2 * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
34 #include "xfs_macros.h"
35 #include "xfs_types.h"
38 #include "xfs_trans.h"
39 #include "xfs_trans_priv.h"
44 #include "xfs_dmapi.h"
45 #include "xfs_mount.h"
46 #include "xfs_alloc_btree.h"
47 #include "xfs_bmap_btree.h"
48 #include "xfs_ialloc_btree.h"
49 #include "xfs_btree.h"
51 #include "xfs_alloc.h"
52 #include "xfs_ialloc.h"
53 #include "xfs_attr_sf.h"
54 #include "xfs_dir_sf.h"
55 #include "xfs_dir2_sf.h"
56 #include "xfs_dinode.h"
57 #include "xfs_inode_item.h"
58 #include "xfs_inode.h"
60 #include "xfs_buf_item.h"
62 #include "xfs_error.h"
64 #include "xfs_utils.h"
65 #include "xfs_dir2_trace.h"
66 #include "xfs_quota.h"
71 kmem_zone_t *xfs_ifork_zone;
72 kmem_zone_t *xfs_inode_zone;
73 kmem_zone_t *xfs_chashlist_zone;
76 * Used in xfs_itruncate(). This is the maximum number of extents
77 * freed from a file in a single transaction.
79 #define XFS_ITRUNC_MAX_EXTENTS 2
81 STATIC int xfs_iflush_int(xfs_inode_t *, xfs_buf_t *);
82 STATIC int xfs_iformat_local(xfs_inode_t *, xfs_dinode_t *, int, int);
83 STATIC int xfs_iformat_extents(xfs_inode_t *, xfs_dinode_t *, int);
84 STATIC int xfs_iformat_btree(xfs_inode_t *, xfs_dinode_t *, int);
89 * Make sure that the extents in the given memory buffer
103 for (i = 0; i < nrecs; i++) {
104 rec.l0 = get_unaligned((__uint64_t*)&ep->l0);
105 rec.l1 = get_unaligned((__uint64_t*)&ep->l1);
107 xfs_bmbt_disk_get_all(&rec, &irec);
109 xfs_bmbt_get_all(&rec, &irec);
110 if (fmt == XFS_EXTFMT_NOSTATE)
111 ASSERT(irec.br_state == XFS_EXT_NORM);
116 #define xfs_validate_extents(ep, nrecs, disk, fmt)
120 * Check that none of the inode's in the buffer have a next
121 * unlinked field of 0.
133 j = mp->m_inode_cluster_size >> mp->m_sb.sb_inodelog;
135 for (i = 0; i < j; i++) {
136 dip = (xfs_dinode_t *)xfs_buf_offset(bp,
137 i * mp->m_sb.sb_inodesize);
138 if (INT_ISZERO(dip->di_next_unlinked, ARCH_CONVERT)) {
139 xfs_fs_cmn_err(CE_ALERT, mp,
140 "Detected a bogus zero next_unlinked field in incore inode buffer 0x%p. About to pop an ASSERT.",
142 ASSERT(!INT_ISZERO(dip->di_next_unlinked, ARCH_CONVERT));
149 * This routine is called to map an inode number within a file
150 * system to the buffer containing the on-disk version of the
151 * inode. It returns a pointer to the buffer containing the
152 * on-disk inode in the bpp parameter, and in the dip parameter
153 * it returns a pointer to the on-disk inode within that buffer.
155 * If a non-zero error is returned, then the contents of bpp and
156 * dipp are undefined.
158 * Use xfs_imap() to determine the size and location of the
159 * buffer to read from disk.
177 * Call the space managment code to find the location of the
181 error = xfs_imap(mp, tp, ino, &imap, XFS_IMAP_LOOKUP);
184 "xfs_inotobp: xfs_imap() returned an "
185 "error %d on %s. Returning error.", error, mp->m_fsname);
190 * If the inode number maps to a block outside the bounds of the
191 * file system then return NULL rather than calling read_buf
192 * and panicing when we get an error from the driver.
194 if ((imap.im_blkno + imap.im_len) >
195 XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks)) {
197 "xfs_inotobp: inode number (%d + %d) maps to a block outside the bounds "
198 "of the file system %s. Returning EINVAL.",
199 imap.im_blkno, imap.im_len,mp->m_fsname);
200 return XFS_ERROR(EINVAL);
204 * Read in the buffer. If tp is NULL, xfs_trans_read_buf() will
205 * default to just a read_buf() call.
207 error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, imap.im_blkno,
208 (int)imap.im_len, XFS_BUF_LOCK, &bp);
212 "xfs_inotobp: xfs_trans_read_buf() returned an "
213 "error %d on %s. Returning error.", error, mp->m_fsname);
216 dip = (xfs_dinode_t *)xfs_buf_offset(bp, 0);
218 INT_GET(dip->di_core.di_magic, ARCH_CONVERT) == XFS_DINODE_MAGIC &&
219 XFS_DINODE_GOOD_VERSION(INT_GET(dip->di_core.di_version, ARCH_CONVERT));
220 if (unlikely(XFS_TEST_ERROR(!di_ok, mp, XFS_ERRTAG_ITOBP_INOTOBP,
221 XFS_RANDOM_ITOBP_INOTOBP))) {
222 XFS_CORRUPTION_ERROR("xfs_inotobp", XFS_ERRLEVEL_LOW, mp, dip);
223 xfs_trans_brelse(tp, bp);
225 "xfs_inotobp: XFS_TEST_ERROR() returned an "
226 "error on %s. Returning EFSCORRUPTED.", mp->m_fsname);
227 return XFS_ERROR(EFSCORRUPTED);
230 xfs_inobp_check(mp, bp);
233 * Set *dipp to point to the on-disk inode in the buffer.
235 *dipp = (xfs_dinode_t *)xfs_buf_offset(bp, imap.im_boffset);
237 *offset = imap.im_boffset;
243 * This routine is called to map an inode to the buffer containing
244 * the on-disk version of the inode. It returns a pointer to the
245 * buffer containing the on-disk inode in the bpp parameter, and in
246 * the dip parameter it returns a pointer to the on-disk inode within
249 * If a non-zero error is returned, then the contents of bpp and
250 * dipp are undefined.
252 * If the inode is new and has not yet been initialized, use xfs_imap()
253 * to determine the size and location of the buffer to read from disk.
254 * If the inode has already been mapped to its buffer and read in once,
255 * then use the mapping information stored in the inode rather than
256 * calling xfs_imap(). This allows us to avoid the overhead of looking
257 * at the inode btree for small block file systems (see xfs_dilocate()).
258 * We can tell whether the inode has been mapped in before by comparing
259 * its disk block address to 0. Only uninitialized inodes will have
260 * 0 for the disk block address.
279 if (ip->i_blkno == (xfs_daddr_t)0) {
281 * Call the space management code to find the location of the
285 error = xfs_imap(mp, tp, ip->i_ino, &imap, XFS_IMAP_LOOKUP);
291 * If the inode number maps to a block outside the bounds
292 * of the file system then return NULL rather than calling
293 * read_buf and panicing when we get an error from the
296 if ((imap.im_blkno + imap.im_len) >
297 XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks)) {
299 xfs_fs_cmn_err(CE_ALERT, mp, "xfs_itobp: "
300 "(imap.im_blkno (0x%llx) "
301 "+ imap.im_len (0x%llx)) > "
302 " XFS_FSB_TO_BB(mp, "
303 "mp->m_sb.sb_dblocks) (0x%llx)",
304 (unsigned long long) imap.im_blkno,
305 (unsigned long long) imap.im_len,
306 XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks));
308 return XFS_ERROR(EINVAL);
312 * Fill in the fields in the inode that will be used to
313 * map the inode to its buffer from now on.
315 ip->i_blkno = imap.im_blkno;
316 ip->i_len = imap.im_len;
317 ip->i_boffset = imap.im_boffset;
320 * We've already mapped the inode once, so just use the
321 * mapping that we saved the first time.
323 imap.im_blkno = ip->i_blkno;
324 imap.im_len = ip->i_len;
325 imap.im_boffset = ip->i_boffset;
327 ASSERT(bno == 0 || bno == imap.im_blkno);
330 * Read in the buffer. If tp is NULL, xfs_trans_read_buf() will
331 * default to just a read_buf() call.
333 error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, imap.im_blkno,
334 (int)imap.im_len, XFS_BUF_LOCK, &bp);
338 xfs_fs_cmn_err(CE_ALERT, mp, "xfs_itobp: "
339 "xfs_trans_read_buf() returned error %d, "
340 "imap.im_blkno 0x%llx, imap.im_len 0x%llx",
341 error, (unsigned long long) imap.im_blkno,
342 (unsigned long long) imap.im_len);
348 * Validate the magic number and version of every inode in the buffer
349 * (if DEBUG kernel) or the first inode in the buffer, otherwise.
352 ni = BBTOB(imap.im_len) >> mp->m_sb.sb_inodelog;
356 for (i = 0; i < ni; i++) {
360 dip = (xfs_dinode_t *)xfs_buf_offset(bp,
361 (i << mp->m_sb.sb_inodelog));
362 di_ok = INT_GET(dip->di_core.di_magic, ARCH_CONVERT) == XFS_DINODE_MAGIC &&
363 XFS_DINODE_GOOD_VERSION(INT_GET(dip->di_core.di_version, ARCH_CONVERT));
364 if (unlikely(XFS_TEST_ERROR(!di_ok, mp, XFS_ERRTAG_ITOBP_INOTOBP,
365 XFS_RANDOM_ITOBP_INOTOBP))) {
367 prdev("bad inode magic/vsn daddr %lld #%d (magic=%x)",
369 (unsigned long long)imap.im_blkno, i,
370 INT_GET(dip->di_core.di_magic, ARCH_CONVERT));
372 XFS_CORRUPTION_ERROR("xfs_itobp", XFS_ERRLEVEL_HIGH,
374 xfs_trans_brelse(tp, bp);
375 return XFS_ERROR(EFSCORRUPTED);
378 #endif /* __KERNEL__ */
380 xfs_inobp_check(mp, bp);
383 * Mark the buffer as an inode buffer now that it looks good
385 XFS_BUF_SET_VTYPE(bp, B_FS_INO);
388 * Set *dipp to point to the on-disk inode in the buffer.
390 *dipp = (xfs_dinode_t *)xfs_buf_offset(bp, imap.im_boffset);
396 * Move inode type and inode format specific information from the
397 * on-disk inode to the in-core inode. For fifos, devs, and sockets
398 * this means set if_rdev to the proper value. For files, directories,
399 * and symlinks this means to bring in the in-line data or extent
400 * pointers. For a file in B-tree format, only the root is immediately
401 * brought in-core. The rest will be in-lined in if_extents when it
402 * is first referenced (see xfs_iread_extents()).
409 xfs_attr_shortform_t *atp;
413 ip->i_df.if_ext_max =
414 XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
418 INT_GET(dip->di_core.di_nextents, ARCH_CONVERT) +
419 INT_GET(dip->di_core.di_anextents, ARCH_CONVERT) >
420 INT_GET(dip->di_core.di_nblocks, ARCH_CONVERT))) {
421 xfs_fs_cmn_err(CE_WARN, ip->i_mount,
422 "corrupt dinode %Lu, extent total = %d, nblocks = %Lu."
423 " Unmount and run xfs_repair.",
424 (unsigned long long)ip->i_ino,
425 (int)(INT_GET(dip->di_core.di_nextents, ARCH_CONVERT)
426 + INT_GET(dip->di_core.di_anextents, ARCH_CONVERT)),
428 INT_GET(dip->di_core.di_nblocks, ARCH_CONVERT));
429 XFS_CORRUPTION_ERROR("xfs_iformat(1)", XFS_ERRLEVEL_LOW,
431 return XFS_ERROR(EFSCORRUPTED);
434 if (unlikely(INT_GET(dip->di_core.di_forkoff, ARCH_CONVERT) > ip->i_mount->m_sb.sb_inodesize)) {
435 xfs_fs_cmn_err(CE_WARN, ip->i_mount,
436 "corrupt dinode %Lu, forkoff = 0x%x."
437 " Unmount and run xfs_repair.",
438 (unsigned long long)ip->i_ino,
439 (int)(INT_GET(dip->di_core.di_forkoff, ARCH_CONVERT)));
440 XFS_CORRUPTION_ERROR("xfs_iformat(2)", XFS_ERRLEVEL_LOW,
442 return XFS_ERROR(EFSCORRUPTED);
445 switch (ip->i_d.di_mode & S_IFMT) {
450 if (unlikely(INT_GET(dip->di_core.di_format, ARCH_CONVERT) != XFS_DINODE_FMT_DEV)) {
451 XFS_CORRUPTION_ERROR("xfs_iformat(3)", XFS_ERRLEVEL_LOW,
453 return XFS_ERROR(EFSCORRUPTED);
456 ip->i_df.if_u2.if_rdev = INT_GET(dip->di_u.di_dev, ARCH_CONVERT);
462 switch (INT_GET(dip->di_core.di_format, ARCH_CONVERT)) {
463 case XFS_DINODE_FMT_LOCAL:
465 * no local regular files yet
467 if (unlikely((INT_GET(dip->di_core.di_mode, ARCH_CONVERT) & S_IFMT) == S_IFREG)) {
468 xfs_fs_cmn_err(CE_WARN, ip->i_mount,
469 "corrupt inode (local format for regular file) %Lu. Unmount and run xfs_repair.",
470 (unsigned long long) ip->i_ino);
471 XFS_CORRUPTION_ERROR("xfs_iformat(4)",
474 return XFS_ERROR(EFSCORRUPTED);
477 di_size = INT_GET(dip->di_core.di_size, ARCH_CONVERT);
478 if (unlikely(di_size >
479 XFS_DFORK_DSIZE_ARCH(dip, ip->i_mount, ARCH_CONVERT))) {
480 xfs_fs_cmn_err(CE_WARN, ip->i_mount,
481 "corrupt inode %Lu (bad size %Ld for local inode). Unmount and run xfs_repair.",
482 (unsigned long long) ip->i_ino,
483 (long long) di_size);
484 XFS_CORRUPTION_ERROR("xfs_iformat(5)",
487 return XFS_ERROR(EFSCORRUPTED);
491 error = xfs_iformat_local(ip, dip, XFS_DATA_FORK, size);
493 case XFS_DINODE_FMT_EXTENTS:
494 error = xfs_iformat_extents(ip, dip, XFS_DATA_FORK);
496 case XFS_DINODE_FMT_BTREE:
497 error = xfs_iformat_btree(ip, dip, XFS_DATA_FORK);
500 XFS_ERROR_REPORT("xfs_iformat(6)", XFS_ERRLEVEL_LOW,
502 return XFS_ERROR(EFSCORRUPTED);
507 XFS_ERROR_REPORT("xfs_iformat(7)", XFS_ERRLEVEL_LOW, ip->i_mount);
508 return XFS_ERROR(EFSCORRUPTED);
513 if (!XFS_DFORK_Q_ARCH(dip, ARCH_CONVERT))
515 ASSERT(ip->i_afp == NULL);
516 ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP);
517 ip->i_afp->if_ext_max =
518 XFS_IFORK_ASIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
519 switch (INT_GET(dip->di_core.di_aformat, ARCH_CONVERT)) {
520 case XFS_DINODE_FMT_LOCAL:
521 atp = (xfs_attr_shortform_t *)XFS_DFORK_APTR_ARCH(dip, ARCH_CONVERT);
522 size = (int)INT_GET(atp->hdr.totsize, ARCH_CONVERT);
523 error = xfs_iformat_local(ip, dip, XFS_ATTR_FORK, size);
525 case XFS_DINODE_FMT_EXTENTS:
526 error = xfs_iformat_extents(ip, dip, XFS_ATTR_FORK);
528 case XFS_DINODE_FMT_BTREE:
529 error = xfs_iformat_btree(ip, dip, XFS_ATTR_FORK);
532 error = XFS_ERROR(EFSCORRUPTED);
536 kmem_zone_free(xfs_ifork_zone, ip->i_afp);
538 xfs_idestroy_fork(ip, XFS_DATA_FORK);
544 * The file is in-lined in the on-disk inode.
545 * If it fits into if_inline_data, then copy
546 * it there, otherwise allocate a buffer for it
547 * and copy the data there. Either way, set
548 * if_data to point at the data.
549 * If we allocate a buffer for the data, make
550 * sure that its size is a multiple of 4 and
551 * record the real size in i_real_bytes.
564 * If the size is unreasonable, then something
565 * is wrong and we just bail out rather than crash in
566 * kmem_alloc() or memcpy() below.
568 if (unlikely(size > XFS_DFORK_SIZE_ARCH(dip, ip->i_mount, whichfork, ARCH_CONVERT))) {
569 xfs_fs_cmn_err(CE_WARN, ip->i_mount,
570 "corrupt inode %Lu (bad size %d for local fork, size = %d). Unmount and run xfs_repair.",
571 (unsigned long long) ip->i_ino, size,
572 XFS_DFORK_SIZE_ARCH(dip, ip->i_mount, whichfork, ARCH_CONVERT));
573 XFS_CORRUPTION_ERROR("xfs_iformat_local", XFS_ERRLEVEL_LOW,
575 return XFS_ERROR(EFSCORRUPTED);
577 ifp = XFS_IFORK_PTR(ip, whichfork);
580 ifp->if_u1.if_data = NULL;
581 else if (size <= sizeof(ifp->if_u2.if_inline_data))
582 ifp->if_u1.if_data = ifp->if_u2.if_inline_data;
584 real_size = roundup(size, 4);
585 ifp->if_u1.if_data = kmem_alloc(real_size, KM_SLEEP);
587 ifp->if_bytes = size;
588 ifp->if_real_bytes = real_size;
590 memcpy(ifp->if_u1.if_data,
591 XFS_DFORK_PTR_ARCH(dip, whichfork, ARCH_CONVERT), size);
592 ifp->if_flags &= ~XFS_IFEXTENTS;
593 ifp->if_flags |= XFS_IFINLINE;
598 * The file consists of a set of extents all
599 * of which fit into the on-disk inode.
600 * If there are few enough extents to fit into
601 * the if_inline_ext, then copy them there.
602 * Otherwise allocate a buffer for them and copy
603 * them into it. Either way, set if_extents
604 * to point at the extents.
612 xfs_bmbt_rec_t *ep, *dp;
619 ifp = XFS_IFORK_PTR(ip, whichfork);
620 nex = XFS_DFORK_NEXTENTS_ARCH(dip, whichfork, ARCH_CONVERT);
621 size = nex * (uint)sizeof(xfs_bmbt_rec_t);
624 * If the number of extents is unreasonable, then something
625 * is wrong and we just bail out rather than crash in
626 * kmem_alloc() or memcpy() below.
628 if (unlikely(size < 0 || size > XFS_DFORK_SIZE_ARCH(dip, ip->i_mount, whichfork, ARCH_CONVERT))) {
629 xfs_fs_cmn_err(CE_WARN, ip->i_mount,
630 "corrupt inode %Lu ((a)extents = %d). Unmount and run xfs_repair.",
631 (unsigned long long) ip->i_ino, nex);
632 XFS_CORRUPTION_ERROR("xfs_iformat_extents(1)", XFS_ERRLEVEL_LOW,
634 return XFS_ERROR(EFSCORRUPTED);
639 ifp->if_u1.if_extents = NULL;
640 else if (nex <= XFS_INLINE_EXTS)
641 ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext;
643 ifp->if_u1.if_extents = kmem_alloc(size, KM_SLEEP);
644 ASSERT(ifp->if_u1.if_extents != NULL);
647 ifp->if_bytes = size;
648 ifp->if_real_bytes = real_size;
650 dp = (xfs_bmbt_rec_t *)
651 XFS_DFORK_PTR_ARCH(dip, whichfork, ARCH_CONVERT);
652 xfs_validate_extents(dp, nex, 1, XFS_EXTFMT_INODE(ip));
653 ep = ifp->if_u1.if_extents;
654 for (i = 0; i < nex; i++, ep++, dp++) {
655 ep->l0 = INT_GET(get_unaligned((__uint64_t*)&dp->l0),
657 ep->l1 = INT_GET(get_unaligned((__uint64_t*)&dp->l1),
660 xfs_bmap_trace_exlist("xfs_iformat_extents", ip, nex,
662 if (whichfork != XFS_DATA_FORK ||
663 XFS_EXTFMT_INODE(ip) == XFS_EXTFMT_NOSTATE)
664 if (unlikely(xfs_check_nostate_extents(
665 ifp->if_u1.if_extents, nex))) {
666 XFS_ERROR_REPORT("xfs_iformat_extents(2)",
669 return XFS_ERROR(EFSCORRUPTED);
672 ifp->if_flags |= XFS_IFEXTENTS;
677 * The file has too many extents to fit into
678 * the inode, so they are in B-tree format.
679 * Allocate a buffer for the root of the B-tree
680 * and copy the root into it. The i_extents
681 * field will remain NULL until all of the
682 * extents are read in (when they are needed).
690 xfs_bmdr_block_t *dfp;
696 ifp = XFS_IFORK_PTR(ip, whichfork);
697 dfp = (xfs_bmdr_block_t *)XFS_DFORK_PTR_ARCH(dip, whichfork, ARCH_CONVERT);
698 size = XFS_BMAP_BROOT_SPACE(dfp);
699 nrecs = XFS_BMAP_BROOT_NUMRECS(dfp);
702 * blow out if -- fork has less extents than can fit in
703 * fork (fork shouldn't be a btree format), root btree
704 * block has more records than can fit into the fork,
705 * or the number of extents is greater than the number of
708 if (unlikely(XFS_IFORK_NEXTENTS(ip, whichfork) <= ifp->if_ext_max
709 || XFS_BMDR_SPACE_CALC(nrecs) >
710 XFS_DFORK_SIZE_ARCH(dip, ip->i_mount, whichfork, ARCH_CONVERT)
711 || XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks)) {
712 xfs_fs_cmn_err(CE_WARN, ip->i_mount,
713 "corrupt inode %Lu (btree). Unmount and run xfs_repair.",
714 (unsigned long long) ip->i_ino);
715 XFS_ERROR_REPORT("xfs_iformat_btree", XFS_ERRLEVEL_LOW,
717 return XFS_ERROR(EFSCORRUPTED);
720 ifp->if_broot_bytes = size;
721 ifp->if_broot = kmem_alloc(size, KM_SLEEP);
722 ASSERT(ifp->if_broot != NULL);
724 * Copy and convert from the on-disk structure
725 * to the in-memory structure.
727 xfs_bmdr_to_bmbt(dfp, XFS_DFORK_SIZE_ARCH(dip, ip->i_mount, whichfork, ARCH_CONVERT),
728 ifp->if_broot, size);
729 ifp->if_flags &= ~XFS_IFEXTENTS;
730 ifp->if_flags |= XFS_IFBROOT;
736 * xfs_xlate_dinode_core - translate an xfs_inode_core_t between ondisk
739 * buf = on-disk representation
740 * dip = native representation
741 * dir = direction - +ve -> disk to native
742 * -ve -> native to disk
743 * arch = on-disk architecture
746 xfs_xlate_dinode_core(
748 xfs_dinode_core_t *dip,
752 xfs_dinode_core_t *buf_core = (xfs_dinode_core_t *)buf;
753 xfs_dinode_core_t *mem_core = (xfs_dinode_core_t *)dip;
756 if (arch == ARCH_NOCONVERT) {
758 memcpy((xfs_caddr_t)mem_core, (xfs_caddr_t)buf_core,
759 sizeof(xfs_dinode_core_t));
761 memcpy((xfs_caddr_t)buf_core, (xfs_caddr_t)mem_core,
762 sizeof(xfs_dinode_core_t));
767 INT_XLATE(buf_core->di_magic, mem_core->di_magic, dir, arch);
768 INT_XLATE(buf_core->di_mode, mem_core->di_mode, dir, arch);
769 INT_XLATE(buf_core->di_version, mem_core->di_version, dir, arch);
770 INT_XLATE(buf_core->di_format, mem_core->di_format, dir, arch);
771 INT_XLATE(buf_core->di_onlink, mem_core->di_onlink, dir, arch);
772 INT_XLATE(buf_core->di_uid, mem_core->di_uid, dir, arch);
773 INT_XLATE(buf_core->di_gid, mem_core->di_gid, dir, arch);
774 INT_XLATE(buf_core->di_nlink, mem_core->di_nlink, dir, arch);
775 INT_XLATE(buf_core->di_projid, mem_core->di_projid, dir, arch);
778 memcpy(mem_core->di_pad, buf_core->di_pad,
779 sizeof(buf_core->di_pad));
781 memcpy(buf_core->di_pad, mem_core->di_pad,
782 sizeof(buf_core->di_pad));
785 INT_XLATE(buf_core->di_flushiter, mem_core->di_flushiter, dir, arch);
787 INT_XLATE(buf_core->di_atime.t_sec, mem_core->di_atime.t_sec,
789 INT_XLATE(buf_core->di_atime.t_nsec, mem_core->di_atime.t_nsec,
791 INT_XLATE(buf_core->di_mtime.t_sec, mem_core->di_mtime.t_sec,
793 INT_XLATE(buf_core->di_mtime.t_nsec, mem_core->di_mtime.t_nsec,
795 INT_XLATE(buf_core->di_ctime.t_sec, mem_core->di_ctime.t_sec,
797 INT_XLATE(buf_core->di_ctime.t_nsec, mem_core->di_ctime.t_nsec,
799 INT_XLATE(buf_core->di_size, mem_core->di_size, dir, arch);
800 INT_XLATE(buf_core->di_nblocks, mem_core->di_nblocks, dir, arch);
801 INT_XLATE(buf_core->di_extsize, mem_core->di_extsize, dir, arch);
802 INT_XLATE(buf_core->di_nextents, mem_core->di_nextents, dir, arch);
803 INT_XLATE(buf_core->di_anextents, mem_core->di_anextents, dir, arch);
804 INT_XLATE(buf_core->di_forkoff, mem_core->di_forkoff, dir, arch);
805 INT_XLATE(buf_core->di_aformat, mem_core->di_aformat, dir, arch);
806 INT_XLATE(buf_core->di_dmevmask, mem_core->di_dmevmask, dir, arch);
807 INT_XLATE(buf_core->di_dmstate, mem_core->di_dmstate, dir, arch);
808 INT_XLATE(buf_core->di_flags, mem_core->di_flags, dir, arch);
809 INT_XLATE(buf_core->di_gen, mem_core->di_gen, dir, arch);
813 * Given a mount structure and an inode number, return a pointer
814 * to a newly allocated in-core inode coresponding to the given
817 * Initialize the inode's attributes and extent pointers if it
818 * already has them (it will not if the inode has no links).
833 ASSERT(xfs_inode_zone != NULL);
835 ip = kmem_zone_zalloc(xfs_inode_zone, KM_SLEEP);
840 * Get pointer's to the on-disk inode and the buffer containing it.
841 * If the inode number refers to a block outside the file system
842 * then xfs_itobp() will return NULL. In this case we should
843 * return NULL as well. Set i_blkno to 0 so that xfs_itobp() will
844 * know that this is a new incore inode.
846 error = xfs_itobp(mp, tp, ip, &dip, &bp, bno);
849 kmem_zone_free(xfs_inode_zone, ip);
854 * Initialize inode's trace buffers.
855 * Do this before xfs_iformat in case it adds entries.
857 #ifdef XFS_BMAP_TRACE
858 ip->i_xtrace = ktrace_alloc(XFS_BMAP_KTRACE_SIZE, KM_SLEEP);
860 #ifdef XFS_BMBT_TRACE
861 ip->i_btrace = ktrace_alloc(XFS_BMBT_KTRACE_SIZE, KM_SLEEP);
864 ip->i_rwtrace = ktrace_alloc(XFS_RW_KTRACE_SIZE, KM_SLEEP);
866 #ifdef XFS_ILOCK_TRACE
867 ip->i_lock_trace = ktrace_alloc(XFS_ILOCK_KTRACE_SIZE, KM_SLEEP);
869 #ifdef XFS_DIR2_TRACE
870 ip->i_dir_trace = ktrace_alloc(XFS_DIR2_KTRACE_SIZE, KM_SLEEP);
874 * If we got something that isn't an inode it means someone
875 * (nfs or dmi) has a stale handle.
877 if (INT_GET(dip->di_core.di_magic, ARCH_CONVERT) != XFS_DINODE_MAGIC) {
878 kmem_zone_free(xfs_inode_zone, ip);
879 xfs_trans_brelse(tp, bp);
881 xfs_fs_cmn_err(CE_ALERT, mp, "xfs_iread: "
882 "dip->di_core.di_magic (0x%x) != "
883 "XFS_DINODE_MAGIC (0x%x)",
884 INT_GET(dip->di_core.di_magic, ARCH_CONVERT),
887 return XFS_ERROR(EINVAL);
891 * If the on-disk inode is already linked to a directory
892 * entry, copy all of the inode into the in-core inode.
893 * xfs_iformat() handles copying in the inode format
894 * specific information.
895 * Otherwise, just get the truly permanent information.
897 if (!INT_ISZERO(dip->di_core.di_mode, ARCH_CONVERT)) {
898 xfs_xlate_dinode_core((xfs_caddr_t)&dip->di_core,
899 &(ip->i_d), 1, ARCH_CONVERT);
900 error = xfs_iformat(ip, dip);
902 kmem_zone_free(xfs_inode_zone, ip);
903 xfs_trans_brelse(tp, bp);
905 xfs_fs_cmn_err(CE_ALERT, mp, "xfs_iread: "
906 "xfs_iformat() returned error %d",
912 ip->i_d.di_magic = INT_GET(dip->di_core.di_magic, ARCH_CONVERT);
913 ip->i_d.di_version = INT_GET(dip->di_core.di_version, ARCH_CONVERT);
914 ip->i_d.di_gen = INT_GET(dip->di_core.di_gen, ARCH_CONVERT);
915 ip->i_d.di_flushiter = INT_GET(dip->di_core.di_flushiter, ARCH_CONVERT);
917 * Make sure to pull in the mode here as well in
918 * case the inode is released without being used.
919 * This ensures that xfs_inactive() will see that
920 * the inode is already free and not try to mess
921 * with the uninitialized part of it.
925 * Initialize the per-fork minima and maxima for a new
926 * inode here. xfs_iformat will do it for old inodes.
928 ip->i_df.if_ext_max =
929 XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
932 /* XXXKAN: initialize i_reclaim */
933 bzero(&ip->i_reclaim, sizeof(&ip->i_reclaim));
936 * The inode format changed when we moved the link count and
937 * made it 32 bits long. If this is an old format inode,
938 * convert it in memory to look like a new one. If it gets
939 * flushed to disk we will convert back before flushing or
940 * logging it. We zero out the new projid field and the old link
941 * count field. We'll handle clearing the pad field (the remains
942 * of the old uuid field) when we actually convert the inode to
943 * the new format. We don't change the version number so that we
944 * can distinguish this from a real new format inode.
946 if (ip->i_d.di_version == XFS_DINODE_VERSION_1) {
947 ip->i_d.di_nlink = ip->i_d.di_onlink;
948 ip->i_d.di_onlink = 0;
949 ip->i_d.di_projid = 0;
952 ip->i_delayed_blks = 0;
955 * Mark the buffer containing the inode as something to keep
956 * around for a while. This helps to keep recently accessed
957 * meta-data in-core longer.
959 XFS_BUF_SET_REF(bp, XFS_INO_REF);
962 * Use xfs_trans_brelse() to release the buffer containing the
963 * on-disk inode, because it was acquired with xfs_trans_read_buf()
964 * in xfs_itobp() above. If tp is NULL, this is just a normal
965 * brelse(). If we're within a transaction, then xfs_trans_brelse()
966 * will only release the buffer if it is not dirty within the
967 * transaction. It will be OK to release the buffer in this case,
968 * because inodes on disk are never destroyed and we will be
969 * locking the new in-core inode before putting it in the hash
970 * table where other processes can find it. Thus we don't have
971 * to worry about the inode being changed just because we released
974 xfs_trans_brelse(tp, bp);
980 * Read in extents from a btree-format inode.
981 * Allocate and fill in if_extents. Real work is done in xfs_bmap.c.
993 if (unlikely(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) {
994 XFS_ERROR_REPORT("xfs_iread_extents", XFS_ERRLEVEL_LOW,
996 return XFS_ERROR(EFSCORRUPTED);
998 size = XFS_IFORK_NEXTENTS(ip, whichfork) * (uint)sizeof(xfs_bmbt_rec_t);
999 ifp = XFS_IFORK_PTR(ip, whichfork);
1001 * We know that the size is valid (it's checked in iformat_btree)
1003 ifp->if_u1.if_extents = kmem_alloc(size, KM_SLEEP);
1004 ASSERT(ifp->if_u1.if_extents != NULL);
1005 ifp->if_lastex = NULLEXTNUM;
1006 ifp->if_bytes = ifp->if_real_bytes = (int)size;
1007 ifp->if_flags |= XFS_IFEXTENTS;
1008 error = xfs_bmap_read_extents(tp, ip, whichfork);
1010 kmem_free(ifp->if_u1.if_extents, size);
1011 ifp->if_u1.if_extents = NULL;
1012 ifp->if_bytes = ifp->if_real_bytes = 0;
1013 ifp->if_flags &= ~XFS_IFEXTENTS;
1016 xfs_validate_extents((xfs_bmbt_rec_t *)ifp->if_u1.if_extents,
1017 XFS_IFORK_NEXTENTS(ip, whichfork), 0, XFS_EXTFMT_INODE(ip));
1022 * Allocate an inode on disk and return a copy of its in-core version.
1023 * The in-core inode is locked exclusively. Set mode, nlink, and rdev
1024 * appropriately within the inode. The uid and gid for the inode are
1025 * set according to the contents of the given cred structure.
1027 * Use xfs_dialloc() to allocate the on-disk inode. If xfs_dialloc()
1028 * has a free inode available, call xfs_iget()
1029 * to obtain the in-core version of the allocated inode. Finally,
1030 * fill in the inode and log its initial contents. In this case,
1031 * ialloc_context would be set to NULL and call_again set to false.
1033 * If xfs_dialloc() does not have an available inode,
1034 * it will replenish its supply by doing an allocation. Since we can
1035 * only do one allocation within a transaction without deadlocks, we
1036 * must commit the current transaction before returning the inode itself.
1037 * In this case, therefore, we will set call_again to true and return.
1038 * The caller should then commit the current transaction, start a new
1039 * transaction, and call xfs_ialloc() again to actually get the inode.
1041 * To ensure that some other process does not grab the inode that
1042 * was allocated during the first call to xfs_ialloc(), this routine
1043 * also returns the [locked] bp pointing to the head of the freelist
1044 * as ialloc_context. The caller should hold this buffer across
1045 * the commit and pass it back into this routine on the second call.
1057 xfs_buf_t **ialloc_context,
1058 boolean_t *call_again,
1068 * Call the space management code to pick
1069 * the on-disk inode to be allocated.
1071 ASSERT(pip != NULL);
1072 error = xfs_dialloc(tp, pip ? pip->i_ino : 0, mode, okalloc,
1073 ialloc_context, call_again, &ino);
1077 if (*call_again || ino == NULLFSINO) {
1081 ASSERT(*ialloc_context == NULL);
1084 * Get the in-core inode with the lock held exclusively.
1085 * This is because we're setting fields here we need
1086 * to prevent others from looking at until we're done.
1088 error = xfs_trans_iget(tp->t_mountp, tp, ino, XFS_ILOCK_EXCL, &ip);
1095 vp->v_type = IFTOVT(mode);
1096 ip->i_d.di_mode = (__uint16_t)mode;
1097 ip->i_d.di_onlink = 0;
1098 ip->i_d.di_nlink = nlink;
1099 ASSERT(ip->i_d.di_nlink == nlink);
1100 ip->i_d.di_uid = curthread->td_ucred->cr_uid;
1101 ip->i_d.di_gid = curthread->td_ucred->cr_groups[0];
1102 ip->i_d.di_projid = prid;
1103 memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad));
1106 * If the superblock version is up to where we support new format
1107 * inodes and this is currently an old format inode, then change
1108 * the inode version number now. This way we only do the conversion
1109 * here rather than here and in the flush/logging code.
1111 if (XFS_SB_VERSION_HASNLINK(&tp->t_mountp->m_sb) &&
1112 ip->i_d.di_version == XFS_DINODE_VERSION_1) {
1113 ip->i_d.di_version = XFS_DINODE_VERSION_2;
1115 * We've already zeroed the old link count, the projid field,
1116 * and the pad field.
1121 * Project ids won't be stored on disk if we are using a version 1 inode.
1123 if ( (prid != 0) && (ip->i_d.di_version == XFS_DINODE_VERSION_1))
1124 xfs_bump_ino_vers2(tp, ip);
1126 if (XFS_INHERIT_GID(pip, vp->v_vfsp)) {
1127 ip->i_d.di_gid = pip->i_d.di_gid;
1128 if ((pip->i_d.di_mode & S_ISGID) && (mode & S_IFMT) == S_IFDIR) {
1129 ip->i_d.di_mode |= S_ISGID;
1134 * If the group ID of the new file does not match the effective group
1135 * ID or one of the supplementary group IDs, the S_ISGID bit is cleared
1136 * (and only if the irix_sgid_inherit compatibility variable is set).
1138 if ((irix_sgid_inherit) &&
1139 (ip->i_d.di_mode & S_ISGID) &&
1140 (!groupmember((gid_t)ip->i_d.di_gid, curthread->td_ucred))) {
1141 ip->i_d.di_mode &= ~S_ISGID;
1144 ip->i_d.di_size = 0;
1145 ip->i_d.di_nextents = 0;
1146 ASSERT(ip->i_d.di_nblocks == 0);
1147 xfs_ichgtime(ip, XFS_ICHGTIME_CHG|XFS_ICHGTIME_ACC|XFS_ICHGTIME_MOD);
1149 * di_gen will have been taken care of in xfs_iread.
1151 ip->i_d.di_extsize = 0;
1152 ip->i_d.di_dmevmask = 0;
1153 ip->i_d.di_dmstate = 0;
1154 ip->i_d.di_flags = 0;
1155 flags = XFS_ILOG_CORE;
1156 switch (mode & S_IFMT) {
1161 ip->i_d.di_format = XFS_DINODE_FMT_DEV;
1162 ip->i_df.if_u2.if_rdev = rdev;
1163 ip->i_df.if_flags = 0;
1164 flags |= XFS_ILOG_DEV;
1168 if (pip->i_d.di_flags &
1169 (XFS_DIFLAG_NOATIME|XFS_DIFLAG_NODUMP|XFS_DIFLAG_SYNC)) {
1170 if ((pip->i_d.di_flags & XFS_DIFLAG_NOATIME) &&
1171 xfs_inherit_noatime)
1172 ip->i_d.di_flags |= XFS_DIFLAG_NOATIME;
1173 if ((pip->i_d.di_flags & XFS_DIFLAG_NODUMP) &&
1175 ip->i_d.di_flags |= XFS_DIFLAG_NODUMP;
1176 if ((pip->i_d.di_flags & XFS_DIFLAG_SYNC) &&
1178 ip->i_d.di_flags |= XFS_DIFLAG_SYNC;
1181 ip->i_d.di_format = XFS_DINODE_FMT_EXTENTS;
1182 ip->i_df.if_flags = XFS_IFEXTENTS;
1183 ip->i_df.if_bytes = ip->i_df.if_real_bytes = 0;
1184 ip->i_df.if_u1.if_extents = NULL;
1190 * Attribute fork settings for new inode.
1192 ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
1193 ip->i_d.di_anextents = 0;
1196 * Log the new values stuffed into the inode.
1198 xfs_trans_log_inode(tp, ip, flags);
1200 /* now that we have a v_type we can set Linux inode ops (& unlock) */
1201 XVFS_INIT_VNODE(XFS_MTOVFS(tp->t_mountp), vp, XFS_ITOBHV(ip), 1);
1208 * Check to make sure that there are no blocks allocated to the
1209 * file beyond the size of the file. We don't check this for
1210 * files with fixed size extents or real time extents, but we
1211 * at least do it for regular files.
1220 xfs_fileoff_t map_first;
1222 xfs_bmbt_irec_t imaps[2];
1224 if ((ip->i_d.di_mode & S_IFMT) != S_IFREG)
1227 if ( ip->i_d.di_flags & XFS_DIFLAG_REALTIME )
1231 map_first = XFS_B_TO_FSB(mp, (xfs_ufsize_t)isize);
1233 * The filesystem could be shutting down, so bmapi may return
1236 if (xfs_bmapi(NULL, ip, map_first,
1238 (xfs_ufsize_t)XFS_MAXIOFFSET(mp)) -
1240 XFS_BMAPI_ENTIRE, NULL, 0, imaps, &nimaps,
1243 ASSERT(nimaps == 1);
1244 ASSERT(imaps[0].br_startblock == HOLESTARTBLOCK);
1249 * Calculate the last possible buffered byte in a file. This must
1250 * include data that was buffered beyond the EOF by the write code.
1251 * This also needs to deal with overflowing the xfs_fsize_t type
1252 * which can happen for sizes near the limit.
1254 * We also need to take into account any blocks beyond the EOF. It
1255 * may be the case that they were buffered by a write which failed.
1256 * In that case the pages will still be in memory, but the inode size
1257 * will never have been updated.
1264 xfs_fsize_t last_byte;
1265 xfs_fileoff_t last_block;
1266 xfs_fileoff_t size_last_block;
1269 ASSERT(ismrlocked(&(ip->i_iolock), MR_UPDATE | MR_ACCESS));
1273 * Only check for blocks beyond the EOF if the extents have
1274 * been read in. This eliminates the need for the inode lock,
1275 * and it also saves us from looking when it really isn't
1278 if (ip->i_df.if_flags & XFS_IFEXTENTS) {
1279 error = xfs_bmap_last_offset(NULL, ip, &last_block,
1287 size_last_block = XFS_B_TO_FSB(mp, (xfs_ufsize_t)ip->i_d.di_size);
1288 last_block = XFS_FILEOFF_MAX(last_block, size_last_block);
1290 last_byte = XFS_FSB_TO_B(mp, last_block);
1291 if (last_byte < 0) {
1292 return XFS_MAXIOFFSET(mp);
1294 last_byte += (1 << mp->m_writeio_log);
1295 if (last_byte < 0) {
1296 return XFS_MAXIOFFSET(mp);
1301 #if defined(XFS_RW_TRACE)
1307 xfs_fsize_t new_size,
1308 xfs_off_t toss_start,
1309 xfs_off_t toss_finish)
1311 if (ip->i_rwtrace == NULL) {
1315 ktrace_enter(ip->i_rwtrace,
1318 (void*)(unsigned long)((ip->i_d.di_size >> 32) & 0xffffffff),
1319 (void*)(unsigned long)(ip->i_d.di_size & 0xffffffff),
1320 (void*)((long)flag),
1321 (void*)(unsigned long)((new_size >> 32) & 0xffffffff),
1322 (void*)(unsigned long)(new_size & 0xffffffff),
1323 (void*)(unsigned long)((toss_start >> 32) & 0xffffffff),
1324 (void*)(unsigned long)(toss_start & 0xffffffff),
1325 (void*)(unsigned long)((toss_finish >> 32) & 0xffffffff),
1326 (void*)(unsigned long)(toss_finish & 0xffffffff),
1327 (void*)(unsigned long)current_cpu(),
1334 #define xfs_itrunc_trace(tag, ip, flag, new_size, toss_start, toss_finish)
1338 * Start the truncation of the file to new_size. The new size
1339 * must be smaller than the current size. This routine will
1340 * clear the buffer and page caches of file data in the removed
1341 * range, and xfs_itruncate_finish() will remove the underlying
1344 * The inode must have its I/O lock locked EXCLUSIVELY, and it
1345 * must NOT have the inode lock held at all. This is because we're
1346 * calling into the buffer/page cache code and we can't hold the
1347 * inode lock when we do so.
1349 * The flags parameter can have either the value XFS_ITRUNC_DEFINITE
1350 * or XFS_ITRUNC_MAYBE. The XFS_ITRUNC_MAYBE value should be used
1351 * in the case that the caller is locking things out of order and
1352 * may not be able to call xfs_itruncate_finish() with the inode lock
1353 * held without dropping the I/O lock. If the caller must drop the
1354 * I/O lock before calling xfs_itruncate_finish(), then xfs_itruncate_start()
1355 * must be called again with all the same restrictions as the initial
1359 xfs_itruncate_start(
1362 xfs_fsize_t new_size)
1364 xfs_fsize_t last_byte;
1365 xfs_off_t toss_start;
1369 ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE) != 0);
1370 ASSERT((new_size == 0) || (new_size <= ip->i_d.di_size));
1371 ASSERT((flags == XFS_ITRUNC_DEFINITE) ||
1372 (flags == XFS_ITRUNC_MAYBE));
1377 * Call VOP_TOSS_PAGES() or VOP_FLUSHINVAL_PAGES() to get rid of pages and buffers
1378 * overlapping the region being removed. We have to use
1379 * the less efficient VOP_FLUSHINVAL_PAGES() in the case that the
1380 * caller may not be able to finish the truncate without
1381 * dropping the inode's I/O lock. Make sure
1382 * to catch any pages brought in by buffers overlapping
1383 * the EOF by searching out beyond the isize by our
1384 * block size. We round new_size up to a block boundary
1385 * so that we don't toss things on the same block as
1386 * new_size but before it.
1388 * Before calling VOP_TOSS_PAGES() or VOP_FLUSHINVAL_PAGES(), make sure to
1389 * call remapf() over the same region if the file is mapped.
1390 * This frees up mapped file references to the pages in the
1391 * given range and for the VOP_FLUSHINVAL_PAGES() case it ensures
1392 * that we get the latest mapped changes flushed out.
1394 toss_start = XFS_B_TO_FSB(mp, (xfs_ufsize_t)new_size);
1395 toss_start = XFS_FSB_TO_B(mp, toss_start);
1396 if (toss_start < 0) {
1398 * The place to start tossing is beyond our maximum
1399 * file size, so there is no way that the data extended
1404 last_byte = xfs_file_last_byte(ip);
1405 xfs_itrunc_trace(XFS_ITRUNC_START, ip, flags, new_size, toss_start,
1407 if (last_byte > toss_start) {
1408 if (flags & XFS_ITRUNC_DEFINITE) {
1409 XVOP_TOSS_PAGES(vp, toss_start, -1, FI_REMAPF_LOCKED);
1411 XVOP_FLUSHINVAL_PAGES(vp, toss_start, -1, FI_REMAPF_LOCKED);
1416 if (new_size == 0) {
1417 ASSERT(VN_CACHED(vp) == 0);
1423 * Shrink the file to the given new_size. The new
1424 * size must be smaller than the current size.
1425 * This will free up the underlying blocks
1426 * in the removed range after a call to xfs_itruncate_start()
1427 * or xfs_atruncate_start().
1429 * The transaction passed to this routine must have made
1430 * a permanent log reservation of at least XFS_ITRUNCATE_LOG_RES.
1431 * This routine may commit the given transaction and
1432 * start new ones, so make sure everything involved in
1433 * the transaction is tidy before calling here.
1434 * Some transaction will be returned to the caller to be
1435 * committed. The incoming transaction must already include
1436 * the inode, and both inode locks must be held exclusively.
1437 * The inode must also be "held" within the transaction. On
1438 * return the inode will be "held" within the returned transaction.
1439 * This routine does NOT require any disk space to be reserved
1440 * for it within the transaction.
1442 * The fork parameter must be either xfs_attr_fork or xfs_data_fork,
1443 * and it indicates the fork which is to be truncated. For the
1444 * attribute fork we only support truncation to size 0.
1446 * We use the sync parameter to indicate whether or not the first
1447 * transaction we perform might have to be synchronous. For the attr fork,
1448 * it needs to be so if the unlink of the inode is not yet known to be
1449 * permanent in the log. This keeps us from freeing and reusing the
1450 * blocks of the attribute fork before the unlink of the inode becomes
1453 * For the data fork, we normally have to run synchronously if we're
1454 * being called out of the inactive path or we're being called
1455 * out of the create path where we're truncating an existing file.
1456 * Either way, the truncate needs to be sync so blocks don't reappear
1457 * in the file with altered data in case of a crash. wsync filesystems
1458 * can run the first case async because anything that shrinks the inode
1459 * has to run sync so by the time we're called here from inactive, the
1460 * inode size is permanently set to 0.
1462 * Calls from the truncate path always need to be sync unless we're
1463 * in a wsync filesystem and the file has already been unlinked.
1465 * The caller is responsible for correctly setting the sync parameter.
1466 * It gets too hard for us to guess here which path we're being called
1467 * out of just based on inode state.
1470 xfs_itruncate_finish(
1473 xfs_fsize_t new_size,
1477 xfs_fsblock_t first_block;
1478 xfs_fileoff_t first_unmap_block;
1479 xfs_fileoff_t last_block;
1480 xfs_filblks_t unmap_len=0;
1485 xfs_bmap_free_t free_list;
1488 ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE) != 0);
1489 ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE) != 0);
1490 ASSERT((new_size == 0) || (new_size <= ip->i_d.di_size));
1491 ASSERT(*tp != NULL);
1492 ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES);
1493 ASSERT(ip->i_transp == *tp);
1494 ASSERT(ip->i_itemp != NULL);
1495 ASSERT(ip->i_itemp->ili_flags & XFS_ILI_HOLD);
1499 mp = (ntp)->t_mountp;
1500 ASSERT(! XFS_NOT_DQATTACHED(mp, ip));
1503 * We only support truncating the entire attribute fork.
1505 if (fork == XFS_ATTR_FORK) {
1508 first_unmap_block = XFS_B_TO_FSB(mp, (xfs_ufsize_t)new_size);
1509 xfs_itrunc_trace(XFS_ITRUNC_FINISH1, ip, 0, new_size, 0, 0);
1511 * The first thing we do is set the size to new_size permanently
1512 * on disk. This way we don't have to worry about anyone ever
1513 * being able to look at the data being freed even in the face
1514 * of a crash. What we're getting around here is the case where
1515 * we free a block, it is allocated to another file, it is written
1516 * to, and then we crash. If the new data gets written to the
1517 * file but the log buffers containing the free and reallocation
1518 * don't, then we'd end up with garbage in the blocks being freed.
1519 * As long as we make the new_size permanent before actually
1520 * freeing any blocks it doesn't matter if they get writtten to.
1522 * The callers must signal into us whether or not the size
1523 * setting here must be synchronous. There are a few cases
1524 * where it doesn't have to be synchronous. Those cases
1525 * occur if the file is unlinked and we know the unlink is
1526 * permanent or if the blocks being truncated are guaranteed
1527 * to be beyond the inode eof (regardless of the link count)
1528 * and the eof value is permanent. Both of these cases occur
1529 * only on wsync-mounted filesystems. In those cases, we're
1530 * guaranteed that no user will ever see the data in the blocks
1531 * that are being truncated so the truncate can run async.
1532 * In the free beyond eof case, the file may wind up with
1533 * more blocks allocated to it than it needs if we crash
1534 * and that won't get fixed until the next time the file
1535 * is re-opened and closed but that's ok as that shouldn't
1536 * be too many blocks.
1538 * However, we can't just make all wsync xactions run async
1539 * because there's one call out of the create path that needs
1540 * to run sync where it's truncating an existing file to size
1541 * 0 whose size is > 0.
1543 * It's probably possible to come up with a test in this
1544 * routine that would correctly distinguish all the above
1545 * cases from the values of the function parameters and the
1546 * inode state but for sanity's sake, I've decided to let the
1547 * layers above just tell us. It's simpler to correctly figure
1548 * out in the layer above exactly under what conditions we
1549 * can run async and I think it's easier for others read and
1550 * follow the logic in case something has to be changed.
1551 * cscope is your friend -- rcc.
1553 * The attribute fork is much simpler.
1555 * For the attribute fork we allow the caller to tell us whether
1556 * the unlink of the inode that led to this call is yet permanent
1557 * in the on disk log. If it is not and we will be freeing extents
1558 * in this inode then we make the first transaction synchronous
1559 * to make sure that the unlink is permanent by the time we free
1562 if (fork == XFS_DATA_FORK) {
1563 if (ip->i_d.di_nextents > 0) {
1564 ip->i_d.di_size = new_size;
1565 xfs_trans_log_inode(ntp, ip, XFS_ILOG_CORE);
1568 ASSERT(!(mp->m_flags & XFS_MOUNT_WSYNC));
1569 if (ip->i_d.di_anextents > 0)
1570 xfs_trans_set_sync(ntp);
1572 ASSERT(fork == XFS_DATA_FORK ||
1573 (fork == XFS_ATTR_FORK &&
1574 ((sync && !(mp->m_flags & XFS_MOUNT_WSYNC)) ||
1575 (sync == 0 && (mp->m_flags & XFS_MOUNT_WSYNC)))));
1578 * Since it is possible for space to become allocated beyond
1579 * the end of the file (in a crash where the space is allocated
1580 * but the inode size is not yet updated), simply remove any
1581 * blocks which show up between the new EOF and the maximum
1582 * possible file size. If the first block to be removed is
1583 * beyond the maximum file size (ie it is the same as last_block),
1584 * then there is nothing to do.
1586 last_block = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp));
1587 ASSERT(first_unmap_block <= last_block);
1589 if (last_block == first_unmap_block) {
1592 unmap_len = last_block - first_unmap_block + 1;
1596 * Free up up to XFS_ITRUNC_MAX_EXTENTS. xfs_bunmapi()
1597 * will tell us whether it freed the entire range or
1598 * not. If this is a synchronous mount (wsync),
1599 * then we can tell bunmapi to keep all the
1600 * transactions asynchronous since the unlink
1601 * transaction that made this inode inactive has
1602 * already hit the disk. There's no danger of
1603 * the freed blocks being reused, there being a
1604 * crash, and the reused blocks suddenly reappearing
1605 * in this file with garbage in them once recovery
1608 XFS_BMAP_INIT(&free_list, &first_block);
1609 error = xfs_bunmapi(ntp, ip, first_unmap_block,
1611 XFS_BMAPI_AFLAG(fork) |
1612 (sync ? 0 : XFS_BMAPI_ASYNC),
1613 XFS_ITRUNC_MAX_EXTENTS,
1614 &first_block, &free_list, &done);
1617 * If the bunmapi call encounters an error,
1618 * return to the caller where the transaction
1619 * can be properly aborted. We just need to
1620 * make sure we're not holding any resources
1621 * that we were not when we came in.
1623 xfs_bmap_cancel(&free_list);
1628 * Duplicate the transaction that has the permanent
1629 * reservation and commit the old transaction.
1631 error = xfs_bmap_finish(tp, &free_list, first_block,
1636 * If the bmap finish call encounters an error,
1637 * return to the caller where the transaction
1638 * can be properly aborted. We just need to
1639 * make sure we're not holding any resources
1640 * that we were not when we came in.
1642 * Aborting from this point might lose some
1643 * blocks in the file system, but oh well.
1645 xfs_bmap_cancel(&free_list);
1648 * If the passed in transaction committed
1649 * in xfs_bmap_finish(), then we want to
1650 * add the inode to this one before returning.
1651 * This keeps things simple for the higher
1652 * level code, because it always knows that
1653 * the inode is locked and held in the
1654 * transaction that returns to it whether
1655 * errors occur or not. We don't mark the
1656 * inode dirty so that this transaction can
1657 * be easily aborted if possible.
1659 xfs_trans_ijoin(ntp, ip,
1660 XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
1661 xfs_trans_ihold(ntp, ip);
1668 * The first xact was committed,
1669 * so add the inode to the new one.
1670 * Mark it dirty so it will be logged
1671 * and moved forward in the log as
1672 * part of every commit.
1674 xfs_trans_ijoin(ntp, ip,
1675 XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
1676 xfs_trans_ihold(ntp, ip);
1677 xfs_trans_log_inode(ntp, ip, XFS_ILOG_CORE);
1679 ntp = xfs_trans_dup(ntp);
1680 (void) xfs_trans_commit(*tp, 0, NULL);
1682 error = xfs_trans_reserve(ntp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
1683 XFS_TRANS_PERM_LOG_RES,
1684 XFS_ITRUNCATE_LOG_COUNT);
1686 * Add the inode being truncated to the next chained
1689 xfs_trans_ijoin(ntp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
1690 xfs_trans_ihold(ntp, ip);
1695 * Only update the size in the case of the data fork, but
1696 * always re-log the inode so that our permanent transaction
1697 * can keep on rolling it forward in the log.
1699 if (fork == XFS_DATA_FORK) {
1700 xfs_isize_check(mp, ip, new_size);
1701 ip->i_d.di_size = new_size;
1703 xfs_trans_log_inode(ntp, ip, XFS_ILOG_CORE);
1704 ASSERT((new_size != 0) ||
1705 (fork == XFS_ATTR_FORK) ||
1706 (ip->i_delayed_blks == 0));
1707 ASSERT((new_size != 0) ||
1708 (fork == XFS_ATTR_FORK) ||
1709 (ip->i_d.di_nextents == 0));
1710 xfs_itrunc_trace(XFS_ITRUNC_FINISH2, ip, 0, new_size, 0, 0);
1718 * Do the first part of growing a file: zero any data in the last
1719 * block that is beyond the old EOF. We need to do this before
1720 * the inode is joined to the transaction to modify the i_size.
1721 * That way we can drop the inode lock and call into the buffer
1722 * cache to get the buffer mapping the EOF.
1727 xfs_fsize_t new_size,
1733 ASSERT(ismrlocked(&(ip->i_lock), MR_UPDATE) != 0);
1734 ASSERT(ismrlocked(&(ip->i_iolock), MR_UPDATE) != 0);
1735 ASSERT(new_size > ip->i_d.di_size);
1738 isize = ip->i_d.di_size;
1740 * Zero any pages that may have been created by
1741 * xfs_write_file() beyond the end of the file
1742 * and any blocks between the old and new file sizes.
1744 error = xfs_zero_eof(XFS_ITOV(ip), &ip->i_iocore, new_size, isize,
1752 * This routine is called to extend the size of a file.
1753 * The inode must have both the iolock and the ilock locked
1754 * for update and it must be a part of the current transaction.
1755 * The xfs_igrow_start() function must have been called previously.
1756 * If the change_flag is not zero, the inode change timestamp will
1763 xfs_fsize_t new_size,
1766 ASSERT(ismrlocked(&(ip->i_lock), MR_UPDATE) != 0);
1767 ASSERT(ismrlocked(&(ip->i_iolock), MR_UPDATE) != 0);
1768 ASSERT(ip->i_transp == tp);
1769 ASSERT(new_size > ip->i_d.di_size);
1772 * Update the file size. Update the inode change timestamp
1773 * if change_flag set.
1775 ip->i_d.di_size = new_size;
1777 xfs_ichgtime(ip, XFS_ICHGTIME_CHG);
1778 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1784 * This is called when the inode's link count goes to 0.
1785 * We place the on-disk inode on a list in the AGI. It
1786 * will be pulled from this list when the inode is freed.
1798 xfs_agnumber_t agno;
1799 xfs_daddr_t agdaddr;
1806 ASSERT(ip->i_d.di_nlink == 0);
1807 ASSERT(ip->i_d.di_mode != 0);
1808 ASSERT(ip->i_transp == tp);
1812 agno = XFS_INO_TO_AGNO(mp, ip->i_ino);
1813 agdaddr = XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp));
1816 * Get the agi buffer first. It ensures lock ordering
1819 error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, agdaddr,
1820 XFS_FSS_TO_BB(mp, 1), 0, &agibp);
1825 * Validate the magic number of the agi block.
1827 agi = XFS_BUF_TO_AGI(agibp);
1829 INT_GET(agi->agi_magicnum, ARCH_CONVERT) == XFS_AGI_MAGIC &&
1830 XFS_AGI_GOOD_VERSION(INT_GET(agi->agi_versionnum, ARCH_CONVERT));
1831 if (unlikely(XFS_TEST_ERROR(!agi_ok, mp, XFS_ERRTAG_IUNLINK,
1832 XFS_RANDOM_IUNLINK))) {
1833 XFS_CORRUPTION_ERROR("xfs_iunlink", XFS_ERRLEVEL_LOW, mp, agi);
1834 xfs_trans_brelse(tp, agibp);
1835 return XFS_ERROR(EFSCORRUPTED);
1838 * Get the index into the agi hash table for the
1839 * list this inode will go on.
1841 agino = XFS_INO_TO_AGINO(mp, ip->i_ino);
1843 bucket_index = agino % XFS_AGI_UNLINKED_BUCKETS;
1844 ASSERT(!INT_ISZERO(agi->agi_unlinked[bucket_index], ARCH_CONVERT));
1845 ASSERT(INT_GET(agi->agi_unlinked[bucket_index], ARCH_CONVERT) != agino);
1847 if (INT_GET(agi->agi_unlinked[bucket_index], ARCH_CONVERT) != NULLAGINO) {
1849 * There is already another inode in the bucket we need
1850 * to add ourselves to. Add us at the front of the list.
1851 * Here we put the head pointer into our next pointer,
1852 * and then we fall through to point the head at us.
1854 error = xfs_itobp(mp, tp, ip, &dip, &ibp, 0);
1858 ASSERT(INT_GET(dip->di_next_unlinked, ARCH_CONVERT) == NULLAGINO);
1859 ASSERT(!INT_ISZERO(dip->di_next_unlinked, ARCH_CONVERT));
1860 /* both on-disk, don't endian flip twice */
1861 dip->di_next_unlinked = agi->agi_unlinked[bucket_index];
1862 offset = ip->i_boffset +
1863 offsetof(xfs_dinode_t, di_next_unlinked);
1864 xfs_trans_inode_buf(tp, ibp);
1865 xfs_trans_log_buf(tp, ibp, offset,
1866 (offset + sizeof(xfs_agino_t) - 1));
1867 xfs_inobp_check(mp, ibp);
1871 * Point the bucket head pointer at the inode being inserted.
1874 INT_SET(agi->agi_unlinked[bucket_index], ARCH_CONVERT, agino);
1875 offset = offsetof(xfs_agi_t, agi_unlinked) +
1876 (sizeof(xfs_agino_t) * bucket_index);
1877 xfs_trans_log_buf(tp, agibp, offset,
1878 (offset + sizeof(xfs_agino_t) - 1));
1883 * Pull the on-disk inode from the AGI unlinked list.
1896 xfs_agnumber_t agno;
1897 xfs_daddr_t agdaddr;
1899 xfs_agino_t next_agino;
1900 xfs_buf_t *last_ibp;
1901 xfs_dinode_t *last_dip;
1903 int offset, last_offset;
1908 * First pull the on-disk inode from the AGI unlinked list.
1912 agno = XFS_INO_TO_AGNO(mp, ip->i_ino);
1913 agdaddr = XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp));
1916 * Get the agi buffer first. It ensures lock ordering
1919 error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, agdaddr,
1920 XFS_FSS_TO_BB(mp, 1), 0, &agibp);
1923 "xfs_iunlink_remove: xfs_trans_read_buf() returned an error %d on %s. Returning error.",
1924 error, mp->m_fsname);
1928 * Validate the magic number of the agi block.
1930 agi = XFS_BUF_TO_AGI(agibp);
1932 INT_GET(agi->agi_magicnum, ARCH_CONVERT) == XFS_AGI_MAGIC &&
1933 XFS_AGI_GOOD_VERSION(INT_GET(agi->agi_versionnum, ARCH_CONVERT));
1934 if (unlikely(XFS_TEST_ERROR(!agi_ok, mp, XFS_ERRTAG_IUNLINK_REMOVE,
1935 XFS_RANDOM_IUNLINK_REMOVE))) {
1936 XFS_CORRUPTION_ERROR("xfs_iunlink_remove", XFS_ERRLEVEL_LOW,
1938 xfs_trans_brelse(tp, agibp);
1940 "xfs_iunlink_remove: XFS_TEST_ERROR() returned an error on %s. Returning EFSCORRUPTED.",
1942 return XFS_ERROR(EFSCORRUPTED);
1945 * Get the index into the agi hash table for the
1946 * list this inode will go on.
1948 agino = XFS_INO_TO_AGINO(mp, ip->i_ino);
1950 bucket_index = agino % XFS_AGI_UNLINKED_BUCKETS;
1951 ASSERT(INT_GET(agi->agi_unlinked[bucket_index], ARCH_CONVERT) != NULLAGINO);
1952 ASSERT(!INT_ISZERO(agi->agi_unlinked[bucket_index], ARCH_CONVERT));
1954 if (INT_GET(agi->agi_unlinked[bucket_index], ARCH_CONVERT) == agino) {
1956 * We're at the head of the list. Get the inode's
1957 * on-disk buffer to see if there is anyone after us
1958 * on the list. Only modify our next pointer if it
1959 * is not already NULLAGINO. This saves us the overhead
1960 * of dealing with the buffer when there is no need to
1963 error = xfs_itobp(mp, tp, ip, &dip, &ibp, 0);
1966 "xfs_iunlink_remove: xfs_itobp() returned an error %d on %s. Returning error.",
1967 error, mp->m_fsname);
1970 next_agino = INT_GET(dip->di_next_unlinked, ARCH_CONVERT);
1971 ASSERT(next_agino != 0);
1972 if (next_agino != NULLAGINO) {
1973 INT_SET(dip->di_next_unlinked, ARCH_CONVERT, NULLAGINO);
1974 offset = ip->i_boffset +
1975 offsetof(xfs_dinode_t, di_next_unlinked);
1976 xfs_trans_inode_buf(tp, ibp);
1977 xfs_trans_log_buf(tp, ibp, offset,
1978 (offset + sizeof(xfs_agino_t) - 1));
1979 xfs_inobp_check(mp, ibp);
1981 xfs_trans_brelse(tp, ibp);
1984 * Point the bucket head pointer at the next inode.
1986 ASSERT(next_agino != 0);
1987 ASSERT(next_agino != agino);
1988 INT_SET(agi->agi_unlinked[bucket_index], ARCH_CONVERT, next_agino);
1989 offset = offsetof(xfs_agi_t, agi_unlinked) +
1990 (sizeof(xfs_agino_t) * bucket_index);
1991 xfs_trans_log_buf(tp, agibp, offset,
1992 (offset + sizeof(xfs_agino_t) - 1));
1995 * We need to search the list for the inode being freed.
1997 next_agino = INT_GET(agi->agi_unlinked[bucket_index], ARCH_CONVERT);
1999 while (next_agino != agino) {
2001 * If the last inode wasn't the one pointing to
2002 * us, then release its buffer since we're not
2003 * going to do anything with it.
2005 if (last_ibp != NULL) {
2006 xfs_trans_brelse(tp, last_ibp);
2008 next_ino = XFS_AGINO_TO_INO(mp, agno, next_agino);
2009 error = xfs_inotobp(mp, tp, next_ino, &last_dip,
2010 &last_ibp, &last_offset);
2013 "xfs_iunlink_remove: xfs_inotobp() returned an error %d on %s. Returning error.",
2014 error, mp->m_fsname);
2017 next_agino = INT_GET(last_dip->di_next_unlinked, ARCH_CONVERT);
2018 ASSERT(next_agino != NULLAGINO);
2019 ASSERT(next_agino != 0);
2022 * Now last_ibp points to the buffer previous to us on
2023 * the unlinked list. Pull us from the list.
2025 error = xfs_itobp(mp, tp, ip, &dip, &ibp, 0);
2028 "xfs_iunlink_remove: xfs_itobp() returned an error %d on %s. Returning error.",
2029 error, mp->m_fsname);
2032 next_agino = INT_GET(dip->di_next_unlinked, ARCH_CONVERT);
2033 ASSERT(next_agino != 0);
2034 ASSERT(next_agino != agino);
2035 if (next_agino != NULLAGINO) {
2036 INT_SET(dip->di_next_unlinked, ARCH_CONVERT, NULLAGINO);
2037 offset = ip->i_boffset +
2038 offsetof(xfs_dinode_t, di_next_unlinked);
2039 xfs_trans_inode_buf(tp, ibp);
2040 xfs_trans_log_buf(tp, ibp, offset,
2041 (offset + sizeof(xfs_agino_t) - 1));
2042 xfs_inobp_check(mp, ibp);
2044 xfs_trans_brelse(tp, ibp);
2047 * Point the previous inode on the list to the next inode.
2049 INT_SET(last_dip->di_next_unlinked, ARCH_CONVERT, next_agino);
2050 ASSERT(next_agino != 0);
2051 offset = last_offset + offsetof(xfs_dinode_t, di_next_unlinked);
2052 xfs_trans_inode_buf(tp, last_ibp);
2053 xfs_trans_log_buf(tp, last_ibp, offset,
2054 (offset + sizeof(xfs_agino_t) - 1));
2055 xfs_inobp_check(mp, last_ibp);
2060 static __inline__ int xfs_inode_clean(xfs_inode_t *ip)
2062 return (((ip->i_itemp == NULL) ||
2063 !(ip->i_itemp->ili_format.ilf_fields & XFS_ILOG_ALL)) &&
2064 (ip->i_update_core == 0));
2069 xfs_inode_t *free_ip,
2073 xfs_mount_t *mp = free_ip->i_mount;
2074 int blks_per_cluster;
2077 int i, j, found, pre_flushed;
2081 xfs_inode_t *ip, **ip_found;
2082 xfs_inode_log_item_t *iip;
2083 xfs_log_item_t *lip;
2086 if (mp->m_sb.sb_blocksize >= XFS_INODE_CLUSTER_SIZE(mp)) {
2087 blks_per_cluster = 1;
2088 ninodes = mp->m_sb.sb_inopblock;
2089 nbufs = XFS_IALLOC_BLOCKS(mp);
2091 blks_per_cluster = XFS_INODE_CLUSTER_SIZE(mp) /
2092 mp->m_sb.sb_blocksize;
2093 ninodes = blks_per_cluster * mp->m_sb.sb_inopblock;
2094 nbufs = XFS_IALLOC_BLOCKS(mp) / blks_per_cluster;
2097 ip_found = kmem_alloc(ninodes * sizeof(xfs_inode_t *), KM_NOFS);
2099 for (j = 0; j < nbufs; j++, inum += ninodes) {
2100 blkno = XFS_AGB_TO_DADDR(mp, XFS_INO_TO_AGNO(mp, inum),
2101 XFS_INO_TO_AGBNO(mp, inum));
2105 * Look for each inode in memory and attempt to lock it,
2106 * we can be racing with flush and tail pushing here.
2107 * any inode we get the locks on, add to an array of
2108 * inode items to process later.
2110 * The get the buffer lock, we could beat a flush
2111 * or tail pushing thread to the lock here, in which
2112 * case they will go looking for the inode buffer
2113 * and fail, we need some other form of interlock
2117 for (i = 0; i < ninodes; i++) {
2118 ih = XFS_IHASH(mp, inum + i);
2119 read_lock(&ih->ih_lock);
2120 for (ip = ih->ih_next; ip != NULL; ip = ip->i_next) {
2121 if (ip->i_ino == inum + i)
2125 /* Inode not in memory or we found it already,
2128 if (!ip || (ip->i_flags & XFS_ISTALE)) {
2129 read_unlock(&ih->ih_lock);
2133 if (xfs_inode_clean(ip)) {
2134 read_unlock(&ih->ih_lock);
2138 /* If we can get the locks then add it to the
2139 * list, otherwise by the time we get the bp lock
2140 * below it will already be attached to the
2144 /* This inode will already be locked - by us, lets
2148 if (ip == free_ip) {
2149 if (xfs_iflock_nowait(ip)) {
2150 ip->i_flags |= XFS_ISTALE;
2152 if (xfs_inode_clean(ip)) {
2155 ip_found[found++] = ip;
2158 read_unlock(&ih->ih_lock);
2162 if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) {
2163 if (xfs_iflock_nowait(ip)) {
2164 ip->i_flags |= XFS_ISTALE;
2166 if (xfs_inode_clean(ip)) {
2168 xfs_iunlock(ip, XFS_ILOCK_EXCL);
2170 ip_found[found++] = ip;
2173 xfs_iunlock(ip, XFS_ILOCK_EXCL);
2177 read_unlock(&ih->ih_lock);
2180 bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, blkno,
2181 mp->m_bsize * blks_per_cluster,
2185 lip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *);
2187 if (lip->li_type == XFS_LI_INODE) {
2188 iip = (xfs_inode_log_item_t *)lip;
2189 ASSERT(iip->ili_logged == 1);
2190 lip->li_cb = (void(*)(xfs_buf_t*,xfs_log_item_t*)) xfs_istale_done;
2192 iip->ili_flush_lsn = iip->ili_item.li_lsn;
2194 iip->ili_inode->i_flags |= XFS_ISTALE;
2197 lip = lip->li_bio_list;
2200 for (i = 0; i < found; i++) {
2205 ip->i_update_core = 0;
2207 xfs_iunlock(ip, XFS_ILOCK_EXCL);
2211 iip->ili_last_fields = iip->ili_format.ilf_fields;
2212 iip->ili_format.ilf_fields = 0;
2213 iip->ili_logged = 1;
2215 iip->ili_flush_lsn = iip->ili_item.li_lsn;
2218 xfs_buf_attach_iodone(bp,
2219 (void(*)(xfs_buf_t*,xfs_log_item_t*))
2220 xfs_istale_done, (xfs_log_item_t *)iip);
2221 if (ip != free_ip) {
2222 xfs_iunlock(ip, XFS_ILOCK_EXCL);
2226 if (found || pre_flushed)
2227 xfs_trans_stale_inode_buf(tp, bp);
2228 xfs_trans_binval(tp, bp);
2231 kmem_free(ip_found, ninodes * sizeof(xfs_inode_t *));
2235 * This is called to return an inode to the inode free list.
2236 * The inode should already be truncated to 0 length and have
2237 * no pages associated with it. This routine also assumes that
2238 * the inode is already a part of the transaction.
2240 * The on-disk copy of the inode will have been added to the list
2241 * of unlinked inodes in the AGI. We need to remove the inode from
2242 * that list atomically with respect to freeing it here.
2248 xfs_bmap_free_t *flist)
2252 xfs_ino_t first_ino;
2254 ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
2255 ASSERT(ip->i_transp == tp);
2256 ASSERT(ip->i_d.di_nlink == 0);
2257 ASSERT(ip->i_d.di_nextents == 0);
2258 ASSERT(ip->i_d.di_anextents == 0);
2259 ASSERT((ip->i_d.di_size == 0) ||
2260 ((ip->i_d.di_mode & S_IFMT) != S_IFREG));
2261 ASSERT(ip->i_d.di_nblocks == 0);
2264 * Pull the on-disk inode from the AGI unlinked list.
2266 error = xfs_iunlink_remove(tp, ip);
2271 error = xfs_difree(tp, ip->i_ino, flist, &delete, &first_ino);
2275 ip->i_d.di_mode = 0; /* mark incore inode as free */
2276 ip->i_d.di_flags = 0;
2277 ip->i_d.di_dmevmask = 0;
2278 ip->i_d.di_forkoff = 0; /* mark the attr fork not in use */
2279 ip->i_df.if_ext_max =
2280 XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
2281 ip->i_d.di_format = XFS_DINODE_FMT_EXTENTS;
2282 ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
2284 * Bump the generation count so no one will be confused
2285 * by reincarnations of this inode.
2288 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
2291 xfs_ifree_cluster(ip, tp, first_ino);
2298 * Reallocate the space for if_broot based on the number of records
2299 * being added or deleted as indicated in rec_diff. Move the records
2300 * and pointers in if_broot to fit the new size. When shrinking this
2301 * will eliminate holes between the records and pointers created by
2302 * the caller. When growing this will create holes to be filled in
2305 * The caller must not request to add more records than would fit in
2306 * the on-disk inode root. If the if_broot is currently NULL, then
2307 * if we adding records one will be allocated. The caller must also
2308 * not request that the number of records go below zero, although
2309 * it can go to zero.
2311 * ip -- the inode whose if_broot area is changing
2312 * ext_diff -- the change in the number of records, positive or negative,
2313 * requested for the if_broot array.
2323 xfs_bmbt_block_t *new_broot;
2330 * Handle the degenerate case quietly.
2332 if (rec_diff == 0) {
2336 ifp = XFS_IFORK_PTR(ip, whichfork);
2339 * If there wasn't any memory allocated before, just
2340 * allocate it now and get out.
2342 if (ifp->if_broot_bytes == 0) {
2343 new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(rec_diff);
2344 ifp->if_broot = (xfs_bmbt_block_t*)kmem_alloc(new_size,
2346 ifp->if_broot_bytes = (int)new_size;
2351 * If there is already an existing if_broot, then we need
2352 * to realloc() it and shift the pointers to their new
2353 * location. The records don't change location because
2354 * they are kept butted up against the btree block header.
2356 cur_max = XFS_BMAP_BROOT_MAXRECS(ifp->if_broot_bytes);
2357 new_max = cur_max + rec_diff;
2358 new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(new_max);
2359 ifp->if_broot = (xfs_bmbt_block_t *)
2360 kmem_realloc(ifp->if_broot,
2362 (size_t)XFS_BMAP_BROOT_SPACE_CALC(cur_max), /* old size */
2364 op = (char *)XFS_BMAP_BROOT_PTR_ADDR(ifp->if_broot, 1,
2365 ifp->if_broot_bytes);
2366 np = (char *)XFS_BMAP_BROOT_PTR_ADDR(ifp->if_broot, 1,
2368 ifp->if_broot_bytes = (int)new_size;
2369 ASSERT(ifp->if_broot_bytes <=
2370 XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ);
2371 memmove(np, op, cur_max * (uint)sizeof(xfs_dfsbno_t));
2376 * rec_diff is less than 0. In this case, we are shrinking the
2377 * if_broot buffer. It must already exist. If we go to zero
2378 * records, just get rid of the root and clear the status bit.
2380 ASSERT((ifp->if_broot != NULL) && (ifp->if_broot_bytes > 0));
2381 cur_max = XFS_BMAP_BROOT_MAXRECS(ifp->if_broot_bytes);
2382 new_max = cur_max + rec_diff;
2383 ASSERT(new_max >= 0);
2385 new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(new_max);
2389 new_broot = (xfs_bmbt_block_t *)kmem_alloc(new_size, KM_SLEEP);
2391 * First copy over the btree block header.
2393 memcpy(new_broot, ifp->if_broot, sizeof(xfs_bmbt_block_t));
2396 ifp->if_flags &= ~XFS_IFBROOT;
2400 * Only copy the records and pointers if there are any.
2404 * First copy the records.
2406 op = (char *)XFS_BMAP_BROOT_REC_ADDR(ifp->if_broot, 1,
2407 ifp->if_broot_bytes);
2408 np = (char *)XFS_BMAP_BROOT_REC_ADDR(new_broot, 1,
2410 memcpy(np, op, new_max * (uint)sizeof(xfs_bmbt_rec_t));
2413 * Then copy the pointers.
2415 op = (char *)XFS_BMAP_BROOT_PTR_ADDR(ifp->if_broot, 1,
2416 ifp->if_broot_bytes);
2417 np = (char *)XFS_BMAP_BROOT_PTR_ADDR(new_broot, 1,
2419 memcpy(np, op, new_max * (uint)sizeof(xfs_dfsbno_t));
2421 kmem_free(ifp->if_broot, ifp->if_broot_bytes);
2422 ifp->if_broot = new_broot;
2423 ifp->if_broot_bytes = (int)new_size;
2424 ASSERT(ifp->if_broot_bytes <=
2425 XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ);
2431 * This is called when the amount of space needed for if_extents
2432 * is increased or decreased. The change in size is indicated by
2433 * the number of extents that need to be added or deleted in the
2434 * ext_diff parameter.
2436 * If the amount of space needed has decreased below the size of the
2437 * inline buffer, then switch to using the inline buffer. Otherwise,
2438 * use kmem_realloc() or kmem_alloc() to adjust the size of the buffer
2439 * to what is needed.
2441 * ip -- the inode whose if_extents area is changing
2442 * ext_diff -- the change in the number of extents, positive or negative,
2443 * requested for the if_extents array.
2456 if (ext_diff == 0) {
2460 ifp = XFS_IFORK_PTR(ip, whichfork);
2461 byte_diff = ext_diff * (uint)sizeof(xfs_bmbt_rec_t);
2462 new_size = (int)ifp->if_bytes + byte_diff;
2463 ASSERT(new_size >= 0);
2465 if (new_size == 0) {
2466 if (ifp->if_u1.if_extents != ifp->if_u2.if_inline_ext) {
2467 ASSERT(ifp->if_real_bytes != 0);
2468 kmem_free(ifp->if_u1.if_extents, ifp->if_real_bytes);
2470 ifp->if_u1.if_extents = NULL;
2472 } else if (new_size <= sizeof(ifp->if_u2.if_inline_ext)) {
2474 * If the valid extents can fit in if_inline_ext,
2475 * copy them from the malloc'd vector and free it.
2477 if (ifp->if_u1.if_extents != ifp->if_u2.if_inline_ext) {
2479 * For now, empty files are format EXTENTS,
2480 * so the if_extents pointer is null.
2482 if (ifp->if_u1.if_extents) {
2483 memcpy(ifp->if_u2.if_inline_ext,
2484 ifp->if_u1.if_extents, new_size);
2485 kmem_free(ifp->if_u1.if_extents,
2486 ifp->if_real_bytes);
2488 ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext;
2492 rnew_size = new_size;
2493 if ((rnew_size & (rnew_size - 1)) != 0)
2494 rnew_size = xfs_iroundup(rnew_size);
2496 * Stuck with malloc/realloc.
2498 if (ifp->if_u1.if_extents == ifp->if_u2.if_inline_ext) {
2499 ifp->if_u1.if_extents = (xfs_bmbt_rec_t *)
2500 kmem_alloc(rnew_size, KM_SLEEP);
2501 memcpy(ifp->if_u1.if_extents, ifp->if_u2.if_inline_ext,
2502 sizeof(ifp->if_u2.if_inline_ext));
2503 } else if (rnew_size != ifp->if_real_bytes) {
2504 ifp->if_u1.if_extents = (xfs_bmbt_rec_t *)
2505 kmem_realloc(ifp->if_u1.if_extents,
2511 ifp->if_real_bytes = rnew_size;
2512 ifp->if_bytes = new_size;
2517 * This is called when the amount of space needed for if_data
2518 * is increased or decreased. The change in size is indicated by
2519 * the number of bytes that need to be added or deleted in the
2520 * byte_diff parameter.
2522 * If the amount of space needed has decreased below the size of the
2523 * inline buffer, then switch to using the inline buffer. Otherwise,
2524 * use kmem_realloc() or kmem_alloc() to adjust the size of the buffer
2525 * to what is needed.
2527 * ip -- the inode whose if_data area is changing
2528 * byte_diff -- the change in the number of bytes, positive or negative,
2529 * requested for the if_data array.
2541 if (byte_diff == 0) {
2545 ifp = XFS_IFORK_PTR(ip, whichfork);
2546 new_size = (int)ifp->if_bytes + byte_diff;
2547 ASSERT(new_size >= 0);
2549 if (new_size == 0) {
2550 if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) {
2551 kmem_free(ifp->if_u1.if_data, ifp->if_real_bytes);
2553 ifp->if_u1.if_data = NULL;
2555 } else if (new_size <= sizeof(ifp->if_u2.if_inline_data)) {
2557 * If the valid extents/data can fit in if_inline_ext/data,
2558 * copy them from the malloc'd vector and free it.
2560 if (ifp->if_u1.if_data == NULL) {
2561 ifp->if_u1.if_data = ifp->if_u2.if_inline_data;
2562 } else if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) {
2563 ASSERT(ifp->if_real_bytes != 0);
2564 memcpy(ifp->if_u2.if_inline_data, ifp->if_u1.if_data,
2566 kmem_free(ifp->if_u1.if_data, ifp->if_real_bytes);
2567 ifp->if_u1.if_data = ifp->if_u2.if_inline_data;
2572 * Stuck with malloc/realloc.
2573 * For inline data, the underlying buffer must be
2574 * a multiple of 4 bytes in size so that it can be
2575 * logged and stay on word boundaries. We enforce
2578 real_size = roundup(new_size, 4);
2579 if (ifp->if_u1.if_data == NULL) {
2580 ASSERT(ifp->if_real_bytes == 0);
2581 ifp->if_u1.if_data = kmem_alloc(real_size, KM_SLEEP);
2582 } else if (ifp->if_u1.if_data != ifp->if_u2.if_inline_data) {
2584 * Only do the realloc if the underlying size
2585 * is really changing.
2587 if (ifp->if_real_bytes != real_size) {
2588 ifp->if_u1.if_data =
2589 kmem_realloc(ifp->if_u1.if_data,
2595 ASSERT(ifp->if_real_bytes == 0);
2596 ifp->if_u1.if_data = kmem_alloc(real_size, KM_SLEEP);
2597 memcpy(ifp->if_u1.if_data, ifp->if_u2.if_inline_data,
2601 ifp->if_real_bytes = real_size;
2602 ifp->if_bytes = new_size;
2603 ASSERT(ifp->if_bytes <= XFS_IFORK_SIZE(ip, whichfork));
2610 * Map inode to disk block and offset.
2612 * mp -- the mount point structure for the current file system
2613 * tp -- the current transaction
2614 * ino -- the inode number of the inode to be located
2615 * imap -- this structure is filled in with the information necessary
2616 * to retrieve the given inode from disk
2617 * flags -- flags to pass to xfs_dilocate indicating whether or not
2618 * lookups in the inode btree were OK or not
2628 xfs_fsblock_t fsbno;
2633 fsbno = imap->im_blkno ?
2634 XFS_DADDR_TO_FSB(mp, imap->im_blkno) : NULLFSBLOCK;
2635 error = xfs_dilocate(mp, tp, ino, &fsbno, &len, &off, flags);
2639 imap->im_blkno = XFS_FSB_TO_DADDR(mp, fsbno);
2640 imap->im_len = XFS_FSB_TO_BB(mp, len);
2641 imap->im_agblkno = XFS_FSB_TO_AGBNO(mp, fsbno);
2642 imap->im_ioffset = (ushort)off;
2643 imap->im_boffset = (ushort)(off << mp->m_sb.sb_inodelog);
2654 ifp = XFS_IFORK_PTR(ip, whichfork);
2655 if (ifp->if_broot != NULL) {
2656 kmem_free(ifp->if_broot, ifp->if_broot_bytes);
2657 ifp->if_broot = NULL;
2661 * If the format is local, then we can't have an extents
2662 * array so just look for an inline data array. If we're
2663 * not local then we may or may not have an extents list,
2664 * so check and free it up if we do.
2666 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) {
2667 if ((ifp->if_u1.if_data != ifp->if_u2.if_inline_data) &&
2668 (ifp->if_u1.if_data != NULL)) {
2669 ASSERT(ifp->if_real_bytes != 0);
2670 kmem_free(ifp->if_u1.if_data, ifp->if_real_bytes);
2671 ifp->if_u1.if_data = NULL;
2672 ifp->if_real_bytes = 0;
2674 } else if ((ifp->if_flags & XFS_IFEXTENTS) &&
2675 (ifp->if_u1.if_extents != NULL) &&
2676 (ifp->if_u1.if_extents != ifp->if_u2.if_inline_ext)) {
2677 ASSERT(ifp->if_real_bytes != 0);
2678 kmem_free(ifp->if_u1.if_extents, ifp->if_real_bytes);
2679 ifp->if_u1.if_extents = NULL;
2680 ifp->if_real_bytes = 0;
2682 ASSERT(ifp->if_u1.if_extents == NULL ||
2683 ifp->if_u1.if_extents == ifp->if_u2.if_inline_ext);
2684 ASSERT(ifp->if_real_bytes == 0);
2685 if (whichfork == XFS_ATTR_FORK) {
2686 kmem_zone_free(xfs_ifork_zone, ip->i_afp);
2692 * This is called free all the memory associated with an inode.
2693 * It must free the inode itself and any buffers allocated for
2694 * if_extents/if_data and if_broot. It must also free the lock
2695 * associated with the inode.
2702 switch (ip->i_d.di_mode & S_IFMT) {
2706 xfs_idestroy_fork(ip, XFS_DATA_FORK);
2710 xfs_idestroy_fork(ip, XFS_ATTR_FORK);
2711 mrfree(&ip->i_lock);
2712 mrfree(&ip->i_iolock);
2713 freesema(&ip->i_flock);
2714 #ifdef XFS_BMAP_TRACE
2715 ktrace_free(ip->i_xtrace);
2717 #ifdef XFS_BMBT_TRACE
2718 ktrace_free(ip->i_btrace);
2721 ktrace_free(ip->i_rwtrace);
2723 #ifdef XFS_ILOCK_TRACE
2724 ktrace_free(ip->i_lock_trace);
2726 #ifdef XFS_DIR2_TRACE
2727 ktrace_free(ip->i_dir_trace);
2730 /* XXXdpd should be able to assert this but shutdown
2731 * is leaving the AIL behind. */
2732 ASSERT(((ip->i_itemp->ili_item.li_flags & XFS_LI_IN_AIL) == 0) ||
2733 XFS_FORCED_SHUTDOWN(ip->i_mount));
2734 xfs_inode_item_destroy(ip);
2736 kmem_zone_free(xfs_inode_zone, ip);
2741 * Increment the pin count of the given buffer.
2742 * This value is protected by ipinlock spinlock in the mount structure.
2748 ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
2750 atomic_inc(&ip->i_pincount);
2754 * Decrement the pin count of the given inode, and wake up
2755 * anyone in xfs_iwait_unpin() if the count goes to 0. The
2756 * inode must have been previoulsy pinned with a call to xfs_ipin().
2762 ASSERT(atomic_read(&ip->i_pincount) > 0);
2764 if (atomic_dec_and_test(&ip->i_pincount)) {
2767 * Should I mark FreeBSD vnode as dirty here?
2769 printf("%s:%d: Should I mark FreeBSD vnode as dirty here?\n",
2770 __FILE__, __LINE__);
2771 xfs_vnode_t *vp = XFS_ITOV_NULL(ip);
2773 /* make sync come back and flush this inode */
2775 struct inode *inode = LINVFS_GET_IP(vp);
2777 if (!(inode->i_state & I_NEW))
2778 mark_inode_dirty_sync(inode);
2782 wakeup(&ip->i_ipin_wait);
2787 * This is called to wait for the given inode to be unpinned.
2788 * It will sleep until this happens. The caller must have the
2789 * inode locked in at least shared mode so that the buffer cannot
2790 * be subsequently pinned once someone is waiting for it to be
2797 xfs_inode_log_item_t *iip;
2800 ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE | MR_ACCESS));
2802 if (atomic_read(&ip->i_pincount) == 0) {
2807 if (iip && iip->ili_last_lsn) {
2808 lsn = iip->ili_last_lsn;
2814 * Give the log a push so we don't wait here too long.
2816 xfs_log_force(ip->i_mount, lsn, XFS_LOG_FORCE);
2819 * XXXKAN: xfs_iunpin is not locking inode
2822 while(atomic_read(&ip->i_pincount) != 0)
2823 tsleep(&ip->i_ipin_wait, PRIBIO, "iunpin", 0);
2828 * xfs_iextents_copy()
2830 * This is called to copy the REAL extents (as opposed to the delayed
2831 * allocation extents) from the inode into the given buffer. It
2832 * returns the number of bytes copied into the buffer.
2834 * If there are no delayed allocation extents, then we can just
2835 * memcpy() the extents into the buffer. Otherwise, we need to
2836 * examine each extent in turn and skip those which are delayed.
2841 xfs_bmbt_rec_t *buffer,
2845 xfs_bmbt_rec_t *dest_ep;
2847 #ifdef XFS_BMAP_TRACE
2848 static char fname[] = "xfs_iextents_copy";
2853 xfs_fsblock_t start_block;
2855 ifp = XFS_IFORK_PTR(ip, whichfork);
2856 ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE|MR_ACCESS));
2857 ASSERT(ifp->if_bytes > 0);
2859 nrecs = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
2860 xfs_bmap_trace_exlist(fname, ip, nrecs, whichfork);
2864 * There are some delayed allocation extents in the
2865 * inode, so copy the extents one at a time and skip
2866 * the delayed ones. There must be at least one
2867 * non-delayed extent.
2869 ep = ifp->if_u1.if_extents;
2872 for (i = 0; i < nrecs; i++) {
2873 start_block = xfs_bmbt_get_startblock(ep);
2874 if (ISNULLSTARTBLOCK(start_block)) {
2876 * It's a delayed allocation extent, so skip it.
2882 /* Translate to on disk format */
2883 put_unaligned(INT_GET(ep->l0, ARCH_CONVERT),
2884 (__uint64_t*)&dest_ep->l0);
2885 put_unaligned(INT_GET(ep->l1, ARCH_CONVERT),
2886 (__uint64_t*)&dest_ep->l1);
2891 ASSERT(copied != 0);
2892 xfs_validate_extents(buffer, copied, 1, XFS_EXTFMT_INODE(ip));
2894 return (copied * (uint)sizeof(xfs_bmbt_rec_t));
2898 * Each of the following cases stores data into the same region
2899 * of the on-disk inode, so only one of them can be valid at
2900 * any given time. While it is possible to have conflicting formats
2901 * and log flags, e.g. having XFS_ILOG_?DATA set when the fork is
2902 * in EXTENTS format, this can only happen when the fork has
2903 * changed formats after being modified but before being flushed.
2904 * In these cases, the format always takes precedence, because the
2905 * format indicates the current state of the fork.
2912 xfs_inode_log_item_t *iip,
2919 #ifdef XFS_TRANS_DEBUG
2922 static const short brootflag[2] =
2923 { XFS_ILOG_DBROOT, XFS_ILOG_ABROOT };
2924 static const short dataflag[2] =
2925 { XFS_ILOG_DDATA, XFS_ILOG_ADATA };
2926 static const short extflag[2] =
2927 { XFS_ILOG_DEXT, XFS_ILOG_AEXT };
2931 ifp = XFS_IFORK_PTR(ip, whichfork);
2933 * This can happen if we gave up in iformat in an error path,
2934 * for the attribute fork.
2937 ASSERT(whichfork == XFS_ATTR_FORK);
2940 cp = XFS_DFORK_PTR_ARCH(dip, whichfork, ARCH_CONVERT);
2942 switch (XFS_IFORK_FORMAT(ip, whichfork)) {
2943 case XFS_DINODE_FMT_LOCAL:
2944 if ((iip->ili_format.ilf_fields & dataflag[whichfork]) &&
2945 (ifp->if_bytes > 0)) {
2946 ASSERT(ifp->if_u1.if_data != NULL);
2947 ASSERT(ifp->if_bytes <= XFS_IFORK_SIZE(ip, whichfork));
2948 memcpy(cp, ifp->if_u1.if_data, ifp->if_bytes);
2950 if (whichfork == XFS_DATA_FORK) {
2951 if (unlikely(XFS_DIR_SHORTFORM_VALIDATE_ONDISK(mp, dip))) {
2952 XFS_ERROR_REPORT("xfs_iflush_fork",
2953 XFS_ERRLEVEL_LOW, mp);
2954 return XFS_ERROR(EFSCORRUPTED);
2959 case XFS_DINODE_FMT_EXTENTS:
2960 ASSERT((ifp->if_flags & XFS_IFEXTENTS) ||
2961 !(iip->ili_format.ilf_fields & extflag[whichfork]));
2962 ASSERT((ifp->if_u1.if_extents != NULL) || (ifp->if_bytes == 0));
2963 ASSERT((ifp->if_u1.if_extents == NULL) || (ifp->if_bytes > 0));
2964 if ((iip->ili_format.ilf_fields & extflag[whichfork]) &&
2965 (ifp->if_bytes > 0)) {
2966 ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) > 0);
2967 (void)xfs_iextents_copy(ip, (xfs_bmbt_rec_t *)cp,
2972 case XFS_DINODE_FMT_BTREE:
2973 if ((iip->ili_format.ilf_fields & brootflag[whichfork]) &&
2974 (ifp->if_broot_bytes > 0)) {
2975 ASSERT(ifp->if_broot != NULL);
2976 ASSERT(ifp->if_broot_bytes <=
2977 (XFS_IFORK_SIZE(ip, whichfork) +
2978 XFS_BROOT_SIZE_ADJ));
2979 xfs_bmbt_to_bmdr(ifp->if_broot, ifp->if_broot_bytes,
2980 (xfs_bmdr_block_t *)cp,
2981 XFS_DFORK_SIZE_ARCH(dip, mp, whichfork, ARCH_CONVERT));
2985 case XFS_DINODE_FMT_DEV:
2986 if (iip->ili_format.ilf_fields & XFS_ILOG_DEV) {
2987 ASSERT(whichfork == XFS_DATA_FORK);
2988 INT_SET(dip->di_u.di_dev, ARCH_CONVERT, ip->i_df.if_u2.if_rdev);
2992 case XFS_DINODE_FMT_UUID:
2993 if (iip->ili_format.ilf_fields & XFS_ILOG_UUID) {
2994 ASSERT(whichfork == XFS_DATA_FORK);
2995 memcpy(&dip->di_u.di_muuid, &ip->i_df.if_u2.if_uuid,
3009 * xfs_iflush() will write a modified inode's changes out to the
3010 * inode's on disk home. The caller must have the inode lock held
3011 * in at least shared mode and the inode flush semaphore must be
3012 * held as well. The inode lock will still be held upon return from
3013 * the call and the caller is free to unlock it.
3014 * The inode flush lock will be unlocked when the inode reaches the disk.
3015 * The flags indicate how the inode's buffer should be written out.
3022 xfs_inode_log_item_t *iip;
3030 int clcount; /* count of inodes clustered */
3032 enum { INT_DELWRI = (1 << 0), INT_ASYNC = (1 << 1) };
3035 XFS_STATS_INC(xs_iflush_count);
3037 ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE|MR_ACCESS));
3038 ASSERT(valusema(&ip->i_flock) <= 0);
3039 ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE ||
3040 ip->i_d.di_nextents > ip->i_df.if_ext_max);
3046 * If the inode isn't dirty, then just release the inode
3047 * flush lock and do nothing.
3049 if ((ip->i_update_core == 0) &&
3050 ((iip == NULL) || !(iip->ili_format.ilf_fields & XFS_ILOG_ALL))) {
3051 ASSERT((iip != NULL) ?
3052 !(iip->ili_item.li_flags & XFS_LI_IN_AIL) : 1);
3058 * We can't flush the inode until it is unpinned, so
3059 * wait for it. We know noone new can pin it, because
3060 * we are holding the inode lock shared and you need
3061 * to hold it exclusively to pin the inode.
3063 xfs_iunpin_wait(ip);
3066 * This may have been unpinned because the filesystem is shutting
3067 * down forcibly. If that's the case we must not write this inode
3068 * to disk, because the log record didn't make it to disk!
3070 if (XFS_FORCED_SHUTDOWN(mp)) {
3071 ip->i_update_core = 0;
3073 iip->ili_format.ilf_fields = 0;
3075 return XFS_ERROR(EIO);
3079 * Get the buffer containing the on-disk inode.
3081 error = xfs_itobp(mp, NULL, ip, &dip, &bp, 0);
3088 * Decide how buffer will be flushed out. This is done before
3089 * the call to xfs_iflush_int because this field is zeroed by it.
3091 if (iip != NULL && iip->ili_format.ilf_fields != 0) {
3093 * Flush out the inode buffer according to the directions
3094 * of the caller. In the cases where the caller has given
3095 * us a choice choose the non-delwri case. This is because
3096 * the inode is in the AIL and we need to get it out soon.
3099 case XFS_IFLUSH_SYNC:
3100 case XFS_IFLUSH_DELWRI_ELSE_SYNC:
3103 case XFS_IFLUSH_ASYNC:
3104 case XFS_IFLUSH_DELWRI_ELSE_ASYNC:
3107 case XFS_IFLUSH_DELWRI:
3117 case XFS_IFLUSH_DELWRI_ELSE_SYNC:
3118 case XFS_IFLUSH_DELWRI_ELSE_ASYNC:
3119 case XFS_IFLUSH_DELWRI:
3122 case XFS_IFLUSH_ASYNC:
3125 case XFS_IFLUSH_SYNC:
3136 * First flush out the inode that xfs_iflush was called with.
3138 error = xfs_iflush_int(ip, bp);
3145 * see if other inodes can be gathered into this write
3148 ip->i_chash->chl_buf = bp;
3150 ch = XFS_CHASH(mp, ip->i_blkno);
3151 s = mutex_spinlock(&ch->ch_lock);
3154 for (iq = ip->i_cnext; iq != ip; iq = iq->i_cnext) {
3156 * Do an un-protected check to see if the inode is dirty and
3157 * is a candidate for flushing. These checks will be repeated
3158 * later after the appropriate locks are acquired.
3161 if ((iq->i_update_core == 0) &&
3163 !(iip->ili_format.ilf_fields & XFS_ILOG_ALL)) &&
3164 xfs_ipincount(iq) == 0) {
3169 * Try to get locks. If any are unavailable,
3170 * then this inode cannot be flushed and is skipped.
3173 /* get inode locks (just i_lock) */
3174 if (xfs_ilock_nowait(iq, XFS_ILOCK_SHARED)) {
3175 /* get inode flush lock */
3176 if (xfs_iflock_nowait(iq)) {
3177 /* check if pinned */
3178 if (xfs_ipincount(iq) == 0) {
3179 /* arriving here means that
3180 * this inode can be flushed.
3181 * first re-check that it's
3185 if ((iq->i_update_core != 0)||
3187 (iip->ili_format.ilf_fields & XFS_ILOG_ALL))) {
3189 error = xfs_iflush_int(iq, bp);
3193 goto cluster_corrupt_out;
3202 xfs_iunlock(iq, XFS_ILOCK_SHARED);
3205 mutex_spinunlock(&ch->ch_lock, s);
3208 XFS_STATS_INC(xs_icluster_flushcnt);
3209 XFS_STATS_ADD(xs_icluster_flushinode, clcount);
3213 * If the buffer is pinned then push on the log so we won't
3214 * get stuck waiting in the write for too long.
3216 if (XFS_BUF_ISPINNED(bp)){
3217 xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
3220 if (flags & INT_DELWRI) {
3221 xfs_bdwrite(mp, bp);
3222 } else if (flags & INT_ASYNC) {
3223 xfs_bawrite(mp, bp);
3225 error = xfs_bwrite(mp, bp);
3231 xfs_force_shutdown(mp, XFS_CORRUPT_INCORE);
3232 xfs_iflush_abort(ip);
3234 * Unlocks the flush lock
3236 return XFS_ERROR(EFSCORRUPTED);
3238 cluster_corrupt_out:
3239 /* Corruption detected in the clustering loop. Invalidate the
3240 * inode buffer and shut down the filesystem.
3242 mutex_spinunlock(&ch->ch_lock, s);
3245 * Clean up the buffer. If it was B_DELWRI, just release it --
3246 * brelse can handle it with no problems. If not, shut down the
3247 * filesystem before releasing the buffer.
3249 if ((bufwasdelwri= XFS_BUF_ISDELAYWRITE(bp))) {
3253 xfs_force_shutdown(mp, XFS_CORRUPT_INCORE);
3257 * Just like incore_relse: if we have b_iodone functions,
3258 * mark the buffer as an error and call them. Otherwise
3259 * mark it as stale and brelse.
3261 if (XFS_BUF_IODONE_FUNC(bp)) {
3262 XFS_BUF_CLR_BDSTRAT_FUNC(bp);
3266 XFS_BUF_ERROR(bp,EIO);
3274 xfs_iflush_abort(iq);
3276 * Unlocks the flush lock
3278 return XFS_ERROR(EFSCORRUPTED);
3287 xfs_inode_log_item_t *iip;
3290 #ifdef XFS_TRANS_DEBUG
3295 ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE|MR_ACCESS));
3296 ASSERT(valusema(&ip->i_flock) <= 0);
3297 ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE ||
3298 ip->i_d.di_nextents > ip->i_df.if_ext_max);
3305 * If the inode isn't dirty, then just release the inode
3306 * flush lock and do nothing.
3308 if ((ip->i_update_core == 0) &&
3309 ((iip == NULL) || !(iip->ili_format.ilf_fields & XFS_ILOG_ALL))) {
3314 /* set *dip = inode's place in the buffer */
3315 dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_boffset);
3318 * Clear i_update_core before copying out the data.
3319 * This is for coordination with our timestamp updates
3320 * that don't hold the inode lock. They will always
3321 * update the timestamps BEFORE setting i_update_core,
3322 * so if we clear i_update_core after they set it we
3323 * are guaranteed to see their updates to the timestamps.
3324 * I believe that this depends on strongly ordered memory
3325 * semantics, but we have that. We use the SYNCHRONIZE
3326 * macro to make sure that the compiler does not reorder
3327 * the i_update_core access below the data copy below.
3329 ip->i_update_core = 0;
3332 if (XFS_TEST_ERROR(INT_GET(dip->di_core.di_magic,ARCH_CONVERT) != XFS_DINODE_MAGIC,
3333 mp, XFS_ERRTAG_IFLUSH_1, XFS_RANDOM_IFLUSH_1)) {
3334 xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
3335 "xfs_iflush: Bad inode %Lu magic number 0x%x, ptr 0x%p",
3336 ip->i_ino, (int) INT_GET(dip->di_core.di_magic, ARCH_CONVERT), dip);
3339 if (XFS_TEST_ERROR(ip->i_d.di_magic != XFS_DINODE_MAGIC,
3340 mp, XFS_ERRTAG_IFLUSH_2, XFS_RANDOM_IFLUSH_2)) {
3341 xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
3342 "xfs_iflush: Bad inode %Lu, ptr 0x%p, magic number 0x%x",
3343 ip->i_ino, ip, ip->i_d.di_magic);
3346 if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) {
3348 (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) &&
3349 (ip->i_d.di_format != XFS_DINODE_FMT_BTREE),
3350 mp, XFS_ERRTAG_IFLUSH_3, XFS_RANDOM_IFLUSH_3)) {
3351 xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
3352 "xfs_iflush: Bad regular inode %Lu, ptr 0x%p",
3356 } else if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) {
3358 (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) &&
3359 (ip->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
3360 (ip->i_d.di_format != XFS_DINODE_FMT_LOCAL),
3361 mp, XFS_ERRTAG_IFLUSH_4, XFS_RANDOM_IFLUSH_4)) {
3362 xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
3363 "xfs_iflush: Bad directory inode %Lu, ptr 0x%p",
3368 if (XFS_TEST_ERROR(ip->i_d.di_nextents + ip->i_d.di_anextents >
3369 ip->i_d.di_nblocks, mp, XFS_ERRTAG_IFLUSH_5,
3370 XFS_RANDOM_IFLUSH_5)) {
3371 xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
3372 "xfs_iflush: detected corrupt incore inode %Lu, total extents = %d, nblocks = %Ld, ptr 0x%p",
3374 ip->i_d.di_nextents + ip->i_d.di_anextents,
3379 if (XFS_TEST_ERROR(ip->i_d.di_forkoff > mp->m_sb.sb_inodesize,
3380 mp, XFS_ERRTAG_IFLUSH_6, XFS_RANDOM_IFLUSH_6)) {
3381 xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp,
3382 "xfs_iflush: bad inode %Lu, forkoff 0x%x, ptr 0x%p",
3383 ip->i_ino, ip->i_d.di_forkoff, ip);
3387 * bump the flush iteration count, used to detect flushes which
3388 * postdate a log record during recovery.
3391 ip->i_d.di_flushiter++;
3394 * Copy the dirty parts of the inode into the on-disk
3395 * inode. We always copy out the core of the inode,
3396 * because if the inode is dirty at all the core must
3399 xfs_xlate_dinode_core((xfs_caddr_t)&(dip->di_core), &(ip->i_d),
3402 /* Wrap, we never let the log put out DI_MAX_FLUSH */
3403 if (ip->i_d.di_flushiter == DI_MAX_FLUSH)
3404 ip->i_d.di_flushiter = 0;
3407 * If this is really an old format inode and the superblock version
3408 * has not been updated to support only new format inodes, then
3409 * convert back to the old inode format. If the superblock version
3410 * has been updated, then make the conversion permanent.
3412 ASSERT(ip->i_d.di_version == XFS_DINODE_VERSION_1 ||
3413 XFS_SB_VERSION_HASNLINK(&mp->m_sb));
3414 if (ip->i_d.di_version == XFS_DINODE_VERSION_1) {
3415 if (!XFS_SB_VERSION_HASNLINK(&mp->m_sb)) {
3419 ASSERT(ip->i_d.di_nlink <= XFS_MAXLINK_1);
3420 INT_SET(dip->di_core.di_onlink, ARCH_CONVERT, ip->i_d.di_nlink);
3423 * The superblock version has already been bumped,
3424 * so just make the conversion to the new inode
3427 ip->i_d.di_version = XFS_DINODE_VERSION_2;
3428 INT_SET(dip->di_core.di_version, ARCH_CONVERT, XFS_DINODE_VERSION_2);
3429 ip->i_d.di_onlink = 0;
3430 INT_ZERO(dip->di_core.di_onlink, ARCH_CONVERT);
3431 memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad));
3432 memset(&(dip->di_core.di_pad[0]), 0,
3433 sizeof(dip->di_core.di_pad));
3434 ASSERT(ip->i_d.di_projid == 0);
3438 if (xfs_iflush_fork(ip, dip, iip, XFS_DATA_FORK, bp) == EFSCORRUPTED) {
3442 if (XFS_IFORK_Q(ip)) {
3444 * The only error from xfs_iflush_fork is on the data fork.
3446 (void) xfs_iflush_fork(ip, dip, iip, XFS_ATTR_FORK, bp);
3448 xfs_inobp_check(mp, bp);
3451 * We've recorded everything logged in the inode, so we'd
3452 * like to clear the ilf_fields bits so we don't log and
3453 * flush things unnecessarily. However, we can't stop
3454 * logging all this information until the data we've copied
3455 * into the disk buffer is written to disk. If we did we might
3456 * overwrite the copy of the inode in the log with all the
3457 * data after re-logging only part of it, and in the face of
3458 * a crash we wouldn't have all the data we need to recover.
3460 * What we do is move the bits to the ili_last_fields field.
3461 * When logging the inode, these bits are moved back to the
3462 * ilf_fields field. In the xfs_iflush_done() routine we
3463 * clear ili_last_fields, since we know that the information
3464 * those bits represent is permanently on disk. As long as
3465 * the flush completes before the inode is logged again, then
3466 * both ilf_fields and ili_last_fields will be cleared.
3468 * We can play with the ilf_fields bits here, because the inode
3469 * lock must be held exclusively in order to set bits there
3470 * and the flush lock protects the ili_last_fields bits.
3471 * Set ili_logged so the flush done
3472 * routine can tell whether or not to look in the AIL.
3473 * Also, store the current LSN of the inode so that we can tell
3474 * whether the item has moved in the AIL from xfs_iflush_done().
3475 * In order to read the lsn we need the AIL lock, because
3476 * it is a 64 bit value that cannot be read atomically.
3478 if (iip != NULL && iip->ili_format.ilf_fields != 0) {
3479 iip->ili_last_fields = iip->ili_format.ilf_fields;
3480 iip->ili_format.ilf_fields = 0;
3481 iip->ili_logged = 1;
3483 ASSERT(sizeof(xfs_lsn_t) == 8); /* don't lock if it shrinks */
3485 iip->ili_flush_lsn = iip->ili_item.li_lsn;
3489 * Attach the function xfs_iflush_done to the inode's
3490 * buffer. This will remove the inode from the AIL
3491 * and unlock the inode's flush lock when the inode is
3492 * completely written to disk.
3494 xfs_buf_attach_iodone(bp, (void(*)(xfs_buf_t*,xfs_log_item_t*))
3495 xfs_iflush_done, (xfs_log_item_t *)iip);
3497 ASSERT(XFS_BUF_FSPRIVATE(bp, void *) != NULL);
3498 ASSERT(XFS_BUF_IODONE_FUNC(bp) != NULL);
3501 * We're flushing an inode which is not in the AIL and has
3502 * not been logged but has i_update_core set. For this
3503 * case we can use a B_DELWRI flush and immediately drop
3504 * the inode flush lock because we can avoid the whole
3505 * AIL state thing. It's OK to drop the flush lock now,
3506 * because we've already locked the buffer and to do anything
3507 * you really need both.
3510 ASSERT(iip->ili_logged == 0);
3511 ASSERT(iip->ili_last_fields == 0);
3512 ASSERT((iip->ili_item.li_flags & XFS_LI_IN_AIL) == 0);
3520 return XFS_ERROR(EFSCORRUPTED);
3524 * Flush all inactive inodes in mp. Return true if no user references
3525 * were found, false otherwise.
3542 XFS_MOUNT_ILOCK(mp);
3548 /* Make sure we skip markers inserted by sync */
3549 if (ip->i_mount == NULL) {
3555 * It's up to our caller to purge the root
3556 * and quota vnodes later.
3558 vp = XFS_ITOV_NULL(ip);
3561 XFS_MOUNT_IUNLOCK(mp);
3562 xfs_finish_reclaim(ip, 0, XFS_IFLUSH_ASYNC);
3567 if (vn_count(vp) != 0) {
3568 if (vn_count(vp) == 1 &&
3569 (ip == mp->m_rootip ||
3571 (ip->i_ino == mp->m_sb.sb_uquotino ||
3572 ip->i_ino == mp->m_sb.sb_gquotino)))) {
3577 if (!(flag & XFS_FLUSH_ALL)) {
3583 * Ignore busy inodes but continue flushing
3590 * Sample vp mapping while holding mp locked on MP
3591 * systems, so we don't purge a reclaimed or
3592 * nonexistent vnode. We break from the loop
3593 * since we know that we modify
3594 * it by pulling ourselves from it in xfs_reclaim()
3595 * called via vn_purge() below. Set ip to the next
3596 * entry in the list anyway so we'll know below
3597 * whether we reached the end or not.
3600 XFS_MOUNT_IUNLOCK(mp);
3602 vn_purge(vp, &vmap);
3606 } while (ip != mp->m_inodes);
3608 * We need to distinguish between when we exit the loop
3609 * after a purge and when we simply hit the end of the
3610 * list. We can't use the (ip == mp->m_inodes) test,
3611 * because when we purge an inode at the start of the list
3612 * the next inode on the list becomes mp->m_inodes. That
3613 * would cause such a test to bail out early. The purged
3614 * variable tells us how we got out of the loop.
3620 XFS_MOUNT_IUNLOCK(mp);
3626 * xfs_iaccess: check accessibility of inode for mode.
3639 imode = (ip->i_d.di_mode & MODEMASK) | VTTOIF(vp->v_type);
3641 if (mode & S_IWUSR) {
3642 xfs_mount_t *mp = ip->i_mount;
3644 if ((XVFSTOMNT(XFS_MTOVFS(mp))->mnt_flag & MNT_RDONLY) &&
3645 (S_ISREG(imode) || S_ISDIR(imode) || S_ISLNK(imode)))
3646 return XFS_ERROR(EROFS);
3649 if (IS_IMMUTABLE(inode))
3650 return XFS_ERROR(EACCES);
3655 * If there's an Access Control List it's used instead of
3658 if ((error = _ACL_XFS_IACCESS(ip, mode, cr)) != -1)
3659 return error ? XFS_ERROR(error) : 0;
3662 error = vaccess(vp->v_type, imode, ip->i_d.di_uid, ip->i_d.di_gid,
3669 * xfs_iroundup: round up argument to next power of two
3678 if ((v & (v - 1)) == 0)
3680 ASSERT((v & 0x80000000) == 0);
3681 if ((v & (v + 1)) == 0)
3683 for (i = 0, m = 1; i < 31; i++, m <<= 1) {
3687 if ((v & (v + 1)) == 0)
3695 * Change the requested timestamp in the given inode.
3696 * We don't lock across timestamp updates, and we don't log them but
3697 * we do record the fact that there is dirty information in core.
3699 * NOTE -- callers MUST combine XFS_ICHGTIME_MOD or XFS_ICHGTIME_CHG
3700 * with XFS_ICHGTIME_ACC to be sure that access time
3701 * update will take. Calling first with XFS_ICHGTIME_ACC
3702 * and then XFS_ICHGTIME_MOD may fail to modify the access
3703 * timestamp if the filesystem is mounted noacctm.
3706 xfs_ichgtime(xfs_inode_t *ip,
3710 xfs_vnode_t *vp = XFS_ITOV(ip);
3712 * We're not supposed to change timestamps in readonly-mounted
3713 * filesystems. Throw it away if anyone asks us.
3715 if (unlikely(vp->v_vfsp->vfs_flag & VFS_RDONLY))
3719 * Don't update access timestamps on reads if mounted "noatime"
3720 * Throw it away if anyone asks us.
3722 if ((ip->i_mount->m_flags & XFS_MOUNT_NOATIME ||
3723 (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)) &&
3724 ((flags & (XFS_ICHGTIME_ACC|XFS_ICHGTIME_MOD|XFS_ICHGTIME_CHG))
3725 == XFS_ICHGTIME_ACC))
3729 if (flags & XFS_ICHGTIME_MOD) {
3730 VN_MTIMESET(vp, &tv);
3731 ip->i_d.di_mtime.t_sec = (__int32_t)tv.tv_sec;
3733 if (flags & XFS_ICHGTIME_ACC) {
3734 VN_ATIMESET(vp, &tv);
3735 ip->i_d.di_atime.t_sec = (__int32_t)tv.tv_sec;
3737 if (flags & XFS_ICHGTIME_CHG) {
3738 VN_CTIMESET(vp, &tv);
3739 ip->i_d.di_ctime.t_sec = (__int32_t)tv.tv_sec;
3743 * We update the i_update_core field _after_ changing
3744 * the timestamps in order to coordinate properly with
3745 * xfs_iflush() so that we don't lose timestamp updates.
3746 * This keeps us from having to hold the inode lock
3747 * while doing this. We use the SYNCHRONIZE macro to
3748 * ensure that the compiler does not reorder the update
3749 * of i_update_core above the timestamp updates above.
3752 ip->i_update_core = 1;
3754 if (!(inode->i_state & I_LOCK))
3755 mark_inode_dirty_sync(inode);
3757 printf("xfs_ichgtime mark vnode dirty\n");
3761 #ifdef XFS_ILOCK_TRACE
3762 ktrace_t *xfs_ilock_trace_buf;
3765 xfs_ilock_trace(xfs_inode_t *ip, int lock, unsigned int lockflags, inst_t *ra)
3767 ktrace_enter(ip->i_lock_trace,
3769 (void *)(unsigned long)lock, /* 1 = LOCK, 3=UNLOCK, etc */
3770 (void *)(unsigned long)lockflags, /* XFS_ILOCK_EXCL etc */
3771 (void *)ra, /* caller of ilock */
3772 (void *)(unsigned long)current_cpu(),
3773 (void *)(unsigned long)current_pid(),
3774 0,0,0,0,0,0,0,0,0,0);