, NULL);
8784 * Cancel the primary name an free it if it does not require
8787 if (inodedep_lookup(dap->da_list.wk_mp, dap->da_newinum,
8788 0, &inodedep) != 0) {
8789 /* Abort the addref that reference this diradd. */
8790 TAILQ_FOREACH(inoref, &inodedep->id_inoreflst, if_deps) {
8791 if (inoref->if_list.wk_type != D_JADDREF)
8793 jaddref = (struct jaddref *)inoref;
8794 if (jaddref->ja_diradd != dap)
8796 if (cancel_jaddref(jaddref, inodedep,
8797 &dirrem->dm_jwork) == 0) {
8798 free_jremref(jremref);
8805 * Cancel subordinate names and free them if they do not require
8808 if ((dap->da_state & (MKDIR_PARENT | MKDIR_BODY)) != 0) {
8809 ump = VFSTOUFS(dap->da_list.wk_mp);
8810 LIST_FOREACH(mkdir, &ump->softdep_mkdirlisthd, md_mkdirs) {
8811 if (mkdir->md_diradd != dap)
8813 if ((jaddref = mkdir->md_jaddref) == NULL)
8815 mkdir->md_jaddref = NULL;
8816 if (mkdir->md_state & MKDIR_PARENT) {
8817 if (cancel_jaddref(jaddref, NULL,
8818 &dirrem->dm_jwork) == 0) {
8819 free_jremref(dotdotremref);
8820 dotdotremref = NULL;
8823 if (cancel_jaddref(jaddref, inodedep,
8824 &dirrem->dm_jwork) == 0) {
8825 free_jremref(dotremref);
8833 journal_jremref(dirrem, jremref, inodedep);
8835 journal_jremref(dirrem, dotremref, inodedep);
8837 journal_jremref(dirrem, dotdotremref, NULL);
8838 jwork_move(&dirrem->dm_jwork, &dap->da_jwork);
8839 free_diradd(dap, &dirrem->dm_jwork);
8843 * Free a diradd dependency structure. This routine must be called
8844 * with splbio interrupts blocked.
8847 free_diradd(dap, wkhd)
8849 struct workhead *wkhd;
8851 struct dirrem *dirrem;
8852 struct pagedep *pagedep;
8853 struct inodedep *inodedep;
8854 struct mkdir *mkdir, *nextmd;
8855 struct ufsmount *ump;
8857 ump = VFSTOUFS(dap->da_list.wk_mp);
8859 LIST_REMOVE(dap, da_pdlist);
8860 if (dap->da_state & ONWORKLIST)
8861 WORKLIST_REMOVE(&dap->da_list);
8862 if ((dap->da_state & DIRCHG) == 0) {
8863 pagedep = dap->da_pagedep;
8865 dirrem = dap->da_previous;
8866 pagedep = dirrem->dm_pagedep;
8867 dirrem->dm_dirinum = pagedep->pd_ino;
8868 dirrem->dm_state |= COMPLETE;
8869 if (LIST_EMPTY(&dirrem->dm_jremrefhd))
8870 add_to_worklist(&dirrem->dm_list, 0);
8872 if (inodedep_lookup(pagedep->pd_list.wk_mp, dap->da_newinum,
8874 if (inodedep->id_mkdiradd == dap)
8875 inodedep->id_mkdiradd = NULL;
8876 if ((dap->da_state & (MKDIR_PARENT | MKDIR_BODY)) != 0) {
8877 for (mkdir = LIST_FIRST(&ump->softdep_mkdirlisthd); mkdir;
8879 nextmd = LIST_NEXT(mkdir, md_mkdirs);
8880 if (mkdir->md_diradd != dap)
8883 ~(mkdir->md_state & (MKDIR_PARENT | MKDIR_BODY));
8884 LIST_REMOVE(mkdir, md_mkdirs);
8885 if (mkdir->md_state & ONWORKLIST)
8886 WORKLIST_REMOVE(&mkdir->md_list);
8887 if (mkdir->md_jaddref != NULL)
8888 panic("free_diradd: Unexpected jaddref");
8889 WORKITEM_FREE(mkdir, D_MKDIR);
8890 if ((dap->da_state & (MKDIR_PARENT | MKDIR_BODY)) == 0)
8893 if ((dap->da_state & (MKDIR_PARENT | MKDIR_BODY)) != 0)
8894 panic("free_diradd: unfound ref");
8897 free_inodedep(inodedep);
8899 * Free any journal segments waiting for the directory write.
8901 handle_jwork(&dap->da_jwork);
8902 WORKITEM_FREE(dap, D_DIRADD);
8906 * Directory entry removal dependencies.
8908 * When removing a directory entry, the entry's inode pointer must be
8909 * zero'ed on disk before the corresponding inode's link count is decremented
8910 * (possibly freeing the inode for re-use). This dependency is handled by
8911 * updating the directory entry but delaying the inode count reduction until
8912 * after the directory block has been written to disk. After this point, the
8913 * inode count can be decremented whenever it is convenient.
8917 * This routine should be called immediately after removing
8918 * a directory entry. The inode's link count should not be
8919 * decremented by the calling procedure -- the soft updates
8920 * code will do this task when it is safe.
8923 softdep_setup_remove(bp, dp, ip, isrmdir)
8924 struct buf *bp; /* buffer containing directory block */
8925 struct inode *dp; /* inode for the directory being modified */
8926 struct inode *ip; /* inode for directory entry being removed */
8927 int isrmdir; /* indicates if doing RMDIR */
8929 struct dirrem *dirrem, *prevdirrem;
8930 struct inodedep *inodedep;
8931 struct ufsmount *ump;
8935 KASSERT(MOUNTEDSOFTDEP(UFSTOVFS(ump)) != 0,
8936 ("softdep_setup_remove called on non-softdep filesystem"));
8938 * Allocate a new dirrem if appropriate and ACQUIRE_LOCK. We want
8939 * newdirrem() to setup the full directory remove which requires
8942 dirrem = newdirrem(bp, dp, ip, isrmdir, &prevdirrem);
8944 * Add the dirrem to the inodedep's pending remove list for quick
8947 if (inodedep_lookup(UFSTOVFS(ump), ip->i_number, 0, &inodedep) == 0)
8948 panic("softdep_setup_remove: Lost inodedep.");
8949 KASSERT((inodedep->id_state & UNLINKED) == 0, ("inode unlinked"));
8950 dirrem->dm_state |= ONDEPLIST;
8951 LIST_INSERT_HEAD(&inodedep->id_dirremhd, dirrem, dm_inonext);
8954 * If the COMPLETE flag is clear, then there were no active
8955 * entries and we want to roll back to a zeroed entry until
8956 * the new inode is committed to disk. If the COMPLETE flag is
8957 * set then we have deleted an entry that never made it to
8958 * disk. If the entry we deleted resulted from a name change,
8959 * then the old name still resides on disk. We cannot delete
8960 * its inode (returned to us in prevdirrem) until the zeroed
8961 * directory entry gets to disk. The new inode has never been
8962 * referenced on the disk, so can be deleted immediately.
8964 if ((dirrem->dm_state & COMPLETE) == 0) {
8965 LIST_INSERT_HEAD(&dirrem->dm_pagedep->pd_dirremhd, dirrem,
8969 if (prevdirrem != NULL)
8970 LIST_INSERT_HEAD(&dirrem->dm_pagedep->pd_dirremhd,
8971 prevdirrem, dm_next);
8972 dirrem->dm_dirinum = dirrem->dm_pagedep->pd_ino;
8973 direct = LIST_EMPTY(&dirrem->dm_jremrefhd);
8976 handle_workitem_remove(dirrem, 0);
8981 * Check for an entry matching 'offset' on both the pd_dirraddhd list and the
8982 * pd_pendinghd list of a pagedep.
8984 static struct diradd *
8985 diradd_lookup(pagedep, offset)
8986 struct pagedep *pagedep;
8991 LIST_FOREACH(dap, &pagedep->pd_diraddhd[DIRADDHASH(offset)], da_pdlist)
8992 if (dap->da_offset == offset)
8994 LIST_FOREACH(dap, &pagedep->pd_pendinghd, da_pdlist)
8995 if (dap->da_offset == offset)
9001 * Search for a .. diradd dependency in a directory that is being removed.
9002 * If the directory was renamed to a new parent we have a diradd rather
9003 * than a mkdir for the .. entry. We need to cancel it now before
9004 * it is found in truncate().
9006 static struct jremref *
9007 cancel_diradd_dotdot(ip, dirrem, jremref)
9009 struct dirrem *dirrem;
9010 struct jremref *jremref;
9012 struct pagedep *pagedep;
9014 struct worklist *wk;
9016 if (pagedep_lookup(ITOVFS(ip), NULL, ip->i_number, 0, 0, &pagedep) == 0)
9018 dap = diradd_lookup(pagedep, DOTDOT_OFFSET);
9021 cancel_diradd(dap, dirrem, jremref, NULL, NULL);
9023 * Mark any journal work as belonging to the parent so it is freed
9024 * with the .. reference.
9026 LIST_FOREACH(wk, &dirrem->dm_jwork, wk_list)
9027 wk->wk_state |= MKDIR_PARENT;
9032 * Cancel the MKDIR_PARENT mkdir component of a diradd when we're going to
9033 * replace it with a dirrem/diradd pair as a result of re-parenting a
9034 * directory. This ensures that we don't simultaneously have a mkdir and
9035 * a diradd for the same .. entry.
9037 static struct jremref *
9038 cancel_mkdir_dotdot(ip, dirrem, jremref)
9040 struct dirrem *dirrem;
9041 struct jremref *jremref;
9043 struct inodedep *inodedep;
9044 struct jaddref *jaddref;
9045 struct ufsmount *ump;
9046 struct mkdir *mkdir;
9051 if (inodedep_lookup(mp, ip->i_number, 0, &inodedep) == 0)
9053 dap = inodedep->id_mkdiradd;
9054 if (dap == NULL || (dap->da_state & MKDIR_PARENT) == 0)
9056 ump = VFSTOUFS(inodedep->id_list.wk_mp);
9057 for (mkdir = LIST_FIRST(&ump->softdep_mkdirlisthd); mkdir;
9058 mkdir = LIST_NEXT(mkdir, md_mkdirs))
9059 if (mkdir->md_diradd == dap && mkdir->md_state & MKDIR_PARENT)
9062 panic("cancel_mkdir_dotdot: Unable to find mkdir\n");
9063 if ((jaddref = mkdir->md_jaddref) != NULL) {
9064 mkdir->md_jaddref = NULL;
9065 jaddref->ja_state &= ~MKDIR_PARENT;
9066 if (inodedep_lookup(mp, jaddref->ja_ino, 0, &inodedep) == 0)
9067 panic("cancel_mkdir_dotdot: Lost parent inodedep");
9068 if (cancel_jaddref(jaddref, inodedep, &dirrem->dm_jwork)) {
9069 journal_jremref(dirrem, jremref, inodedep);
9073 if (mkdir->md_state & ONWORKLIST)
9074 WORKLIST_REMOVE(&mkdir->md_list);
9075 mkdir->md_state |= ALLCOMPLETE;
9076 complete_mkdir(mkdir);
9081 journal_jremref(dirrem, jremref, inodedep)
9082 struct dirrem *dirrem;
9083 struct jremref *jremref;
9084 struct inodedep *inodedep;
9087 if (inodedep == NULL)
9088 if (inodedep_lookup(jremref->jr_list.wk_mp,
9089 jremref->jr_ref.if_ino, 0, &inodedep) == 0)
9090 panic("journal_jremref: Lost inodedep");
9091 LIST_INSERT_HEAD(&dirrem->dm_jremrefhd, jremref, jr_deps);
9092 TAILQ_INSERT_TAIL(&inodedep->id_inoreflst, &jremref->jr_ref, if_deps);
9093 add_to_journal(&jremref->jr_list);
9097 dirrem_journal(dirrem, jremref, dotremref, dotdotremref)
9098 struct dirrem *dirrem;
9099 struct jremref *jremref;
9100 struct jremref *dotremref;
9101 struct jremref *dotdotremref;
9103 struct inodedep *inodedep;
9106 if (inodedep_lookup(jremref->jr_list.wk_mp, jremref->jr_ref.if_ino, 0,
9108 panic("dirrem_journal: Lost inodedep");
9109 journal_jremref(dirrem, jremref, inodedep);
9111 journal_jremref(dirrem, dotremref, inodedep);
9113 journal_jremref(dirrem, dotdotremref, NULL);
9117 * Allocate a new dirrem if appropriate and return it along with
9118 * its associated pagedep. Called without a lock, returns with lock.
9120 static struct dirrem *
9121 newdirrem(bp, dp, ip, isrmdir, prevdirremp)
9122 struct buf *bp; /* buffer containing directory block */
9123 struct inode *dp; /* inode for the directory being modified */
9124 struct inode *ip; /* inode for directory entry being removed */
9125 int isrmdir; /* indicates if doing RMDIR */
9126 struct dirrem **prevdirremp; /* previously referenced inode, if any */
9131 struct dirrem *dirrem;
9132 struct pagedep *pagedep;
9133 struct jremref *jremref;
9134 struct jremref *dotremref;
9135 struct jremref *dotdotremref;
9137 struct ufsmount *ump;
9140 * Whiteouts have no deletion dependencies.
9143 panic("newdirrem: whiteout");
9148 * If the system is over its limit and our filesystem is
9149 * responsible for more than our share of that usage and
9150 * we are not a snapshot, request some inodedep cleanup.
9151 * Limiting the number of dirrem structures will also limit
9152 * the number of freefile and freeblks structures.
9155 if (!IS_SNAPSHOT(ip) && softdep_excess_items(ump, D_DIRREM))
9156 schedule_cleanup(UFSTOVFS(ump));
9159 dirrem = malloc(sizeof(struct dirrem), M_DIRREM, M_SOFTDEP_FLAGS |
9161 workitem_alloc(&dirrem->dm_list, D_DIRREM, dvp->v_mount);
9162 LIST_INIT(&dirrem->dm_jremrefhd);
9163 LIST_INIT(&dirrem->dm_jwork);
9164 dirrem->dm_state = isrmdir ? RMDIR : 0;
9165 dirrem->dm_oldinum = ip->i_number;
9166 *prevdirremp = NULL;
9168 * Allocate remove reference structures to track journal write
9169 * dependencies. We will always have one for the link and
9170 * when doing directories we will always have one more for dot.
9171 * When renaming a directory we skip the dotdot link change so
9172 * this is not needed.
9174 jremref = dotremref = dotdotremref = NULL;
9175 if (DOINGSUJ(dvp)) {
9177 jremref = newjremref(dirrem, dp, ip, dp->i_offset,
9178 ip->i_effnlink + 2);
9179 dotremref = newjremref(dirrem, ip, ip, DOT_OFFSET,
9180 ip->i_effnlink + 1);
9181 dotdotremref = newjremref(dirrem, ip, dp, DOTDOT_OFFSET,
9182 dp->i_effnlink + 1);
9183 dotdotremref->jr_state |= MKDIR_PARENT;
9185 jremref = newjremref(dirrem, dp, ip, dp->i_offset,
9186 ip->i_effnlink + 1);
9189 lbn = lblkno(ump->um_fs, dp->i_offset);
9190 offset = blkoff(ump->um_fs, dp->i_offset);
9191 pagedep_lookup(UFSTOVFS(ump), bp, dp->i_number, lbn, DEPALLOC,
9193 dirrem->dm_pagedep = pagedep;
9194 dirrem->dm_offset = offset;
9196 * If we're renaming a .. link to a new directory, cancel any
9197 * existing MKDIR_PARENT mkdir. If it has already been canceled
9198 * the jremref is preserved for any potential diradd in this
9199 * location. This can not coincide with a rmdir.
9201 if (dp->i_offset == DOTDOT_OFFSET) {
9203 panic("newdirrem: .. directory change during remove?");
9204 jremref = cancel_mkdir_dotdot(dp, dirrem, jremref);
9207 * If we're removing a directory search for the .. dependency now and
9208 * cancel it. Any pending journal work will be added to the dirrem
9209 * to be completed when the workitem remove completes.
9212 dotdotremref = cancel_diradd_dotdot(ip, dirrem, dotdotremref);
9214 * Check for a diradd dependency for the same directory entry.
9215 * If present, then both dependencies become obsolete and can
9218 dap = diradd_lookup(pagedep, offset);
9221 * Link the jremref structures into the dirrem so they are
9222 * written prior to the pagedep.
9225 dirrem_journal(dirrem, jremref, dotremref,
9230 * Must be ATTACHED at this point.
9232 if ((dap->da_state & ATTACHED) == 0)
9233 panic("newdirrem: not ATTACHED");
9234 if (dap->da_newinum != ip->i_number)
9235 panic("newdirrem: inum %ju should be %ju",
9236 (uintmax_t)ip->i_number, (uintmax_t)dap->da_newinum);
9238 * If we are deleting a changed name that never made it to disk,
9239 * then return the dirrem describing the previous inode (which
9240 * represents the inode currently referenced from this entry on disk).
9242 if ((dap->da_state & DIRCHG) != 0) {
9243 *prevdirremp = dap->da_previous;
9244 dap->da_state &= ~DIRCHG;
9245 dap->da_pagedep = pagedep;
9248 * We are deleting an entry that never made it to disk.
9249 * Mark it COMPLETE so we can delete its inode immediately.
9251 dirrem->dm_state |= COMPLETE;
9252 cancel_diradd(dap, dirrem, jremref, dotremref, dotdotremref);
9255 struct worklist *wk;
9257 LIST_FOREACH(wk, &dirrem->dm_jwork, wk_list)
9258 if (wk->wk_state & (MKDIR_BODY | MKDIR_PARENT))
9259 panic("bad wk %p (0x%X)\n", wk, wk->wk_state);
9267 * Directory entry change dependencies.
9269 * Changing an existing directory entry requires that an add operation
9270 * be completed first followed by a deletion. The semantics for the addition
9271 * are identical to the description of adding a new entry above except
9272 * that the rollback is to the old inode number rather than zero. Once
9273 * the addition dependency is completed, the removal is done as described
9274 * in the removal routine above.
9278 * This routine should be called immediately after changing
9279 * a directory entry. The inode's link count should not be
9280 * decremented by the calling procedure -- the soft updates
9281 * code will perform this task when it is safe.
9284 softdep_setup_directory_change(bp, dp, ip, newinum, isrmdir)
9285 struct buf *bp; /* buffer containing directory block */
9286 struct inode *dp; /* inode for the directory being modified */
9287 struct inode *ip; /* inode for directory entry being removed */
9288 ino_t newinum; /* new inode number for changed entry */
9289 int isrmdir; /* indicates if doing RMDIR */
9292 struct diradd *dap = NULL;
9293 struct dirrem *dirrem, *prevdirrem;
9294 struct pagedep *pagedep;
9295 struct inodedep *inodedep;
9296 struct jaddref *jaddref;
9298 struct ufsmount *ump;
9302 offset = blkoff(ump->um_fs, dp->i_offset);
9303 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
9304 ("softdep_setup_directory_change called on non-softdep filesystem"));
9307 * Whiteouts do not need diradd dependencies.
9309 if (newinum != WINO) {
9310 dap = malloc(sizeof(struct diradd),
9311 M_DIRADD, M_SOFTDEP_FLAGS|M_ZERO);
9312 workitem_alloc(&dap->da_list, D_DIRADD, mp);
9313 dap->da_state = DIRCHG | ATTACHED | DEPCOMPLETE;
9314 dap->da_offset = offset;
9315 dap->da_newinum = newinum;
9316 LIST_INIT(&dap->da_jwork);
9320 * Allocate a new dirrem and ACQUIRE_LOCK.
9322 dirrem = newdirrem(bp, dp, ip, isrmdir, &prevdirrem);
9323 pagedep = dirrem->dm_pagedep;
9325 * The possible values for isrmdir:
9326 * 0 - non-directory file rename
9327 * 1 - directory rename within same directory
9328 * inum - directory rename to new directory of given inode number
9329 * When renaming to a new directory, we are both deleting and
9330 * creating a new directory entry, so the link count on the new
9331 * directory should not change. Thus we do not need the followup
9332 * dirrem which is usually done in handle_workitem_remove. We set
9333 * the DIRCHG flag to tell handle_workitem_remove to skip the
9337 dirrem->dm_state |= DIRCHG;
9340 * Whiteouts have no additional dependencies,
9341 * so just put the dirrem on the correct list.
9343 if (newinum == WINO) {
9344 if ((dirrem->dm_state & COMPLETE) == 0) {
9345 LIST_INSERT_HEAD(&pagedep->pd_dirremhd, dirrem,
9348 dirrem->dm_dirinum = pagedep->pd_ino;
9349 if (LIST_EMPTY(&dirrem->dm_jremrefhd))
9350 add_to_worklist(&dirrem->dm_list, 0);
9356 * Add the dirrem to the inodedep's pending remove list for quick
9357 * discovery later. A valid nlinkdelta ensures that this lookup
9360 if (inodedep_lookup(mp, ip->i_number, 0, &inodedep) == 0)
9361 panic("softdep_setup_directory_change: Lost inodedep.");
9362 dirrem->dm_state |= ONDEPLIST;
9363 LIST_INSERT_HEAD(&inodedep->id_dirremhd, dirrem, dm_inonext);
9366 * If the COMPLETE flag is clear, then there were no active
9367 * entries and we want to roll back to the previous inode until
9368 * the new inode is committed to disk. If the COMPLETE flag is
9369 * set, then we have deleted an entry that never made it to disk.
9370 * If the entry we deleted resulted from a name change, then the old
9371 * inode reference still resides on disk. Any rollback that we do
9372 * needs to be to that old inode (returned to us in prevdirrem). If
9373 * the entry we deleted resulted from a create, then there is
9374 * no entry on the disk, so we want to roll back to zero rather
9375 * than the uncommitted inode. In either of the COMPLETE cases we
9376 * want to immediately free the unwritten and unreferenced inode.
9378 if ((dirrem->dm_state & COMPLETE) == 0) {
9379 dap->da_previous = dirrem;
9381 if (prevdirrem != NULL) {
9382 dap->da_previous = prevdirrem;
9384 dap->da_state &= ~DIRCHG;
9385 dap->da_pagedep = pagedep;
9387 dirrem->dm_dirinum = pagedep->pd_ino;
9388 if (LIST_EMPTY(&dirrem->dm_jremrefhd))
9389 add_to_worklist(&dirrem->dm_list, 0);
9392 * Lookup the jaddref for this journal entry. We must finish
9393 * initializing it and make the diradd write dependent on it.
9394 * If we're not journaling, put it on the id_bufwait list if the
9395 * inode is not yet written. If it is written, do the post-inode
9396 * write processing to put it on the id_pendinghd list.
9398 inodedep_lookup(mp, newinum, DEPALLOC, &inodedep);
9399 if (MOUNTEDSUJ(mp)) {
9400 jaddref = (struct jaddref *)TAILQ_LAST(&inodedep->id_inoreflst,
9402 KASSERT(jaddref != NULL && jaddref->ja_parent == dp->i_number,
9403 ("softdep_setup_directory_change: bad jaddref %p",
9405 jaddref->ja_diroff = dp->i_offset;
9406 jaddref->ja_diradd = dap;
9407 LIST_INSERT_HEAD(&pagedep->pd_diraddhd[DIRADDHASH(offset)],
9409 add_to_journal(&jaddref->ja_list);
9410 } else if ((inodedep->id_state & ALLCOMPLETE) == ALLCOMPLETE) {
9411 dap->da_state |= COMPLETE;
9412 LIST_INSERT_HEAD(&pagedep->pd_pendinghd, dap, da_pdlist);
9413 WORKLIST_INSERT(&inodedep->id_pendinghd, &dap->da_list);
9415 LIST_INSERT_HEAD(&pagedep->pd_diraddhd[DIRADDHASH(offset)],
9417 WORKLIST_INSERT(&inodedep->id_bufwait, &dap->da_list);
9420 * If we're making a new name for a directory that has not been
9421 * committed when need to move the dot and dotdot references to
9424 if (inodedep->id_mkdiradd && dp->i_offset != DOTDOT_OFFSET)
9425 merge_diradd(inodedep, dap);
9430 * Called whenever the link count on an inode is changed.
9431 * It creates an inode dependency so that the new reference(s)
9432 * to the inode cannot be committed to disk until the updated
9433 * inode has been written.
9436 softdep_change_linkcnt(ip)
9437 struct inode *ip; /* the inode with the increased link count */
9439 struct inodedep *inodedep;
9440 struct ufsmount *ump;
9443 KASSERT(MOUNTEDSOFTDEP(UFSTOVFS(ump)) != 0,
9444 ("softdep_change_linkcnt called on non-softdep filesystem"));
9446 inodedep_lookup(UFSTOVFS(ump), ip->i_number, DEPALLOC, &inodedep);
9447 if (ip->i_nlink < ip->i_effnlink)
9448 panic("softdep_change_linkcnt: bad delta");
9449 inodedep->id_nlinkdelta = ip->i_nlink - ip->i_effnlink;
9454 * Attach a sbdep dependency to the superblock buf so that we can keep
9455 * track of the head of the linked list of referenced but unlinked inodes.
9458 softdep_setup_sbupdate(ump, fs, bp)
9459 struct ufsmount *ump;
9463 struct sbdep *sbdep;
9464 struct worklist *wk;
9466 KASSERT(MOUNTEDSOFTDEP(UFSTOVFS(ump)) != 0,
9467 ("softdep_setup_sbupdate called on non-softdep filesystem"));
9468 LIST_FOREACH(wk, &bp->b_dep, wk_list)
9469 if (wk->wk_type == D_SBDEP)
9473 sbdep = malloc(sizeof(struct sbdep), M_SBDEP, M_SOFTDEP_FLAGS);
9474 workitem_alloc(&sbdep->sb_list, D_SBDEP, UFSTOVFS(ump));
9476 sbdep->sb_ump = ump;
9478 WORKLIST_INSERT(&bp->b_dep, &sbdep->sb_list);
9483 * Return the first unlinked inodedep which is ready to be the head of the
9484 * list. The inodedep and all those after it must have valid next pointers.
9486 static struct inodedep *
9487 first_unlinked_inodedep(ump)
9488 struct ufsmount *ump;
9490 struct inodedep *inodedep;
9491 struct inodedep *idp;
9494 for (inodedep = TAILQ_LAST(&ump->softdep_unlinked, inodedeplst);
9495 inodedep; inodedep = idp) {
9496 if ((inodedep->id_state & UNLINKNEXT) == 0)
9498 idp = TAILQ_PREV(inodedep, inodedeplst, id_unlinked);
9499 if (idp == NULL || (idp->id_state & UNLINKNEXT) == 0)
9501 if ((inodedep->id_state & UNLINKPREV) == 0)
9508 * Set the sujfree unlinked head pointer prior to writing a superblock.
9511 initiate_write_sbdep(sbdep)
9512 struct sbdep *sbdep;
9514 struct inodedep *inodedep;
9518 bpfs = sbdep->sb_fs;
9519 fs = sbdep->sb_ump->um_fs;
9520 inodedep = first_unlinked_inodedep(sbdep->sb_ump);
9522 fs->fs_sujfree = inodedep->id_ino;
9523 inodedep->id_state |= UNLINKPREV;
9526 bpfs->fs_sujfree = fs->fs_sujfree;
9530 * After a superblock is written determine whether it must be written again
9531 * due to a changing unlinked list head.
9534 handle_written_sbdep(sbdep, bp)
9535 struct sbdep *sbdep;
9538 struct inodedep *inodedep;
9541 LOCK_OWNED(sbdep->sb_ump);
9544 * If the superblock doesn't match the in-memory list start over.
9546 inodedep = first_unlinked_inodedep(sbdep->sb_ump);
9547 if ((inodedep && fs->fs_sujfree != inodedep->id_ino) ||
9548 (inodedep == NULL && fs->fs_sujfree != 0)) {
9552 WORKITEM_FREE(sbdep, D_SBDEP);
9553 if (fs->fs_sujfree == 0)
9556 * Now that we have a record of this inode in stable store allow it
9557 * to be written to free up pending work. Inodes may see a lot of
9558 * write activity after they are unlinked which we must not hold up.
9560 for (; inodedep != NULL; inodedep = TAILQ_NEXT(inodedep, id_unlinked)) {
9561 if ((inodedep->id_state & UNLINKLINKS) != UNLINKLINKS)
9562 panic("handle_written_sbdep: Bad inodedep %p (0x%X)",
9563 inodedep, inodedep->id_state);
9564 if (inodedep->id_state & UNLINKONLIST)
9566 inodedep->id_state |= DEPCOMPLETE | UNLINKONLIST;
9573 * Mark an inodedep as unlinked and insert it into the in-memory unlinked list.
9576 unlinked_inodedep(mp, inodedep)
9578 struct inodedep *inodedep;
9580 struct ufsmount *ump;
9584 if (MOUNTEDSUJ(mp) == 0)
9586 ump->um_fs->fs_fmod = 1;
9587 if (inodedep->id_state & UNLINKED)
9588 panic("unlinked_inodedep: %p already unlinked\n", inodedep);
9589 inodedep->id_state |= UNLINKED;
9590 TAILQ_INSERT_HEAD(&ump->softdep_unlinked, inodedep, id_unlinked);
9594 * Remove an inodedep from the unlinked inodedep list. This may require
9595 * disk writes if the inode has made it that far.
9598 clear_unlinked_inodedep(inodedep)
9599 struct inodedep *inodedep;
9601 struct ufsmount *ump;
9602 struct inodedep *idp;
9603 struct inodedep *idn;
9611 ump = VFSTOUFS(inodedep->id_list.wk_mp);
9613 ino = inodedep->id_ino;
9617 KASSERT((inodedep->id_state & UNLINKED) != 0,
9618 ("clear_unlinked_inodedep: inodedep %p not unlinked",
9621 * If nothing has yet been written simply remove us from
9622 * the in memory list and return. This is the most common
9623 * case where handle_workitem_remove() loses the final
9626 if ((inodedep->id_state & UNLINKLINKS) == 0)
9629 * If we have a NEXT pointer and no PREV pointer we can simply
9630 * clear NEXT's PREV and remove ourselves from the list. Be
9631 * careful not to clear PREV if the superblock points at
9634 idn = TAILQ_NEXT(inodedep, id_unlinked);
9635 if ((inodedep->id_state & UNLINKLINKS) == UNLINKNEXT) {
9636 if (idn && fs->fs_sujfree != idn->id_ino)
9637 idn->id_state &= ~UNLINKPREV;
9641 * Here we have an inodedep which is actually linked into
9642 * the list. We must remove it by forcing a write to the
9643 * link before us, whether it be the superblock or an inode.
9644 * Unfortunately the list may change while we're waiting
9645 * on the buf lock for either resource so we must loop until
9646 * we lock the right one. If both the superblock and an
9647 * inode point to this inode we must clear the inode first
9648 * followed by the superblock.
9650 idp = TAILQ_PREV(inodedep, inodedeplst, id_unlinked);
9652 if (idp && (idp->id_state & UNLINKNEXT))
9656 bp = getblk(ump->um_devvp, btodb(fs->fs_sblockloc),
9657 (int)fs->fs_sbsize, 0, 0, 0);
9659 error = bread(ump->um_devvp,
9660 fsbtodb(fs, ino_to_fsba(fs, pino)),
9661 (int)fs->fs_bsize, NOCRED, &bp);
9668 /* If the list has changed restart the loop. */
9669 idp = TAILQ_PREV(inodedep, inodedeplst, id_unlinked);
9671 if (idp && (idp->id_state & UNLINKNEXT))
9674 (inodedep->id_state & UNLINKPREV) != UNLINKPREV) {
9681 idn = TAILQ_NEXT(inodedep, id_unlinked);
9685 * Remove us from the in memory list. After this we cannot
9686 * access the inodedep.
9688 KASSERT((inodedep->id_state & UNLINKED) != 0,
9689 ("clear_unlinked_inodedep: inodedep %p not unlinked",
9691 inodedep->id_state &= ~(UNLINKED | UNLINKLINKS | UNLINKONLIST);
9692 TAILQ_REMOVE(&ump->softdep_unlinked, inodedep, id_unlinked);
9695 * The predecessor's next pointer is manually updated here
9696 * so that the NEXT flag is never cleared for an element
9697 * that is in the list.
9700 bcopy((caddr_t)fs, bp->b_data, (u_int)fs->fs_sbsize);
9701 ffs_oldfscompat_write((struct fs *)bp->b_data, ump);
9702 softdep_setup_sbupdate(ump, (struct fs *)bp->b_data,
9704 } else if (fs->fs_magic == FS_UFS1_MAGIC)
9705 ((struct ufs1_dinode *)bp->b_data +
9706 ino_to_fsbo(fs, pino))->di_freelink = nino;
9708 ((struct ufs2_dinode *)bp->b_data +
9709 ino_to_fsbo(fs, pino))->di_freelink = nino;
9711 * If the bwrite fails we have no recourse to recover. The
9712 * filesystem is corrupted already.
9717 * If the superblock pointer still needs to be cleared force
9720 if (fs->fs_sujfree == ino) {
9722 bp = getblk(ump->um_devvp, btodb(fs->fs_sblockloc),
9723 (int)fs->fs_sbsize, 0, 0, 0);
9724 bcopy((caddr_t)fs, bp->b_data, (u_int)fs->fs_sbsize);
9725 ffs_oldfscompat_write((struct fs *)bp->b_data, ump);
9726 softdep_setup_sbupdate(ump, (struct fs *)bp->b_data,
9732 if (fs->fs_sujfree != ino)
9734 panic("clear_unlinked_inodedep: Failed to clear free head");
9736 if (inodedep->id_ino == fs->fs_sujfree)
9737 panic("clear_unlinked_inodedep: Freeing head of free list");
9738 inodedep->id_state &= ~(UNLINKED | UNLINKLINKS | UNLINKONLIST);
9739 TAILQ_REMOVE(&ump->softdep_unlinked, inodedep, id_unlinked);
9744 * This workitem decrements the inode's link count.
9745 * If the link count reaches zero, the file is removed.
9748 handle_workitem_remove(dirrem, flags)
9749 struct dirrem *dirrem;
9752 struct inodedep *inodedep;
9753 struct workhead dotdotwk;
9754 struct worklist *wk;
9755 struct ufsmount *ump;
9761 if (dirrem->dm_state & ONWORKLIST)
9762 panic("handle_workitem_remove: dirrem %p still on worklist",
9764 oldinum = dirrem->dm_oldinum;
9765 mp = dirrem->dm_list.wk_mp;
9767 flags |= LK_EXCLUSIVE;
9768 if (ffs_vgetf(mp, oldinum, flags, &vp, FFSV_FORCEINSMQ) != 0)
9772 if ((inodedep_lookup(mp, oldinum, 0, &inodedep)) == 0)
9773 panic("handle_workitem_remove: lost inodedep");
9774 if (dirrem->dm_state & ONDEPLIST)
9775 LIST_REMOVE(dirrem, dm_inonext);
9776 KASSERT(LIST_EMPTY(&dirrem->dm_jremrefhd),
9777 ("handle_workitem_remove: Journal entries not written."));
9780 * Move all dependencies waiting on the remove to complete
9781 * from the dirrem to the inode inowait list to be completed
9782 * after the inode has been updated and written to disk. Any
9783 * marked MKDIR_PARENT are saved to be completed when the .. ref
9786 LIST_INIT(&dotdotwk);
9787 while ((wk = LIST_FIRST(&dirrem->dm_jwork)) != NULL) {
9788 WORKLIST_REMOVE(wk);
9789 if (wk->wk_state & MKDIR_PARENT) {
9790 wk->wk_state &= ~MKDIR_PARENT;
9791 WORKLIST_INSERT(&dotdotwk, wk);
9794 WORKLIST_INSERT(&inodedep->id_inowait, wk);
9796 LIST_SWAP(&dirrem->dm_jwork, &dotdotwk, worklist, wk_list);
9798 * Normal file deletion.
9800 if ((dirrem->dm_state & RMDIR) == 0) {
9802 DIP_SET(ip, i_nlink, ip->i_nlink);
9803 ip->i_flag |= IN_CHANGE;
9804 if (ip->i_nlink < ip->i_effnlink)
9805 panic("handle_workitem_remove: bad file delta");
9806 if (ip->i_nlink == 0)
9807 unlinked_inodedep(mp, inodedep);
9808 inodedep->id_nlinkdelta = ip->i_nlink - ip->i_effnlink;
9809 KASSERT(LIST_EMPTY(&dirrem->dm_jwork),
9810 ("handle_workitem_remove: worklist not empty. %s",
9811 TYPENAME(LIST_FIRST(&dirrem->dm_jwork)->wk_type)));
9812 WORKITEM_FREE(dirrem, D_DIRREM);
9817 * Directory deletion. Decrement reference count for both the
9818 * just deleted parent directory entry and the reference for ".".
9819 * Arrange to have the reference count on the parent decremented
9820 * to account for the loss of "..".
9823 DIP_SET(ip, i_nlink, ip->i_nlink);
9824 ip->i_flag |= IN_CHANGE;
9825 if (ip->i_nlink < ip->i_effnlink)
9826 panic("handle_workitem_remove: bad dir delta");
9827 if (ip->i_nlink == 0)
9828 unlinked_inodedep(mp, inodedep);
9829 inodedep->id_nlinkdelta = ip->i_nlink - ip->i_effnlink;
9831 * Rename a directory to a new parent. Since, we are both deleting
9832 * and creating a new directory entry, the link count on the new
9833 * directory should not change. Thus we skip the followup dirrem.
9835 if (dirrem->dm_state & DIRCHG) {
9836 KASSERT(LIST_EMPTY(&dirrem->dm_jwork),
9837 ("handle_workitem_remove: DIRCHG and worklist not empty."));
9838 WORKITEM_FREE(dirrem, D_DIRREM);
9842 dirrem->dm_state = ONDEPLIST;
9843 dirrem->dm_oldinum = dirrem->dm_dirinum;
9845 * Place the dirrem on the parent's diremhd list.
9847 if (inodedep_lookup(mp, dirrem->dm_oldinum, 0, &inodedep) == 0)
9848 panic("handle_workitem_remove: lost dir inodedep");
9849 LIST_INSERT_HEAD(&inodedep->id_dirremhd, dirrem, dm_inonext);
9851 * If the allocated inode has never been written to disk, then
9852 * the on-disk inode is zero'ed and we can remove the file
9853 * immediately. When journaling if the inode has been marked
9854 * unlinked and not DEPCOMPLETE we know it can never be written.
9856 inodedep_lookup(mp, oldinum, 0, &inodedep);
9857 if (inodedep == NULL ||
9858 (inodedep->id_state & (DEPCOMPLETE | UNLINKED)) == UNLINKED ||
9859 check_inode_unwritten(inodedep)) {
9862 return handle_workitem_remove(dirrem, flags);
9864 WORKLIST_INSERT(&inodedep->id_inowait, &dirrem->dm_list);
9866 ip->i_flag |= IN_CHANGE;
9874 * Inode de-allocation dependencies.
9876 * When an inode's link count is reduced to zero, it can be de-allocated. We
9877 * found it convenient to postpone de-allocation until after the inode is
9878 * written to disk with its new link count (zero). At this point, all of the
9879 * on-disk inode's block pointers are nullified and, with careful dependency
9880 * list ordering, all dependencies related to the inode will be satisfied and
9881 * the corresponding dependency structures de-allocated. So, if/when the
9882 * inode is reused, there will be no mixing of old dependencies with new
9883 * ones. This artificial dependency is set up by the block de-allocation
9884 * procedure above (softdep_setup_freeblocks) and completed by the
9885 * following procedure.
9888 handle_workitem_freefile(freefile)
9889 struct freefile *freefile;
9891 struct workhead wkhd;
9893 struct inodedep *idp;
9894 struct ufsmount *ump;
9897 ump = VFSTOUFS(freefile->fx_list.wk_mp);
9901 error = inodedep_lookup(UFSTOVFS(ump), freefile->fx_oldinum, 0, &idp);
9904 panic("handle_workitem_freefile: inodedep %p survived", idp);
9907 fs->fs_pendinginodes -= 1;
9910 LIST_SWAP(&freefile->fx_jwork, &wkhd, worklist, wk_list);
9911 if ((error = ffs_freefile(ump, fs, freefile->fx_devvp,
9912 freefile->fx_oldinum, freefile->fx_mode, &wkhd)) != 0)
9913 softdep_error("handle_workitem_freefile", error);
9915 WORKITEM_FREE(freefile, D_FREEFILE);
9921 * Helper function which unlinks marker element from work list and returns
9922 * the next element on the list.
9924 static __inline struct worklist *
9925 markernext(struct worklist *marker)
9927 struct worklist *next;
9929 next = LIST_NEXT(marker, wk_list);
9930 LIST_REMOVE(marker, wk_list);
9937 * The dependency structures constructed above are most actively used when file
9938 * system blocks are written to disk. No constraints are placed on when a
9939 * block can be written, but unsatisfied update dependencies are made safe by
9940 * modifying (or replacing) the source memory for the duration of the disk
9941 * write. When the disk write completes, the memory block is again brought
9944 * In-core inode structure reclamation.
9946 * Because there are a finite number of "in-core" inode structures, they are
9947 * reused regularly. By transferring all inode-related dependencies to the
9948 * in-memory inode block and indexing them separately (via "inodedep"s), we
9949 * can allow "in-core" inode structures to be reused at any time and avoid
9950 * any increase in contention.
9952 * Called just before entering the device driver to initiate a new disk I/O.
9953 * The buffer must be locked, thus, no I/O completion operations can occur
9954 * while we are manipulating its associated dependencies.
9957 softdep_disk_io_initiation(bp)
9958 struct buf *bp; /* structure describing disk write to occur */
9960 struct worklist *wk;
9961 struct worklist marker;
9962 struct inodedep *inodedep;
9963 struct freeblks *freeblks;
9964 struct jblkdep *jblkdep;
9965 struct newblk *newblk;
9966 struct ufsmount *ump;
9969 * We only care about write operations. There should never
9970 * be dependencies for reads.
9972 if (bp->b_iocmd != BIO_WRITE)
9973 panic("softdep_disk_io_initiation: not write");
9975 if (bp->b_vflags & BV_BKGRDINPROG)
9976 panic("softdep_disk_io_initiation: Writing buffer with "
9977 "background write in progress: %p", bp);
9979 if ((wk = LIST_FIRST(&bp->b_dep)) == NULL)
9981 ump = VFSTOUFS(wk->wk_mp);
9983 marker.wk_type = D_LAST + 1; /* Not a normal workitem */
9984 PHOLD(curproc); /* Don't swap out kernel stack */
9987 * Do any necessary pre-I/O processing.
9989 for (wk = LIST_FIRST(&bp->b_dep); wk != NULL;
9990 wk = markernext(&marker)) {
9991 LIST_INSERT_AFTER(wk, &marker, wk_list);
9992 switch (wk->wk_type) {
9995 initiate_write_filepage(WK_PAGEDEP(wk), bp);
9999 inodedep = WK_INODEDEP(wk);
10000 if (inodedep->id_fs->fs_magic == FS_UFS1_MAGIC)
10001 initiate_write_inodeblock_ufs1(inodedep, bp);
10003 initiate_write_inodeblock_ufs2(inodedep, bp);
10007 initiate_write_indirdep(WK_INDIRDEP(wk), bp);
10011 initiate_write_bmsafemap(WK_BMSAFEMAP(wk), bp);
10015 WK_JSEG(wk)->js_buf = NULL;
10019 freeblks = WK_FREEBLKS(wk);
10020 jblkdep = LIST_FIRST(&freeblks->fb_jblkdephd);
10022 * We have to wait for the freeblks to be journaled
10023 * before we can write an inodeblock with updated
10024 * pointers. Be careful to arrange the marker so
10025 * we revisit the freeblks if it's not removed by
10026 * the first jwait().
10028 if (jblkdep != NULL) {
10029 LIST_REMOVE(&marker, wk_list);
10030 LIST_INSERT_BEFORE(wk, &marker, wk_list);
10031 jwait(&jblkdep->jb_list, MNT_WAIT);
10034 case D_ALLOCDIRECT:
10037 * We have to wait for the jnewblk to be journaled
10038 * before we can write to a block if the contents
10039 * may be confused with an earlier file's indirect
10040 * at recovery time. Handle the marker as described
10043 newblk = WK_NEWBLK(wk);
10044 if (newblk->nb_jnewblk != NULL &&
10045 indirblk_lookup(newblk->nb_list.wk_mp,
10046 newblk->nb_newblkno)) {
10047 LIST_REMOVE(&marker, wk_list);
10048 LIST_INSERT_BEFORE(wk, &marker, wk_list);
10049 jwait(&newblk->nb_jnewblk->jn_list, MNT_WAIT);
10054 initiate_write_sbdep(WK_SBDEP(wk));
10064 panic("handle_disk_io_initiation: Unexpected type %s",
10065 TYPENAME(wk->wk_type));
10070 PRELE(curproc); /* Allow swapout of kernel stack */
10074 * Called from within the procedure above to deal with unsatisfied
10075 * allocation dependencies in a directory. The buffer must be locked,
10076 * thus, no I/O completion operations can occur while we are
10077 * manipulating its associated dependencies.
10080 initiate_write_filepage(pagedep, bp)
10081 struct pagedep *pagedep;
10084 struct jremref *jremref;
10085 struct jmvref *jmvref;
10086 struct dirrem *dirrem;
10087 struct diradd *dap;
10091 if (pagedep->pd_state & IOSTARTED) {
10093 * This can only happen if there is a driver that does not
10094 * understand chaining. Here biodone will reissue the call
10095 * to strategy for the incomplete buffers.
10097 printf("initiate_write_filepage: already started\n");
10100 pagedep->pd_state |= IOSTARTED;
10102 * Wait for all journal remove dependencies to hit the disk.
10103 * We can not allow any potentially conflicting directory adds
10104 * to be visible before removes and rollback is too difficult.
10105 * The per-filesystem lock may be dropped and re-acquired, however
10106 * we hold the buf locked so the dependency can not go away.
10108 LIST_FOREACH(dirrem, &pagedep->pd_dirremhd, dm_next)
10109 while ((jremref = LIST_FIRST(&dirrem->dm_jremrefhd)) != NULL)
10110 jwait(&jremref->jr_list, MNT_WAIT);
10111 while ((jmvref = LIST_FIRST(&pagedep->pd_jmvrefhd)) != NULL)
10112 jwait(&jmvref->jm_list, MNT_WAIT);
10113 for (i = 0; i < DAHASHSZ; i++) {
10114 LIST_FOREACH(dap, &pagedep->pd_diraddhd[i], da_pdlist) {
10115 ep = (struct direct *)
10116 ((char *)bp->b_data + dap->da_offset);
10117 if (ep->d_ino != dap->da_newinum)
10118 panic("%s: dir inum %ju != new %ju",
10119 "initiate_write_filepage",
10120 (uintmax_t)ep->d_ino,
10121 (uintmax_t)dap->da_newinum);
10122 if (dap->da_state & DIRCHG)
10123 ep->d_ino = dap->da_previous->dm_oldinum;
10126 dap->da_state &= ~ATTACHED;
10127 dap->da_state |= UNDONE;
10133 * Version of initiate_write_inodeblock that handles UFS1 dinodes.
10134 * Note that any bug fixes made to this routine must be done in the
10135 * version found below.
10137 * Called from within the procedure above to deal with unsatisfied
10138 * allocation dependencies in an inodeblock. The buffer must be
10139 * locked, thus, no I/O completion operations can occur while we
10140 * are manipulating its associated dependencies.
10143 initiate_write_inodeblock_ufs1(inodedep, bp)
10144 struct inodedep *inodedep;
10145 struct buf *bp; /* The inode block */
10147 struct allocdirect *adp, *lastadp;
10148 struct ufs1_dinode *dp;
10149 struct ufs1_dinode *sip;
10150 struct inoref *inoref;
10151 struct ufsmount *ump;
10155 ufs_lbn_t prevlbn = 0;
10159 if (inodedep->id_state & IOSTARTED)
10160 panic("initiate_write_inodeblock_ufs1: already started");
10161 inodedep->id_state |= IOSTARTED;
10162 fs = inodedep->id_fs;
10163 ump = VFSTOUFS(inodedep->id_list.wk_mp);
10165 dp = (struct ufs1_dinode *)bp->b_data +
10166 ino_to_fsbo(fs, inodedep->id_ino);
10169 * If we're on the unlinked list but have not yet written our
10170 * next pointer initialize it here.
10172 if ((inodedep->id_state & (UNLINKED | UNLINKNEXT)) == UNLINKED) {
10173 struct inodedep *inon;
10175 inon = TAILQ_NEXT(inodedep, id_unlinked);
10176 dp->di_freelink = inon ? inon->id_ino : 0;
10179 * If the bitmap is not yet written, then the allocated
10180 * inode cannot be written to disk.
10182 if ((inodedep->id_state & DEPCOMPLETE) == 0) {
10183 if (inodedep->id_savedino1 != NULL)
10184 panic("initiate_write_inodeblock_ufs1: I/O underway");
10186 sip = malloc(sizeof(struct ufs1_dinode),
10187 M_SAVEDINO, M_SOFTDEP_FLAGS);
10189 inodedep->id_savedino1 = sip;
10190 *inodedep->id_savedino1 = *dp;
10191 bzero((caddr_t)dp, sizeof(struct ufs1_dinode));
10192 dp->di_gen = inodedep->id_savedino1->di_gen;
10193 dp->di_freelink = inodedep->id_savedino1->di_freelink;
10197 * If no dependencies, then there is nothing to roll back.
10199 inodedep->id_savedsize = dp->di_size;
10200 inodedep->id_savedextsize = 0;
10201 inodedep->id_savednlink = dp->di_nlink;
10202 if (TAILQ_EMPTY(&inodedep->id_inoupdt) &&
10203 TAILQ_EMPTY(&inodedep->id_inoreflst))
10206 * Revert the link count to that of the first unwritten journal entry.
10208 inoref = TAILQ_FIRST(&inodedep->id_inoreflst);
10210 dp->di_nlink = inoref->if_nlink;
10212 * Set the dependencies to busy.
10214 for (deplist = 0, adp = TAILQ_FIRST(&inodedep->id_inoupdt); adp;
10215 adp = TAILQ_NEXT(adp, ad_next)) {
10217 if (deplist != 0 && prevlbn >= adp->ad_offset)
10218 panic("softdep_write_inodeblock: lbn order");
10219 prevlbn = adp->ad_offset;
10220 if (adp->ad_offset < NDADDR &&
10221 dp->di_db[adp->ad_offset] != adp->ad_newblkno)
10222 panic("%s: direct pointer #%jd mismatch %d != %jd",
10223 "softdep_write_inodeblock",
10224 (intmax_t)adp->ad_offset,
10225 dp->di_db[adp->ad_offset],
10226 (intmax_t)adp->ad_newblkno);
10227 if (adp->ad_offset >= NDADDR &&
10228 dp->di_ib[adp->ad_offset - NDADDR] != adp->ad_newblkno)
10229 panic("%s: indirect pointer #%jd mismatch %d != %jd",
10230 "softdep_write_inodeblock",
10231 (intmax_t)adp->ad_offset - NDADDR,
10232 dp->di_ib[adp->ad_offset - NDADDR],
10233 (intmax_t)adp->ad_newblkno);
10234 deplist |= 1 << adp->ad_offset;
10235 if ((adp->ad_state & ATTACHED) == 0)
10236 panic("softdep_write_inodeblock: Unknown state 0x%x",
10238 #endif /* INVARIANTS */
10239 adp->ad_state &= ~ATTACHED;
10240 adp->ad_state |= UNDONE;
10243 * The on-disk inode cannot claim to be any larger than the last
10244 * fragment that has been written. Otherwise, the on-disk inode
10245 * might have fragments that were not the last block in the file
10246 * which would corrupt the filesystem.
10248 for (lastadp = NULL, adp = TAILQ_FIRST(&inodedep->id_inoupdt); adp;
10249 lastadp = adp, adp = TAILQ_NEXT(adp, ad_next)) {
10250 if (adp->ad_offset >= NDADDR)
10252 dp->di_db[adp->ad_offset] = adp->ad_oldblkno;
10253 /* keep going until hitting a rollback to a frag */
10254 if (adp->ad_oldsize == 0 || adp->ad_oldsize == fs->fs_bsize)
10256 dp->di_size = fs->fs_bsize * adp->ad_offset + adp->ad_oldsize;
10257 for (i = adp->ad_offset + 1; i < NDADDR; i++) {
10259 if (dp->di_db[i] != 0 && (deplist & (1 << i)) == 0)
10260 panic("softdep_write_inodeblock: lost dep1");
10261 #endif /* INVARIANTS */
10264 for (i = 0; i < NIADDR; i++) {
10266 if (dp->di_ib[i] != 0 &&
10267 (deplist & ((1 << NDADDR) << i)) == 0)
10268 panic("softdep_write_inodeblock: lost dep2");
10269 #endif /* INVARIANTS */
10275 * If we have zero'ed out the last allocated block of the file,
10276 * roll back the size to the last currently allocated block.
10277 * We know that this last allocated block is a full-sized as
10278 * we already checked for fragments in the loop above.
10280 if (lastadp != NULL &&
10281 dp->di_size <= (lastadp->ad_offset + 1) * fs->fs_bsize) {
10282 for (i = lastadp->ad_offset; i >= 0; i--)
10283 if (dp->di_db[i] != 0)
10285 dp->di_size = (i + 1) * fs->fs_bsize;
10288 * The only dependencies are for indirect blocks.
10290 * The file size for indirect block additions is not guaranteed.
10291 * Such a guarantee would be non-trivial to achieve. The conventional
10292 * synchronous write implementation also does not make this guarantee.
10293 * Fsck should catch and fix discrepancies. Arguably, the file size
10294 * can be over-estimated without destroying integrity when the file
10295 * moves into the indirect blocks (i.e., is large). If we want to
10296 * postpone fsck, we are stuck with this argument.
10298 for (; adp; adp = TAILQ_NEXT(adp, ad_next))
10299 dp->di_ib[adp->ad_offset - NDADDR] = 0;
10303 * Version of initiate_write_inodeblock that handles UFS2 dinodes.
10304 * Note that any bug fixes made to this routine must be done in the
10305 * version found above.
10307 * Called from within the procedure above to deal with unsatisfied
10308 * allocation dependencies in an inodeblock. The buffer must be
10309 * locked, thus, no I/O completion operations can occur while we
10310 * are manipulating its associated dependencies.
10313 initiate_write_inodeblock_ufs2(inodedep, bp)
10314 struct inodedep *inodedep;
10315 struct buf *bp; /* The inode block */
10317 struct allocdirect *adp, *lastadp;
10318 struct ufs2_dinode *dp;
10319 struct ufs2_dinode *sip;
10320 struct inoref *inoref;
10321 struct ufsmount *ump;
10325 ufs_lbn_t prevlbn = 0;
10329 if (inodedep->id_state & IOSTARTED)
10330 panic("initiate_write_inodeblock_ufs2: already started");
10331 inodedep->id_state |= IOSTARTED;
10332 fs = inodedep->id_fs;
10333 ump = VFSTOUFS(inodedep->id_list.wk_mp);
10335 dp = (struct ufs2_dinode *)bp->b_data +
10336 ino_to_fsbo(fs, inodedep->id_ino);
10339 * If we're on the unlinked list but have not yet written our
10340 * next pointer initialize it here.
10342 if ((inodedep->id_state & (UNLINKED | UNLINKNEXT)) == UNLINKED) {
10343 struct inodedep *inon;
10345 inon = TAILQ_NEXT(inodedep, id_unlinked);
10346 dp->di_freelink = inon ? inon->id_ino : 0;
10349 * If the bitmap is not yet written, then the allocated
10350 * inode cannot be written to disk.
10352 if ((inodedep->id_state & DEPCOMPLETE) == 0) {
10353 if (inodedep->id_savedino2 != NULL)
10354 panic("initiate_write_inodeblock_ufs2: I/O underway");
10356 sip = malloc(sizeof(struct ufs2_dinode),
10357 M_SAVEDINO, M_SOFTDEP_FLAGS);
10359 inodedep->id_savedino2 = sip;
10360 *inodedep->id_savedino2 = *dp;
10361 bzero((caddr_t)dp, sizeof(struct ufs2_dinode));
10362 dp->di_gen = inodedep->id_savedino2->di_gen;
10363 dp->di_freelink = inodedep->id_savedino2->di_freelink;
10367 * If no dependencies, then there is nothing to roll back.
10369 inodedep->id_savedsize = dp->di_size;
10370 inodedep->id_savedextsize = dp->di_extsize;
10371 inodedep->id_savednlink = dp->di_nlink;
10372 if (TAILQ_EMPTY(&inodedep->id_inoupdt) &&
10373 TAILQ_EMPTY(&inodedep->id_extupdt) &&
10374 TAILQ_EMPTY(&inodedep->id_inoreflst))
10377 * Revert the link count to that of the first unwritten journal entry.
10379 inoref = TAILQ_FIRST(&inodedep->id_inoreflst);
10381 dp->di_nlink = inoref->if_nlink;
10384 * Set the ext data dependencies to busy.
10386 for (deplist = 0, adp = TAILQ_FIRST(&inodedep->id_extupdt); adp;
10387 adp = TAILQ_NEXT(adp, ad_next)) {
10389 if (deplist != 0 && prevlbn >= adp->ad_offset)
10390 panic("softdep_write_inodeblock: lbn order");
10391 prevlbn = adp->ad_offset;
10392 if (dp->di_extb[adp->ad_offset] != adp->ad_newblkno)
10393 panic("%s: direct pointer #%jd mismatch %jd != %jd",
10394 "softdep_write_inodeblock",
10395 (intmax_t)adp->ad_offset,
10396 (intmax_t)dp->di_extb[adp->ad_offset],
10397 (intmax_t)adp->ad_newblkno);
10398 deplist |= 1 << adp->ad_offset;
10399 if ((adp->ad_state & ATTACHED) == 0)
10400 panic("softdep_write_inodeblock: Unknown state 0x%x",
10402 #endif /* INVARIANTS */
10403 adp->ad_state &= ~ATTACHED;
10404 adp->ad_state |= UNDONE;
10407 * The on-disk inode cannot claim to be any larger than the last
10408 * fragment that has been written. Otherwise, the on-disk inode
10409 * might have fragments that were not the last block in the ext
10410 * data which would corrupt the filesystem.
10412 for (lastadp = NULL, adp = TAILQ_FIRST(&inodedep->id_extupdt); adp;
10413 lastadp = adp, adp = TAILQ_NEXT(adp, ad_next)) {
10414 dp->di_extb[adp->ad_offset] = adp->ad_oldblkno;
10415 /* keep going until hitting a rollback to a frag */
10416 if (adp->ad_oldsize == 0 || adp->ad_oldsize == fs->fs_bsize)
10418 dp->di_extsize = fs->fs_bsize * adp->ad_offset + adp->ad_oldsize;
10419 for (i = adp->ad_offset + 1; i < NXADDR; i++) {
10421 if (dp->di_extb[i] != 0 && (deplist & (1 << i)) == 0)
10422 panic("softdep_write_inodeblock: lost dep1");
10423 #endif /* INVARIANTS */
10424 dp->di_extb[i] = 0;
10430 * If we have zero'ed out the last allocated block of the ext
10431 * data, roll back the size to the last currently allocated block.
10432 * We know that this last allocated block is a full-sized as
10433 * we already checked for fragments in the loop above.
10435 if (lastadp != NULL &&
10436 dp->di_extsize <= (lastadp->ad_offset + 1) * fs->fs_bsize) {
10437 for (i = lastadp->ad_offset; i >= 0; i--)
10438 if (dp->di_extb[i] != 0)
10440 dp->di_extsize = (i + 1) * fs->fs_bsize;
10443 * Set the file data dependencies to busy.
10445 for (deplist = 0, adp = TAILQ_FIRST(&inodedep->id_inoupdt); adp;
10446 adp = TAILQ_NEXT(adp, ad_next)) {
10448 if (deplist != 0 && prevlbn >= adp->ad_offset)
10449 panic("softdep_write_inodeblock: lbn order");
10450 if ((adp->ad_state & ATTACHED) == 0)
10451 panic("inodedep %p and adp %p not attached", inodedep, adp);
10452 prevlbn = adp->ad_offset;
10453 if (adp->ad_offset < NDADDR &&
10454 dp->di_db[adp->ad_offset] != adp->ad_newblkno)
10455 panic("%s: direct pointer #%jd mismatch %jd != %jd",
10456 "softdep_write_inodeblock",
10457 (intmax_t)adp->ad_offset,
10458 (intmax_t)dp->di_db[adp->ad_offset],
10459 (intmax_t)adp->ad_newblkno);
10460 if (adp->ad_offset >= NDADDR &&
10461 dp->di_ib[adp->ad_offset - NDADDR] != adp->ad_newblkno)
10462 panic("%s indirect pointer #%jd mismatch %jd != %jd",
10463 "softdep_write_inodeblock:",
10464 (intmax_t)adp->ad_offset - NDADDR,
10465 (intmax_t)dp->di_ib[adp->ad_offset - NDADDR],
10466 (intmax_t)adp->ad_newblkno);
10467 deplist |= 1 << adp->ad_offset;
10468 if ((adp->ad_state & ATTACHED) == 0)
10469 panic("softdep_write_inodeblock: Unknown state 0x%x",
10471 #endif /* INVARIANTS */
10472 adp->ad_state &= ~ATTACHED;
10473 adp->ad_state |= UNDONE;
10476 * The on-disk inode cannot claim to be any larger than the last
10477 * fragment that has been written. Otherwise, the on-disk inode
10478 * might have fragments that were not the last block in the file
10479 * which would corrupt the filesystem.
10481 for (lastadp = NULL, adp = TAILQ_FIRST(&inodedep->id_inoupdt); adp;
10482 lastadp = adp, adp = TAILQ_NEXT(adp, ad_next)) {
10483 if (adp->ad_offset >= NDADDR)
10485 dp->di_db[adp->ad_offset] = adp->ad_oldblkno;
10486 /* keep going until hitting a rollback to a frag */
10487 if (adp->ad_oldsize == 0 || adp->ad_oldsize == fs->fs_bsize)
10489 dp->di_size = fs->fs_bsize * adp->ad_offset + adp->ad_oldsize;
10490 for (i = adp->ad_offset + 1; i < NDADDR; i++) {
10492 if (dp->di_db[i] != 0 && (deplist & (1 << i)) == 0)
10493 panic("softdep_write_inodeblock: lost dep2");
10494 #endif /* INVARIANTS */
10497 for (i = 0; i < NIADDR; i++) {
10499 if (dp->di_ib[i] != 0 &&
10500 (deplist & ((1 << NDADDR) << i)) == 0)
10501 panic("softdep_write_inodeblock: lost dep3");
10502 #endif /* INVARIANTS */
10508 * If we have zero'ed out the last allocated block of the file,
10509 * roll back the size to the last currently allocated block.
10510 * We know that this last allocated block is a full-sized as
10511 * we already checked for fragments in the loop above.
10513 if (lastadp != NULL &&
10514 dp->di_size <= (lastadp->ad_offset + 1) * fs->fs_bsize) {
10515 for (i = lastadp->ad_offset; i >= 0; i--)
10516 if (dp->di_db[i] != 0)
10518 dp->di_size = (i + 1) * fs->fs_bsize;
10521 * The only dependencies are for indirect blocks.
10523 * The file size for indirect block additions is not guaranteed.
10524 * Such a guarantee would be non-trivial to achieve. The conventional
10525 * synchronous write implementation also does not make this guarantee.
10526 * Fsck should catch and fix discrepancies. Arguably, the file size
10527 * can be over-estimated without destroying integrity when the file
10528 * moves into the indirect blocks (i.e., is large). If we want to
10529 * postpone fsck, we are stuck with this argument.
10531 for (; adp; adp = TAILQ_NEXT(adp, ad_next))
10532 dp->di_ib[adp->ad_offset - NDADDR] = 0;
10536 * Cancel an indirdep as a result of truncation. Release all of the
10537 * children allocindirs and place their journal work on the appropriate
10541 cancel_indirdep(indirdep, bp, freeblks)
10542 struct indirdep *indirdep;
10544 struct freeblks *freeblks;
10546 struct allocindir *aip;
10549 * None of the indirect pointers will ever be visible,
10550 * so they can simply be tossed. GOINGAWAY ensures
10551 * that allocated pointers will be saved in the buffer
10552 * cache until they are freed. Note that they will
10553 * only be able to be found by their physical address
10554 * since the inode mapping the logical address will
10555 * be gone. The save buffer used for the safe copy
10556 * was allocated in setup_allocindir_phase2 using
10557 * the physical address so it could be used for this
10558 * purpose. Hence we swap the safe copy with the real
10559 * copy, allowing the safe copy to be freed and holding
10560 * on to the real copy for later use in indir_trunc.
10562 if (indirdep->ir_state & GOINGAWAY)
10563 panic("cancel_indirdep: already gone");
10564 if ((indirdep->ir_state & DEPCOMPLETE) == 0) {
10565 indirdep->ir_state |= DEPCOMPLETE;
10566 LIST_REMOVE(indirdep, ir_next);
10568 indirdep->ir_state |= GOINGAWAY;
10570 * Pass in bp for blocks still have journal writes
10571 * pending so we can cancel them on their own.
10573 while ((aip = LIST_FIRST(&indirdep->ir_deplisthd)) != NULL)
10574 cancel_allocindir(aip, bp, freeblks, 0);
10575 while ((aip = LIST_FIRST(&indirdep->ir_donehd)) != NULL)
10576 cancel_allocindir(aip, NULL, freeblks, 0);
10577 while ((aip = LIST_FIRST(&indirdep->ir_writehd)) != NULL)
10578 cancel_allocindir(aip, NULL, freeblks, 0);
10579 while ((aip = LIST_FIRST(&indirdep->ir_completehd)) != NULL)
10580 cancel_allocindir(aip, NULL, freeblks, 0);
10582 * If there are pending partial truncations we need to keep the
10583 * old block copy around until they complete. This is because
10584 * the current b_data is not a perfect superset of the available
10587 if (TAILQ_EMPTY(&indirdep->ir_trunc))
10588 bcopy(bp->b_data, indirdep->ir_savebp->b_data, bp->b_bcount);
10590 bcopy(bp->b_data, indirdep->ir_saveddata, bp->b_bcount);
10591 WORKLIST_REMOVE(&indirdep->ir_list);
10592 WORKLIST_INSERT(&indirdep->ir_savebp->b_dep, &indirdep->ir_list);
10593 indirdep->ir_bp = NULL;
10594 indirdep->ir_freeblks = freeblks;
10598 * Free an indirdep once it no longer has new pointers to track.
10601 free_indirdep(indirdep)
10602 struct indirdep *indirdep;
10605 KASSERT(TAILQ_EMPTY(&indirdep->ir_trunc),
10606 ("free_indirdep: Indir trunc list not empty."));
10607 KASSERT(LIST_EMPTY(&indirdep->ir_completehd),
10608 ("free_indirdep: Complete head not empty."));
10609 KASSERT(LIST_EMPTY(&indirdep->ir_writehd),
10610 ("free_indirdep: write head not empty."));
10611 KASSERT(LIST_EMPTY(&indirdep->ir_donehd),
10612 ("free_indirdep: done head not empty."));
10613 KASSERT(LIST_EMPTY(&indirdep->ir_deplisthd),
10614 ("free_indirdep: deplist head not empty."));
10615 KASSERT((indirdep->ir_state & DEPCOMPLETE),
10616 ("free_indirdep: %p still on newblk list.", indirdep));
10617 KASSERT(indirdep->ir_saveddata == NULL,
10618 ("free_indirdep: %p still has saved data.", indirdep));
10619 if (indirdep->ir_state & ONWORKLIST)
10620 WORKLIST_REMOVE(&indirdep->ir_list);
10621 WORKITEM_FREE(indirdep, D_INDIRDEP);
10625 * Called before a write to an indirdep. This routine is responsible for
10626 * rolling back pointers to a safe state which includes only those
10627 * allocindirs which have been completed.
10630 initiate_write_indirdep(indirdep, bp)
10631 struct indirdep *indirdep;
10634 struct ufsmount *ump;
10636 indirdep->ir_state |= IOSTARTED;
10637 if (indirdep->ir_state & GOINGAWAY)
10638 panic("disk_io_initiation: indirdep gone");
10640 * If there are no remaining dependencies, this will be writing
10641 * the real pointers.
10643 if (LIST_EMPTY(&indirdep->ir_deplisthd) &&
10644 TAILQ_EMPTY(&indirdep->ir_trunc))
10647 * Replace up-to-date version with safe version.
10649 if (indirdep->ir_saveddata == NULL) {
10650 ump = VFSTOUFS(indirdep->ir_list.wk_mp);
10653 indirdep->ir_saveddata = malloc(bp->b_bcount, M_INDIRDEP,
10657 indirdep->ir_state &= ~ATTACHED;
10658 indirdep->ir_state |= UNDONE;
10659 bcopy(bp->b_data, indirdep->ir_saveddata, bp->b_bcount);
10660 bcopy(indirdep->ir_savebp->b_data, bp->b_data,
10665 * Called when an inode has been cleared in a cg bitmap. This finally
10666 * eliminates any canceled jaddrefs
10669 softdep_setup_inofree(mp, bp, ino, wkhd)
10673 struct workhead *wkhd;
10675 struct worklist *wk, *wkn;
10676 struct inodedep *inodedep;
10677 struct ufsmount *ump;
10682 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
10683 ("softdep_setup_inofree called on non-softdep filesystem"));
10684 ump = VFSTOUFS(mp);
10687 cgp = (struct cg *)bp->b_data;
10688 inosused = cg_inosused(cgp);
10689 if (isset(inosused, ino % fs->fs_ipg))
10690 panic("softdep_setup_inofree: inode %ju not freed.",
10692 if (inodedep_lookup(mp, ino, 0, &inodedep))
10693 panic("softdep_setup_inofree: ino %ju has existing inodedep %p",
10694 (uintmax_t)ino, inodedep);
10696 LIST_FOREACH_SAFE(wk, wkhd, wk_list, wkn) {
10697 if (wk->wk_type != D_JADDREF)
10699 WORKLIST_REMOVE(wk);
10701 * We can free immediately even if the jaddref
10702 * isn't attached in a background write as now
10703 * the bitmaps are reconciled.
10705 wk->wk_state |= COMPLETE | ATTACHED;
10706 free_jaddref(WK_JADDREF(wk));
10708 jwork_move(&bp->b_dep, wkhd);
10715 * Called via ffs_blkfree() after a set of frags has been cleared from a cg
10716 * map. Any dependencies waiting for the write to clear are added to the
10717 * buf's list and any jnewblks that are being canceled are discarded
10721 softdep_setup_blkfree(mp, bp, blkno, frags, wkhd)
10724 ufs2_daddr_t blkno;
10726 struct workhead *wkhd;
10728 struct bmsafemap *bmsafemap;
10729 struct jnewblk *jnewblk;
10730 struct ufsmount *ump;
10731 struct worklist *wk;
10736 ufs2_daddr_t jstart;
10744 "softdep_setup_blkfree: blkno %jd frags %d wk head %p",
10745 blkno, frags, wkhd);
10747 ump = VFSTOUFS(mp);
10748 KASSERT(MOUNTEDSOFTDEP(UFSTOVFS(ump)) != 0,
10749 ("softdep_setup_blkfree called on non-softdep filesystem"));
10751 /* Lookup the bmsafemap so we track when it is dirty. */
10753 bmsafemap = bmsafemap_lookup(mp, bp, dtog(fs, blkno), NULL);
10755 * Detach any jnewblks which have been canceled. They must linger
10756 * until the bitmap is cleared again by ffs_blkfree() to prevent
10757 * an unjournaled allocation from hitting the disk.
10760 while ((wk = LIST_FIRST(wkhd)) != NULL) {
10762 "softdep_setup_blkfree: blkno %jd wk type %d",
10763 blkno, wk->wk_type);
10764 WORKLIST_REMOVE(wk);
10765 if (wk->wk_type != D_JNEWBLK) {
10766 WORKLIST_INSERT(&bmsafemap->sm_freehd, wk);
10769 jnewblk = WK_JNEWBLK(wk);
10770 KASSERT(jnewblk->jn_state & GOINGAWAY,
10771 ("softdep_setup_blkfree: jnewblk not canceled."));
10774 * Assert that this block is free in the bitmap
10775 * before we discard the jnewblk.
10777 cgp = (struct cg *)bp->b_data;
10778 blksfree = cg_blksfree(cgp);
10779 bno = dtogd(fs, jnewblk->jn_blkno);
10780 for (i = jnewblk->jn_oldfrags;
10781 i < jnewblk->jn_frags; i++) {
10782 if (isset(blksfree, bno + i))
10784 panic("softdep_setup_blkfree: not free");
10788 * Even if it's not attached we can free immediately
10789 * as the new bitmap is correct.
10791 wk->wk_state |= COMPLETE | ATTACHED;
10792 free_jnewblk(jnewblk);
10798 * Assert that we are not freeing a block which has an outstanding
10799 * allocation dependency.
10801 fs = VFSTOUFS(mp)->um_fs;
10802 bmsafemap = bmsafemap_lookup(mp, bp, dtog(fs, blkno), NULL);
10803 end = blkno + frags;
10804 LIST_FOREACH(jnewblk, &bmsafemap->sm_jnewblkhd, jn_deps) {
10806 * Don't match against blocks that will be freed when the
10807 * background write is done.
10809 if ((jnewblk->jn_state & (ATTACHED | COMPLETE | DEPCOMPLETE)) ==
10810 (COMPLETE | DEPCOMPLETE))
10812 jstart = jnewblk->jn_blkno + jnewblk->jn_oldfrags;
10813 jend = jnewblk->jn_blkno + jnewblk->jn_frags;
10814 if ((blkno >= jstart && blkno < jend) ||
10815 (end > jstart && end <= jend)) {
10816 printf("state 0x%X %jd - %d %d dep %p\n",
10817 jnewblk->jn_state, jnewblk->jn_blkno,
10818 jnewblk->jn_oldfrags, jnewblk->jn_frags,
10820 panic("softdep_setup_blkfree: "
10821 "%jd-%jd(%d) overlaps with %jd-%jd",
10822 blkno, end, frags, jstart, jend);
10830 * Revert a block allocation when the journal record that describes it
10831 * is not yet written.
10834 jnewblk_rollback(jnewblk, fs, cgp, blksfree)
10835 struct jnewblk *jnewblk;
10840 ufs1_daddr_t fragno;
10846 cgbno = dtogd(fs, jnewblk->jn_blkno);
10848 * We have to test which frags need to be rolled back. We may
10849 * be operating on a stale copy when doing background writes.
10851 for (i = jnewblk->jn_oldfrags; i < jnewblk->jn_frags; i++)
10852 if (isclr(blksfree, cgbno + i))
10857 * This is mostly ffs_blkfree() sans some validation and
10858 * superblock updates.
10860 if (frags == fs->fs_frag) {
10861 fragno = fragstoblks(fs, cgbno);
10862 ffs_setblock(fs, blksfree, fragno);
10863 ffs_clusteracct(fs, cgp, fragno, 1);
10864 cgp->cg_cs.cs_nbfree++;
10866 cgbno += jnewblk->jn_oldfrags;
10867 bbase = cgbno - fragnum(fs, cgbno);
10868 /* Decrement the old frags. */
10869 blk = blkmap(fs, blksfree, bbase);
10870 ffs_fragacct(fs, blk, cgp->cg_frsum, -1);
10871 /* Deallocate the fragment */
10872 for (i = 0; i < frags; i++)
10873 setbit(blksfree, cgbno + i);
10874 cgp->cg_cs.cs_nffree += frags;
10875 /* Add back in counts associated with the new frags */
10876 blk = blkmap(fs, blksfree, bbase);
10877 ffs_fragacct(fs, blk, cgp->cg_frsum, 1);
10878 /* If a complete block has been reassembled, account for it. */
10879 fragno = fragstoblks(fs, bbase);
10880 if (ffs_isblock(fs, blksfree, fragno)) {
10881 cgp->cg_cs.cs_nffree -= fs->fs_frag;
10882 ffs_clusteracct(fs, cgp, fragno, 1);
10883 cgp->cg_cs.cs_nbfree++;
10887 jnewblk->jn_state &= ~ATTACHED;
10888 jnewblk->jn_state |= UNDONE;
10894 initiate_write_bmsafemap(bmsafemap, bp)
10895 struct bmsafemap *bmsafemap;
10896 struct buf *bp; /* The cg block. */
10898 struct jaddref *jaddref;
10899 struct jnewblk *jnewblk;
10907 * If this is a background write, we did this at the time that
10908 * the copy was made, so do not need to do it again.
10910 if (bmsafemap->sm_state & IOSTARTED)
10912 bmsafemap->sm_state |= IOSTARTED;
10914 * Clear any inode allocations which are pending journal writes.
10916 if (LIST_FIRST(&bmsafemap->sm_jaddrefhd) != NULL) {
10917 cgp = (struct cg *)bp->b_data;
10918 fs = VFSTOUFS(bmsafemap->sm_list.wk_mp)->um_fs;
10919 inosused = cg_inosused(cgp);
10920 LIST_FOREACH(jaddref, &bmsafemap->sm_jaddrefhd, ja_bmdeps) {
10921 ino = jaddref->ja_ino % fs->fs_ipg;
10922 if (isset(inosused, ino)) {
10923 if ((jaddref->ja_mode & IFMT) == IFDIR)
10924 cgp->cg_cs.cs_ndir--;
10925 cgp->cg_cs.cs_nifree++;
10926 clrbit(inosused, ino);
10927 jaddref->ja_state &= ~ATTACHED;
10928 jaddref->ja_state |= UNDONE;
10931 panic("initiate_write_bmsafemap: inode %ju "
10932 "marked free", (uintmax_t)jaddref->ja_ino);
10936 * Clear any block allocations which are pending journal writes.
10938 if (LIST_FIRST(&bmsafemap->sm_jnewblkhd) != NULL) {
10939 cgp = (struct cg *)bp->b_data;
10940 fs = VFSTOUFS(bmsafemap->sm_list.wk_mp)->um_fs;
10941 blksfree = cg_blksfree(cgp);
10942 LIST_FOREACH(jnewblk, &bmsafemap->sm_jnewblkhd, jn_deps) {
10943 if (jnewblk_rollback(jnewblk, fs, cgp, blksfree))
10945 panic("initiate_write_bmsafemap: block %jd "
10946 "marked free", jnewblk->jn_blkno);
10950 * Move allocation lists to the written lists so they can be
10951 * cleared once the block write is complete.
10953 LIST_SWAP(&bmsafemap->sm_inodedephd, &bmsafemap->sm_inodedepwr,
10954 inodedep, id_deps);
10955 LIST_SWAP(&bmsafemap->sm_newblkhd, &bmsafemap->sm_newblkwr,
10957 LIST_SWAP(&bmsafemap->sm_freehd, &bmsafemap->sm_freewr, worklist,
10962 * This routine is called during the completion interrupt
10963 * service routine for a disk write (from the procedure called
10964 * by the device driver to inform the filesystem caches of
10965 * a request completion). It should be called early in this
10966 * procedure, before the block is made available to other
10967 * processes or other routines are called.
10971 softdep_disk_write_complete(bp)
10972 struct buf *bp; /* describes the completed disk write */
10974 struct worklist *wk;
10975 struct worklist *owk;
10976 struct ufsmount *ump;
10977 struct workhead reattach;
10978 struct freeblks *freeblks;
10982 * If an error occurred while doing the write, then the data
10983 * has not hit the disk and the dependencies cannot be processed.
10984 * But we do have to go through and roll forward any dependencies
10985 * that were rolled back before the disk write.
10987 if ((bp->b_ioflags & BIO_ERROR) != 0 && (bp->b_flags & B_INVAL) == 0) {
10988 LIST_FOREACH(wk, &bp->b_dep, wk_list) {
10989 switch (wk->wk_type) {
10992 handle_written_filepage(WK_PAGEDEP(wk), bp, 0);
10996 handle_written_inodeblock(WK_INODEDEP(wk),
11001 handle_written_bmsafemap(WK_BMSAFEMAP(wk),
11006 handle_written_indirdep(WK_INDIRDEP(wk),
11010 /* nothing to roll forward */
11016 if ((wk = LIST_FIRST(&bp->b_dep)) == NULL)
11018 ump = VFSTOUFS(wk->wk_mp);
11019 LIST_INIT(&reattach);
11021 * This lock must not be released anywhere in this code segment.
11026 while ((wk = LIST_FIRST(&bp->b_dep)) != NULL) {
11027 WORKLIST_REMOVE(wk);
11028 atomic_add_long(&dep_write[wk->wk_type], 1);
11030 panic("duplicate worklist: %p\n", wk);
11032 switch (wk->wk_type) {
11035 if (handle_written_filepage(WK_PAGEDEP(wk), bp,
11037 WORKLIST_INSERT(&reattach, wk);
11041 if (handle_written_inodeblock(WK_INODEDEP(wk), bp,
11043 WORKLIST_INSERT(&reattach, wk);
11047 if (handle_written_bmsafemap(WK_BMSAFEMAP(wk), bp,
11049 WORKLIST_INSERT(&reattach, wk);
11053 handle_written_mkdir(WK_MKDIR(wk), MKDIR_BODY);
11056 case D_ALLOCDIRECT:
11057 wk->wk_state |= COMPLETE;
11058 handle_allocdirect_partdone(WK_ALLOCDIRECT(wk), NULL);
11062 wk->wk_state |= COMPLETE;
11063 handle_allocindir_partdone(WK_ALLOCINDIR(wk));
11067 if (handle_written_indirdep(WK_INDIRDEP(wk), bp, &sbp,
11069 WORKLIST_INSERT(&reattach, wk);
11073 wk->wk_state |= COMPLETE;
11074 freeblks = WK_FREEBLKS(wk);
11075 if ((wk->wk_state & ALLCOMPLETE) == ALLCOMPLETE &&
11076 LIST_EMPTY(&freeblks->fb_jblkdephd))
11077 add_to_worklist(wk, WK_NODELAY);
11081 handle_written_freework(WK_FREEWORK(wk));
11085 free_jsegdep(WK_JSEGDEP(wk));
11089 handle_written_jseg(WK_JSEG(wk), bp);
11093 if (handle_written_sbdep(WK_SBDEP(wk), bp))
11094 WORKLIST_INSERT(&reattach, wk);
11098 free_freedep(WK_FREEDEP(wk));
11102 panic("handle_disk_write_complete: Unknown type %s",
11103 TYPENAME(wk->wk_type));
11108 * Reattach any requests that must be redone.
11110 while ((wk = LIST_FIRST(&reattach)) != NULL) {
11111 WORKLIST_REMOVE(wk);
11112 WORKLIST_INSERT(&bp->b_dep, wk);
11120 * Called from within softdep_disk_write_complete above. Note that
11121 * this routine is always called from interrupt level with further
11122 * splbio interrupts blocked.
11125 handle_allocdirect_partdone(adp, wkhd)
11126 struct allocdirect *adp; /* the completed allocdirect */
11127 struct workhead *wkhd; /* Work to do when inode is writtne. */
11129 struct allocdirectlst *listhead;
11130 struct allocdirect *listadp;
11131 struct inodedep *inodedep;
11134 if ((adp->ad_state & ALLCOMPLETE) != ALLCOMPLETE)
11137 * The on-disk inode cannot claim to be any larger than the last
11138 * fragment that has been written. Otherwise, the on-disk inode
11139 * might have fragments that were not the last block in the file
11140 * which would corrupt the filesystem. Thus, we cannot free any
11141 * allocdirects after one whose ad_oldblkno claims a fragment as
11142 * these blocks must be rolled back to zero before writing the inode.
11143 * We check the currently active set of allocdirects in id_inoupdt
11144 * or id_extupdt as appropriate.
11146 inodedep = adp->ad_inodedep;
11147 bsize = inodedep->id_fs->fs_bsize;
11148 if (adp->ad_state & EXTDATA)
11149 listhead = &inodedep->id_extupdt;
11151 listhead = &inodedep->id_inoupdt;
11152 TAILQ_FOREACH(listadp, listhead, ad_next) {
11153 /* found our block */
11154 if (listadp == adp)
11156 /* continue if ad_oldlbn is not a fragment */
11157 if (listadp->ad_oldsize == 0 ||
11158 listadp->ad_oldsize == bsize)
11160 /* hit a fragment */
11164 * If we have reached the end of the current list without
11165 * finding the just finished dependency, then it must be
11166 * on the future dependency list. Future dependencies cannot
11167 * be freed until they are moved to the current list.
11169 if (listadp == NULL) {
11171 if (adp->ad_state & EXTDATA)
11172 listhead = &inodedep->id_newextupdt;
11174 listhead = &inodedep->id_newinoupdt;
11175 TAILQ_FOREACH(listadp, listhead, ad_next)
11176 /* found our block */
11177 if (listadp == adp)
11179 if (listadp == NULL)
11180 panic("handle_allocdirect_partdone: lost dep");
11185 * If we have found the just finished dependency, then queue
11186 * it along with anything that follows it that is complete.
11187 * Since the pointer has not yet been written in the inode
11188 * as the dependency prevents it, place the allocdirect on the
11189 * bufwait list where it will be freed once the pointer is
11193 wkhd = &inodedep->id_bufwait;
11194 for (; adp; adp = listadp) {
11195 listadp = TAILQ_NEXT(adp, ad_next);
11196 if ((adp->ad_state & ALLCOMPLETE) != ALLCOMPLETE)
11198 TAILQ_REMOVE(listhead, adp, ad_next);
11199 WORKLIST_INSERT(wkhd, &adp->ad_block.nb_list);
11204 * Called from within softdep_disk_write_complete above. This routine
11205 * completes successfully written allocindirs.
11208 handle_allocindir_partdone(aip)
11209 struct allocindir *aip; /* the completed allocindir */
11211 struct indirdep *indirdep;
11213 if ((aip->ai_state & ALLCOMPLETE) != ALLCOMPLETE)
11215 indirdep = aip->ai_indirdep;
11216 LIST_REMOVE(aip, ai_next);
11218 * Don't set a pointer while the buffer is undergoing IO or while
11219 * we have active truncations.
11221 if (indirdep->ir_state & UNDONE || !TAILQ_EMPTY(&indirdep->ir_trunc)) {
11222 LIST_INSERT_HEAD(&indirdep->ir_donehd, aip, ai_next);
11225 if (indirdep->ir_state & UFS1FMT)
11226 ((ufs1_daddr_t *)indirdep->ir_savebp->b_data)[aip->ai_offset] =
11229 ((ufs2_daddr_t *)indirdep->ir_savebp->b_data)[aip->ai_offset] =
11232 * Await the pointer write before freeing the allocindir.
11234 LIST_INSERT_HEAD(&indirdep->ir_writehd, aip, ai_next);
11238 * Release segments held on a jwork list.
11242 struct workhead *wkhd;
11244 struct worklist *wk;
11246 while ((wk = LIST_FIRST(wkhd)) != NULL) {
11247 WORKLIST_REMOVE(wk);
11248 switch (wk->wk_type) {
11250 free_jsegdep(WK_JSEGDEP(wk));
11253 free_freedep(WK_FREEDEP(wk));
11256 rele_jseg(WK_JSEG(WK_FREEFRAG(wk)->ff_jdep));
11257 WORKITEM_FREE(wk, D_FREEFRAG);
11260 handle_written_freework(WK_FREEWORK(wk));
11263 panic("handle_jwork: Unknown type %s\n",
11264 TYPENAME(wk->wk_type));
11270 * Handle the bufwait list on an inode when it is safe to release items
11271 * held there. This normally happens after an inode block is written but
11272 * may be delayed and handled later if there are pending journal items that
11273 * are not yet safe to be released.
11275 static struct freefile *
11276 handle_bufwait(inodedep, refhd)
11277 struct inodedep *inodedep;
11278 struct workhead *refhd;
11280 struct jaddref *jaddref;
11281 struct freefile *freefile;
11282 struct worklist *wk;
11285 while ((wk = LIST_FIRST(&inodedep->id_bufwait)) != NULL) {
11286 WORKLIST_REMOVE(wk);
11287 switch (wk->wk_type) {
11290 * We defer adding freefile to the worklist
11291 * until all other additions have been made to
11292 * ensure that it will be done after all the
11293 * old blocks have been freed.
11295 if (freefile != NULL)
11296 panic("handle_bufwait: freefile");
11297 freefile = WK_FREEFILE(wk);
11301 handle_written_mkdir(WK_MKDIR(wk), MKDIR_PARENT);
11305 diradd_inode_written(WK_DIRADD(wk), inodedep);
11309 wk->wk_state |= COMPLETE;
11310 if ((wk->wk_state & ALLCOMPLETE) == ALLCOMPLETE)
11311 add_to_worklist(wk, 0);
11315 wk->wk_state |= COMPLETE;
11316 add_to_worklist(wk, 0);
11319 case D_ALLOCDIRECT:
11321 free_newblk(WK_NEWBLK(wk));
11325 wk->wk_state |= COMPLETE;
11326 free_jnewblk(WK_JNEWBLK(wk));
11330 * Save freed journal segments and add references on
11331 * the supplied list which will delay their release
11332 * until the cg bitmap is cleared on disk.
11336 free_jsegdep(WK_JSEGDEP(wk));
11338 WORKLIST_INSERT(refhd, wk);
11342 jaddref = WK_JADDREF(wk);
11343 TAILQ_REMOVE(&inodedep->id_inoreflst, &jaddref->ja_ref,
11346 * Transfer any jaddrefs to the list to be freed with
11347 * the bitmap if we're handling a removed file.
11349 if (refhd == NULL) {
11350 wk->wk_state |= COMPLETE;
11351 free_jaddref(jaddref);
11353 WORKLIST_INSERT(refhd, wk);
11357 panic("handle_bufwait: Unknown type %p(%s)",
11358 wk, TYPENAME(wk->wk_type));
11365 * Called from within softdep_disk_write_complete above to restore
11366 * in-memory inode block contents to their most up-to-date state. Note
11367 * that this routine is always called from interrupt level with further
11368 * interrupts from this device blocked.
11370 * If the write did not succeed, we will do all the roll-forward
11371 * operations, but we will not take the actions that will allow its
11372 * dependencies to be processed.
11375 handle_written_inodeblock(inodedep, bp, flags)
11376 struct inodedep *inodedep;
11377 struct buf *bp; /* buffer containing the inode block */
11380 struct freefile *freefile;
11381 struct allocdirect *adp, *nextadp;
11382 struct ufs1_dinode *dp1 = NULL;
11383 struct ufs2_dinode *dp2 = NULL;
11384 struct workhead wkhd;
11385 int hadchanges, fstype;
11391 if ((inodedep->id_state & IOSTARTED) == 0)
11392 panic("handle_written_inodeblock: not started");
11393 inodedep->id_state &= ~IOSTARTED;
11394 if (inodedep->id_fs->fs_magic == FS_UFS1_MAGIC) {
11396 dp1 = (struct ufs1_dinode *)bp->b_data +
11397 ino_to_fsbo(inodedep->id_fs, inodedep->id_ino);
11398 freelink = dp1->di_freelink;
11401 dp2 = (struct ufs2_dinode *)bp->b_data +
11402 ino_to_fsbo(inodedep->id_fs, inodedep->id_ino);
11403 freelink = dp2->di_freelink;
11406 * Leave this inodeblock dirty until it's in the list.
11408 if ((inodedep->id_state & (UNLINKED | UNLINKONLIST)) == UNLINKED &&
11409 (flags & WRITESUCCEEDED)) {
11410 struct inodedep *inon;
11412 inon = TAILQ_NEXT(inodedep, id_unlinked);
11413 if ((inon == NULL && freelink == 0) ||
11414 (inon && inon->id_ino == freelink)) {
11416 inon->id_state |= UNLINKPREV;
11417 inodedep->id_state |= UNLINKNEXT;
11422 * If we had to rollback the inode allocation because of
11423 * bitmaps being incomplete, then simply restore it.
11424 * Keep the block dirty so that it will not be reclaimed until
11425 * all associated dependencies have been cleared and the
11426 * corresponding updates written to disk.
11428 if (inodedep->id_savedino1 != NULL) {
11430 if (fstype == UFS1)
11431 *dp1 = *inodedep->id_savedino1;
11433 *dp2 = *inodedep->id_savedino2;
11434 free(inodedep->id_savedino1, M_SAVEDINO);
11435 inodedep->id_savedino1 = NULL;
11436 if ((bp->b_flags & B_DELWRI) == 0)
11437 stat_inode_bitmap++;
11440 * If the inode is clear here and GOINGAWAY it will never
11441 * be written. Process the bufwait and clear any pending
11442 * work which may include the freefile.
11444 if (inodedep->id_state & GOINGAWAY)
11448 if (flags & WRITESUCCEEDED)
11449 inodedep->id_state |= COMPLETE;
11451 * Roll forward anything that had to be rolled back before
11452 * the inode could be updated.
11454 for (adp = TAILQ_FIRST(&inodedep->id_inoupdt); adp; adp = nextadp) {
11455 nextadp = TAILQ_NEXT(adp, ad_next);
11456 if (adp->ad_state & ATTACHED)
11457 panic("handle_written_inodeblock: new entry");
11458 if (fstype == UFS1) {
11459 if (adp->ad_offset < NDADDR) {
11460 if (dp1->di_db[adp->ad_offset]!=adp->ad_oldblkno)
11461 panic("%s %s #%jd mismatch %d != %jd",
11462 "handle_written_inodeblock:",
11464 (intmax_t)adp->ad_offset,
11465 dp1->di_db[adp->ad_offset],
11466 (intmax_t)adp->ad_oldblkno);
11467 dp1->di_db[adp->ad_offset] = adp->ad_newblkno;
11469 if (dp1->di_ib[adp->ad_offset - NDADDR] != 0)
11470 panic("%s: %s #%jd allocated as %d",
11471 "handle_written_inodeblock",
11472 "indirect pointer",
11473 (intmax_t)adp->ad_offset - NDADDR,
11474 dp1->di_ib[adp->ad_offset - NDADDR]);
11475 dp1->di_ib[adp->ad_offset - NDADDR] =
11479 if (adp->ad_offset < NDADDR) {
11480 if (dp2->di_db[adp->ad_offset]!=adp->ad_oldblkno)
11481 panic("%s: %s #%jd %s %jd != %jd",
11482 "handle_written_inodeblock",
11484 (intmax_t)adp->ad_offset, "mismatch",
11485 (intmax_t)dp2->di_db[adp->ad_offset],
11486 (intmax_t)adp->ad_oldblkno);
11487 dp2->di_db[adp->ad_offset] = adp->ad_newblkno;
11489 if (dp2->di_ib[adp->ad_offset - NDADDR] != 0)
11490 panic("%s: %s #%jd allocated as %jd",
11491 "handle_written_inodeblock",
11492 "indirect pointer",
11493 (intmax_t)adp->ad_offset - NDADDR,
11495 dp2->di_ib[adp->ad_offset - NDADDR]);
11496 dp2->di_ib[adp->ad_offset - NDADDR] =
11500 adp->ad_state &= ~UNDONE;
11501 adp->ad_state |= ATTACHED;
11504 for (adp = TAILQ_FIRST(&inodedep->id_extupdt); adp; adp = nextadp) {
11505 nextadp = TAILQ_NEXT(adp, ad_next);
11506 if (adp->ad_state & ATTACHED)
11507 panic("handle_written_inodeblock: new entry");
11508 if (dp2->di_extb[adp->ad_offset] != adp->ad_oldblkno)
11509 panic("%s: direct pointers #%jd %s %jd != %jd",
11510 "handle_written_inodeblock",
11511 (intmax_t)adp->ad_offset, "mismatch",
11512 (intmax_t)dp2->di_extb[adp->ad_offset],
11513 (intmax_t)adp->ad_oldblkno);
11514 dp2->di_extb[adp->ad_offset] = adp->ad_newblkno;
11515 adp->ad_state &= ~UNDONE;
11516 adp->ad_state |= ATTACHED;
11519 if (hadchanges && (bp->b_flags & B_DELWRI) == 0)
11520 stat_direct_blk_ptrs++;
11522 * Reset the file size to its most up-to-date value.
11524 if (inodedep->id_savedsize == -1 || inodedep->id_savedextsize == -1)
11525 panic("handle_written_inodeblock: bad size");
11526 if (inodedep->id_savednlink > LINK_MAX)
11527 panic("handle_written_inodeblock: Invalid link count "
11528 "%d for inodedep %p", inodedep->id_savednlink, inodedep);
11529 if (fstype == UFS1) {
11530 if (dp1->di_nlink != inodedep->id_savednlink) {
11531 dp1->di_nlink = inodedep->id_savednlink;
11534 if (dp1->di_size != inodedep->id_savedsize) {
11535 dp1->di_size = inodedep->id_savedsize;
11539 if (dp2->di_nlink != inodedep->id_savednlink) {
11540 dp2->di_nlink = inodedep->id_savednlink;
11543 if (dp2->di_size != inodedep->id_savedsize) {
11544 dp2->di_size = inodedep->id_savedsize;
11547 if (dp2->di_extsize != inodedep->id_savedextsize) {
11548 dp2->di_extsize = inodedep->id_savedextsize;
11552 inodedep->id_savedsize = -1;
11553 inodedep->id_savedextsize = -1;
11554 inodedep->id_savednlink = -1;
11556 * If there were any rollbacks in the inode block, then it must be
11557 * marked dirty so that its will eventually get written back in
11558 * its correct form.
11564 * If the write did not succeed, we have done all the roll-forward
11565 * operations, but we cannot take the actions that will allow its
11566 * dependencies to be processed.
11568 if ((flags & WRITESUCCEEDED) == 0)
11569 return (hadchanges);
11571 * Process any allocdirects that completed during the update.
11573 if ((adp = TAILQ_FIRST(&inodedep->id_inoupdt)) != NULL)
11574 handle_allocdirect_partdone(adp, &wkhd);
11575 if ((adp = TAILQ_FIRST(&inodedep->id_extupdt)) != NULL)
11576 handle_allocdirect_partdone(adp, &wkhd);
11578 * Process deallocations that were held pending until the
11579 * inode had been written to disk. Freeing of the inode
11580 * is delayed until after all blocks have been freed to
11581 * avoid creation of new <vfsid, inum, lbn> triples
11582 * before the old ones have been deleted. Completely
11583 * unlinked inodes are not processed until the unlinked
11584 * inode list is written or the last reference is removed.
11586 if ((inodedep->id_state & (UNLINKED | UNLINKONLIST)) != UNLINKED) {
11587 freefile = handle_bufwait(inodedep, NULL);
11588 if (freefile && !LIST_EMPTY(&wkhd)) {
11589 WORKLIST_INSERT(&wkhd, &freefile->fx_list);
11594 * Move rolled forward dependency completions to the bufwait list
11595 * now that those that were already written have been processed.
11597 if (!LIST_EMPTY(&wkhd) && hadchanges == 0)
11598 panic("handle_written_inodeblock: bufwait but no changes");
11599 jwork_move(&inodedep->id_bufwait, &wkhd);
11601 if (freefile != NULL) {
11603 * If the inode is goingaway it was never written. Fake up
11604 * the state here so free_inodedep() can succeed.
11606 if (inodedep->id_state & GOINGAWAY)
11607 inodedep->id_state |= COMPLETE | DEPCOMPLETE;
11608 if (free_inodedep(inodedep) == 0)
11609 panic("handle_written_inodeblock: live inodedep %p",
11611 add_to_worklist(&freefile->fx_list, 0);
11616 * If no outstanding dependencies, free it.
11618 if (free_inodedep(inodedep) ||
11619 (TAILQ_FIRST(&inodedep->id_inoreflst) == 0 &&
11620 TAILQ_FIRST(&inodedep->id_inoupdt) == 0 &&
11621 TAILQ_FIRST(&inodedep->id_extupdt) == 0 &&
11622 LIST_FIRST(&inodedep->id_bufwait) == 0))
11624 return (hadchanges);
11628 * Perform needed roll-forwards and kick off any dependencies that
11629 * can now be processed.
11631 * If the write did not succeed, we will do all the roll-forward
11632 * operations, but we will not take the actions that will allow its
11633 * dependencies to be processed.
11636 handle_written_indirdep(indirdep, bp, bpp, flags)
11637 struct indirdep *indirdep;
11642 struct allocindir *aip;
11646 if (indirdep->ir_state & GOINGAWAY)
11647 panic("handle_written_indirdep: indirdep gone");
11648 if ((indirdep->ir_state & IOSTARTED) == 0)
11649 panic("handle_written_indirdep: IO not started");
11652 * If there were rollbacks revert them here.
11654 if (indirdep->ir_saveddata) {
11655 bcopy(indirdep->ir_saveddata, bp->b_data, bp->b_bcount);
11656 if (TAILQ_EMPTY(&indirdep->ir_trunc)) {
11657 free(indirdep->ir_saveddata, M_INDIRDEP);
11658 indirdep->ir_saveddata = NULL;
11662 indirdep->ir_state &= ~(UNDONE | IOSTARTED);
11663 indirdep->ir_state |= ATTACHED;
11665 * If the write did not succeed, we have done all the roll-forward
11666 * operations, but we cannot take the actions that will allow its
11667 * dependencies to be processed.
11669 if ((flags & WRITESUCCEEDED) == 0) {
11670 stat_indir_blk_ptrs++;
11675 * Move allocindirs with written pointers to the completehd if
11676 * the indirdep's pointer is not yet written. Otherwise
11679 while ((aip = LIST_FIRST(&indirdep->ir_writehd)) != NULL) {
11680 LIST_REMOVE(aip, ai_next);
11681 if ((indirdep->ir_state & DEPCOMPLETE) == 0) {
11682 LIST_INSERT_HEAD(&indirdep->ir_completehd, aip,
11684 newblk_freefrag(&aip->ai_block);
11687 free_newblk(&aip->ai_block);
11690 * Move allocindirs that have finished dependency processing from
11691 * the done list to the write list after updating the pointers.
11693 if (TAILQ_EMPTY(&indirdep->ir_trunc)) {
11694 while ((aip = LIST_FIRST(&indirdep->ir_donehd)) != NULL) {
11695 handle_allocindir_partdone(aip);
11696 if (aip == LIST_FIRST(&indirdep->ir_donehd))
11697 panic("disk_write_complete: not gone");
11702 * Preserve the indirdep if there were any changes or if it is not
11703 * yet valid on disk.
11706 stat_indir_blk_ptrs++;
11711 * If there were no changes we can discard the savedbp and detach
11712 * ourselves from the buf. We are only carrying completed pointers
11715 sbp = indirdep->ir_savebp;
11716 sbp->b_flags |= B_INVAL | B_NOCACHE;
11717 indirdep->ir_savebp = NULL;
11718 indirdep->ir_bp = NULL;
11720 panic("handle_written_indirdep: bp already exists.");
11723 * The indirdep may not be freed until its parent points at it.
11725 if (indirdep->ir_state & DEPCOMPLETE)
11726 free_indirdep(indirdep);
11732 * Process a diradd entry after its dependent inode has been written.
11733 * This routine must be called with splbio interrupts blocked.
11736 diradd_inode_written(dap, inodedep)
11737 struct diradd *dap;
11738 struct inodedep *inodedep;
11741 dap->da_state |= COMPLETE;
11742 complete_diradd(dap);
11743 WORKLIST_INSERT(&inodedep->id_pendinghd, &dap->da_list);
11747 * Returns true if the bmsafemap will have rollbacks when written. Must only
11748 * be called with the per-filesystem lock and the buf lock on the cg held.
11751 bmsafemap_backgroundwrite(bmsafemap, bp)
11752 struct bmsafemap *bmsafemap;
11757 LOCK_OWNED(VFSTOUFS(bmsafemap->sm_list.wk_mp));
11758 dirty = !LIST_EMPTY(&bmsafemap->sm_jaddrefhd) |
11759 !LIST_EMPTY(&bmsafemap->sm_jnewblkhd);
11761 * If we're initiating a background write we need to process the
11762 * rollbacks as they exist now, not as they exist when IO starts.
11763 * No other consumers will look at the contents of the shadowed
11764 * buf so this is safe to do here.
11766 if (bp->b_xflags & BX_BKGRDMARKER)
11767 initiate_write_bmsafemap(bmsafemap, bp);
11773 * Re-apply an allocation when a cg write is complete.
11776 jnewblk_rollforward(jnewblk, fs, cgp, blksfree)
11777 struct jnewblk *jnewblk;
11782 ufs1_daddr_t fragno;
11783 ufs2_daddr_t blkno;
11789 cgbno = dtogd(fs, jnewblk->jn_blkno);
11790 for (i = jnewblk->jn_oldfrags; i < jnewblk->jn_frags; i++) {
11791 if (isclr(blksfree, cgbno + i))
11792 panic("jnewblk_rollforward: re-allocated fragment");
11795 if (frags == fs->fs_frag) {
11796 blkno = fragstoblks(fs, cgbno);
11797 ffs_clrblock(fs, blksfree, (long)blkno);
11798 ffs_clusteracct(fs, cgp, blkno, -1);
11799 cgp->cg_cs.cs_nbfree--;
11801 bbase = cgbno - fragnum(fs, cgbno);
11802 cgbno += jnewblk->jn_oldfrags;
11803 /* If a complete block had been reassembled, account for it. */
11804 fragno = fragstoblks(fs, bbase);
11805 if (ffs_isblock(fs, blksfree, fragno)) {
11806 cgp->cg_cs.cs_nffree += fs->fs_frag;
11807 ffs_clusteracct(fs, cgp, fragno, -1);
11808 cgp->cg_cs.cs_nbfree--;
11810 /* Decrement the old frags. */
11811 blk = blkmap(fs, blksfree, bbase);
11812 ffs_fragacct(fs, blk, cgp->cg_frsum, -1);
11813 /* Allocate the fragment */
11814 for (i = 0; i < frags; i++)
11815 clrbit(blksfree, cgbno + i);
11816 cgp->cg_cs.cs_nffree -= frags;
11817 /* Add back in counts associated with the new frags */
11818 blk = blkmap(fs, blksfree, bbase);
11819 ffs_fragacct(fs, blk, cgp->cg_frsum, 1);
11825 * Complete a write to a bmsafemap structure. Roll forward any bitmap
11826 * changes if it's not a background write. Set all written dependencies
11827 * to DEPCOMPLETE and free the structure if possible.
11829 * If the write did not succeed, we will do all the roll-forward
11830 * operations, but we will not take the actions that will allow its
11831 * dependencies to be processed.
11834 handle_written_bmsafemap(bmsafemap, bp, flags)
11835 struct bmsafemap *bmsafemap;
11839 struct newblk *newblk;
11840 struct inodedep *inodedep;
11841 struct jaddref *jaddref, *jatmp;
11842 struct jnewblk *jnewblk, *jntmp;
11843 struct ufsmount *ump;
11852 if ((bmsafemap->sm_state & IOSTARTED) == 0)
11853 panic("handle_written_bmsafemap: Not started\n");
11854 ump = VFSTOUFS(bmsafemap->sm_list.wk_mp);
11856 bmsafemap->sm_state &= ~IOSTARTED;
11857 foreground = (bp->b_xflags & BX_BKGRDMARKER) == 0;
11859 * If write was successful, release journal work that was waiting
11860 * on the write. Otherwise move the work back.
11862 if (flags & WRITESUCCEEDED)
11863 handle_jwork(&bmsafemap->sm_freewr);
11865 LIST_CONCAT(&bmsafemap->sm_freehd, &bmsafemap->sm_freewr,
11866 worklist, wk_list);
11869 * Restore unwritten inode allocation pending jaddref writes.
11871 if (!LIST_EMPTY(&bmsafemap->sm_jaddrefhd)) {
11872 cgp = (struct cg *)bp->b_data;
11873 fs = VFSTOUFS(bmsafemap->sm_list.wk_mp)->um_fs;
11874 inosused = cg_inosused(cgp);
11875 LIST_FOREACH_SAFE(jaddref, &bmsafemap->sm_jaddrefhd,
11876 ja_bmdeps, jatmp) {
11877 if ((jaddref->ja_state & UNDONE) == 0)
11879 ino = jaddref->ja_ino % fs->fs_ipg;
11880 if (isset(inosused, ino))
11881 panic("handle_written_bmsafemap: "
11882 "re-allocated inode");
11883 /* Do the roll-forward only if it's a real copy. */
11885 if ((jaddref->ja_mode & IFMT) == IFDIR)
11886 cgp->cg_cs.cs_ndir++;
11887 cgp->cg_cs.cs_nifree--;
11888 setbit(inosused, ino);
11891 jaddref->ja_state &= ~UNDONE;
11892 jaddref->ja_state |= ATTACHED;
11893 free_jaddref(jaddref);
11897 * Restore any block allocations which are pending journal writes.
11899 if (LIST_FIRST(&bmsafemap->sm_jnewblkhd) != NULL) {
11900 cgp = (struct cg *)bp->b_data;
11901 fs = VFSTOUFS(bmsafemap->sm_list.wk_mp)->um_fs;
11902 blksfree = cg_blksfree(cgp);
11903 LIST_FOREACH_SAFE(jnewblk, &bmsafemap->sm_jnewblkhd, jn_deps,
11905 if ((jnewblk->jn_state & UNDONE) == 0)
11907 /* Do the roll-forward only if it's a real copy. */
11909 jnewblk_rollforward(jnewblk, fs, cgp, blksfree))
11911 jnewblk->jn_state &= ~(UNDONE | NEWBLOCK);
11912 jnewblk->jn_state |= ATTACHED;
11913 free_jnewblk(jnewblk);
11917 * If the write did not succeed, we have done all the roll-forward
11918 * operations, but we cannot take the actions that will allow its
11919 * dependencies to be processed.
11921 if ((flags & WRITESUCCEEDED) == 0) {
11922 LIST_CONCAT(&bmsafemap->sm_newblkhd, &bmsafemap->sm_newblkwr,
11924 LIST_CONCAT(&bmsafemap->sm_freehd, &bmsafemap->sm_freewr,
11925 worklist, wk_list);
11930 while ((newblk = LIST_FIRST(&bmsafemap->sm_newblkwr))) {
11931 newblk->nb_state |= DEPCOMPLETE;
11932 newblk->nb_state &= ~ONDEPLIST;
11933 newblk->nb_bmsafemap = NULL;
11934 LIST_REMOVE(newblk, nb_deps);
11935 if (newblk->nb_list.wk_type == D_ALLOCDIRECT)
11936 handle_allocdirect_partdone(
11937 WK_ALLOCDIRECT(&newblk->nb_list), NULL);
11938 else if (newblk->nb_list.wk_type == D_ALLOCINDIR)
11939 handle_allocindir_partdone(
11940 WK_ALLOCINDIR(&newblk->nb_list));
11941 else if (newblk->nb_list.wk_type != D_NEWBLK)
11942 panic("handle_written_bmsafemap: Unexpected type: %s",
11943 TYPENAME(newblk->nb_list.wk_type));
11945 while ((inodedep = LIST_FIRST(&bmsafemap->sm_inodedepwr)) != NULL) {
11946 inodedep->id_state |= DEPCOMPLETE;
11947 inodedep->id_state &= ~ONDEPLIST;
11948 LIST_REMOVE(inodedep, id_deps);
11949 inodedep->id_bmsafemap = NULL;
11951 LIST_REMOVE(bmsafemap, sm_next);
11952 if (chgs == 0 && LIST_EMPTY(&bmsafemap->sm_jaddrefhd) &&
11953 LIST_EMPTY(&bmsafemap->sm_jnewblkhd) &&
11954 LIST_EMPTY(&bmsafemap->sm_newblkhd) &&
11955 LIST_EMPTY(&bmsafemap->sm_inodedephd) &&
11956 LIST_EMPTY(&bmsafemap->sm_freehd)) {
11957 LIST_REMOVE(bmsafemap, sm_hash);
11958 WORKITEM_FREE(bmsafemap, D_BMSAFEMAP);
11961 LIST_INSERT_HEAD(&ump->softdep_dirtycg, bmsafemap, sm_next);
11968 * Try to free a mkdir dependency.
11971 complete_mkdir(mkdir)
11972 struct mkdir *mkdir;
11974 struct diradd *dap;
11976 if ((mkdir->md_state & ALLCOMPLETE) != ALLCOMPLETE)
11978 LIST_REMOVE(mkdir, md_mkdirs);
11979 dap = mkdir->md_diradd;
11980 dap->da_state &= ~(mkdir->md_state & (MKDIR_PARENT | MKDIR_BODY));
11981 if ((dap->da_state & (MKDIR_PARENT | MKDIR_BODY)) == 0) {
11982 dap->da_state |= DEPCOMPLETE;
11983 complete_diradd(dap);
11985 WORKITEM_FREE(mkdir, D_MKDIR);
11989 * Handle the completion of a mkdir dependency.
11992 handle_written_mkdir(mkdir, type)
11993 struct mkdir *mkdir;
11997 if ((mkdir->md_state & (MKDIR_PARENT | MKDIR_BODY)) != type)
11998 panic("handle_written_mkdir: bad type");
11999 mkdir->md_state |= COMPLETE;
12000 complete_mkdir(mkdir);
12004 free_pagedep(pagedep)
12005 struct pagedep *pagedep;
12009 if (pagedep->pd_state & NEWBLOCK)
12011 if (!LIST_EMPTY(&pagedep->pd_dirremhd))
12013 for (i = 0; i < DAHASHSZ; i++)
12014 if (!LIST_EMPTY(&pagedep->pd_diraddhd[i]))
12016 if (!LIST_EMPTY(&pagedep->pd_pendinghd))
12018 if (!LIST_EMPTY(&pagedep->pd_jmvrefhd))
12020 if (pagedep->pd_state & ONWORKLIST)
12021 WORKLIST_REMOVE(&pagedep->pd_list);
12022 LIST_REMOVE(pagedep, pd_hash);
12023 WORKITEM_FREE(pagedep, D_PAGEDEP);
12029 * Called from within softdep_disk_write_complete above.
12030 * A write operation was just completed. Removed inodes can
12031 * now be freed and associated block pointers may be committed.
12032 * Note that this routine is always called from interrupt level
12033 * with further interrupts from this device blocked.
12035 * If the write did not succeed, we will do all the roll-forward
12036 * operations, but we will not take the actions that will allow its
12037 * dependencies to be processed.
12040 handle_written_filepage(pagedep, bp, flags)
12041 struct pagedep *pagedep;
12042 struct buf *bp; /* buffer containing the written page */
12045 struct dirrem *dirrem;
12046 struct diradd *dap, *nextdap;
12050 if ((pagedep->pd_state & IOSTARTED) == 0)
12051 panic("handle_written_filepage: not started");
12052 pagedep->pd_state &= ~IOSTARTED;
12053 if ((flags & WRITESUCCEEDED) == 0)
12056 * Process any directory removals that have been committed.
12058 while ((dirrem = LIST_FIRST(&pagedep->pd_dirremhd)) != NULL) {
12059 LIST_REMOVE(dirrem, dm_next);
12060 dirrem->dm_state |= COMPLETE;
12061 dirrem->dm_dirinum = pagedep->pd_ino;
12062 KASSERT(LIST_EMPTY(&dirrem->dm_jremrefhd),
12063 ("handle_written_filepage: Journal entries not written."));
12064 add_to_worklist(&dirrem->dm_list, 0);
12067 * Free any directory additions that have been committed.
12068 * If it is a newly allocated block, we have to wait until
12069 * the on-disk directory inode claims the new block.
12071 if ((pagedep->pd_state & NEWBLOCK) == 0)
12072 while ((dap = LIST_FIRST(&pagedep->pd_pendinghd)) != NULL)
12073 free_diradd(dap, NULL);
12076 * Uncommitted directory entries must be restored.
12078 for (chgs = 0, i = 0; i < DAHASHSZ; i++) {
12079 for (dap = LIST_FIRST(&pagedep->pd_diraddhd[i]); dap;
12081 nextdap = LIST_NEXT(dap, da_pdlist);
12082 if (dap->da_state & ATTACHED)
12083 panic("handle_written_filepage: attached");
12084 ep = (struct direct *)
12085 ((char *)bp->b_data + dap->da_offset);
12086 ep->d_ino = dap->da_newinum;
12087 dap->da_state &= ~UNDONE;
12088 dap->da_state |= ATTACHED;
12091 * If the inode referenced by the directory has
12092 * been written out, then the dependency can be
12093 * moved to the pending list.
12095 if ((dap->da_state & ALLCOMPLETE) == ALLCOMPLETE) {
12096 LIST_REMOVE(dap, da_pdlist);
12097 LIST_INSERT_HEAD(&pagedep->pd_pendinghd, dap,
12103 * If there were any rollbacks in the directory, then it must be
12104 * marked dirty so that its will eventually get written back in
12105 * its correct form.
12107 if (chgs || (flags & WRITESUCCEEDED) == 0) {
12108 if ((bp->b_flags & B_DELWRI) == 0)
12114 * If we are not waiting for a new directory block to be
12115 * claimed by its inode, then the pagedep will be freed.
12116 * Otherwise it will remain to track any new entries on
12117 * the page in case they are fsync'ed.
12119 free_pagedep(pagedep);
12124 * Writing back in-core inode structures.
12126 * The filesystem only accesses an inode's contents when it occupies an
12127 * "in-core" inode structure. These "in-core" structures are separate from
12128 * the page frames used to cache inode blocks. Only the latter are
12129 * transferred to/from the disk. So, when the updated contents of the
12130 * "in-core" inode structure are copied to the corresponding in-memory inode
12131 * block, the dependencies are also transferred. The following procedure is
12132 * called when copying a dirty "in-core" inode to a cached inode block.
12136 * Called when an inode is loaded from disk. If the effective link count
12137 * differed from the actual link count when it was last flushed, then we
12138 * need to ensure that the correct effective link count is put back.
12141 softdep_load_inodeblock(ip)
12142 struct inode *ip; /* the "in_core" copy of the inode */
12144 struct inodedep *inodedep;
12145 struct ufsmount *ump;
12148 KASSERT(MOUNTEDSOFTDEP(UFSTOVFS(ump)) != 0,
12149 ("softdep_load_inodeblock called on non-softdep filesystem"));
12151 * Check for alternate nlink count.
12153 ip->i_effnlink = ip->i_nlink;
12155 if (inodedep_lookup(UFSTOVFS(ump), ip->i_number, 0, &inodedep) == 0) {
12159 ip->i_effnlink -= inodedep->id_nlinkdelta;
12164 * This routine is called just before the "in-core" inode
12165 * information is to be copied to the in-memory inode block.
12166 * Recall that an inode block contains several inodes. If
12167 * the force flag is set, then the dependencies will be
12168 * cleared so that the update can always be made. Note that
12169 * the buffer is locked when this routine is called, so we
12170 * will never be in the middle of writing the inode block
12174 softdep_update_inodeblock(ip, bp, waitfor)
12175 struct inode *ip; /* the "in_core" copy of the inode */
12176 struct buf *bp; /* the buffer containing the inode block */
12177 int waitfor; /* nonzero => update must be allowed */
12179 struct inodedep *inodedep;
12180 struct inoref *inoref;
12181 struct ufsmount *ump;
12182 struct worklist *wk;
12189 mp = UFSTOVFS(ump);
12190 KASSERT(MOUNTEDSOFTDEP(mp) != 0,
12191 ("softdep_update_inodeblock called on non-softdep filesystem"));
12194 * Preserve the freelink that is on disk. clear_unlinked_inodedep()
12195 * does not have access to the in-core ip so must write directly into
12196 * the inode block buffer when setting freelink.
12198 if (fs->fs_magic == FS_UFS1_MAGIC)
12199 DIP_SET(ip, i_freelink, ((struct ufs1_dinode *)bp->b_data +
12200 ino_to_fsbo(fs, ip->i_number))->di_freelink);
12202 DIP_SET(ip, i_freelink, ((struct ufs2_dinode *)bp->b_data +
12203 ino_to_fsbo(fs, ip->i_number))->di_freelink);
12205 * If the effective link count is not equal to the actual link
12206 * count, then we must track the difference in an inodedep while
12207 * the inode is (potentially) tossed out of the cache. Otherwise,
12208 * if there is no existing inodedep, then there are no dependencies
12213 if (inodedep_lookup(mp, ip->i_number, 0, &inodedep) == 0) {
12215 if (ip->i_effnlink != ip->i_nlink)
12216 panic("softdep_update_inodeblock: bad link count");
12219 if (inodedep->id_nlinkdelta != ip->i_nlink - ip->i_effnlink)
12220 panic("softdep_update_inodeblock: bad delta");
12222 * If we're flushing all dependencies we must also move any waiting
12223 * for journal writes onto the bufwait list prior to I/O.
12226 TAILQ_FOREACH(inoref, &inodedep->id_inoreflst, if_deps) {
12227 if ((inoref->if_state & (DEPCOMPLETE | GOINGAWAY))
12229 jwait(&inoref->if_list, MNT_WAIT);
12235 * Changes have been initiated. Anything depending on these
12236 * changes cannot occur until this inode has been written.
12238 inodedep->id_state &= ~COMPLETE;
12239 if ((inodedep->id_state & ONWORKLIST) == 0)
12240 WORKLIST_INSERT(&bp->b_dep, &inodedep->id_list);
12242 * Any new dependencies associated with the incore inode must
12243 * now be moved to the list associated with the buffer holding
12244 * the in-memory copy of the inode. Once merged process any
12245 * allocdirects that are completed by the merger.
12247 merge_inode_lists(&inodedep->id_newinoupdt, &inodedep->id_inoupdt);
12248 if (!TAILQ_EMPTY(&inodedep->id_inoupdt))
12249 handle_allocdirect_partdone(TAILQ_FIRST(&inodedep->id_inoupdt),
12251 merge_inode_lists(&inodedep->id_newextupdt, &inodedep->id_extupdt);
12252 if (!TAILQ_EMPTY(&inodedep->id_extupdt))
12253 handle_allocdirect_partdone(TAILQ_FIRST(&inodedep->id_extupdt),
12256 * Now that the inode has been pushed into the buffer, the
12257 * operations dependent on the inode being written to disk
12258 * can be moved to the id_bufwait so that they will be
12259 * processed when the buffer I/O completes.
12261 while ((wk = LIST_FIRST(&inodedep->id_inowait)) != NULL) {
12262 WORKLIST_REMOVE(wk);
12263 WORKLIST_INSERT(&inodedep->id_bufwait, wk);
12266 * Newly allocated inodes cannot be written until the bitmap
12267 * that allocates them have been written (indicated by
12268 * DEPCOMPLETE being set in id_state). If we are doing a
12269 * forced sync (e.g., an fsync on a file), we force the bitmap
12270 * to be written so that the update can be done.
12272 if (waitfor == 0) {
12277 if ((inodedep->id_state & (DEPCOMPLETE | GOINGAWAY)) != 0) {
12281 ibp = inodedep->id_bmsafemap->sm_buf;
12282 ibp = getdirtybuf(ibp, LOCK_PTR(ump), MNT_WAIT);
12285 * If ibp came back as NULL, the dependency could have been
12286 * freed while we slept. Look it up again, and check to see
12287 * that it has completed.
12289 if (inodedep_lookup(mp, ip->i_number, 0, &inodedep) != 0)
12295 if ((error = bwrite(ibp)) != 0)
12296 softdep_error("softdep_update_inodeblock: bwrite", error);
12300 * Merge the a new inode dependency list (such as id_newinoupdt) into an
12301 * old inode dependency list (such as id_inoupdt). This routine must be
12302 * called with splbio interrupts blocked.
12305 merge_inode_lists(newlisthead, oldlisthead)
12306 struct allocdirectlst *newlisthead;
12307 struct allocdirectlst *oldlisthead;
12309 struct allocdirect *listadp, *newadp;
12311 newadp = TAILQ_FIRST(newlisthead);
12312 for (listadp = TAILQ_FIRST(oldlisthead); listadp && newadp;) {
12313 if (listadp->ad_offset < newadp->ad_offset) {
12314 listadp = TAILQ_NEXT(listadp, ad_next);
12317 TAILQ_REMOVE(newlisthead, newadp, ad_next);
12318 TAILQ_INSERT_BEFORE(listadp, newadp, ad_next);
12319 if (listadp->ad_offset == newadp->ad_offset) {
12320 allocdirect_merge(oldlisthead, newadp,
12324 newadp = TAILQ_FIRST(newlisthead);
12326 while ((newadp = TAILQ_FIRST(newlisthead)) != NULL) {
12327 TAILQ_REMOVE(newlisthead, newadp, ad_next);
12328 TAILQ_INSERT_TAIL(oldlisthead, newadp, ad_next);
12333 * If we are doing an fsync, then we must ensure that any directory
12334 * entries for the inode have been written after the inode gets to disk.
12338 struct vnode *vp; /* the "in_core" copy of the inode */
12340 struct inodedep *inodedep;
12341 struct pagedep *pagedep;
12342 struct inoref *inoref;
12343 struct ufsmount *ump;
12344 struct worklist *wk;
12345 struct diradd *dap;
12351 struct thread *td = curthread;
12352 int error, flushparent, pagedep_new_block;
12358 ump = VFSTOUFS(mp);
12360 if (MOUNTEDSOFTDEP(mp) == 0)
12364 if (inodedep_lookup(mp, ip->i_number, 0, &inodedep) == 0) {
12368 TAILQ_FOREACH(inoref, &inodedep->id_inoreflst, if_deps) {
12369 if ((inoref->if_state & (DEPCOMPLETE | GOINGAWAY))
12371 jwait(&inoref->if_list, MNT_WAIT);
12375 if (!LIST_EMPTY(&inodedep->id_inowait) ||
12376 !TAILQ_EMPTY(&inodedep->id_extupdt) ||
12377 !TAILQ_EMPTY(&inodedep->id_newextupdt) ||
12378 !TAILQ_EMPTY(&inodedep->id_inoupdt) ||
12379 !TAILQ_EMPTY(&inodedep->id_newinoupdt))
12380 panic("softdep_fsync: pending ops %p", inodedep);
12381 for (error = 0, flushparent = 0; ; ) {
12382 if ((wk = LIST_FIRST(&inodedep->id_pendinghd)) == NULL)
12384 if (wk->wk_type != D_DIRADD)
12385 panic("softdep_fsync: Unexpected type %s",
12386 TYPENAME(wk->wk_type));
12387 dap = WK_DIRADD(wk);
12389 * Flush our parent if this directory entry has a MKDIR_PARENT
12390 * dependency or is contained in a newly allocated block.
12392 if (dap->da_state & DIRCHG)
12393 pagedep = dap->da_previous->dm_pagedep;
12395 pagedep = dap->da_pagedep;
12396 parentino = pagedep->pd_ino;
12397 lbn = pagedep->pd_lbn;
12398 if ((dap->da_state & (MKDIR_BODY | COMPLETE)) != COMPLETE)
12399 panic("softdep_fsync: dirty");
12400 if ((dap->da_state & MKDIR_PARENT) ||
12401 (pagedep->pd_state & NEWBLOCK))
12406 * If we are being fsync'ed as part of vgone'ing this vnode,
12407 * then we will not be able to release and recover the
12408 * vnode below, so we just have to give up on writing its
12409 * directory entry out. It will eventually be written, just
12410 * not now, but then the user was not asking to have it
12411 * written, so we are not breaking any promises.
12413 if (vp->v_iflag & VI_DOOMED)
12416 * We prevent deadlock by always fetching inodes from the
12417 * root, moving down the directory tree. Thus, when fetching
12418 * our parent directory, we first try to get the lock. If
12419 * that fails, we must unlock ourselves before requesting
12420 * the lock on our parent. See the comment in ufs_lookup
12421 * for details on possible races.
12424 if (ffs_vgetf(mp, parentino, LK_NOWAIT | LK_EXCLUSIVE, &pvp,
12425 FFSV_FORCEINSMQ)) {
12426 error = vfs_busy(mp, MBF_NOWAIT);
12430 error = vfs_busy(mp, 0);
12431 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
12435 if (vp->v_iflag & VI_DOOMED) {
12441 error = ffs_vgetf(mp, parentino, LK_EXCLUSIVE,
12442 &pvp, FFSV_FORCEINSMQ);
12444 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
12445 if (vp->v_iflag & VI_DOOMED) {
12454 * All MKDIR_PARENT dependencies and all the NEWBLOCK pagedeps
12455 * that are contained in direct blocks will be resolved by
12456 * doing a ffs_update. Pagedeps contained in indirect blocks
12457 * may require a complete sync'ing of the directory. So, we
12458 * try the cheap and fast ffs_update first, and if that fails,
12459 * then we do the slower ffs_syncvnode of the directory.
12464 if ((error = ffs_update(pvp, 1)) != 0) {
12470 if (inodedep_lookup(mp, ip->i_number, 0, &inodedep) != 0) {
12471 if ((wk = LIST_FIRST(&inodedep->id_pendinghd)) != NULL) {
12472 if (wk->wk_type != D_DIRADD)
12473 panic("softdep_fsync: Unexpected type %s",
12474 TYPENAME(wk->wk_type));
12475 dap = WK_DIRADD(wk);
12476 if (dap->da_state & DIRCHG)
12477 pagedep = dap->da_previous->dm_pagedep;
12479 pagedep = dap->da_pagedep;
12480 pagedep_new_block = pagedep->pd_state & NEWBLOCK;
12483 if (pagedep_new_block && (error =
12484 ffs_syncvnode(pvp, MNT_WAIT, 0))) {
12494 * Flush directory page containing the inode's name.
12496 error = bread(pvp, lbn, blksize(fs, VTOI(pvp), lbn), td->td_ucred,
12499 error = bwrite(bp);
12506 if (inodedep_lookup(mp, ip->i_number, 0, &inodedep) == 0)
12514 * Flush all the dirty bitmaps associated with the block device
12515 * before flushing the rest of the dirty blocks so as to reduce
12516 * the number of dependencies that will have to be rolled back.
12521 softdep_fsync_mountdev(vp)
12524 struct buf *bp, *nbp;
12525 struct worklist *wk;
12528 if (!vn_isdisk(vp, NULL))
12529 panic("softdep_fsync_mountdev: vnode not a disk");
12530 bo = &vp->v_bufobj;
12533 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
12535 * If it is already scheduled, skip to the next buffer.
12537 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL))
12540 if ((bp->b_flags & B_DELWRI) == 0)
12541 panic("softdep_fsync_mountdev: not dirty");
12543 * We are only interested in bitmaps with outstanding
12546 if ((wk = LIST_FIRST(&bp->b_dep)) == NULL ||
12547 wk->wk_type != D_BMSAFEMAP ||
12548 (bp->b_vflags & BV_BKGRDINPROG)) {
12554 (void) bawrite(bp);
12562 * Sync all cylinder groups that were dirty at the time this function is
12563 * called. Newly dirtied cgs will be inserted before the sentinel. This
12564 * is used to flush freedep activity that may be holding up writes to a
12568 sync_cgs(mp, waitfor)
12572 struct bmsafemap *bmsafemap;
12573 struct bmsafemap *sentinel;
12574 struct ufsmount *ump;
12578 sentinel = malloc(sizeof(*sentinel), M_BMSAFEMAP, M_ZERO | M_WAITOK);
12579 sentinel->sm_cg = -1;
12580 ump = VFSTOUFS(mp);
12583 LIST_INSERT_HEAD(&ump->softdep_dirtycg, sentinel, sm_next);
12584 for (bmsafemap = LIST_NEXT(sentinel, sm_next); bmsafemap != NULL;
12585 bmsafemap = LIST_NEXT(sentinel, sm_next)) {
12586 /* Skip sentinels and cgs with no work to release. */
12587 if (bmsafemap->sm_cg == -1 ||
12588 (LIST_EMPTY(&bmsafemap->sm_freehd) &&
12589 LIST_EMPTY(&bmsafemap->sm_freewr))) {
12590 LIST_REMOVE(sentinel, sm_next);
12591 LIST_INSERT_AFTER(bmsafemap, sentinel, sm_next);
12595 * If we don't get the lock and we're waiting try again, if
12596 * not move on to the next buf and try to sync it.
12598 bp = getdirtybuf(bmsafemap->sm_buf, LOCK_PTR(ump), waitfor);
12599 if (bp == NULL && waitfor == MNT_WAIT)
12601 LIST_REMOVE(sentinel, sm_next);
12602 LIST_INSERT_AFTER(bmsafemap, sentinel, sm_next);
12606 if (waitfor == MNT_NOWAIT)
12609 error = bwrite(bp);
12614 LIST_REMOVE(sentinel, sm_next);
12616 free(sentinel, M_BMSAFEMAP);
12621 * This routine is called when we are trying to synchronously flush a
12622 * file. This routine must eliminate any filesystem metadata dependencies
12623 * so that the syncing routine can succeed.
12626 softdep_sync_metadata(struct vnode *vp)
12632 KASSERT(MOUNTEDSOFTDEP(vp->v_mount) != 0,
12633 ("softdep_sync_metadata called on non-softdep filesystem"));
12635 * Ensure that any direct block dependencies have been cleared,
12636 * truncations are started, and inode references are journaled.
12638 ACQUIRE_LOCK(VFSTOUFS(vp->v_mount));
12640 * Write all journal records to prevent rollbacks on devvp.
12642 if (vp->v_type == VCHR)
12643 softdep_flushjournal(vp->v_mount);
12644 error = flush_inodedep_deps(vp, vp->v_mount, ip->i_number);
12646 * Ensure that all truncates are written so we won't find deps on
12649 process_truncates(vp);
12650 FREE_LOCK(VFSTOUFS(vp->v_mount));
12656 * This routine is called when we are attempting to sync a buf with
12657 * dependencies. If waitfor is MNT_NOWAIT it attempts to schedule any
12658 * other IO it can but returns EBUSY if the buffer is not yet able to
12659 * be written. Dependencies which will not cause rollbacks will always
12663 softdep_sync_buf(struct vnode *vp, struct buf *bp, int waitfor)
12665 struct indirdep *indirdep;
12666 struct pagedep *pagedep;
12667 struct allocindir *aip;
12668 struct newblk *newblk;
12669 struct ufsmount *ump;
12671 struct worklist *wk;
12674 KASSERT(MOUNTEDSOFTDEP(vp->v_mount) != 0,
12675 ("softdep_sync_buf called on non-softdep filesystem"));
12677 * For VCHR we just don't want to force flush any dependencies that
12678 * will cause rollbacks.
12680 if (vp->v_type == VCHR) {
12681 if (waitfor == MNT_NOWAIT && softdep_count_dependencies(bp, 0))
12685 ump = VFSTOUFS(vp->v_mount);
12688 * As we hold the buffer locked, none of its dependencies
12693 LIST_FOREACH(wk, &bp->b_dep, wk_list) {
12694 switch (wk->wk_type) {
12696 case D_ALLOCDIRECT:
12698 newblk = WK_NEWBLK(wk);
12699 if (newblk->nb_jnewblk != NULL) {
12700 if (waitfor == MNT_NOWAIT) {
12704 jwait(&newblk->nb_jnewblk->jn_list, waitfor);
12707 if (newblk->nb_state & DEPCOMPLETE ||
12708 waitfor == MNT_NOWAIT)
12710 nbp = newblk->nb_bmsafemap->sm_buf;
12711 nbp = getdirtybuf(nbp, LOCK_PTR(ump), waitfor);
12715 if ((error = bwrite(nbp)) != 0)
12721 indirdep = WK_INDIRDEP(wk);
12722 if (waitfor == MNT_NOWAIT) {
12723 if (!TAILQ_EMPTY(&indirdep->ir_trunc) ||
12724 !LIST_EMPTY(&indirdep->ir_deplisthd)) {
12729 if (!TAILQ_EMPTY(&indirdep->ir_trunc))
12730 panic("softdep_sync_buf: truncation pending.");
12732 LIST_FOREACH(aip, &indirdep->ir_deplisthd, ai_next) {
12733 newblk = (struct newblk *)aip;
12734 if (newblk->nb_jnewblk != NULL) {
12735 jwait(&newblk->nb_jnewblk->jn_list,
12739 if (newblk->nb_state & DEPCOMPLETE)
12741 nbp = newblk->nb_bmsafemap->sm_buf;
12742 nbp = getdirtybuf(nbp, LOCK_PTR(ump), waitfor);
12746 if ((error = bwrite(nbp)) != 0)
12755 * Only flush directory entries in synchronous passes.
12757 if (waitfor != MNT_WAIT) {
12762 * While syncing snapshots, we must allow recursive
12767 * We are trying to sync a directory that may
12768 * have dependencies on both its own metadata
12769 * and/or dependencies on the inodes of any
12770 * recently allocated files. We walk its diradd
12771 * lists pushing out the associated inode.
12773 pagedep = WK_PAGEDEP(wk);
12774 for (i = 0; i < DAHASHSZ; i++) {
12775 if (LIST_FIRST(&pagedep->pd_diraddhd[i]) == 0)
12777 if ((error = flush_pagedep_deps(vp, wk->wk_mp,
12778 &pagedep->pd_diraddhd[i]))) {
12793 panic("softdep_sync_buf: Unknown type %s",
12794 TYPENAME(wk->wk_type));
12805 * Flush the dependencies associated with an inodedep.
12806 * Called with splbio blocked.
12809 flush_inodedep_deps(vp, mp, ino)
12814 struct inodedep *inodedep;
12815 struct inoref *inoref;
12816 struct ufsmount *ump;
12817 int error, waitfor;
12820 * This work is done in two passes. The first pass grabs most
12821 * of the buffers and begins asynchronously writing them. The
12822 * only way to wait for these asynchronous writes is to sleep
12823 * on the filesystem vnode which may stay busy for a long time
12824 * if the filesystem is active. So, instead, we make a second
12825 * pass over the dependencies blocking on each write. In the
12826 * usual case we will be blocking against a write that we
12827 * initiated, so when it is done the dependency will have been
12828 * resolved. Thus the second pass is expected to end quickly.
12829 * We give a brief window at the top of the loop to allow
12830 * any pending I/O to complete.
12832 ump = VFSTOUFS(mp);
12834 for (error = 0, waitfor = MNT_NOWAIT; ; ) {
12840 if (inodedep_lookup(mp, ino, 0, &inodedep) == 0)
12842 TAILQ_FOREACH(inoref, &inodedep->id_inoreflst, if_deps) {
12843 if ((inoref->if_state & (DEPCOMPLETE | GOINGAWAY))
12845 jwait(&inoref->if_list, MNT_WAIT);
12849 if (flush_deplist(&inodedep->id_inoupdt, waitfor, &error) ||
12850 flush_deplist(&inodedep->id_newinoupdt, waitfor, &error) ||
12851 flush_deplist(&inodedep->id_extupdt, waitfor, &error) ||
12852 flush_deplist(&inodedep->id_newextupdt, waitfor, &error))
12855 * If pass2, we are done, otherwise do pass 2.
12857 if (waitfor == MNT_WAIT)
12859 waitfor = MNT_WAIT;
12862 * Try freeing inodedep in case all dependencies have been removed.
12864 if (inodedep_lookup(mp, ino, 0, &inodedep) != 0)
12865 (void) free_inodedep(inodedep);
12870 * Flush an inode dependency list.
12871 * Called with splbio blocked.
12874 flush_deplist(listhead, waitfor, errorp)
12875 struct allocdirectlst *listhead;
12879 struct allocdirect *adp;
12880 struct newblk *newblk;
12881 struct ufsmount *ump;
12884 if ((adp = TAILQ_FIRST(listhead)) == NULL)
12886 ump = VFSTOUFS(adp->ad_list.wk_mp);
12888 TAILQ_FOREACH(adp, listhead, ad_next) {
12889 newblk = (struct newblk *)adp;
12890 if (newblk->nb_jnewblk != NULL) {
12891 jwait(&newblk->nb_jnewblk->jn_list, MNT_WAIT);
12894 if (newblk->nb_state & DEPCOMPLETE)
12896 bp = newblk->nb_bmsafemap->sm_buf;
12897 bp = getdirtybuf(bp, LOCK_PTR(ump), waitfor);
12899 if (waitfor == MNT_NOWAIT)
12904 if (waitfor == MNT_NOWAIT)
12907 *errorp = bwrite(bp);
12915 * Flush dependencies associated with an allocdirect block.
12918 flush_newblk_dep(vp, mp, lbn)
12923 struct newblk *newblk;
12924 struct ufsmount *ump;
12928 ufs2_daddr_t blkno;
12932 bo = &vp->v_bufobj;
12934 blkno = DIP(ip, i_db[lbn]);
12936 panic("flush_newblk_dep: Missing block");
12937 ump = VFSTOUFS(mp);
12940 * Loop until all dependencies related to this block are satisfied.
12941 * We must be careful to restart after each sleep in case a write
12942 * completes some part of this process for us.
12945 if (newblk_lookup(mp, blkno, 0, &newblk) == 0) {
12949 if (newblk->nb_list.wk_type != D_ALLOCDIRECT)
12950 panic("flush_newblk_deps: Bad newblk %p", newblk);
12952 * Flush the journal.
12954 if (newblk->nb_jnewblk != NULL) {
12955 jwait(&newblk->nb_jnewblk->jn_list, MNT_WAIT);
12959 * Write the bitmap dependency.
12961 if ((newblk->nb_state & DEPCOMPLETE) == 0) {
12962 bp = newblk->nb_bmsafemap->sm_buf;
12963 bp = getdirtybuf(bp, LOCK_PTR(ump), MNT_WAIT);
12967 error = bwrite(bp);
12974 * Write the buffer.
12978 bp = gbincore(bo, lbn);
12980 error = BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL |
12981 LK_INTERLOCK, BO_LOCKPTR(bo));
12982 if (error == ENOLCK) {
12985 continue; /* Slept, retry */
12988 break; /* Failed */
12989 if (bp->b_flags & B_DELWRI) {
12991 error = bwrite(bp);
12999 * We have to wait for the direct pointers to
13000 * point at the newdirblk before the dependency
13003 error = ffs_update(vp, 1);
13012 * Eliminate a pagedep dependency by flushing out all its diradd dependencies.
13013 * Called with splbio blocked.
13016 flush_pagedep_deps(pvp, mp, diraddhdp)
13019 struct diraddhd *diraddhdp;
13021 struct inodedep *inodedep;
13022 struct inoref *inoref;
13023 struct ufsmount *ump;
13024 struct diradd *dap;
13029 struct diraddhd unfinished;
13031 LIST_INIT(&unfinished);
13032 ump = VFSTOUFS(mp);
13035 while ((dap = LIST_FIRST(diraddhdp)) != NULL) {
13037 * Flush ourselves if this directory entry
13038 * has a MKDIR_PARENT dependency.
13040 if (dap->da_state & MKDIR_PARENT) {
13042 if ((error = ffs_update(pvp, 1)) != 0)
13046 * If that cleared dependencies, go on to next.
13048 if (dap != LIST_FIRST(diraddhdp))
13051 * All MKDIR_PARENT dependencies and all the
13052 * NEWBLOCK pagedeps that are contained in direct
13053 * blocks were resolved by doing above ffs_update.
13054 * Pagedeps contained in indirect blocks may
13055 * require a complete sync'ing of the directory.
13056 * We are in the midst of doing a complete sync,
13057 * so if they are not resolved in this pass we
13058 * defer them for now as they will be sync'ed by
13059 * our caller shortly.
13061 LIST_REMOVE(dap, da_pdlist);
13062 LIST_INSERT_HEAD(&unfinished, dap, da_pdlist);
13066 * A newly allocated directory must have its "." and
13067 * ".." entries written out before its name can be
13068 * committed in its parent.
13070 inum = dap->da_newinum;
13071 if (inodedep_lookup(UFSTOVFS(ump), inum, 0, &inodedep) == 0)
13072 panic("flush_pagedep_deps: lost inode1");
13074 * Wait for any pending journal adds to complete so we don't
13075 * cause rollbacks while syncing.
13077 TAILQ_FOREACH(inoref, &inodedep->id_inoreflst, if_deps) {
13078 if ((inoref->if_state & (DEPCOMPLETE | GOINGAWAY))
13080 jwait(&inoref->if_list, MNT_WAIT);
13084 if (dap->da_state & MKDIR_BODY) {
13086 if ((error = ffs_vgetf(mp, inum, LK_EXCLUSIVE, &vp,
13089 error = flush_newblk_dep(vp, mp, 0);
13091 * If we still have the dependency we might need to
13092 * update the vnode to sync the new link count to
13095 if (error == 0 && dap == LIST_FIRST(diraddhdp))
13096 error = ffs_update(vp, 1);
13102 * If that cleared dependencies, go on to next.
13104 if (dap != LIST_FIRST(diraddhdp))
13106 if (dap->da_state & MKDIR_BODY) {
13107 inodedep_lookup(UFSTOVFS(ump), inum, 0,
13109 panic("flush_pagedep_deps: MKDIR_BODY "
13110 "inodedep %p dap %p vp %p",
13111 inodedep, dap, vp);
13115 * Flush the inode on which the directory entry depends.
13116 * Having accounted for MKDIR_PARENT and MKDIR_BODY above,
13117 * the only remaining dependency is that the updated inode
13118 * count must get pushed to disk. The inode has already
13119 * been pushed into its inode buffer (via VOP_UPDATE) at
13120 * the time of the reference count change. So we need only
13121 * locate that buffer, ensure that there will be no rollback
13122 * caused by a bitmap dependency, then write the inode buffer.
13125 if (inodedep_lookup(UFSTOVFS(ump), inum, 0, &inodedep) == 0)
13126 panic("flush_pagedep_deps: lost inode");
13128 * If the inode still has bitmap dependencies,
13129 * push them to disk.
13131 if ((inodedep->id_state & (DEPCOMPLETE | GOINGAWAY)) == 0) {
13132 bp = inodedep->id_bmsafemap->sm_buf;
13133 bp = getdirtybuf(bp, LOCK_PTR(ump), MNT_WAIT);
13137 if ((error = bwrite(bp)) != 0)
13140 if (dap != LIST_FIRST(diraddhdp))
13144 * If the inode is still sitting in a buffer waiting
13145 * to be written or waiting for the link count to be
13146 * adjusted update it here to flush it to disk.
13148 if (dap == LIST_FIRST(diraddhdp)) {
13150 if ((error = ffs_vgetf(mp, inum, LK_EXCLUSIVE, &vp,
13153 error = ffs_update(vp, 1);
13160 * If we have failed to get rid of all the dependencies
13161 * then something is seriously wrong.
13163 if (dap == LIST_FIRST(diraddhdp)) {
13164 inodedep_lookup(UFSTOVFS(ump), inum, 0, &inodedep);
13165 panic("flush_pagedep_deps: failed to flush "
13166 "inodedep %p ino %ju dap %p",
13167 inodedep, (uintmax_t)inum, dap);
13172 while ((dap = LIST_FIRST(&unfinished)) != NULL) {
13173 LIST_REMOVE(dap, da_pdlist);
13174 LIST_INSERT_HEAD(diraddhdp, dap, da_pdlist);
13180 * A large burst of file addition or deletion activity can drive the
13181 * memory load excessively high. First attempt to slow things down
13182 * using the techniques below. If that fails, this routine requests
13183 * the offending operations to fall back to running synchronously
13184 * until the memory load returns to a reasonable level.
13187 softdep_slowdown(vp)
13190 struct ufsmount *ump;
13192 int max_softdeps_hard;
13194 KASSERT(MOUNTEDSOFTDEP(vp->v_mount) != 0,
13195 ("softdep_slowdown called on non-softdep filesystem"));
13196 ump = VFSTOUFS(vp->v_mount);
13200 * Check for journal space if needed.
13202 if (DOINGSUJ(vp)) {
13203 if (journal_space(ump, 0) == 0)
13207 * If the system is under its limits and our filesystem is
13208 * not responsible for more than our share of the usage and
13209 * we are not low on journal space, then no need to slow down.
13211 max_softdeps_hard = max_softdeps * 11 / 10;
13212 if (dep_current[D_DIRREM] < max_softdeps_hard / 2 &&
13213 dep_current[D_INODEDEP] < max_softdeps_hard &&
13214 dep_current[D_INDIRDEP] < max_softdeps_hard / 1000 &&
13215 dep_current[D_FREEBLKS] < max_softdeps_hard && jlow == 0 &&
13216 ump->softdep_curdeps[D_DIRREM] <
13217 (max_softdeps_hard / 2) / stat_flush_threads &&
13218 ump->softdep_curdeps[D_INODEDEP] <
13219 max_softdeps_hard / stat_flush_threads &&
13220 ump->softdep_curdeps[D_INDIRDEP] <
13221 (max_softdeps_hard / 1000) / stat_flush_threads &&
13222 ump->softdep_curdeps[D_FREEBLKS] <
13223 max_softdeps_hard / stat_flush_threads) {
13228 * If the journal is low or our filesystem is over its limit
13229 * then speedup the cleanup.
13231 if (ump->softdep_curdeps[D_INDIRDEP] <
13232 (max_softdeps_hard / 1000) / stat_flush_threads || jlow)
13233 softdep_speedup(ump);
13234 stat_sync_limit_hit += 1;
13237 * We only slow down the rate at which new dependencies are
13238 * generated if we are not using journaling. With journaling,
13239 * the cleanup should always be sufficient to keep things
13248 * Called by the allocation routines when they are about to fail
13249 * in the hope that we can free up the requested resource (inodes
13252 * First check to see if the work list has anything on it. If it has,
13253 * clean up entries until we successfully free the requested resource.
13254 * Because this process holds inodes locked, we cannot handle any remove
13255 * requests that might block on a locked inode as that could lead to
13256 * deadlock. If the worklist yields none of the requested resource,
13257 * start syncing out vnodes to free up the needed space.
13260 softdep_request_cleanup(fs, vp, cred, resource)
13263 struct ucred *cred;
13266 struct ufsmount *ump;
13268 struct vnode *lvp, *mvp;
13270 ufs2_daddr_t needed;
13274 * If we are being called because of a process doing a
13275 * copy-on-write, then it is not safe to process any
13276 * worklist items as we will recurse into the copyonwrite
13277 * routine. This will result in an incoherent snapshot.
13278 * If the vnode that we hold is a snapshot, we must avoid
13279 * handling other resources that could cause deadlock.
13281 if ((curthread->td_pflags & TDP_COWINPROGRESS) || IS_SNAPSHOT(VTOI(vp)))
13284 if (resource == FLUSH_BLOCKS_WAIT)
13285 stat_cleanup_blkrequests += 1;
13287 stat_cleanup_inorequests += 1;
13290 ump = VFSTOUFS(mp);
13291 mtx_assert(UFS_MTX(ump), MA_OWNED);
13293 error = ffs_update(vp, 1);
13294 if (error != 0 || MOUNTEDSOFTDEP(mp) == 0) {
13299 * If we are in need of resources, start by cleaning up
13300 * any block removals associated with our inode.
13303 process_removes(vp);
13304 process_truncates(vp);
13307 * Now clean up at least as many resources as we will need.
13309 * When requested to clean up inodes, the number that are needed
13310 * is set by the number of simultaneous writers (mnt_writeopcount)
13311 * plus a bit of slop (2) in case some more writers show up while
13314 * When requested to free up space, the amount of space that
13315 * we need is enough blocks to allocate a full-sized segment
13316 * (fs_contigsumsize). The number of such segments that will
13317 * be needed is set by the number of simultaneous writers
13318 * (mnt_writeopcount) plus a bit of slop (2) in case some more
13319 * writers show up while we are cleaning.
13321 * Additionally, if we are unpriviledged and allocating space,
13322 * we need to ensure that we clean up enough blocks to get the
13323 * needed number of blocks over the threshold of the minimum
13324 * number of blocks required to be kept free by the filesystem
13327 if (resource == FLUSH_INODES_WAIT) {
13328 needed = vp->v_mount->mnt_writeopcount + 2;
13329 } else if (resource == FLUSH_BLOCKS_WAIT) {
13330 needed = (vp->v_mount->mnt_writeopcount + 2) *
13331 fs->fs_contigsumsize;
13332 if (priv_check_cred(cred, PRIV_VFS_BLOCKRESERVE, 0))
13333 needed += fragstoblks(fs,
13334 roundup((fs->fs_dsize * fs->fs_minfree / 100) -
13335 fs->fs_cstotal.cs_nffree, fs->fs_frag));
13338 printf("softdep_request_cleanup: Unknown resource type %d\n",
13342 starttime = time_second;
13344 if ((resource == FLUSH_BLOCKS_WAIT && ump->softdep_on_worklist > 0 &&
13345 fs->fs_cstotal.cs_nbfree <= needed) ||
13346 (resource == FLUSH_INODES_WAIT && fs->fs_pendinginodes > 0 &&
13347 fs->fs_cstotal.cs_nifree <= needed)) {
13349 if (ump->softdep_on_worklist > 0 &&
13350 process_worklist_item(UFSTOVFS(ump),
13351 ump->softdep_on_worklist, LK_NOWAIT) != 0)
13352 stat_worklist_push += 1;
13356 * If we still need resources and there are no more worklist
13357 * entries to process to obtain them, we have to start flushing
13358 * the dirty vnodes to force the release of additional requests
13359 * to the worklist that we can then process to reap addition
13360 * resources. We walk the vnodes associated with the mount point
13361 * until we get the needed worklist requests that we can reap.
13363 if ((resource == FLUSH_BLOCKS_WAIT &&
13364 fs->fs_cstotal.cs_nbfree <= needed) ||
13365 (resource == FLUSH_INODES_WAIT && fs->fs_pendinginodes > 0 &&
13366 fs->fs_cstotal.cs_nifree <= needed)) {
13367 MNT_VNODE_FOREACH_ALL(lvp, mp, mvp) {
13368 if (TAILQ_FIRST(&lvp->v_bufobj.bo_dirty.bv_hd) == 0) {
13372 if (vget(lvp, LK_EXCLUSIVE | LK_INTERLOCK | LK_NOWAIT,
13375 if (lvp->v_vflag & VV_NOSYNC) { /* unlinked */
13379 (void) ffs_syncvnode(lvp, MNT_NOWAIT, 0);
13382 lvp = ump->um_devvp;
13383 if (vn_lock(lvp, LK_EXCLUSIVE | LK_NOWAIT) == 0) {
13384 VOP_FSYNC(lvp, MNT_NOWAIT, curthread);
13385 VOP_UNLOCK(lvp, 0);
13387 if (ump->softdep_on_worklist > 0) {
13388 stat_cleanup_retries += 1;
13391 stat_cleanup_failures += 1;
13393 if (time_second - starttime > stat_cleanup_high_delay)
13394 stat_cleanup_high_delay = time_second - starttime;
13400 softdep_excess_items(struct ufsmount *ump, int item)
13403 KASSERT(item >= 0 && item < D_LAST, ("item %d", item));
13404 return (dep_current[item] > max_softdeps &&
13405 ump->softdep_curdeps[item] > max_softdeps /
13406 stat_flush_threads);
13410 schedule_cleanup(struct mount *mp)
13412 struct ufsmount *ump;
13415 ump = VFSTOUFS(mp);
13419 if ((td->td_pflags & TDP_KTHREAD) != 0 &&
13420 (td->td_proc->p_flag2 & P2_AST_SU) == 0) {
13422 * No ast is delivered to kernel threads, so nobody
13423 * would deref the mp. Some kernel threads
13424 * explicitely check for AST, e.g. NFS daemon does
13425 * this in the serving loop.
13429 if (td->td_su != NULL)
13430 vfs_rel(td->td_su);
13434 td->td_flags |= TDF_ASTPENDING;
13439 softdep_ast_cleanup_proc(void)
13443 struct ufsmount *ump;
13448 while ((mp = td->td_su) != NULL) {
13450 error = vfs_busy(mp, MBF_NOWAIT);
13454 if (ffs_own_mount(mp) && MOUNTEDSOFTDEP(mp)) {
13455 ump = VFSTOUFS(mp);
13459 if (softdep_excess_items(ump, D_INODEDEP)) {
13461 request_cleanup(mp, FLUSH_INODES);
13463 if (softdep_excess_items(ump, D_DIRREM)) {
13465 request_cleanup(mp, FLUSH_BLOCKS);
13468 if (softdep_excess_items(ump, D_NEWBLK) ||
13469 softdep_excess_items(ump, D_ALLOCDIRECT) ||
13470 softdep_excess_items(ump, D_ALLOCINDIR)) {
13471 error = vn_start_write(NULL, &mp,
13475 VFS_SYNC(mp, MNT_WAIT);
13476 vn_finished_write(mp);
13479 if ((td->td_pflags & TDP_KTHREAD) != 0 || !req)
13488 * If memory utilization has gotten too high, deliberately slow things
13489 * down and speed up the I/O processing.
13492 request_cleanup(mp, resource)
13496 struct thread *td = curthread;
13497 struct ufsmount *ump;
13499 ump = VFSTOUFS(mp);
13502 * We never hold up the filesystem syncer or buf daemon.
13504 if (td->td_pflags & (TDP_SOFTDEP|TDP_NORUNNINGBUF))
13507 * First check to see if the work list has gotten backlogged.
13508 * If it has, co-opt this process to help clean up two entries.
13509 * Because this process may hold inodes locked, we cannot
13510 * handle any remove requests that might block on a locked
13511 * inode as that could lead to deadlock. We set TDP_SOFTDEP
13512 * to avoid recursively processing the worklist.
13514 if (ump->softdep_on_worklist > max_softdeps / 10) {
13515 td->td_pflags |= TDP_SOFTDEP;
13516 process_worklist_item(mp, 2, LK_NOWAIT);
13517 td->td_pflags &= ~TDP_SOFTDEP;
13518 stat_worklist_push += 2;
13522 * Next, we attempt to speed up the syncer process. If that
13523 * is successful, then we allow the process to continue.
13525 if (softdep_speedup(ump) &&
13526 resource != FLUSH_BLOCKS_WAIT &&
13527 resource != FLUSH_INODES_WAIT)
13530 * If we are resource constrained on inode dependencies, try
13531 * flushing some dirty inodes. Otherwise, we are constrained
13532 * by file deletions, so try accelerating flushes of directories
13533 * with removal dependencies. We would like to do the cleanup
13534 * here, but we probably hold an inode locked at this point and
13535 * that might deadlock against one that we try to clean. So,
13536 * the best that we can do is request the syncer daemon to do
13537 * the cleanup for us.
13539 switch (resource) {
13542 case FLUSH_INODES_WAIT:
13543 ACQUIRE_GBLLOCK(&lk);
13544 stat_ino_limit_push += 1;
13545 req_clear_inodedeps += 1;
13547 stat_countp = &stat_ino_limit_hit;
13551 case FLUSH_BLOCKS_WAIT:
13552 ACQUIRE_GBLLOCK(&lk);
13553 stat_blk_limit_push += 1;
13554 req_clear_remove += 1;
13556 stat_countp = &stat_blk_limit_hit;
13560 panic("request_cleanup: unknown type");
13563 * Hopefully the syncer daemon will catch up and awaken us.
13564 * We wait at most tickdelay before proceeding in any case.
13566 ACQUIRE_GBLLOCK(&lk);
13569 if (callout_pending(&softdep_callout) == FALSE)
13570 callout_reset(&softdep_callout, tickdelay > 2 ? tickdelay : 2,
13573 if ((td->td_pflags & TDP_KTHREAD) == 0)
13574 msleep((caddr_t)&proc_waiting, &lk, PPAUSE, "softupdate", 0);
13582 * Awaken processes pausing in request_cleanup and clear proc_waiting
13583 * to indicate that there is no longer a timer running. Pause_timer
13584 * will be called with the global softdep mutex (&lk) locked.
13591 GBLLOCK_OWNED(&lk);
13593 * The callout_ API has acquired mtx and will hold it around this
13596 *stat_countp += proc_waiting;
13597 wakeup(&proc_waiting);
13601 * If requested, try removing inode or removal dependencies.
13604 check_clear_deps(mp)
13609 * If we are suspended, it may be because of our using
13610 * too many inodedeps, so help clear them out.
13612 if (MOUNTEDSUJ(mp) && VFSTOUFS(mp)->softdep_jblocks->jb_suspended)
13613 clear_inodedeps(mp);
13615 * General requests for cleanup of backed up dependencies
13617 ACQUIRE_GBLLOCK(&lk);
13618 if (req_clear_inodedeps) {
13619 req_clear_inodedeps -= 1;
13621 clear_inodedeps(mp);
13622 ACQUIRE_GBLLOCK(&lk);
13623 wakeup(&proc_waiting);
13625 if (req_clear_remove) {
13626 req_clear_remove -= 1;
13629 ACQUIRE_GBLLOCK(&lk);
13630 wakeup(&proc_waiting);
13636 * Flush out a directory with at least one removal dependency in an effort to
13637 * reduce the number of dirrem, freefile, and freeblks dependency structures.
13643 struct pagedep_hashhead *pagedephd;
13644 struct pagedep *pagedep;
13645 struct ufsmount *ump;
13651 ump = VFSTOUFS(mp);
13654 for (cnt = 0; cnt <= ump->pagedep_hash_size; cnt++) {
13655 pagedephd = &ump->pagedep_hashtbl[ump->pagedep_nextclean++];
13656 if (ump->pagedep_nextclean > ump->pagedep_hash_size)
13657 ump->pagedep_nextclean = 0;
13658 LIST_FOREACH(pagedep, pagedephd, pd_hash) {
13659 if (LIST_EMPTY(&pagedep->pd_dirremhd))
13661 ino = pagedep->pd_ino;
13662 if (vn_start_write(NULL, &mp, V_NOWAIT) != 0)
13667 * Let unmount clear deps
13669 error = vfs_busy(mp, MBF_NOWAIT);
13672 error = ffs_vgetf(mp, ino, LK_EXCLUSIVE, &vp,
13676 softdep_error("clear_remove: vget", error);
13679 if ((error = ffs_syncvnode(vp, MNT_NOWAIT, 0)))
13680 softdep_error("clear_remove: fsync", error);
13681 bo = &vp->v_bufobj;
13687 vn_finished_write(mp);
13695 * Clear out a block of dirty inodes in an effort to reduce
13696 * the number of inodedep dependency structures.
13699 clear_inodedeps(mp)
13702 struct inodedep_hashhead *inodedephd;
13703 struct inodedep *inodedep;
13704 struct ufsmount *ump;
13708 ino_t firstino, lastino, ino;
13710 ump = VFSTOUFS(mp);
13714 * Pick a random inode dependency to be cleared.
13715 * We will then gather up all the inodes in its block
13716 * that have dependencies and flush them out.
13718 for (cnt = 0; cnt <= ump->inodedep_hash_size; cnt++) {
13719 inodedephd = &ump->inodedep_hashtbl[ump->inodedep_nextclean++];
13720 if (ump->inodedep_nextclean > ump->inodedep_hash_size)
13721 ump->inodedep_nextclean = 0;
13722 if ((inodedep = LIST_FIRST(inodedephd)) != NULL)
13725 if (inodedep == NULL)
13728 * Find the last inode in the block with dependencies.
13730 firstino = rounddown2(inodedep->id_ino, INOPB(fs));
13731 for (lastino = firstino + INOPB(fs) - 1; lastino > firstino; lastino--)
13732 if (inodedep_lookup(mp, lastino, 0, &inodedep) != 0)
13735 * Asynchronously push all but the last inode with dependencies.
13736 * Synchronously push the last inode with dependencies to ensure
13737 * that the inode block gets written to free up the inodedeps.
13739 for (ino = firstino; ino <= lastino; ino++) {
13740 if (inodedep_lookup(mp, ino, 0, &inodedep) == 0)
13742 if (vn_start_write(NULL, &mp, V_NOWAIT) != 0)
13745 error = vfs_busy(mp, MBF_NOWAIT); /* Let unmount clear deps */
13747 vn_finished_write(mp);
13751 if ((error = ffs_vgetf(mp, ino, LK_EXCLUSIVE, &vp,
13752 FFSV_FORCEINSMQ)) != 0) {
13753 softdep_error("clear_inodedeps: vget", error);
13755 vn_finished_write(mp);
13760 if (ino == lastino) {
13761 if ((error = ffs_syncvnode(vp, MNT_WAIT, 0)))
13762 softdep_error("clear_inodedeps: fsync1", error);
13764 if ((error = ffs_syncvnode(vp, MNT_NOWAIT, 0)))
13765 softdep_error("clear_inodedeps: fsync2", error);
13766 BO_LOCK(&vp->v_bufobj);
13768 BO_UNLOCK(&vp->v_bufobj);
13771 vn_finished_write(mp);
13777 softdep_buf_append(bp, wkhd)
13779 struct workhead *wkhd;
13781 struct worklist *wk;
13782 struct ufsmount *ump;
13784 if ((wk = LIST_FIRST(wkhd)) == NULL)
13786 KASSERT(MOUNTEDSOFTDEP(wk->wk_mp) != 0,
13787 ("softdep_buf_append called on non-softdep filesystem"));
13788 ump = VFSTOUFS(wk->wk_mp);
13790 while ((wk = LIST_FIRST(wkhd)) != NULL) {
13791 WORKLIST_REMOVE(wk);
13792 WORKLIST_INSERT(&bp->b_dep, wk);
13799 softdep_inode_append(ip, cred, wkhd)
13801 struct ucred *cred;
13802 struct workhead *wkhd;
13806 struct ufsmount *ump;
13810 KASSERT(MOUNTEDSOFTDEP(UFSTOVFS(ump)) != 0,
13811 ("softdep_inode_append called on non-softdep filesystem"));
13813 error = bread(ump->um_devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)),
13814 (int)fs->fs_bsize, cred, &bp);
13817 softdep_freework(wkhd);
13820 softdep_buf_append(bp, wkhd);
13825 softdep_freework(wkhd)
13826 struct workhead *wkhd;
13828 struct worklist *wk;
13829 struct ufsmount *ump;
13831 if ((wk = LIST_FIRST(wkhd)) == NULL)
13833 KASSERT(MOUNTEDSOFTDEP(wk->wk_mp) != 0,
13834 ("softdep_freework called on non-softdep filesystem"));
13835 ump = VFSTOUFS(wk->wk_mp);
13837 handle_jwork(wkhd);
13842 * Function to determine if the buffer has outstanding dependencies
13843 * that will cause a roll-back if the buffer is written. If wantcount
13844 * is set, return number of dependencies, otherwise just yes or no.
13847 softdep_count_dependencies(bp, wantcount)
13851 struct worklist *wk;
13852 struct ufsmount *ump;
13853 struct bmsafemap *bmsafemap;
13854 struct freework *freework;
13855 struct inodedep *inodedep;
13856 struct indirdep *indirdep;
13857 struct freeblks *freeblks;
13858 struct allocindir *aip;
13859 struct pagedep *pagedep;
13860 struct dirrem *dirrem;
13861 struct newblk *newblk;
13862 struct mkdir *mkdir;
13863 struct diradd *dap;
13867 if ((wk = LIST_FIRST(&bp->b_dep)) == NULL)
13869 ump = VFSTOUFS(wk->wk_mp);
13871 LIST_FOREACH(wk, &bp->b_dep, wk_list) {
13872 switch (wk->wk_type) {
13875 inodedep = WK_INODEDEP(wk);
13876 if ((inodedep->id_state & DEPCOMPLETE) == 0) {
13877 /* bitmap allocation dependency */
13882 if (TAILQ_FIRST(&inodedep->id_inoupdt)) {
13883 /* direct block pointer dependency */
13888 if (TAILQ_FIRST(&inodedep->id_extupdt)) {
13889 /* direct block pointer dependency */
13894 if (TAILQ_FIRST(&inodedep->id_inoreflst)) {
13895 /* Add reference dependency. */
13903 indirdep = WK_INDIRDEP(wk);
13905 TAILQ_FOREACH(freework, &indirdep->ir_trunc, fw_next) {
13906 /* indirect truncation dependency */
13912 LIST_FOREACH(aip, &indirdep->ir_deplisthd, ai_next) {
13913 /* indirect block pointer dependency */
13921 pagedep = WK_PAGEDEP(wk);
13922 LIST_FOREACH(dirrem, &pagedep->pd_dirremhd, dm_next) {
13923 if (LIST_FIRST(&dirrem->dm_jremrefhd)) {
13924 /* Journal remove ref dependency. */
13930 for (i = 0; i < DAHASHSZ; i++) {
13932 LIST_FOREACH(dap, &pagedep->pd_diraddhd[i], da_pdlist) {
13933 /* directory entry dependency */
13942 bmsafemap = WK_BMSAFEMAP(wk);
13943 if (LIST_FIRST(&bmsafemap->sm_jaddrefhd)) {
13944 /* Add reference dependency. */
13949 if (LIST_FIRST(&bmsafemap->sm_jnewblkhd)) {
13950 /* Allocate block dependency. */
13958 freeblks = WK_FREEBLKS(wk);
13959 if (LIST_FIRST(&freeblks->fb_jblkdephd)) {
13960 /* Freeblk journal dependency. */
13967 case D_ALLOCDIRECT:
13969 newblk = WK_NEWBLK(wk);
13970 if (newblk->nb_jnewblk) {
13971 /* Journal allocate dependency. */
13979 mkdir = WK_MKDIR(wk);
13980 if (mkdir->md_jaddref) {
13981 /* Journal reference dependency. */
13993 /* never a dependency on these blocks */
13997 panic("softdep_count_dependencies: Unexpected type %s",
13998 TYPENAME(wk->wk_type));
14008 * Acquire exclusive access to a buffer.
14009 * Must be called with a locked mtx parameter.
14010 * Return acquired buffer or NULL on failure.
14012 static struct buf *
14013 getdirtybuf(bp, lock, waitfor)
14015 struct rwlock *lock;
14020 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL) != 0) {
14021 if (waitfor != MNT_WAIT)
14023 error = BUF_LOCK(bp,
14024 LK_EXCLUSIVE | LK_SLEEPFAIL | LK_INTERLOCK, lock);
14026 * Even if we successfully acquire bp here, we have dropped
14027 * lock, which may violates our guarantee.
14031 else if (error != ENOLCK)
14032 panic("getdirtybuf: inconsistent lock: %d", error);
14036 if ((bp->b_vflags & BV_BKGRDINPROG) != 0) {
14037 if (lock != BO_LOCKPTR(bp->b_bufobj) && waitfor == MNT_WAIT) {
14039 BO_LOCK(bp->b_bufobj);
14041 if ((bp->b_vflags & BV_BKGRDINPROG) != 0) {
14042 bp->b_vflags |= BV_BKGRDWAIT;
14043 msleep(&bp->b_xflags, BO_LOCKPTR(bp->b_bufobj),
14044 PRIBIO | PDROP, "getbuf", 0);
14046 BO_UNLOCK(bp->b_bufobj);
14051 if (waitfor != MNT_WAIT)
14054 * The lock argument must be bp->b_vp's mutex in
14057 #ifdef DEBUG_VFS_LOCKS
14058 if (bp->b_vp->v_type != VCHR)
14059 ASSERT_BO_WLOCKED(bp->b_bufobj);
14061 bp->b_vflags |= BV_BKGRDWAIT;
14062 rw_sleep(&bp->b_xflags, lock, PRIBIO, "getbuf", 0);
14065 if ((bp->b_flags & B_DELWRI) == 0) {
14075 * Check if it is safe to suspend the file system now. On entry,
14076 * the vnode interlock for devvp should be held. Return 0 with
14077 * the mount interlock held if the file system can be suspended now,
14078 * otherwise return EAGAIN with the mount interlock held.
14081 softdep_check_suspend(struct mount *mp,
14082 struct vnode *devvp,
14083 int softdep_depcnt,
14084 int softdep_accdepcnt,
14085 int secondary_writes,
14086 int secondary_accwrites)
14089 struct ufsmount *ump;
14090 struct inodedep *inodedep;
14091 int error, unlinked;
14093 bo = &devvp->v_bufobj;
14094 ASSERT_BO_WLOCKED(bo);
14097 * If we are not running with soft updates, then we need only
14098 * deal with secondary writes as we try to suspend.
14100 if (MOUNTEDSOFTDEP(mp) == 0) {
14102 while (mp->mnt_secondary_writes != 0) {
14104 msleep(&mp->mnt_secondary_writes, MNT_MTX(mp),
14105 (PUSER - 1) | PDROP, "secwr", 0);
14111 * Reasons for needing more work before suspend:
14112 * - Dirty buffers on devvp.
14113 * - Secondary writes occurred after start of vnode sync loop
14116 if (bo->bo_numoutput > 0 ||
14117 bo->bo_dirty.bv_cnt > 0 ||
14118 secondary_writes != 0 ||
14119 mp->mnt_secondary_writes != 0 ||
14120 secondary_accwrites != mp->mnt_secondary_accwrites)
14127 * If we are running with soft updates, then we need to coordinate
14128 * with them as we try to suspend.
14130 ump = VFSTOUFS(mp);
14132 if (!TRY_ACQUIRE_LOCK(ump)) {
14140 if (mp->mnt_secondary_writes != 0) {
14143 msleep(&mp->mnt_secondary_writes,
14145 (PUSER - 1) | PDROP, "secwr", 0);
14153 if (MOUNTEDSUJ(mp)) {
14154 for (inodedep = TAILQ_FIRST(&ump->softdep_unlinked);
14156 inodedep = TAILQ_NEXT(inodedep, id_unlinked)) {
14157 if ((inodedep->id_state & (UNLINKED | UNLINKLINKS |
14158 UNLINKONLIST)) != (UNLINKED | UNLINKLINKS |
14160 !check_inodedep_free(inodedep))
14167 * Reasons for needing more work before suspend:
14168 * - Dirty buffers on devvp.
14169 * - Softdep activity occurred after start of vnode sync loop
14170 * - Secondary writes occurred after start of vnode sync loop
14173 if (bo->bo_numoutput > 0 ||
14174 bo->bo_dirty.bv_cnt > 0 ||
14175 softdep_depcnt != unlinked ||
14176 ump->softdep_deps != unlinked ||
14177 softdep_accdepcnt != ump->softdep_accdeps ||
14178 secondary_writes != 0 ||
14179 mp->mnt_secondary_writes != 0 ||
14180 secondary_accwrites != mp->mnt_secondary_accwrites)
14189 * Get the number of dependency structures for the file system, both
14190 * the current number and the total number allocated. These will
14191 * later be used to detect that softdep processing has occurred.
14194 softdep_get_depcounts(struct mount *mp,
14195 int *softdep_depsp,
14196 int *softdep_accdepsp)
14198 struct ufsmount *ump;
14200 if (MOUNTEDSOFTDEP(mp) == 0) {
14201 *softdep_depsp = 0;
14202 *softdep_accdepsp = 0;
14205 ump = VFSTOUFS(mp);
14207 *softdep_depsp = ump->softdep_deps;
14208 *softdep_accdepsp = ump->softdep_accdeps;
14213 * Wait for pending output on a vnode to complete.
14214 * Must be called with vnode lock and interlock locked.
14216 * XXX: Should just be a call to bufobj_wwait().
14224 bo = &vp->v_bufobj;
14225 ASSERT_VOP_LOCKED(vp, "drain_output");
14226 ASSERT_BO_WLOCKED(bo);
14228 while (bo->bo_numoutput) {
14229 bo->bo_flag |= BO_WWAIT;
14230 msleep((caddr_t)&bo->bo_numoutput,
14231 BO_LOCKPTR(bo), PRIBIO + 1, "drainvp", 0);
14236 * Called whenever a buffer that is being invalidated or reallocated
14237 * contains dependencies. This should only happen if an I/O error has
14238 * occurred. The routine is called with the buffer locked.
14241 softdep_deallocate_dependencies(bp)
14245 if ((bp->b_ioflags & BIO_ERROR) == 0)
14246 panic("softdep_deallocate_dependencies: dangling deps");
14247 if (bp->b_vp != NULL && bp->b_vp->v_mount != NULL)
14248 softdep_error(bp->b_vp->v_mount->mnt_stat.f_mntonname, bp->b_error);
14250 printf("softdep_deallocate_dependencies: "
14251 "got error %d while accessing filesystem\n", bp->b_error);
14252 if (bp->b_error != ENXIO)
14253 panic("softdep_deallocate_dependencies: unrecovered I/O error");
14257 * Function to handle asynchronous write errors in the filesystem.
14260 softdep_error(func, error)
14265 /* XXX should do something better! */
14266 printf("%s: got error %d while accessing filesystem\n", func, error);
14272 inodedep_print(struct inodedep *inodedep, int verbose)
14274 db_printf("%p fs %p st %x ino %jd inoblk %jd delta %d nlink %d"
14276 inodedep, inodedep->id_fs, inodedep->id_state,
14277 (intmax_t)inodedep->id_ino,
14278 (intmax_t)fsbtodb(inodedep->id_fs,
14279 ino_to_fsba(inodedep->id_fs, inodedep->id_ino)),
14280 inodedep->id_nlinkdelta, inodedep->id_savednlink,
14281 inodedep->id_savedino1);
14286 db_printf("\tpendinghd %p, bufwait %p, inowait %p, inoreflst %p, "
14288 LIST_FIRST(&inodedep->id_pendinghd),
14289 LIST_FIRST(&inodedep->id_bufwait),
14290 LIST_FIRST(&inodedep->id_inowait),
14291 TAILQ_FIRST(&inodedep->id_inoreflst),
14292 inodedep->id_mkdiradd);
14293 db_printf("\tinoupdt %p, newinoupdt %p, extupdt %p, newextupdt %p\n",
14294 TAILQ_FIRST(&inodedep->id_inoupdt),
14295 TAILQ_FIRST(&inodedep->id_newinoupdt),
14296 TAILQ_FIRST(&inodedep->id_extupdt),
14297 TAILQ_FIRST(&inodedep->id_newextupdt));
14300 DB_SHOW_COMMAND(inodedep, db_show_inodedep)
14303 if (have_addr == 0) {
14304 db_printf("Address required\n");
14307 inodedep_print((struct inodedep*)addr, 1);
14310 DB_SHOW_COMMAND(inodedeps, db_show_inodedeps)
14312 struct inodedep_hashhead *inodedephd;
14313 struct inodedep *inodedep;
14314 struct ufsmount *ump;
14317 if (have_addr == 0) {
14318 db_printf("Address required\n");
14321 ump = (struct ufsmount *)addr;
14322 for (cnt = 0; cnt < ump->inodedep_hash_size; cnt++) {
14323 inodedephd = &ump->inodedep_hashtbl[cnt];
14324 LIST_FOREACH(inodedep, inodedephd, id_hash) {
14325 inodedep_print(inodedep, 0);
14330 DB_SHOW_COMMAND(worklist, db_show_worklist)
14332 struct worklist *wk;
14334 if (have_addr == 0) {
14335 db_printf("Address required\n");
14338 wk = (struct worklist *)addr;
14339 printf("worklist: %p type %s state 0x%X\n",
14340 wk, TYPENAME(wk->wk_type), wk->wk_state);
14343 DB_SHOW_COMMAND(workhead, db_show_workhead)
14345 struct workhead *wkhd;
14346 struct worklist *wk;
14349 if (have_addr == 0) {
14350 db_printf("Address required\n");
14353 wkhd = (struct workhead *)addr;
14354 wk = LIST_FIRST(wkhd);
14355 for (i = 0; i < 100 && wk != NULL; i++, wk = LIST_NEXT(wk, wk_list))
14356 db_printf("worklist: %p type %s state 0x%X",
14357 wk, TYPENAME(wk->wk_type), wk->wk_state);
14359 db_printf("workhead overflow");
14364 DB_SHOW_COMMAND(mkdirs, db_show_mkdirs)
14366 struct mkdirlist *mkdirlisthd;
14367 struct jaddref *jaddref;
14368 struct diradd *diradd;
14369 struct mkdir *mkdir;
14371 if (have_addr == 0) {
14372 db_printf("Address required\n");
14375 mkdirlisthd = (struct mkdirlist *)addr;
14376 LIST_FOREACH(mkdir, mkdirlisthd, md_mkdirs) {
14377 diradd = mkdir->md_diradd;
14378 db_printf("mkdir: %p state 0x%X dap %p state 0x%X",
14379 mkdir, mkdir->md_state, diradd, diradd->da_state);
14380 if ((jaddref = mkdir->md_jaddref) != NULL)
14381 db_printf(" jaddref %p jaddref state 0x%X",
14382 jaddref, jaddref->ja_state);
14387 /* exported to ffs_vfsops.c */
14388 extern void db_print_ffs(struct ufsmount *ump);
14390 db_print_ffs(struct ufsmount *ump)
14392 db_printf("mp %p %s devvp %p fs %p su_wl %d su_deps %d su_req %d\n",
14393 ump->um_mountp, ump->um_mountp->mnt_stat.f_mntonname,
14394 ump->um_devvp, ump->um_fs, ump->softdep_on_worklist,
14395 ump->softdep_deps, ump->softdep_req);
14400 #endif /* SOFTUPDATES */