4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2012, 2018 by Delphix. All rights reserved.
25 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
26 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
27 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
28 * Copyright (c) 2015, STRATO AG, Inc. All rights reserved.
29 * Copyright (c) 2016 Actifio, Inc. All rights reserved.
30 * Copyright 2017 Nexenta Systems, Inc.
31 * Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
32 * Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
33 * Copyright (c) 2019, Klara Inc.
34 * Copyright (c) 2019, Allan Jude
37 /* Portions Copyright 2010 Robert Milkowski */
40 #include <sys/zfs_context.h>
41 #include <sys/dmu_objset.h>
42 #include <sys/dsl_dir.h>
43 #include <sys/dsl_dataset.h>
44 #include <sys/dsl_prop.h>
45 #include <sys/dsl_pool.h>
46 #include <sys/dsl_synctask.h>
47 #include <sys/dsl_deleg.h>
48 #include <sys/dnode.h>
51 #include <sys/dmu_tx.h>
54 #include <sys/dmu_impl.h>
55 #include <sys/zfs_ioctl.h>
57 #include <sys/zfs_onexit.h>
58 #include <sys/dsl_destroy.h>
60 #include <sys/zfeature.h>
61 #include <sys/policy.h>
62 #include <sys/spa_impl.h>
63 #include <sys/dmu_recv.h>
64 #include <sys/zfs_project.h>
65 #include "zfs_namecheck.h"
68 * Needed to close a window in dnode_move() that allows the objset to be freed
69 * before it can be safely accessed.
74 * Tunable to overwrite the maximum number of threads for the parallelization
75 * of dmu_objset_find_dp, needed to speed up the import of pools with many
77 * Default is 4 times the number of leaf vdevs.
79 int dmu_find_threads = 0;
82 * Backfill lower metadnode objects after this many have been freed.
83 * Backfilling negatively impacts object creation rates, so only do it
84 * if there are enough holes to fill.
86 int dmu_rescan_dnode_threshold = 1 << DN_MAX_INDBLKSHIFT;
88 static char *upgrade_tag = "upgrade_tag";
90 static void dmu_objset_find_dp_cb(void *arg);
92 static void dmu_objset_upgrade(objset_t *os, dmu_objset_upgrade_cb_t cb);
93 static void dmu_objset_upgrade_stop(objset_t *os);
98 rw_init(&os_lock, NULL, RW_DEFAULT, NULL);
102 dmu_objset_fini(void)
104 rw_destroy(&os_lock);
108 dmu_objset_spa(objset_t *os)
114 dmu_objset_zil(objset_t *os)
120 dmu_objset_pool(objset_t *os)
124 if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir)
125 return (ds->ds_dir->dd_pool);
127 return (spa_get_dsl(os->os_spa));
131 dmu_objset_ds(objset_t *os)
133 return (os->os_dsl_dataset);
137 dmu_objset_type(objset_t *os)
139 return (os->os_phys->os_type);
143 dmu_objset_name(objset_t *os, char *buf)
145 dsl_dataset_name(os->os_dsl_dataset, buf);
149 dmu_objset_id(objset_t *os)
151 dsl_dataset_t *ds = os->os_dsl_dataset;
153 return (ds ? ds->ds_object : 0);
157 dmu_objset_dnodesize(objset_t *os)
159 return (os->os_dnodesize);
163 dmu_objset_syncprop(objset_t *os)
165 return (os->os_sync);
169 dmu_objset_logbias(objset_t *os)
171 return (os->os_logbias);
175 checksum_changed_cb(void *arg, uint64_t newval)
180 * Inheritance should have been done by now.
182 ASSERT(newval != ZIO_CHECKSUM_INHERIT);
184 os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE);
188 compression_changed_cb(void *arg, uint64_t newval)
193 * Inheritance and range checking should have been done by now.
195 ASSERT(newval != ZIO_COMPRESS_INHERIT);
197 os->os_compress = zio_compress_select(os->os_spa,
198 ZIO_COMPRESS_ALGO(newval), ZIO_COMPRESS_ON);
199 os->os_complevel = zio_complevel_select(os->os_spa, os->os_compress,
200 ZIO_COMPRESS_LEVEL(newval), ZIO_COMPLEVEL_DEFAULT);
204 copies_changed_cb(void *arg, uint64_t newval)
209 * Inheritance and range checking should have been done by now.
212 ASSERT(newval <= spa_max_replication(os->os_spa));
214 os->os_copies = newval;
218 dedup_changed_cb(void *arg, uint64_t newval)
221 spa_t *spa = os->os_spa;
222 enum zio_checksum checksum;
225 * Inheritance should have been done by now.
227 ASSERT(newval != ZIO_CHECKSUM_INHERIT);
229 checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF);
231 os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK;
232 os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY);
236 primary_cache_changed_cb(void *arg, uint64_t newval)
241 * Inheritance and range checking should have been done by now.
243 ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE ||
244 newval == ZFS_CACHE_METADATA);
246 os->os_primary_cache = newval;
250 secondary_cache_changed_cb(void *arg, uint64_t newval)
255 * Inheritance and range checking should have been done by now.
257 ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE ||
258 newval == ZFS_CACHE_METADATA);
260 os->os_secondary_cache = newval;
264 sync_changed_cb(void *arg, uint64_t newval)
269 * Inheritance and range checking should have been done by now.
271 ASSERT(newval == ZFS_SYNC_STANDARD || newval == ZFS_SYNC_ALWAYS ||
272 newval == ZFS_SYNC_DISABLED);
274 os->os_sync = newval;
276 zil_set_sync(os->os_zil, newval);
280 redundant_metadata_changed_cb(void *arg, uint64_t newval)
285 * Inheritance and range checking should have been done by now.
287 ASSERT(newval == ZFS_REDUNDANT_METADATA_ALL ||
288 newval == ZFS_REDUNDANT_METADATA_MOST);
290 os->os_redundant_metadata = newval;
294 dnodesize_changed_cb(void *arg, uint64_t newval)
299 case ZFS_DNSIZE_LEGACY:
300 os->os_dnodesize = DNODE_MIN_SIZE;
302 case ZFS_DNSIZE_AUTO:
304 * Choose a dnode size that will work well for most
305 * workloads if the user specified "auto". Future code
306 * improvements could dynamically select a dnode size
307 * based on observed workload patterns.
309 os->os_dnodesize = DNODE_MIN_SIZE * 2;
316 os->os_dnodesize = newval;
322 smallblk_changed_cb(void *arg, uint64_t newval)
327 * Inheritance and range checking should have been done by now.
329 ASSERT(newval <= SPA_OLD_MAXBLOCKSIZE);
330 ASSERT(ISP2(newval));
332 os->os_zpl_special_smallblock = newval;
336 logbias_changed_cb(void *arg, uint64_t newval)
340 ASSERT(newval == ZFS_LOGBIAS_LATENCY ||
341 newval == ZFS_LOGBIAS_THROUGHPUT);
342 os->os_logbias = newval;
344 zil_set_logbias(os->os_zil, newval);
348 recordsize_changed_cb(void *arg, uint64_t newval)
352 os->os_recordsize = newval;
356 dmu_objset_byteswap(void *buf, size_t size)
358 objset_phys_t *osp = buf;
360 ASSERT(size == OBJSET_PHYS_SIZE_V1 || size == OBJSET_PHYS_SIZE_V2 ||
361 size == sizeof (objset_phys_t));
362 dnode_byteswap(&osp->os_meta_dnode);
363 byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t));
364 osp->os_type = BSWAP_64(osp->os_type);
365 osp->os_flags = BSWAP_64(osp->os_flags);
366 if (size >= OBJSET_PHYS_SIZE_V2) {
367 dnode_byteswap(&osp->os_userused_dnode);
368 dnode_byteswap(&osp->os_groupused_dnode);
369 if (size >= sizeof (objset_phys_t))
370 dnode_byteswap(&osp->os_projectused_dnode);
375 * The hash is a CRC-based hash of the objset_t pointer and the object number.
378 dnode_hash(const objset_t *os, uint64_t obj)
380 uintptr_t osv = (uintptr_t)os;
381 uint64_t crc = -1ULL;
383 ASSERT(zfs_crc64_table[128] == ZFS_CRC64_POLY);
385 * The low 6 bits of the pointer don't have much entropy, because
386 * the objset_t is larger than 2^6 bytes long.
388 crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (osv >> 6)) & 0xFF];
389 crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 0)) & 0xFF];
390 crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 8)) & 0xFF];
391 crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 16)) & 0xFF];
393 crc ^= (osv>>14) ^ (obj>>24);
399 dnode_multilist_index_func(multilist_t *ml, void *obj)
402 return (dnode_hash(dn->dn_objset, dn->dn_object) %
403 multilist_get_num_sublists(ml));
407 * Instantiates the objset_t in-memory structure corresponding to the
408 * objset_phys_t that's pointed to by the specified blkptr_t.
411 dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
417 ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock));
418 ASSERT(!BP_IS_REDACTED(bp));
421 * We need the pool config lock to get properties.
423 ASSERT(ds == NULL || dsl_pool_config_held(ds->ds_dir->dd_pool));
426 * The $ORIGIN dataset (if it exists) doesn't have an associated
427 * objset, so there's no reason to open it. The $ORIGIN dataset
428 * will not exist on pools older than SPA_VERSION_ORIGIN.
430 if (ds != NULL && spa_get_dsl(spa) != NULL &&
431 spa_get_dsl(spa)->dp_origin_snap != NULL) {
432 ASSERT3P(ds->ds_dir, !=,
433 spa_get_dsl(spa)->dp_origin_snap->ds_dir);
436 os = kmem_zalloc(sizeof (objset_t), KM_SLEEP);
437 os->os_dsl_dataset = ds;
440 if (!BP_IS_HOLE(os->os_rootbp)) {
441 arc_flags_t aflags = ARC_FLAG_WAIT;
444 enum zio_flag zio_flags = ZIO_FLAG_CANFAIL;
445 SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET,
446 ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
448 if (DMU_OS_IS_L2CACHEABLE(os))
449 aflags |= ARC_FLAG_L2CACHE;
451 if (ds != NULL && ds->ds_dir->dd_crypto_obj != 0) {
452 ASSERT3U(BP_GET_COMPRESS(bp), ==, ZIO_COMPRESS_OFF);
453 ASSERT(BP_IS_AUTHENTICATED(bp));
454 zio_flags |= ZIO_FLAG_RAW;
457 dprintf_bp(os->os_rootbp, "reading %s", "");
458 err = arc_read(NULL, spa, os->os_rootbp,
459 arc_getbuf_func, &os->os_phys_buf,
460 ZIO_PRIORITY_SYNC_READ, zio_flags, &aflags, &zb);
462 kmem_free(os, sizeof (objset_t));
463 /* convert checksum errors into IO errors */
465 err = SET_ERROR(EIO);
469 if (spa_version(spa) < SPA_VERSION_USERSPACE)
470 size = OBJSET_PHYS_SIZE_V1;
471 else if (!spa_feature_is_enabled(spa,
472 SPA_FEATURE_PROJECT_QUOTA))
473 size = OBJSET_PHYS_SIZE_V2;
475 size = sizeof (objset_phys_t);
477 /* Increase the blocksize if we are permitted. */
478 if (arc_buf_size(os->os_phys_buf) < size) {
479 arc_buf_t *buf = arc_alloc_buf(spa, &os->os_phys_buf,
480 ARC_BUFC_METADATA, size);
481 bzero(buf->b_data, size);
482 bcopy(os->os_phys_buf->b_data, buf->b_data,
483 arc_buf_size(os->os_phys_buf));
484 arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf);
485 os->os_phys_buf = buf;
488 os->os_phys = os->os_phys_buf->b_data;
489 os->os_flags = os->os_phys->os_flags;
491 int size = spa_version(spa) >= SPA_VERSION_USERSPACE ?
492 sizeof (objset_phys_t) : OBJSET_PHYS_SIZE_V1;
493 os->os_phys_buf = arc_alloc_buf(spa, &os->os_phys_buf,
494 ARC_BUFC_METADATA, size);
495 os->os_phys = os->os_phys_buf->b_data;
496 bzero(os->os_phys, size);
499 * These properties will be filled in by the logic in zfs_get_zplprop()
500 * when they are queried for the first time.
502 os->os_version = OBJSET_PROP_UNINITIALIZED;
503 os->os_normalization = OBJSET_PROP_UNINITIALIZED;
504 os->os_utf8only = OBJSET_PROP_UNINITIALIZED;
505 os->os_casesensitivity = OBJSET_PROP_UNINITIALIZED;
508 * Note: the changed_cb will be called once before the register
509 * func returns, thus changing the checksum/compression from the
510 * default (fletcher2/off). Snapshots don't need to know about
511 * checksum/compression/copies.
514 os->os_encrypted = (ds->ds_dir->dd_crypto_obj != 0);
516 err = dsl_prop_register(ds,
517 zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE),
518 primary_cache_changed_cb, os);
520 err = dsl_prop_register(ds,
521 zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE),
522 secondary_cache_changed_cb, os);
524 if (!ds->ds_is_snapshot) {
526 err = dsl_prop_register(ds,
527 zfs_prop_to_name(ZFS_PROP_CHECKSUM),
528 checksum_changed_cb, os);
531 err = dsl_prop_register(ds,
532 zfs_prop_to_name(ZFS_PROP_COMPRESSION),
533 compression_changed_cb, os);
536 err = dsl_prop_register(ds,
537 zfs_prop_to_name(ZFS_PROP_COPIES),
538 copies_changed_cb, os);
541 err = dsl_prop_register(ds,
542 zfs_prop_to_name(ZFS_PROP_DEDUP),
543 dedup_changed_cb, os);
546 err = dsl_prop_register(ds,
547 zfs_prop_to_name(ZFS_PROP_LOGBIAS),
548 logbias_changed_cb, os);
551 err = dsl_prop_register(ds,
552 zfs_prop_to_name(ZFS_PROP_SYNC),
553 sync_changed_cb, os);
556 err = dsl_prop_register(ds,
558 ZFS_PROP_REDUNDANT_METADATA),
559 redundant_metadata_changed_cb, os);
562 err = dsl_prop_register(ds,
563 zfs_prop_to_name(ZFS_PROP_RECORDSIZE),
564 recordsize_changed_cb, os);
567 err = dsl_prop_register(ds,
568 zfs_prop_to_name(ZFS_PROP_DNODESIZE),
569 dnodesize_changed_cb, os);
572 err = dsl_prop_register(ds,
574 ZFS_PROP_SPECIAL_SMALL_BLOCKS),
575 smallblk_changed_cb, os);
579 arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf);
580 kmem_free(os, sizeof (objset_t));
584 /* It's the meta-objset. */
585 os->os_checksum = ZIO_CHECKSUM_FLETCHER_4;
586 os->os_compress = ZIO_COMPRESS_ON;
587 os->os_complevel = ZIO_COMPLEVEL_DEFAULT;
588 os->os_encrypted = B_FALSE;
589 os->os_copies = spa_max_replication(spa);
590 os->os_dedup_checksum = ZIO_CHECKSUM_OFF;
591 os->os_dedup_verify = B_FALSE;
592 os->os_logbias = ZFS_LOGBIAS_LATENCY;
593 os->os_sync = ZFS_SYNC_STANDARD;
594 os->os_primary_cache = ZFS_CACHE_ALL;
595 os->os_secondary_cache = ZFS_CACHE_ALL;
596 os->os_dnodesize = DNODE_MIN_SIZE;
599 if (ds == NULL || !ds->ds_is_snapshot)
600 os->os_zil_header = os->os_phys->os_zil_header;
601 os->os_zil = zil_alloc(os, &os->os_zil_header);
603 for (i = 0; i < TXG_SIZE; i++) {
604 os->os_dirty_dnodes[i] = multilist_create(sizeof (dnode_t),
605 offsetof(dnode_t, dn_dirty_link[i]),
606 dnode_multilist_index_func);
608 list_create(&os->os_dnodes, sizeof (dnode_t),
609 offsetof(dnode_t, dn_link));
610 list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t),
611 offsetof(dmu_buf_impl_t, db_link));
613 list_link_init(&os->os_evicting_node);
615 mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL);
616 mutex_init(&os->os_userused_lock, NULL, MUTEX_DEFAULT, NULL);
617 mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL);
618 mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL);
619 os->os_obj_next_percpu_len = boot_ncpus;
620 os->os_obj_next_percpu = kmem_zalloc(os->os_obj_next_percpu_len *
621 sizeof (os->os_obj_next_percpu[0]), KM_SLEEP);
623 dnode_special_open(os, &os->os_phys->os_meta_dnode,
624 DMU_META_DNODE_OBJECT, &os->os_meta_dnode);
625 if (OBJSET_BUF_HAS_USERUSED(os->os_phys_buf)) {
626 dnode_special_open(os, &os->os_phys->os_userused_dnode,
627 DMU_USERUSED_OBJECT, &os->os_userused_dnode);
628 dnode_special_open(os, &os->os_phys->os_groupused_dnode,
629 DMU_GROUPUSED_OBJECT, &os->os_groupused_dnode);
630 if (OBJSET_BUF_HAS_PROJECTUSED(os->os_phys_buf))
631 dnode_special_open(os,
632 &os->os_phys->os_projectused_dnode,
633 DMU_PROJECTUSED_OBJECT, &os->os_projectused_dnode);
636 mutex_init(&os->os_upgrade_lock, NULL, MUTEX_DEFAULT, NULL);
643 dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp)
648 * We need the pool_config lock to manipulate the dsl_dataset_t.
649 * Even if the dataset is long-held, we need the pool_config lock
650 * to open the objset, as it needs to get properties.
652 ASSERT(dsl_pool_config_held(ds->ds_dir->dd_pool));
654 mutex_enter(&ds->ds_opening_lock);
655 if (ds->ds_objset == NULL) {
657 rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG);
658 err = dmu_objset_open_impl(dsl_dataset_get_spa(ds),
659 ds, dsl_dataset_get_blkptr(ds), &os);
660 rrw_exit(&ds->ds_bp_rwlock, FTAG);
663 mutex_enter(&ds->ds_lock);
664 ASSERT(ds->ds_objset == NULL);
666 mutex_exit(&ds->ds_lock);
669 *osp = ds->ds_objset;
670 mutex_exit(&ds->ds_opening_lock);
675 * Holds the pool while the objset is held. Therefore only one objset
676 * can be held at a time.
679 dmu_objset_hold_flags(const char *name, boolean_t decrypt, void *tag,
685 ds_hold_flags_t flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : 0;
687 err = dsl_pool_hold(name, tag, &dp);
690 err = dsl_dataset_hold_flags(dp, name, flags, tag, &ds);
692 dsl_pool_rele(dp, tag);
696 err = dmu_objset_from_ds(ds, osp);
698 dsl_dataset_rele(ds, tag);
699 dsl_pool_rele(dp, tag);
706 dmu_objset_hold(const char *name, void *tag, objset_t **osp)
708 return (dmu_objset_hold_flags(name, B_FALSE, tag, osp));
712 dmu_objset_own_impl(dsl_dataset_t *ds, dmu_objset_type_t type,
713 boolean_t readonly, boolean_t decrypt, void *tag, objset_t **osp)
717 err = dmu_objset_from_ds(ds, osp);
720 } else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) {
721 return (SET_ERROR(EINVAL));
722 } else if (!readonly && dsl_dataset_is_snapshot(ds)) {
723 return (SET_ERROR(EROFS));
724 } else if (!readonly && decrypt &&
725 dsl_dir_incompatible_encryption_version(ds->ds_dir)) {
726 return (SET_ERROR(EROFS));
729 /* if we are decrypting, we can now check MACs in os->os_phys_buf */
730 if (decrypt && arc_is_unauthenticated((*osp)->os_phys_buf)) {
733 SET_BOOKMARK(&zb, ds->ds_object, ZB_ROOT_OBJECT,
734 ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
735 err = arc_untransform((*osp)->os_phys_buf, (*osp)->os_spa,
740 ASSERT0(arc_is_unauthenticated((*osp)->os_phys_buf));
747 * dsl_pool must not be held when this is called.
748 * Upon successful return, there will be a longhold on the dataset,
749 * and the dsl_pool will not be held.
752 dmu_objset_own(const char *name, dmu_objset_type_t type,
753 boolean_t readonly, boolean_t decrypt, void *tag, objset_t **osp)
758 ds_hold_flags_t flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : 0;
760 err = dsl_pool_hold(name, FTAG, &dp);
763 err = dsl_dataset_own(dp, name, flags, tag, &ds);
765 dsl_pool_rele(dp, FTAG);
768 err = dmu_objset_own_impl(ds, type, readonly, decrypt, tag, osp);
770 dsl_dataset_disown(ds, flags, tag);
771 dsl_pool_rele(dp, FTAG);
776 * User accounting requires the dataset to be decrypted and rw.
777 * We also don't begin user accounting during claiming to help
778 * speed up pool import times and to keep this txg reserved
779 * completely for recovery work.
781 if ((dmu_objset_userobjspace_upgradable(*osp) ||
782 dmu_objset_projectquota_upgradable(*osp)) &&
783 !readonly && !dp->dp_spa->spa_claiming &&
784 (ds->ds_dir->dd_crypto_obj == 0 || decrypt))
785 dmu_objset_id_quota_upgrade(*osp);
787 dsl_pool_rele(dp, FTAG);
792 dmu_objset_own_obj(dsl_pool_t *dp, uint64_t obj, dmu_objset_type_t type,
793 boolean_t readonly, boolean_t decrypt, void *tag, objset_t **osp)
797 ds_hold_flags_t flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : 0;
799 err = dsl_dataset_own_obj(dp, obj, flags, tag, &ds);
803 err = dmu_objset_own_impl(ds, type, readonly, decrypt, tag, osp);
805 dsl_dataset_disown(ds, flags, tag);
813 dmu_objset_rele_flags(objset_t *os, boolean_t decrypt, void *tag)
815 ds_hold_flags_t flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : 0;
817 dsl_pool_t *dp = dmu_objset_pool(os);
818 dsl_dataset_rele_flags(os->os_dsl_dataset, flags, tag);
819 dsl_pool_rele(dp, tag);
823 dmu_objset_rele(objset_t *os, void *tag)
825 dmu_objset_rele_flags(os, B_FALSE, tag);
829 * When we are called, os MUST refer to an objset associated with a dataset
830 * that is owned by 'tag'; that is, is held and long held by 'tag' and ds_owner
831 * == tag. We will then release and reacquire ownership of the dataset while
832 * holding the pool config_rwlock to avoid intervening namespace or ownership
835 * This exists solely to accommodate zfs_ioc_userspace_upgrade()'s desire to
836 * release the hold on its dataset and acquire a new one on the dataset of the
837 * same name so that it can be partially torn down and reconstructed.
840 dmu_objset_refresh_ownership(dsl_dataset_t *ds, dsl_dataset_t **newds,
841 boolean_t decrypt, void *tag)
844 char name[ZFS_MAX_DATASET_NAME_LEN];
846 VERIFY3P(ds, !=, NULL);
847 VERIFY3P(ds->ds_owner, ==, tag);
848 VERIFY(dsl_dataset_long_held(ds));
850 dsl_dataset_name(ds, name);
851 dp = ds->ds_dir->dd_pool;
852 dsl_pool_config_enter(dp, FTAG);
853 dsl_dataset_disown(ds, decrypt, tag);
854 VERIFY0(dsl_dataset_own(dp, name,
855 (decrypt) ? DS_HOLD_FLAG_DECRYPT : 0, tag, newds));
856 dsl_pool_config_exit(dp, FTAG);
860 dmu_objset_disown(objset_t *os, boolean_t decrypt, void *tag)
863 * Stop upgrading thread
865 dmu_objset_upgrade_stop(os);
866 dsl_dataset_disown(os->os_dsl_dataset,
867 (decrypt) ? DS_HOLD_FLAG_DECRYPT : 0, tag);
871 dmu_objset_evict_dbufs(objset_t *os)
876 dn_marker = kmem_alloc(sizeof (dnode_t), KM_SLEEP);
878 mutex_enter(&os->os_lock);
879 dn = list_head(&os->os_dnodes);
882 * Skip dnodes without holds. We have to do this dance
883 * because dnode_add_ref() only works if there is already a
884 * hold. If the dnode has no holds, then it has no dbufs.
886 if (dnode_add_ref(dn, FTAG)) {
887 list_insert_after(&os->os_dnodes, dn, dn_marker);
888 mutex_exit(&os->os_lock);
890 dnode_evict_dbufs(dn);
891 dnode_rele(dn, FTAG);
893 mutex_enter(&os->os_lock);
894 dn = list_next(&os->os_dnodes, dn_marker);
895 list_remove(&os->os_dnodes, dn_marker);
897 dn = list_next(&os->os_dnodes, dn);
900 mutex_exit(&os->os_lock);
902 kmem_free(dn_marker, sizeof (dnode_t));
904 if (DMU_USERUSED_DNODE(os) != NULL) {
905 if (DMU_PROJECTUSED_DNODE(os) != NULL)
906 dnode_evict_dbufs(DMU_PROJECTUSED_DNODE(os));
907 dnode_evict_dbufs(DMU_GROUPUSED_DNODE(os));
908 dnode_evict_dbufs(DMU_USERUSED_DNODE(os));
910 dnode_evict_dbufs(DMU_META_DNODE(os));
914 * Objset eviction processing is split into into two pieces.
915 * The first marks the objset as evicting, evicts any dbufs that
916 * have a refcount of zero, and then queues up the objset for the
917 * second phase of eviction. Once os->os_dnodes has been cleared by
918 * dnode_buf_pageout()->dnode_destroy(), the second phase is executed.
919 * The second phase closes the special dnodes, dequeues the objset from
920 * the list of those undergoing eviction, and finally frees the objset.
922 * NOTE: Due to asynchronous eviction processing (invocation of
923 * dnode_buf_pageout()), it is possible for the meta dnode for the
924 * objset to have no holds even though os->os_dnodes is not empty.
927 dmu_objset_evict(objset_t *os)
929 dsl_dataset_t *ds = os->os_dsl_dataset;
931 for (int t = 0; t < TXG_SIZE; t++)
932 ASSERT(!dmu_objset_is_dirty(os, t));
935 dsl_prop_unregister_all(ds, os);
940 dmu_objset_evict_dbufs(os);
942 mutex_enter(&os->os_lock);
943 spa_evicting_os_register(os->os_spa, os);
944 if (list_is_empty(&os->os_dnodes)) {
945 mutex_exit(&os->os_lock);
946 dmu_objset_evict_done(os);
948 mutex_exit(&os->os_lock);
955 dmu_objset_evict_done(objset_t *os)
957 ASSERT3P(list_head(&os->os_dnodes), ==, NULL);
959 dnode_special_close(&os->os_meta_dnode);
960 if (DMU_USERUSED_DNODE(os)) {
961 if (DMU_PROJECTUSED_DNODE(os))
962 dnode_special_close(&os->os_projectused_dnode);
963 dnode_special_close(&os->os_userused_dnode);
964 dnode_special_close(&os->os_groupused_dnode);
966 zil_free(os->os_zil);
968 arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf);
971 * This is a barrier to prevent the objset from going away in
972 * dnode_move() until we can safely ensure that the objset is still in
973 * use. We consider the objset valid before the barrier and invalid
976 rw_enter(&os_lock, RW_READER);
979 kmem_free(os->os_obj_next_percpu,
980 os->os_obj_next_percpu_len * sizeof (os->os_obj_next_percpu[0]));
982 mutex_destroy(&os->os_lock);
983 mutex_destroy(&os->os_userused_lock);
984 mutex_destroy(&os->os_obj_lock);
985 mutex_destroy(&os->os_user_ptr_lock);
986 mutex_destroy(&os->os_upgrade_lock);
987 for (int i = 0; i < TXG_SIZE; i++) {
988 multilist_destroy(os->os_dirty_dnodes[i]);
990 spa_evicting_os_deregister(os->os_spa, os);
991 kmem_free(os, sizeof (objset_t));
995 dmu_objset_snap_cmtime(objset_t *os)
997 return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir));
1001 dmu_objset_create_impl_dnstats(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
1002 dmu_objset_type_t type, int levels, int blksz, int ibs, dmu_tx_t *tx)
1007 ASSERT(dmu_tx_is_syncing(tx));
1010 blksz = DNODE_BLOCK_SIZE;
1012 ibs = DN_MAX_INDBLKSHIFT;
1015 VERIFY0(dmu_objset_from_ds(ds, &os));
1017 VERIFY0(dmu_objset_open_impl(spa, NULL, bp, &os));
1019 mdn = DMU_META_DNODE(os);
1021 dnode_allocate(mdn, DMU_OT_DNODE, blksz, ibs, DMU_OT_NONE, 0,
1022 DNODE_MIN_SLOTS, tx);
1025 * We don't want to have to increase the meta-dnode's nlevels
1026 * later, because then we could do it in quiescing context while
1027 * we are also accessing it in open context.
1029 * This precaution is not necessary for the MOS (ds == NULL),
1030 * because the MOS is only updated in syncing context.
1031 * This is most fortunate: the MOS is the only objset that
1032 * needs to be synced multiple times as spa_sync() iterates
1033 * to convergence, so minimizing its dn_nlevels matters.
1040 * Determine the number of levels necessary for the
1041 * meta-dnode to contain DN_MAX_OBJECT dnodes. Note
1042 * that in order to ensure that we do not overflow
1043 * 64 bits, there has to be a nlevels that gives us a
1044 * number of blocks > DN_MAX_OBJECT but < 2^64.
1045 * Therefore, (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)
1046 * (10) must be less than (64 - log2(DN_MAX_OBJECT))
1049 while ((uint64_t)mdn->dn_nblkptr <<
1050 (mdn->dn_datablkshift - DNODE_SHIFT + (levels - 1) *
1051 (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) <
1056 mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] =
1057 mdn->dn_nlevels = levels;
1060 ASSERT(type != DMU_OST_NONE);
1061 ASSERT(type != DMU_OST_ANY);
1062 ASSERT(type < DMU_OST_NUMTYPES);
1063 os->os_phys->os_type = type;
1066 * Enable user accounting if it is enabled and this is not an
1067 * encrypted receive.
1069 if (dmu_objset_userused_enabled(os) &&
1070 (!os->os_encrypted || !dmu_objset_is_receiving(os))) {
1071 os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE;
1072 if (dmu_objset_userobjused_enabled(os)) {
1073 ds->ds_feature_activation[
1074 SPA_FEATURE_USEROBJ_ACCOUNTING] = (void *)B_TRUE;
1075 os->os_phys->os_flags |=
1076 OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE;
1078 if (dmu_objset_projectquota_enabled(os)) {
1079 ds->ds_feature_activation[
1080 SPA_FEATURE_PROJECT_QUOTA] = (void *)B_TRUE;
1081 os->os_phys->os_flags |=
1082 OBJSET_FLAG_PROJECTQUOTA_COMPLETE;
1084 os->os_flags = os->os_phys->os_flags;
1087 dsl_dataset_dirty(ds, tx);
1092 /* called from dsl for meta-objset */
1094 dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
1095 dmu_objset_type_t type, dmu_tx_t *tx)
1097 return (dmu_objset_create_impl_dnstats(spa, ds, bp, type, 0, 0, 0, tx));
1100 typedef struct dmu_objset_create_arg {
1101 const char *doca_name;
1104 void (*doca_userfunc)(objset_t *os, void *arg,
1105 cred_t *cr, dmu_tx_t *tx);
1107 dmu_objset_type_t doca_type;
1108 uint64_t doca_flags;
1109 dsl_crypto_params_t *doca_dcp;
1110 } dmu_objset_create_arg_t;
1114 dmu_objset_create_check(void *arg, dmu_tx_t *tx)
1116 dmu_objset_create_arg_t *doca = arg;
1117 dsl_pool_t *dp = dmu_tx_pool(tx);
1119 dsl_dataset_t *parentds;
1124 if (strchr(doca->doca_name, '@') != NULL)
1125 return (SET_ERROR(EINVAL));
1127 if (strlen(doca->doca_name) >= ZFS_MAX_DATASET_NAME_LEN)
1128 return (SET_ERROR(ENAMETOOLONG));
1130 if (dataset_nestcheck(doca->doca_name) != 0)
1131 return (SET_ERROR(ENAMETOOLONG));
1133 error = dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail);
1137 dsl_dir_rele(pdd, FTAG);
1138 return (SET_ERROR(EEXIST));
1141 error = dmu_objset_create_crypt_check(pdd, doca->doca_dcp, NULL);
1143 dsl_dir_rele(pdd, FTAG);
1147 error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL,
1148 doca->doca_cred, doca->doca_proc);
1150 dsl_dir_rele(pdd, FTAG);
1154 /* can't create below anything but filesystems (eg. no ZVOLs) */
1155 error = dsl_dataset_hold_obj(pdd->dd_pool,
1156 dsl_dir_phys(pdd)->dd_head_dataset_obj, FTAG, &parentds);
1158 dsl_dir_rele(pdd, FTAG);
1161 error = dmu_objset_from_ds(parentds, &parentos);
1163 dsl_dataset_rele(parentds, FTAG);
1164 dsl_dir_rele(pdd, FTAG);
1167 if (dmu_objset_type(parentos) != DMU_OST_ZFS) {
1168 dsl_dataset_rele(parentds, FTAG);
1169 dsl_dir_rele(pdd, FTAG);
1170 return (SET_ERROR(ZFS_ERR_WRONG_PARENT));
1172 dsl_dataset_rele(parentds, FTAG);
1173 dsl_dir_rele(pdd, FTAG);
1179 dmu_objset_create_sync(void *arg, dmu_tx_t *tx)
1181 dmu_objset_create_arg_t *doca = arg;
1182 dsl_pool_t *dp = dmu_tx_pool(tx);
1183 spa_t *spa = dp->dp_spa;
1192 VERIFY0(dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail));
1194 obj = dsl_dataset_create_sync(pdd, tail, NULL, doca->doca_flags,
1195 doca->doca_cred, doca->doca_dcp, tx);
1197 VERIFY0(dsl_dataset_hold_obj_flags(pdd->dd_pool, obj,
1198 DS_HOLD_FLAG_DECRYPT, FTAG, &ds));
1199 rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG);
1200 bp = dsl_dataset_get_blkptr(ds);
1201 os = dmu_objset_create_impl(spa, ds, bp, doca->doca_type, tx);
1202 rrw_exit(&ds->ds_bp_rwlock, FTAG);
1204 if (doca->doca_userfunc != NULL) {
1205 doca->doca_userfunc(os, doca->doca_userarg,
1206 doca->doca_cred, tx);
1210 * The doca_userfunc() may write out some data that needs to be
1211 * encrypted if the dataset is encrypted (specifically the root
1212 * directory). This data must be written out before the encryption
1213 * key mapping is removed by dsl_dataset_rele_flags(). Force the
1214 * I/O to occur immediately by invoking the relevant sections of
1217 if (os->os_encrypted) {
1218 dsl_dataset_t *tmpds = NULL;
1219 boolean_t need_sync_done = B_FALSE;
1221 mutex_enter(&ds->ds_lock);
1222 ds->ds_owner = FTAG;
1223 mutex_exit(&ds->ds_lock);
1225 rzio = zio_root(spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
1226 tmpds = txg_list_remove_this(&dp->dp_dirty_datasets, ds,
1228 if (tmpds != NULL) {
1229 dsl_dataset_sync(ds, rzio, tx);
1230 need_sync_done = B_TRUE;
1232 VERIFY0(zio_wait(rzio));
1234 dmu_objset_do_userquota_updates(os, tx);
1235 taskq_wait(dp->dp_sync_taskq);
1236 if (txg_list_member(&dp->dp_dirty_datasets, ds, tx->tx_txg)) {
1237 ASSERT3P(ds->ds_key_mapping, !=, NULL);
1238 key_mapping_rele(spa, ds->ds_key_mapping, ds);
1241 rzio = zio_root(spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
1242 tmpds = txg_list_remove_this(&dp->dp_dirty_datasets, ds,
1244 if (tmpds != NULL) {
1245 dmu_buf_rele(ds->ds_dbuf, ds);
1246 dsl_dataset_sync(ds, rzio, tx);
1248 VERIFY0(zio_wait(rzio));
1250 if (need_sync_done) {
1251 ASSERT3P(ds->ds_key_mapping, !=, NULL);
1252 key_mapping_rele(spa, ds->ds_key_mapping, ds);
1253 dsl_dataset_sync_done(ds, tx);
1256 mutex_enter(&ds->ds_lock);
1257 ds->ds_owner = NULL;
1258 mutex_exit(&ds->ds_lock);
1261 spa_history_log_internal_ds(ds, "create", tx, " ");
1263 dsl_dataset_rele_flags(ds, DS_HOLD_FLAG_DECRYPT, FTAG);
1264 dsl_dir_rele(pdd, FTAG);
1268 dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags,
1269 dsl_crypto_params_t *dcp, dmu_objset_create_sync_func_t func, void *arg)
1271 dmu_objset_create_arg_t doca;
1272 dsl_crypto_params_t tmp_dcp = { 0 };
1274 doca.doca_name = name;
1275 doca.doca_cred = CRED();
1276 doca.doca_proc = curproc;
1277 doca.doca_flags = flags;
1278 doca.doca_userfunc = func;
1279 doca.doca_userarg = arg;
1280 doca.doca_type = type;
1283 * Some callers (mostly for testing) do not provide a dcp on their
1284 * own but various code inside the sync task will require it to be
1285 * allocated. Rather than adding NULL checks throughout this code
1286 * or adding dummy dcp's to all of the callers we simply create a
1287 * dummy one here and use that. This zero dcp will have the same
1288 * effect as asking for inheritance of all encryption params.
1290 doca.doca_dcp = (dcp != NULL) ? dcp : &tmp_dcp;
1292 int rv = dsl_sync_task(name,
1293 dmu_objset_create_check, dmu_objset_create_sync, &doca,
1294 6, ZFS_SPACE_CHECK_NORMAL);
1297 zvol_create_minor(name);
1301 typedef struct dmu_objset_clone_arg {
1302 const char *doca_clone;
1303 const char *doca_origin;
1306 } dmu_objset_clone_arg_t;
1310 dmu_objset_clone_check(void *arg, dmu_tx_t *tx)
1312 dmu_objset_clone_arg_t *doca = arg;
1316 dsl_dataset_t *origin;
1317 dsl_pool_t *dp = dmu_tx_pool(tx);
1319 if (strchr(doca->doca_clone, '@') != NULL)
1320 return (SET_ERROR(EINVAL));
1322 if (strlen(doca->doca_clone) >= ZFS_MAX_DATASET_NAME_LEN)
1323 return (SET_ERROR(ENAMETOOLONG));
1325 error = dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail);
1329 dsl_dir_rele(pdd, FTAG);
1330 return (SET_ERROR(EEXIST));
1333 error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL,
1334 doca->doca_cred, doca->doca_proc);
1336 dsl_dir_rele(pdd, FTAG);
1337 return (SET_ERROR(EDQUOT));
1340 error = dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin);
1342 dsl_dir_rele(pdd, FTAG);
1346 /* You can only clone snapshots, not the head datasets. */
1347 if (!origin->ds_is_snapshot) {
1348 dsl_dataset_rele(origin, FTAG);
1349 dsl_dir_rele(pdd, FTAG);
1350 return (SET_ERROR(EINVAL));
1353 dsl_dataset_rele(origin, FTAG);
1354 dsl_dir_rele(pdd, FTAG);
1360 dmu_objset_clone_sync(void *arg, dmu_tx_t *tx)
1362 dmu_objset_clone_arg_t *doca = arg;
1363 dsl_pool_t *dp = dmu_tx_pool(tx);
1366 dsl_dataset_t *origin, *ds;
1368 char namebuf[ZFS_MAX_DATASET_NAME_LEN];
1370 VERIFY0(dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail));
1371 VERIFY0(dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin));
1373 obj = dsl_dataset_create_sync(pdd, tail, origin, 0,
1374 doca->doca_cred, NULL, tx);
1376 VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds));
1377 dsl_dataset_name(origin, namebuf);
1378 spa_history_log_internal_ds(ds, "clone", tx,
1379 "origin=%s (%llu)", namebuf, (u_longlong_t)origin->ds_object);
1380 dsl_dataset_rele(ds, FTAG);
1381 dsl_dataset_rele(origin, FTAG);
1382 dsl_dir_rele(pdd, FTAG);
1386 dmu_objset_clone(const char *clone, const char *origin)
1388 dmu_objset_clone_arg_t doca;
1390 doca.doca_clone = clone;
1391 doca.doca_origin = origin;
1392 doca.doca_cred = CRED();
1393 doca.doca_proc = curproc;
1395 int rv = dsl_sync_task(clone,
1396 dmu_objset_clone_check, dmu_objset_clone_sync, &doca,
1397 6, ZFS_SPACE_CHECK_NORMAL);
1400 zvol_create_minor(clone);
1406 dmu_objset_snapshot_one(const char *fsname, const char *snapname)
1409 char *longsnap = kmem_asprintf("%s@%s", fsname, snapname);
1410 nvlist_t *snaps = fnvlist_alloc();
1412 fnvlist_add_boolean(snaps, longsnap);
1413 kmem_strfree(longsnap);
1414 err = dsl_dataset_snapshot(snaps, NULL, NULL);
1415 fnvlist_free(snaps);
1420 dmu_objset_upgrade_task_cb(void *data)
1422 objset_t *os = data;
1424 mutex_enter(&os->os_upgrade_lock);
1425 os->os_upgrade_status = EINTR;
1426 if (!os->os_upgrade_exit) {
1427 mutex_exit(&os->os_upgrade_lock);
1429 os->os_upgrade_status = os->os_upgrade_cb(os);
1430 mutex_enter(&os->os_upgrade_lock);
1432 os->os_upgrade_exit = B_TRUE;
1433 os->os_upgrade_id = 0;
1434 mutex_exit(&os->os_upgrade_lock);
1435 dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag);
1439 dmu_objset_upgrade(objset_t *os, dmu_objset_upgrade_cb_t cb)
1441 if (os->os_upgrade_id != 0)
1444 ASSERT(dsl_pool_config_held(dmu_objset_pool(os)));
1445 dsl_dataset_long_hold(dmu_objset_ds(os), upgrade_tag);
1447 mutex_enter(&os->os_upgrade_lock);
1448 if (os->os_upgrade_id == 0 && os->os_upgrade_status == 0) {
1449 os->os_upgrade_exit = B_FALSE;
1450 os->os_upgrade_cb = cb;
1451 os->os_upgrade_id = taskq_dispatch(
1452 os->os_spa->spa_upgrade_taskq,
1453 dmu_objset_upgrade_task_cb, os, TQ_SLEEP);
1454 if (os->os_upgrade_id == TASKQID_INVALID) {
1455 dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag);
1456 os->os_upgrade_status = ENOMEM;
1459 mutex_exit(&os->os_upgrade_lock);
1463 dmu_objset_upgrade_stop(objset_t *os)
1465 mutex_enter(&os->os_upgrade_lock);
1466 os->os_upgrade_exit = B_TRUE;
1467 if (os->os_upgrade_id != 0) {
1468 taskqid_t id = os->os_upgrade_id;
1470 os->os_upgrade_id = 0;
1471 mutex_exit(&os->os_upgrade_lock);
1473 if ((taskq_cancel_id(os->os_spa->spa_upgrade_taskq, id)) == 0) {
1474 dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag);
1476 txg_wait_synced(os->os_spa->spa_dsl_pool, 0);
1478 mutex_exit(&os->os_upgrade_lock);
1483 dmu_objset_sync_dnodes(multilist_sublist_t *list, dmu_tx_t *tx)
1487 while ((dn = multilist_sublist_head(list)) != NULL) {
1488 ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT);
1489 ASSERT(dn->dn_dbuf->db_data_pending);
1491 * Initialize dn_zio outside dnode_sync() because the
1492 * meta-dnode needs to set it outside dnode_sync().
1494 dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio;
1497 ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS);
1498 multilist_sublist_remove(list, dn);
1501 * If we are not doing useraccounting (os_synced_dnodes == NULL)
1502 * we are done with this dnode for this txg. Unset dn_dirty_txg
1503 * if later txgs aren't dirtying it so that future holders do
1504 * not get a stale value. Otherwise, we will do this in
1505 * userquota_updates_task() when processing has completely
1506 * finished for this txg.
1508 multilist_t *newlist = dn->dn_objset->os_synced_dnodes;
1509 if (newlist != NULL) {
1510 (void) dnode_add_ref(dn, newlist);
1511 multilist_insert(newlist, dn);
1513 mutex_enter(&dn->dn_mtx);
1514 if (dn->dn_dirty_txg == tx->tx_txg)
1515 dn->dn_dirty_txg = 0;
1516 mutex_exit(&dn->dn_mtx);
1525 dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg)
1527 blkptr_t *bp = zio->io_bp;
1529 dnode_phys_t *dnp = &os->os_phys->os_meta_dnode;
1532 ASSERT(!BP_IS_EMBEDDED(bp));
1533 ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET);
1534 ASSERT0(BP_GET_LEVEL(bp));
1537 * Update rootbp fill count: it should be the number of objects
1538 * allocated in the object set (not counting the "special"
1539 * objects that are stored in the objset_phys_t -- the meta
1540 * dnode and user/group/project accounting objects).
1542 for (int i = 0; i < dnp->dn_nblkptr; i++)
1543 fill += BP_GET_FILL(&dnp->dn_blkptr[i]);
1545 BP_SET_FILL(bp, fill);
1547 if (os->os_dsl_dataset != NULL)
1548 rrw_enter(&os->os_dsl_dataset->ds_bp_rwlock, RW_WRITER, FTAG);
1549 *os->os_rootbp = *bp;
1550 if (os->os_dsl_dataset != NULL)
1551 rrw_exit(&os->os_dsl_dataset->ds_bp_rwlock, FTAG);
1556 dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg)
1558 blkptr_t *bp = zio->io_bp;
1559 blkptr_t *bp_orig = &zio->io_bp_orig;
1562 if (zio->io_flags & ZIO_FLAG_IO_REWRITE) {
1563 ASSERT(BP_EQUAL(bp, bp_orig));
1565 dsl_dataset_t *ds = os->os_dsl_dataset;
1566 dmu_tx_t *tx = os->os_synctx;
1568 (void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE);
1569 dsl_dataset_block_born(ds, bp, tx);
1571 kmem_free(bp, sizeof (*bp));
1574 typedef struct sync_dnodes_arg {
1575 multilist_t *sda_list;
1576 int sda_sublist_idx;
1577 multilist_t *sda_newlist;
1579 } sync_dnodes_arg_t;
1582 sync_dnodes_task(void *arg)
1584 sync_dnodes_arg_t *sda = arg;
1586 multilist_sublist_t *ms =
1587 multilist_sublist_lock(sda->sda_list, sda->sda_sublist_idx);
1589 dmu_objset_sync_dnodes(ms, sda->sda_tx);
1591 multilist_sublist_unlock(ms);
1593 kmem_free(sda, sizeof (*sda));
1597 /* called from dsl */
1599 dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx)
1602 zbookmark_phys_t zb;
1606 dbuf_dirty_record_t *dr;
1609 blkptr_t *blkptr_copy = kmem_alloc(sizeof (*os->os_rootbp), KM_SLEEP);
1610 *blkptr_copy = *os->os_rootbp;
1612 dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg);
1614 ASSERT(dmu_tx_is_syncing(tx));
1615 /* XXX the write_done callback should really give us the tx... */
1618 if (os->os_dsl_dataset == NULL) {
1620 * This is the MOS. If we have upgraded,
1621 * spa_max_replication() could change, so reset
1624 os->os_copies = spa_max_replication(os->os_spa);
1628 * Create the root block IO
1630 SET_BOOKMARK(&zb, os->os_dsl_dataset ?
1631 os->os_dsl_dataset->ds_object : DMU_META_OBJSET,
1632 ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
1633 arc_release(os->os_phys_buf, &os->os_phys_buf);
1635 dmu_write_policy(os, NULL, 0, 0, &zp);
1638 * If we are either claiming the ZIL or doing a raw receive, write
1639 * out the os_phys_buf raw. Neither of these actions will effect the
1640 * MAC at this point.
1642 if (os->os_raw_receive ||
1643 os->os_next_write_raw[tx->tx_txg & TXG_MASK]) {
1644 ASSERT(os->os_encrypted);
1645 arc_convert_to_raw(os->os_phys_buf,
1646 os->os_dsl_dataset->ds_object, ZFS_HOST_BYTEORDER,
1647 DMU_OT_OBJSET, NULL, NULL, NULL);
1650 zio = arc_write(pio, os->os_spa, tx->tx_txg,
1651 blkptr_copy, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os),
1652 &zp, dmu_objset_write_ready, NULL, NULL, dmu_objset_write_done,
1653 os, ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb);
1656 * Sync special dnodes - the parent IO for the sync is the root block
1658 DMU_META_DNODE(os)->dn_zio = zio;
1659 dnode_sync(DMU_META_DNODE(os), tx);
1661 os->os_phys->os_flags = os->os_flags;
1663 if (DMU_USERUSED_DNODE(os) &&
1664 DMU_USERUSED_DNODE(os)->dn_type != DMU_OT_NONE) {
1665 DMU_USERUSED_DNODE(os)->dn_zio = zio;
1666 dnode_sync(DMU_USERUSED_DNODE(os), tx);
1667 DMU_GROUPUSED_DNODE(os)->dn_zio = zio;
1668 dnode_sync(DMU_GROUPUSED_DNODE(os), tx);
1671 if (DMU_PROJECTUSED_DNODE(os) &&
1672 DMU_PROJECTUSED_DNODE(os)->dn_type != DMU_OT_NONE) {
1673 DMU_PROJECTUSED_DNODE(os)->dn_zio = zio;
1674 dnode_sync(DMU_PROJECTUSED_DNODE(os), tx);
1677 txgoff = tx->tx_txg & TXG_MASK;
1679 if (dmu_objset_userused_enabled(os) &&
1680 (!os->os_encrypted || !dmu_objset_is_receiving(os))) {
1682 * We must create the list here because it uses the
1683 * dn_dirty_link[] of this txg. But it may already
1684 * exist because we call dsl_dataset_sync() twice per txg.
1686 if (os->os_synced_dnodes == NULL) {
1687 os->os_synced_dnodes =
1688 multilist_create(sizeof (dnode_t),
1689 offsetof(dnode_t, dn_dirty_link[txgoff]),
1690 dnode_multilist_index_func);
1692 ASSERT3U(os->os_synced_dnodes->ml_offset, ==,
1693 offsetof(dnode_t, dn_dirty_link[txgoff]));
1697 ml = os->os_dirty_dnodes[txgoff];
1698 num_sublists = multilist_get_num_sublists(ml);
1699 for (int i = 0; i < num_sublists; i++) {
1700 if (multilist_sublist_is_empty_idx(ml, i))
1702 sync_dnodes_arg_t *sda = kmem_alloc(sizeof (*sda), KM_SLEEP);
1704 sda->sda_sublist_idx = i;
1706 (void) taskq_dispatch(dmu_objset_pool(os)->dp_sync_taskq,
1707 sync_dnodes_task, sda, 0);
1708 /* callback frees sda */
1710 taskq_wait(dmu_objset_pool(os)->dp_sync_taskq);
1712 list = &DMU_META_DNODE(os)->dn_dirty_records[txgoff];
1713 while ((dr = list_head(list)) != NULL) {
1714 ASSERT0(dr->dr_dbuf->db_level);
1715 list_remove(list, dr);
1716 zio_nowait(dr->dr_zio);
1719 /* Enable dnode backfill if enough objects have been freed. */
1720 if (os->os_freed_dnodes >= dmu_rescan_dnode_threshold) {
1721 os->os_rescan_dnodes = B_TRUE;
1722 os->os_freed_dnodes = 0;
1726 * Free intent log blocks up to this tx.
1728 zil_sync(os->os_zil, tx);
1729 os->os_phys->os_zil_header = os->os_zil_header;
1734 dmu_objset_is_dirty(objset_t *os, uint64_t txg)
1736 return (!multilist_is_empty(os->os_dirty_dnodes[txg & TXG_MASK]));
1739 static file_info_cb_t *file_cbs[DMU_OST_NUMTYPES];
1742 dmu_objset_register_type(dmu_objset_type_t ost, file_info_cb_t *cb)
1748 dmu_get_file_info(objset_t *os, dmu_object_type_t bonustype, const void *data,
1749 zfs_file_info_t *zfi)
1751 file_info_cb_t *cb = file_cbs[os->os_phys->os_type];
1754 return (cb(bonustype, data, zfi));
1758 dmu_objset_userused_enabled(objset_t *os)
1760 return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE &&
1761 file_cbs[os->os_phys->os_type] != NULL &&
1762 DMU_USERUSED_DNODE(os) != NULL);
1766 dmu_objset_userobjused_enabled(objset_t *os)
1768 return (dmu_objset_userused_enabled(os) &&
1769 spa_feature_is_enabled(os->os_spa, SPA_FEATURE_USEROBJ_ACCOUNTING));
1773 dmu_objset_projectquota_enabled(objset_t *os)
1775 return (file_cbs[os->os_phys->os_type] != NULL &&
1776 DMU_PROJECTUSED_DNODE(os) != NULL &&
1777 spa_feature_is_enabled(os->os_spa, SPA_FEATURE_PROJECT_QUOTA));
1780 typedef struct userquota_node {
1781 /* must be in the first filed, see userquota_update_cache() */
1782 char uqn_id[20 + DMU_OBJACCT_PREFIX_LEN];
1784 avl_node_t uqn_node;
1787 typedef struct userquota_cache {
1788 avl_tree_t uqc_user_deltas;
1789 avl_tree_t uqc_group_deltas;
1790 avl_tree_t uqc_project_deltas;
1791 } userquota_cache_t;
1794 userquota_compare(const void *l, const void *r)
1796 const userquota_node_t *luqn = l;
1797 const userquota_node_t *ruqn = r;
1801 * NB: can only access uqn_id because userquota_update_cache() doesn't
1802 * pass in an entire userquota_node_t.
1804 rv = strcmp(luqn->uqn_id, ruqn->uqn_id);
1806 return (TREE_ISIGN(rv));
1810 do_userquota_cacheflush(objset_t *os, userquota_cache_t *cache, dmu_tx_t *tx)
1813 userquota_node_t *uqn;
1815 ASSERT(dmu_tx_is_syncing(tx));
1818 while ((uqn = avl_destroy_nodes(&cache->uqc_user_deltas,
1819 &cookie)) != NULL) {
1821 * os_userused_lock protects against concurrent calls to
1822 * zap_increment_int(). It's needed because zap_increment_int()
1823 * is not thread-safe (i.e. not atomic).
1825 mutex_enter(&os->os_userused_lock);
1826 VERIFY0(zap_increment(os, DMU_USERUSED_OBJECT,
1827 uqn->uqn_id, uqn->uqn_delta, tx));
1828 mutex_exit(&os->os_userused_lock);
1829 kmem_free(uqn, sizeof (*uqn));
1831 avl_destroy(&cache->uqc_user_deltas);
1834 while ((uqn = avl_destroy_nodes(&cache->uqc_group_deltas,
1835 &cookie)) != NULL) {
1836 mutex_enter(&os->os_userused_lock);
1837 VERIFY0(zap_increment(os, DMU_GROUPUSED_OBJECT,
1838 uqn->uqn_id, uqn->uqn_delta, tx));
1839 mutex_exit(&os->os_userused_lock);
1840 kmem_free(uqn, sizeof (*uqn));
1842 avl_destroy(&cache->uqc_group_deltas);
1844 if (dmu_objset_projectquota_enabled(os)) {
1846 while ((uqn = avl_destroy_nodes(&cache->uqc_project_deltas,
1847 &cookie)) != NULL) {
1848 mutex_enter(&os->os_userused_lock);
1849 VERIFY0(zap_increment(os, DMU_PROJECTUSED_OBJECT,
1850 uqn->uqn_id, uqn->uqn_delta, tx));
1851 mutex_exit(&os->os_userused_lock);
1852 kmem_free(uqn, sizeof (*uqn));
1854 avl_destroy(&cache->uqc_project_deltas);
1859 userquota_update_cache(avl_tree_t *avl, const char *id, int64_t delta)
1861 userquota_node_t *uqn;
1864 ASSERT(strlen(id) < sizeof (uqn->uqn_id));
1866 * Use id directly for searching because uqn_id is the first field of
1867 * userquota_node_t and fields after uqn_id won't be accessed in
1870 uqn = avl_find(avl, (const void *)id, &idx);
1872 uqn = kmem_zalloc(sizeof (*uqn), KM_SLEEP);
1873 strlcpy(uqn->uqn_id, id, sizeof (uqn->uqn_id));
1874 avl_insert(avl, uqn, idx);
1876 uqn->uqn_delta += delta;
1880 do_userquota_update(objset_t *os, userquota_cache_t *cache, uint64_t used,
1881 uint64_t flags, uint64_t user, uint64_t group, uint64_t project,
1884 if (flags & DNODE_FLAG_USERUSED_ACCOUNTED) {
1885 int64_t delta = DNODE_MIN_SIZE + used;
1891 (void) snprintf(name, sizeof (name), "%llx", (longlong_t)user);
1892 userquota_update_cache(&cache->uqc_user_deltas, name, delta);
1894 (void) snprintf(name, sizeof (name), "%llx", (longlong_t)group);
1895 userquota_update_cache(&cache->uqc_group_deltas, name, delta);
1897 if (dmu_objset_projectquota_enabled(os)) {
1898 (void) snprintf(name, sizeof (name), "%llx",
1899 (longlong_t)project);
1900 userquota_update_cache(&cache->uqc_project_deltas,
1907 do_userobjquota_update(objset_t *os, userquota_cache_t *cache, uint64_t flags,
1908 uint64_t user, uint64_t group, uint64_t project, boolean_t subtract)
1910 if (flags & DNODE_FLAG_USEROBJUSED_ACCOUNTED) {
1911 char name[20 + DMU_OBJACCT_PREFIX_LEN];
1912 int delta = subtract ? -1 : 1;
1914 (void) snprintf(name, sizeof (name), DMU_OBJACCT_PREFIX "%llx",
1916 userquota_update_cache(&cache->uqc_user_deltas, name, delta);
1918 (void) snprintf(name, sizeof (name), DMU_OBJACCT_PREFIX "%llx",
1920 userquota_update_cache(&cache->uqc_group_deltas, name, delta);
1922 if (dmu_objset_projectquota_enabled(os)) {
1923 (void) snprintf(name, sizeof (name),
1924 DMU_OBJACCT_PREFIX "%llx", (longlong_t)project);
1925 userquota_update_cache(&cache->uqc_project_deltas,
1931 typedef struct userquota_updates_arg {
1933 int uua_sublist_idx;
1935 } userquota_updates_arg_t;
1938 userquota_updates_task(void *arg)
1940 userquota_updates_arg_t *uua = arg;
1941 objset_t *os = uua->uua_os;
1942 dmu_tx_t *tx = uua->uua_tx;
1944 userquota_cache_t cache = { { 0 } };
1946 multilist_sublist_t *list =
1947 multilist_sublist_lock(os->os_synced_dnodes, uua->uua_sublist_idx);
1949 ASSERT(multilist_sublist_head(list) == NULL ||
1950 dmu_objset_userused_enabled(os));
1951 avl_create(&cache.uqc_user_deltas, userquota_compare,
1952 sizeof (userquota_node_t), offsetof(userquota_node_t, uqn_node));
1953 avl_create(&cache.uqc_group_deltas, userquota_compare,
1954 sizeof (userquota_node_t), offsetof(userquota_node_t, uqn_node));
1955 if (dmu_objset_projectquota_enabled(os))
1956 avl_create(&cache.uqc_project_deltas, userquota_compare,
1957 sizeof (userquota_node_t), offsetof(userquota_node_t,
1960 while ((dn = multilist_sublist_head(list)) != NULL) {
1962 ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object));
1963 ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE ||
1964 dn->dn_phys->dn_flags &
1965 DNODE_FLAG_USERUSED_ACCOUNTED);
1967 flags = dn->dn_id_flags;
1969 if (flags & DN_ID_OLD_EXIST) {
1970 do_userquota_update(os, &cache, dn->dn_oldused,
1971 dn->dn_oldflags, dn->dn_olduid, dn->dn_oldgid,
1972 dn->dn_oldprojid, B_TRUE);
1973 do_userobjquota_update(os, &cache, dn->dn_oldflags,
1974 dn->dn_olduid, dn->dn_oldgid,
1975 dn->dn_oldprojid, B_TRUE);
1977 if (flags & DN_ID_NEW_EXIST) {
1978 do_userquota_update(os, &cache,
1979 DN_USED_BYTES(dn->dn_phys), dn->dn_phys->dn_flags,
1980 dn->dn_newuid, dn->dn_newgid,
1981 dn->dn_newprojid, B_FALSE);
1982 do_userobjquota_update(os, &cache,
1983 dn->dn_phys->dn_flags, dn->dn_newuid, dn->dn_newgid,
1984 dn->dn_newprojid, B_FALSE);
1987 mutex_enter(&dn->dn_mtx);
1989 dn->dn_oldflags = 0;
1990 if (dn->dn_id_flags & DN_ID_NEW_EXIST) {
1991 dn->dn_olduid = dn->dn_newuid;
1992 dn->dn_oldgid = dn->dn_newgid;
1993 dn->dn_oldprojid = dn->dn_newprojid;
1994 dn->dn_id_flags |= DN_ID_OLD_EXIST;
1995 if (dn->dn_bonuslen == 0)
1996 dn->dn_id_flags |= DN_ID_CHKED_SPILL;
1998 dn->dn_id_flags |= DN_ID_CHKED_BONUS;
2000 dn->dn_id_flags &= ~(DN_ID_NEW_EXIST);
2001 if (dn->dn_dirty_txg == spa_syncing_txg(os->os_spa))
2002 dn->dn_dirty_txg = 0;
2003 mutex_exit(&dn->dn_mtx);
2005 multilist_sublist_remove(list, dn);
2006 dnode_rele(dn, os->os_synced_dnodes);
2008 do_userquota_cacheflush(os, &cache, tx);
2009 multilist_sublist_unlock(list);
2010 kmem_free(uua, sizeof (*uua));
2014 dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx)
2018 if (!dmu_objset_userused_enabled(os))
2022 * If this is a raw receive just return and handle accounting
2023 * later when we have the keys loaded. We also don't do user
2024 * accounting during claiming since the datasets are not owned
2025 * for the duration of claiming and this txg should only be
2026 * used for recovery.
2028 if (os->os_encrypted && dmu_objset_is_receiving(os))
2031 if (tx->tx_txg <= os->os_spa->spa_claim_max_txg)
2034 /* Allocate the user/group/project used objects if necessary. */
2035 if (DMU_USERUSED_DNODE(os)->dn_type == DMU_OT_NONE) {
2036 VERIFY0(zap_create_claim(os,
2037 DMU_USERUSED_OBJECT,
2038 DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx));
2039 VERIFY0(zap_create_claim(os,
2040 DMU_GROUPUSED_OBJECT,
2041 DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx));
2044 if (dmu_objset_projectquota_enabled(os) &&
2045 DMU_PROJECTUSED_DNODE(os)->dn_type == DMU_OT_NONE) {
2046 VERIFY0(zap_create_claim(os, DMU_PROJECTUSED_OBJECT,
2047 DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx));
2050 num_sublists = multilist_get_num_sublists(os->os_synced_dnodes);
2051 for (int i = 0; i < num_sublists; i++) {
2052 if (multilist_sublist_is_empty_idx(os->os_synced_dnodes, i))
2054 userquota_updates_arg_t *uua =
2055 kmem_alloc(sizeof (*uua), KM_SLEEP);
2057 uua->uua_sublist_idx = i;
2059 /* note: caller does taskq_wait() */
2060 (void) taskq_dispatch(dmu_objset_pool(os)->dp_sync_taskq,
2061 userquota_updates_task, uua, 0);
2062 /* callback frees uua */
2067 * Returns a pointer to data to find uid/gid from
2069 * If a dirty record for transaction group that is syncing can't
2070 * be found then NULL is returned. In the NULL case it is assumed
2071 * the uid/gid aren't changing.
2074 dmu_objset_userquota_find_data(dmu_buf_impl_t *db, dmu_tx_t *tx)
2076 dbuf_dirty_record_t *dr;
2079 if (db->db_dirtycnt == 0)
2080 return (db->db.db_data); /* Nothing is changing */
2082 dr = dbuf_find_dirty_eq(db, tx->tx_txg);
2089 DB_DNODE_ENTER(dr->dr_dbuf);
2090 dn = DB_DNODE(dr->dr_dbuf);
2092 if (dn->dn_bonuslen == 0 &&
2093 dr->dr_dbuf->db_blkid == DMU_SPILL_BLKID)
2094 data = dr->dt.dl.dr_data->b_data;
2096 data = dr->dt.dl.dr_data;
2098 DB_DNODE_EXIT(dr->dr_dbuf);
2105 dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx)
2107 objset_t *os = dn->dn_objset;
2109 dmu_buf_impl_t *db = NULL;
2110 int flags = dn->dn_id_flags;
2112 boolean_t have_spill = B_FALSE;
2114 if (!dmu_objset_userused_enabled(dn->dn_objset))
2118 * Raw receives introduce a problem with user accounting. Raw
2119 * receives cannot update the user accounting info because the
2120 * user ids and the sizes are encrypted. To guarantee that we
2121 * never end up with bad user accounting, we simply disable it
2122 * during raw receives. We also disable this for normal receives
2123 * so that an incremental raw receive may be done on top of an
2124 * existing non-raw receive.
2126 if (os->os_encrypted && dmu_objset_is_receiving(os))
2129 if (before && (flags & (DN_ID_CHKED_BONUS|DN_ID_OLD_EXIST|
2130 DN_ID_CHKED_SPILL)))
2133 if (before && dn->dn_bonuslen != 0)
2134 data = DN_BONUS(dn->dn_phys);
2135 else if (!before && dn->dn_bonuslen != 0) {
2138 mutex_enter(&db->db_mtx);
2139 data = dmu_objset_userquota_find_data(db, tx);
2141 data = DN_BONUS(dn->dn_phys);
2143 } else if (dn->dn_bonuslen == 0 && dn->dn_bonustype == DMU_OT_SA) {
2146 if (RW_WRITE_HELD(&dn->dn_struct_rwlock))
2147 rf |= DB_RF_HAVESTRUCT;
2148 error = dmu_spill_hold_by_dnode(dn,
2149 rf | DB_RF_MUST_SUCCEED,
2150 FTAG, (dmu_buf_t **)&db);
2152 mutex_enter(&db->db_mtx);
2153 data = (before) ? db->db.db_data :
2154 dmu_objset_userquota_find_data(db, tx);
2155 have_spill = B_TRUE;
2157 mutex_enter(&dn->dn_mtx);
2158 dn->dn_id_flags |= DN_ID_CHKED_BONUS;
2159 mutex_exit(&dn->dn_mtx);
2164 * Must always call the callback in case the object
2165 * type has changed and that type isn't an object type to track
2167 zfs_file_info_t zfi;
2168 error = file_cbs[os->os_phys->os_type](dn->dn_bonustype, data, &zfi);
2172 dn->dn_olduid = zfi.zfi_user;
2173 dn->dn_oldgid = zfi.zfi_group;
2174 dn->dn_oldprojid = zfi.zfi_project;
2176 dn->dn_newuid = zfi.zfi_user;
2177 dn->dn_newgid = zfi.zfi_group;
2178 dn->dn_newprojid = zfi.zfi_project;
2182 * Preserve existing uid/gid when the callback can't determine
2183 * what the new uid/gid are and the callback returned EEXIST.
2184 * The EEXIST error tells us to just use the existing uid/gid.
2185 * If we don't know what the old values are then just assign
2186 * them to 0, since that is a new file being created.
2188 if (!before && data == NULL && error == EEXIST) {
2189 if (flags & DN_ID_OLD_EXIST) {
2190 dn->dn_newuid = dn->dn_olduid;
2191 dn->dn_newgid = dn->dn_oldgid;
2192 dn->dn_newprojid = dn->dn_oldprojid;
2196 dn->dn_newprojid = ZFS_DEFAULT_PROJID;
2202 mutex_exit(&db->db_mtx);
2204 mutex_enter(&dn->dn_mtx);
2205 if (error == 0 && before)
2206 dn->dn_id_flags |= DN_ID_OLD_EXIST;
2207 if (error == 0 && !before)
2208 dn->dn_id_flags |= DN_ID_NEW_EXIST;
2211 dn->dn_id_flags |= DN_ID_CHKED_SPILL;
2213 dn->dn_id_flags |= DN_ID_CHKED_BONUS;
2215 mutex_exit(&dn->dn_mtx);
2217 dmu_buf_rele((dmu_buf_t *)db, FTAG);
2221 dmu_objset_userspace_present(objset_t *os)
2223 return (os->os_phys->os_flags &
2224 OBJSET_FLAG_USERACCOUNTING_COMPLETE);
2228 dmu_objset_userobjspace_present(objset_t *os)
2230 return (os->os_phys->os_flags &
2231 OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE);
2235 dmu_objset_projectquota_present(objset_t *os)
2237 return (os->os_phys->os_flags &
2238 OBJSET_FLAG_PROJECTQUOTA_COMPLETE);
2242 dmu_objset_space_upgrade(objset_t *os)
2248 * We simply need to mark every object dirty, so that it will be
2249 * synced out and now accounted. If this is called
2250 * concurrently, or if we already did some work before crashing,
2251 * that's fine, since we track each object's accounted state
2255 for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) {
2260 mutex_enter(&os->os_upgrade_lock);
2261 if (os->os_upgrade_exit)
2262 err = SET_ERROR(EINTR);
2263 mutex_exit(&os->os_upgrade_lock);
2267 if (issig(JUSTLOOKING) && issig(FORREAL))
2268 return (SET_ERROR(EINTR));
2270 objerr = dmu_bonus_hold(os, obj, FTAG, &db);
2273 tx = dmu_tx_create(os);
2274 dmu_tx_hold_bonus(tx, obj);
2275 objerr = dmu_tx_assign(tx, TXG_WAIT);
2277 dmu_buf_rele(db, FTAG);
2281 dmu_buf_will_dirty(db, tx);
2282 dmu_buf_rele(db, FTAG);
2289 dmu_objset_userspace_upgrade(objset_t *os)
2293 if (dmu_objset_userspace_present(os))
2295 if (dmu_objset_is_snapshot(os))
2296 return (SET_ERROR(EINVAL));
2297 if (!dmu_objset_userused_enabled(os))
2298 return (SET_ERROR(ENOTSUP));
2300 err = dmu_objset_space_upgrade(os);
2304 os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE;
2305 txg_wait_synced(dmu_objset_pool(os), 0);
2310 dmu_objset_id_quota_upgrade_cb(objset_t *os)
2314 if (dmu_objset_userobjspace_present(os) &&
2315 dmu_objset_projectquota_present(os))
2317 if (dmu_objset_is_snapshot(os))
2318 return (SET_ERROR(EINVAL));
2319 if (!dmu_objset_userobjused_enabled(os))
2320 return (SET_ERROR(ENOTSUP));
2321 if (!dmu_objset_projectquota_enabled(os) &&
2322 dmu_objset_userobjspace_present(os))
2323 return (SET_ERROR(ENOTSUP));
2325 dmu_objset_ds(os)->ds_feature_activation[
2326 SPA_FEATURE_USEROBJ_ACCOUNTING] = (void *)B_TRUE;
2327 if (dmu_objset_projectquota_enabled(os))
2328 dmu_objset_ds(os)->ds_feature_activation[
2329 SPA_FEATURE_PROJECT_QUOTA] = (void *)B_TRUE;
2331 err = dmu_objset_space_upgrade(os);
2335 os->os_flags |= OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE;
2336 if (dmu_objset_projectquota_enabled(os))
2337 os->os_flags |= OBJSET_FLAG_PROJECTQUOTA_COMPLETE;
2339 txg_wait_synced(dmu_objset_pool(os), 0);
2344 dmu_objset_id_quota_upgrade(objset_t *os)
2346 dmu_objset_upgrade(os, dmu_objset_id_quota_upgrade_cb);
2350 dmu_objset_userobjspace_upgradable(objset_t *os)
2352 return (dmu_objset_type(os) == DMU_OST_ZFS &&
2353 !dmu_objset_is_snapshot(os) &&
2354 dmu_objset_userobjused_enabled(os) &&
2355 !dmu_objset_userobjspace_present(os) &&
2356 spa_writeable(dmu_objset_spa(os)));
2360 dmu_objset_projectquota_upgradable(objset_t *os)
2362 return (dmu_objset_type(os) == DMU_OST_ZFS &&
2363 !dmu_objset_is_snapshot(os) &&
2364 dmu_objset_projectquota_enabled(os) &&
2365 !dmu_objset_projectquota_present(os) &&
2366 spa_writeable(dmu_objset_spa(os)));
2370 dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
2371 uint64_t *usedobjsp, uint64_t *availobjsp)
2373 dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp,
2374 usedobjsp, availobjsp);
2378 dmu_objset_fsid_guid(objset_t *os)
2380 return (dsl_dataset_fsid_guid(os->os_dsl_dataset));
2384 dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat)
2386 stat->dds_type = os->os_phys->os_type;
2387 if (os->os_dsl_dataset)
2388 dsl_dataset_fast_stat(os->os_dsl_dataset, stat);
2392 dmu_objset_stats(objset_t *os, nvlist_t *nv)
2394 ASSERT(os->os_dsl_dataset ||
2395 os->os_phys->os_type == DMU_OST_META);
2397 if (os->os_dsl_dataset != NULL)
2398 dsl_dataset_stats(os->os_dsl_dataset, nv);
2400 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE,
2401 os->os_phys->os_type);
2402 dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING,
2403 dmu_objset_userspace_present(os));
2407 dmu_objset_is_snapshot(objset_t *os)
2409 if (os->os_dsl_dataset != NULL)
2410 return (os->os_dsl_dataset->ds_is_snapshot);
2416 dmu_snapshot_realname(objset_t *os, const char *name, char *real, int maxlen,
2417 boolean_t *conflict)
2419 dsl_dataset_t *ds = os->os_dsl_dataset;
2422 if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0)
2423 return (SET_ERROR(ENOENT));
2425 return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset,
2426 dsl_dataset_phys(ds)->ds_snapnames_zapobj, name, 8, 1, &ignored,
2427 MT_NORMALIZE, real, maxlen, conflict));
2431 dmu_snapshot_list_next(objset_t *os, int namelen, char *name,
2432 uint64_t *idp, uint64_t *offp, boolean_t *case_conflict)
2434 dsl_dataset_t *ds = os->os_dsl_dataset;
2435 zap_cursor_t cursor;
2436 zap_attribute_t attr;
2438 ASSERT(dsl_pool_config_held(dmu_objset_pool(os)));
2440 if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0)
2441 return (SET_ERROR(ENOENT));
2443 zap_cursor_init_serialized(&cursor,
2444 ds->ds_dir->dd_pool->dp_meta_objset,
2445 dsl_dataset_phys(ds)->ds_snapnames_zapobj, *offp);
2447 if (zap_cursor_retrieve(&cursor, &attr) != 0) {
2448 zap_cursor_fini(&cursor);
2449 return (SET_ERROR(ENOENT));
2452 if (strlen(attr.za_name) + 1 > namelen) {
2453 zap_cursor_fini(&cursor);
2454 return (SET_ERROR(ENAMETOOLONG));
2457 (void) strlcpy(name, attr.za_name, namelen);
2459 *idp = attr.za_first_integer;
2461 *case_conflict = attr.za_normalization_conflict;
2462 zap_cursor_advance(&cursor);
2463 *offp = zap_cursor_serialize(&cursor);
2464 zap_cursor_fini(&cursor);
2470 dmu_snapshot_lookup(objset_t *os, const char *name, uint64_t *value)
2472 return (dsl_dataset_snap_lookup(os->os_dsl_dataset, name, value));
2476 dmu_dir_list_next(objset_t *os, int namelen, char *name,
2477 uint64_t *idp, uint64_t *offp)
2479 dsl_dir_t *dd = os->os_dsl_dataset->ds_dir;
2480 zap_cursor_t cursor;
2481 zap_attribute_t attr;
2483 /* there is no next dir on a snapshot! */
2484 if (os->os_dsl_dataset->ds_object !=
2485 dsl_dir_phys(dd)->dd_head_dataset_obj)
2486 return (SET_ERROR(ENOENT));
2488 zap_cursor_init_serialized(&cursor,
2489 dd->dd_pool->dp_meta_objset,
2490 dsl_dir_phys(dd)->dd_child_dir_zapobj, *offp);
2492 if (zap_cursor_retrieve(&cursor, &attr) != 0) {
2493 zap_cursor_fini(&cursor);
2494 return (SET_ERROR(ENOENT));
2497 if (strlen(attr.za_name) + 1 > namelen) {
2498 zap_cursor_fini(&cursor);
2499 return (SET_ERROR(ENAMETOOLONG));
2502 (void) strlcpy(name, attr.za_name, namelen);
2504 *idp = attr.za_first_integer;
2505 zap_cursor_advance(&cursor);
2506 *offp = zap_cursor_serialize(&cursor);
2507 zap_cursor_fini(&cursor);
2512 typedef struct dmu_objset_find_ctx {
2516 char *dc_ddname; /* last component of ddobj's name */
2517 int (*dc_func)(dsl_pool_t *, dsl_dataset_t *, void *);
2520 kmutex_t *dc_error_lock;
2522 } dmu_objset_find_ctx_t;
2525 dmu_objset_find_dp_impl(dmu_objset_find_ctx_t *dcp)
2527 dsl_pool_t *dp = dcp->dc_dp;
2531 zap_attribute_t *attr;
2535 /* don't process if there already was an error */
2536 if (*dcp->dc_error != 0)
2540 * Note: passing the name (dc_ddname) here is optional, but it
2541 * improves performance because we don't need to call
2542 * zap_value_search() to determine the name.
2544 err = dsl_dir_hold_obj(dp, dcp->dc_ddobj, dcp->dc_ddname, FTAG, &dd);
2548 /* Don't visit hidden ($MOS & $ORIGIN) objsets. */
2549 if (dd->dd_myname[0] == '$') {
2550 dsl_dir_rele(dd, FTAG);
2554 thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj;
2555 attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
2558 * Iterate over all children.
2560 if (dcp->dc_flags & DS_FIND_CHILDREN) {
2561 for (zap_cursor_init(&zc, dp->dp_meta_objset,
2562 dsl_dir_phys(dd)->dd_child_dir_zapobj);
2563 zap_cursor_retrieve(&zc, attr) == 0;
2564 (void) zap_cursor_advance(&zc)) {
2565 ASSERT3U(attr->za_integer_length, ==,
2567 ASSERT3U(attr->za_num_integers, ==, 1);
2569 dmu_objset_find_ctx_t *child_dcp =
2570 kmem_alloc(sizeof (*child_dcp), KM_SLEEP);
2572 child_dcp->dc_ddobj = attr->za_first_integer;
2573 child_dcp->dc_ddname = spa_strdup(attr->za_name);
2574 if (dcp->dc_tq != NULL)
2575 (void) taskq_dispatch(dcp->dc_tq,
2576 dmu_objset_find_dp_cb, child_dcp, TQ_SLEEP);
2578 dmu_objset_find_dp_impl(child_dcp);
2580 zap_cursor_fini(&zc);
2584 * Iterate over all snapshots.
2586 if (dcp->dc_flags & DS_FIND_SNAPSHOTS) {
2588 err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds);
2593 snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj;
2594 dsl_dataset_rele(ds, FTAG);
2596 for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj);
2597 zap_cursor_retrieve(&zc, attr) == 0;
2598 (void) zap_cursor_advance(&zc)) {
2599 ASSERT3U(attr->za_integer_length, ==,
2601 ASSERT3U(attr->za_num_integers, ==, 1);
2603 err = dsl_dataset_hold_obj(dp,
2604 attr->za_first_integer, FTAG, &ds);
2607 err = dcp->dc_func(dp, ds, dcp->dc_arg);
2608 dsl_dataset_rele(ds, FTAG);
2612 zap_cursor_fini(&zc);
2616 kmem_free(attr, sizeof (zap_attribute_t));
2619 dsl_dir_rele(dd, FTAG);
2626 err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds);
2629 * Note: we hold the dir while calling dsl_dataset_hold_obj() so
2630 * that the dir will remain cached, and we won't have to re-instantiate
2631 * it (which could be expensive due to finding its name via
2632 * zap_value_search()).
2634 dsl_dir_rele(dd, FTAG);
2637 err = dcp->dc_func(dp, ds, dcp->dc_arg);
2638 dsl_dataset_rele(ds, FTAG);
2642 mutex_enter(dcp->dc_error_lock);
2643 /* only keep first error */
2644 if (*dcp->dc_error == 0)
2645 *dcp->dc_error = err;
2646 mutex_exit(dcp->dc_error_lock);
2649 if (dcp->dc_ddname != NULL)
2650 spa_strfree(dcp->dc_ddname);
2651 kmem_free(dcp, sizeof (*dcp));
2655 dmu_objset_find_dp_cb(void *arg)
2657 dmu_objset_find_ctx_t *dcp = arg;
2658 dsl_pool_t *dp = dcp->dc_dp;
2661 * We need to get a pool_config_lock here, as there are several
2662 * assert(pool_config_held) down the stack. Getting a lock via
2663 * dsl_pool_config_enter is risky, as it might be stalled by a
2664 * pending writer. This would deadlock, as the write lock can
2665 * only be granted when our parent thread gives up the lock.
2666 * The _prio interface gives us priority over a pending writer.
2668 dsl_pool_config_enter_prio(dp, FTAG);
2670 dmu_objset_find_dp_impl(dcp);
2672 dsl_pool_config_exit(dp, FTAG);
2676 * Find objsets under and including ddobj, call func(ds) on each.
2677 * The order for the enumeration is completely undefined.
2678 * func is called with dsl_pool_config held.
2681 dmu_objset_find_dp(dsl_pool_t *dp, uint64_t ddobj,
2682 int func(dsl_pool_t *, dsl_dataset_t *, void *), void *arg, int flags)
2687 dmu_objset_find_ctx_t *dcp;
2690 mutex_init(&err_lock, NULL, MUTEX_DEFAULT, NULL);
2691 dcp = kmem_alloc(sizeof (*dcp), KM_SLEEP);
2694 dcp->dc_ddobj = ddobj;
2695 dcp->dc_ddname = NULL;
2696 dcp->dc_func = func;
2698 dcp->dc_flags = flags;
2699 dcp->dc_error_lock = &err_lock;
2700 dcp->dc_error = &error;
2702 if ((flags & DS_FIND_SERIALIZE) || dsl_pool_config_held_writer(dp)) {
2704 * In case a write lock is held we can't make use of
2705 * parallelism, as down the stack of the worker threads
2706 * the lock is asserted via dsl_pool_config_held.
2707 * In case of a read lock this is solved by getting a read
2708 * lock in each worker thread, which isn't possible in case
2709 * of a writer lock. So we fall back to the synchronous path
2711 * In the future it might be possible to get some magic into
2712 * dsl_pool_config_held in a way that it returns true for
2713 * the worker threads so that a single lock held from this
2714 * thread suffices. For now, stay single threaded.
2716 dmu_objset_find_dp_impl(dcp);
2717 mutex_destroy(&err_lock);
2722 ntasks = dmu_find_threads;
2724 ntasks = vdev_count_leaves(dp->dp_spa) * 4;
2725 tq = taskq_create("dmu_objset_find", ntasks, maxclsyspri, ntasks,
2728 kmem_free(dcp, sizeof (*dcp));
2729 mutex_destroy(&err_lock);
2731 return (SET_ERROR(ENOMEM));
2735 /* dcp will be freed by task */
2736 (void) taskq_dispatch(tq, dmu_objset_find_dp_cb, dcp, TQ_SLEEP);
2739 * PORTING: this code relies on the property of taskq_wait to wait
2740 * until no more tasks are queued and no more tasks are active. As
2741 * we always queue new tasks from within other tasks, task_wait
2742 * reliably waits for the full recursion to finish, even though we
2743 * enqueue new tasks after taskq_wait has been called.
2744 * On platforms other than illumos, taskq_wait may not have this
2749 mutex_destroy(&err_lock);
2755 * Find all objsets under name, and for each, call 'func(child_name, arg)'.
2756 * The dp_config_rwlock must not be held when this is called, and it
2757 * will not be held when the callback is called.
2758 * Therefore this function should only be used when the pool is not changing
2759 * (e.g. in syncing context), or the callback can deal with the possible races.
2762 dmu_objset_find_impl(spa_t *spa, const char *name,
2763 int func(const char *, void *), void *arg, int flags)
2766 dsl_pool_t *dp = spa_get_dsl(spa);
2769 zap_attribute_t *attr;
2774 dsl_pool_config_enter(dp, FTAG);
2776 err = dsl_dir_hold(dp, name, FTAG, &dd, NULL);
2778 dsl_pool_config_exit(dp, FTAG);
2782 /* Don't visit hidden ($MOS & $ORIGIN) objsets. */
2783 if (dd->dd_myname[0] == '$') {
2784 dsl_dir_rele(dd, FTAG);
2785 dsl_pool_config_exit(dp, FTAG);
2789 thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj;
2790 attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
2793 * Iterate over all children.
2795 if (flags & DS_FIND_CHILDREN) {
2796 for (zap_cursor_init(&zc, dp->dp_meta_objset,
2797 dsl_dir_phys(dd)->dd_child_dir_zapobj);
2798 zap_cursor_retrieve(&zc, attr) == 0;
2799 (void) zap_cursor_advance(&zc)) {
2800 ASSERT3U(attr->za_integer_length, ==,
2802 ASSERT3U(attr->za_num_integers, ==, 1);
2804 child = kmem_asprintf("%s/%s", name, attr->za_name);
2805 dsl_pool_config_exit(dp, FTAG);
2806 err = dmu_objset_find_impl(spa, child,
2808 dsl_pool_config_enter(dp, FTAG);
2809 kmem_strfree(child);
2813 zap_cursor_fini(&zc);
2816 dsl_dir_rele(dd, FTAG);
2817 dsl_pool_config_exit(dp, FTAG);
2818 kmem_free(attr, sizeof (zap_attribute_t));
2824 * Iterate over all snapshots.
2826 if (flags & DS_FIND_SNAPSHOTS) {
2827 err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds);
2832 snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj;
2833 dsl_dataset_rele(ds, FTAG);
2835 for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj);
2836 zap_cursor_retrieve(&zc, attr) == 0;
2837 (void) zap_cursor_advance(&zc)) {
2838 ASSERT3U(attr->za_integer_length, ==,
2840 ASSERT3U(attr->za_num_integers, ==, 1);
2842 child = kmem_asprintf("%s@%s",
2843 name, attr->za_name);
2844 dsl_pool_config_exit(dp, FTAG);
2845 err = func(child, arg);
2846 dsl_pool_config_enter(dp, FTAG);
2847 kmem_strfree(child);
2851 zap_cursor_fini(&zc);
2855 dsl_dir_rele(dd, FTAG);
2856 kmem_free(attr, sizeof (zap_attribute_t));
2857 dsl_pool_config_exit(dp, FTAG);
2862 /* Apply to self. */
2863 return (func(name, arg));
2867 * See comment above dmu_objset_find_impl().
2870 dmu_objset_find(const char *name, int func(const char *, void *), void *arg,
2876 error = spa_open(name, &spa, FTAG);
2879 error = dmu_objset_find_impl(spa, name, func, arg, flags);
2880 spa_close(spa, FTAG);
2885 dmu_objset_incompatible_encryption_version(objset_t *os)
2887 return (dsl_dir_incompatible_encryption_version(
2888 os->os_dsl_dataset->ds_dir));
2892 dmu_objset_set_user(objset_t *os, void *user_ptr)
2894 ASSERT(MUTEX_HELD(&os->os_user_ptr_lock));
2895 os->os_user_ptr = user_ptr;
2899 dmu_objset_get_user(objset_t *os)
2901 ASSERT(MUTEX_HELD(&os->os_user_ptr_lock));
2902 return (os->os_user_ptr);
2906 * Determine name of filesystem, given name of snapshot.
2907 * buf must be at least ZFS_MAX_DATASET_NAME_LEN bytes
2910 dmu_fsname(const char *snapname, char *buf)
2912 char *atp = strchr(snapname, '@');
2914 return (SET_ERROR(EINVAL));
2915 if (atp - snapname >= ZFS_MAX_DATASET_NAME_LEN)
2916 return (SET_ERROR(ENAMETOOLONG));
2917 (void) strlcpy(buf, snapname, atp - snapname + 1);
2922 * Call when we think we're going to write/free space in open context
2923 * to track the amount of dirty data in the open txg, which is also the
2924 * amount of memory that can not be evicted until this txg syncs.
2926 * Note that there are two conditions where this can be called from
2929 * [1] When we just created the dataset, in which case we go on with
2930 * updating any accounting of dirty data as usual.
2931 * [2] When we are dirtying MOS data, in which case we only update the
2932 * pool's accounting of dirty data.
2935 dmu_objset_willuse_space(objset_t *os, int64_t space, dmu_tx_t *tx)
2937 dsl_dataset_t *ds = os->os_dsl_dataset;
2938 int64_t aspace = spa_get_worst_case_asize(os->os_spa, space);
2941 dsl_dir_willuse_space(ds->ds_dir, aspace, tx);
2944 dsl_pool_dirty_space(dmu_tx_pool(tx), space, tx);
2947 #if defined(_KERNEL)
2948 EXPORT_SYMBOL(dmu_objset_zil);
2949 EXPORT_SYMBOL(dmu_objset_pool);
2950 EXPORT_SYMBOL(dmu_objset_ds);
2951 EXPORT_SYMBOL(dmu_objset_type);
2952 EXPORT_SYMBOL(dmu_objset_name);
2953 EXPORT_SYMBOL(dmu_objset_hold);
2954 EXPORT_SYMBOL(dmu_objset_hold_flags);
2955 EXPORT_SYMBOL(dmu_objset_own);
2956 EXPORT_SYMBOL(dmu_objset_rele);
2957 EXPORT_SYMBOL(dmu_objset_rele_flags);
2958 EXPORT_SYMBOL(dmu_objset_disown);
2959 EXPORT_SYMBOL(dmu_objset_from_ds);
2960 EXPORT_SYMBOL(dmu_objset_create);
2961 EXPORT_SYMBOL(dmu_objset_clone);
2962 EXPORT_SYMBOL(dmu_objset_stats);
2963 EXPORT_SYMBOL(dmu_objset_fast_stat);
2964 EXPORT_SYMBOL(dmu_objset_spa);
2965 EXPORT_SYMBOL(dmu_objset_space);
2966 EXPORT_SYMBOL(dmu_objset_fsid_guid);
2967 EXPORT_SYMBOL(dmu_objset_find);
2968 EXPORT_SYMBOL(dmu_objset_byteswap);
2969 EXPORT_SYMBOL(dmu_objset_evict_dbufs);
2970 EXPORT_SYMBOL(dmu_objset_snap_cmtime);
2971 EXPORT_SYMBOL(dmu_objset_dnodesize);
2973 EXPORT_SYMBOL(dmu_objset_sync);
2974 EXPORT_SYMBOL(dmu_objset_is_dirty);
2975 EXPORT_SYMBOL(dmu_objset_create_impl_dnstats);
2976 EXPORT_SYMBOL(dmu_objset_create_impl);
2977 EXPORT_SYMBOL(dmu_objset_open_impl);
2978 EXPORT_SYMBOL(dmu_objset_evict);
2979 EXPORT_SYMBOL(dmu_objset_register_type);
2980 EXPORT_SYMBOL(dmu_objset_do_userquota_updates);
2981 EXPORT_SYMBOL(dmu_objset_userquota_get_ids);
2982 EXPORT_SYMBOL(dmu_objset_userused_enabled);
2983 EXPORT_SYMBOL(dmu_objset_userspace_upgrade);
2984 EXPORT_SYMBOL(dmu_objset_userspace_present);
2985 EXPORT_SYMBOL(dmu_objset_userobjused_enabled);
2986 EXPORT_SYMBOL(dmu_objset_userobjspace_upgradable);
2987 EXPORT_SYMBOL(dmu_objset_userobjspace_present);
2988 EXPORT_SYMBOL(dmu_objset_projectquota_enabled);
2989 EXPORT_SYMBOL(dmu_objset_projectquota_present);
2990 EXPORT_SYMBOL(dmu_objset_projectquota_upgradable);
2991 EXPORT_SYMBOL(dmu_objset_id_quota_upgrade);