2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "xfs_trans.h"
26 #include "xfs_alloc.h"
27 #include "xfs_quota.h"
28 #include "xfs_mount.h"
29 #include "xfs_bmap_btree.h"
30 #include "xfs_ialloc_btree.h"
31 #include "xfs_dinode.h"
32 #include "xfs_inode.h"
33 #include "xfs_ialloc.h"
34 #include "xfs_itable.h"
35 #include "xfs_rtalloc.h"
36 #include "xfs_error.h"
39 #include "xfs_buf_item.h"
40 #include "xfs_trans_space.h"
41 #include "xfs_utils.h"
43 #include "xfs_trace.h"
46 * The global quota manager. There is only one of these for the entire
47 * system, _not_ one per file system. XQM keeps track of the overall
48 * quota functionality, including maintaining the freelist and hash
51 STATIC
int xfs_qm_init_quotainos(xfs_mount_t
*);
52 STATIC
int xfs_qm_init_quotainfo(xfs_mount_t
*);
53 STATIC
int xfs_qm_shake(struct shrinker
*, struct shrink_control
*);
56 * We use the batch lookup interface to iterate over the dquots as it
57 * currently is the only interface into the radix tree code that allows
58 * fuzzy lookups instead of exact matches. Holding the lock over multiple
59 * operations is fine as all callers are used either during mount/umount
62 #define XFS_DQ_LOOKUP_BATCH 32
68 int (*execute
)(struct xfs_dquot
*dqp
))
70 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
71 struct radix_tree_root
*tree
= XFS_DQUOT_TREE(qi
, type
);
83 struct xfs_dquot
*batch
[XFS_DQ_LOOKUP_BATCH
];
87 mutex_lock(&qi
->qi_tree_lock
);
88 nr_found
= radix_tree_gang_lookup(tree
, (void **)batch
,
89 next_index
, XFS_DQ_LOOKUP_BATCH
);
91 mutex_unlock(&qi
->qi_tree_lock
);
95 for (i
= 0; i
< nr_found
; i
++) {
96 struct xfs_dquot
*dqp
= batch
[i
];
98 next_index
= be32_to_cpu(dqp
->q_core
.d_id
) + 1;
100 error
= execute(batch
[i
]);
101 if (error
== EAGAIN
) {
105 if (error
&& last_error
!= EFSCORRUPTED
)
109 mutex_unlock(&qi
->qi_tree_lock
);
111 /* bail out if the filesystem is corrupted. */
112 if (last_error
== EFSCORRUPTED
) {
128 * Purge a dquot from all tracking data structures and free it.
132 struct xfs_dquot
*dqp
)
134 struct xfs_mount
*mp
= dqp
->q_mount
;
135 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
136 struct xfs_dquot
*gdqp
= NULL
;
139 if ((dqp
->dq_flags
& XFS_DQ_FREEING
) || dqp
->q_nrefs
!= 0) {
145 * If this quota has a group hint attached, prepare for releasing it
148 gdqp
= dqp
->q_gdquot
;
151 dqp
->q_gdquot
= NULL
;
154 dqp
->dq_flags
|= XFS_DQ_FREEING
;
157 * If we're turning off quotas, we have to make sure that, for
158 * example, we don't delete quota disk blocks while dquots are
159 * in the process of getting written to those disk blocks.
160 * This dquot might well be on AIL, and we can't leave it there
161 * if we're turning off quotas. Basically, we need this flush
162 * lock, and are willing to block on it.
164 if (!xfs_dqflock_nowait(dqp
)) {
166 * Block on the flush lock after nudging dquot buffer,
169 xfs_dqflock_pushbuf_wait(dqp
);
173 * If we are turning this type of quotas off, we don't care
174 * about the dirty metadata sitting in this dquot. OTOH, if
175 * we're unmounting, we do care, so we flush it and wait.
177 if (XFS_DQ_IS_DIRTY(dqp
)) {
181 * We don't care about getting disk errors here. We need
182 * to purge this dquot anyway, so we go ahead regardless.
184 error
= xfs_qm_dqflush(dqp
, SYNC_WAIT
);
186 xfs_warn(mp
, "%s: dquot %p flush failed",
191 ASSERT(atomic_read(&dqp
->q_pincount
) == 0);
192 ASSERT(XFS_FORCED_SHUTDOWN(mp
) ||
193 !(dqp
->q_logitem
.qli_item
.li_flags
& XFS_LI_IN_AIL
));
198 radix_tree_delete(XFS_DQUOT_TREE(qi
, dqp
->q_core
.d_flags
),
199 be32_to_cpu(dqp
->q_core
.d_id
));
203 * We move dquots to the freelist as soon as their reference count
204 * hits zero, so it really should be on the freelist here.
206 mutex_lock(&qi
->qi_lru_lock
);
207 ASSERT(!list_empty(&dqp
->q_lru
));
208 list_del_init(&dqp
->q_lru
);
210 XFS_STATS_DEC(xs_qm_dquot_unused
);
211 mutex_unlock(&qi
->qi_lru_lock
);
213 xfs_qm_dqdestroy(dqp
);
221 * Purge the dquot cache.
225 struct xfs_mount
*mp
,
228 if (flags
& XFS_QMOPT_UQUOTA
)
229 xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_dqpurge
);
230 if (flags
& XFS_QMOPT_GQUOTA
)
231 xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_dqpurge
);
232 if (flags
& XFS_QMOPT_PQUOTA
)
233 xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_dqpurge
);
237 * Just destroy the quotainfo structure.
241 struct xfs_mount
*mp
)
243 if (mp
->m_quotainfo
) {
244 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
245 xfs_qm_destroy_quotainfo(mp
);
251 * This is called from xfs_mountfs to start quotas and initialize all
252 * necessary data structures like quotainfo. This is also responsible for
253 * running a quotacheck as necessary. We are guaranteed that the superblock
254 * is consistently read in at this point.
256 * If we fail here, the mount will continue with quota turned off. We don't
257 * need to inidicate success or failure at all.
267 * If quotas on realtime volumes is not supported, we disable
268 * quotas immediately.
270 if (mp
->m_sb
.sb_rextents
) {
271 xfs_notice(mp
, "Cannot turn on quotas for realtime filesystem");
276 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
279 * Allocate the quotainfo structure inside the mount struct, and
280 * create quotainode(s), and change/rev superblock if necessary.
282 error
= xfs_qm_init_quotainfo(mp
);
285 * We must turn off quotas.
287 ASSERT(mp
->m_quotainfo
== NULL
);
292 * If any of the quotas are not consistent, do a quotacheck.
294 if (XFS_QM_NEED_QUOTACHECK(mp
)) {
295 error
= xfs_qm_quotacheck(mp
);
297 /* Quotacheck failed and disabled quotas. */
302 * If one type of quotas is off, then it will lose its
303 * quotachecked status, since we won't be doing accounting for
306 if (!XFS_IS_UQUOTA_ON(mp
))
307 mp
->m_qflags
&= ~XFS_UQUOTA_CHKD
;
308 if (!(XFS_IS_GQUOTA_ON(mp
) || XFS_IS_PQUOTA_ON(mp
)))
309 mp
->m_qflags
&= ~XFS_OQUOTA_CHKD
;
313 * We actually don't have to acquire the m_sb_lock at all.
314 * This can only be called from mount, and that's single threaded. XXX
316 spin_lock(&mp
->m_sb_lock
);
317 sbf
= mp
->m_sb
.sb_qflags
;
318 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
;
319 spin_unlock(&mp
->m_sb_lock
);
321 if (sbf
!= (mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
)) {
322 if (xfs_qm_write_sb_changes(mp
, XFS_SB_QFLAGS
)) {
324 * We could only have been turning quotas off.
325 * We aren't in very good shape actually because
326 * the incore structures are convinced that quotas are
327 * off, but the on disk superblock doesn't know that !
329 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp
)));
330 xfs_alert(mp
, "%s: Superblock update failed!",
336 xfs_warn(mp
, "Failed to initialize disk quotas.");
342 * Called from the vfsops layer.
345 xfs_qm_unmount_quotas(
349 * Release the dquots that root inode, et al might be holding,
350 * before we flush quotas and blow away the quotainfo structure.
352 ASSERT(mp
->m_rootip
);
353 xfs_qm_dqdetach(mp
->m_rootip
);
355 xfs_qm_dqdetach(mp
->m_rbmip
);
357 xfs_qm_dqdetach(mp
->m_rsumip
);
360 * Release the quota inodes.
362 if (mp
->m_quotainfo
) {
363 if (mp
->m_quotainfo
->qi_uquotaip
) {
364 IRELE(mp
->m_quotainfo
->qi_uquotaip
);
365 mp
->m_quotainfo
->qi_uquotaip
= NULL
;
367 if (mp
->m_quotainfo
->qi_gquotaip
) {
368 IRELE(mp
->m_quotainfo
->qi_gquotaip
);
369 mp
->m_quotainfo
->qi_gquotaip
= NULL
;
380 xfs_dquot_t
*udqhint
, /* hint */
381 xfs_dquot_t
**IO_idqpp
)
386 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
390 * See if we already have it in the inode itself. IO_idqpp is
391 * &i_udquot or &i_gdquot. This made the code look weird, but
392 * made the logic a lot simpler.
396 trace_xfs_dqattach_found(dqp
);
401 * udqhint is the i_udquot field in inode, and is non-NULL only
402 * when the type arg is group/project. Its purpose is to save a
403 * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside
407 ASSERT(type
== XFS_DQ_GROUP
|| type
== XFS_DQ_PROJ
);
411 * No need to take dqlock to look at the id.
413 * The ID can't change until it gets reclaimed, and it won't
414 * be reclaimed as long as we have a ref from inode and we
417 dqp
= udqhint
->q_gdquot
;
418 if (dqp
&& be32_to_cpu(dqp
->q_core
.d_id
) == id
) {
419 ASSERT(*IO_idqpp
== NULL
);
421 *IO_idqpp
= xfs_qm_dqhold(dqp
);
422 xfs_dqunlock(udqhint
);
427 * We can't hold a dquot lock when we call the dqget code.
428 * We'll deadlock in no time, because of (not conforming to)
429 * lock ordering - the inodelock comes before any dquot lock,
430 * and we may drop and reacquire the ilock in xfs_qm_dqget().
432 xfs_dqunlock(udqhint
);
436 * Find the dquot from somewhere. This bumps the
437 * reference count of dquot and returns it locked.
438 * This can return ENOENT if dquot didn't exist on
439 * disk and we didn't ask it to allocate;
440 * ESRCH if quotas got turned off suddenly.
442 error
= xfs_qm_dqget(ip
->i_mount
, ip
, id
, type
,
443 doalloc
| XFS_QMOPT_DOWARN
, &dqp
);
447 trace_xfs_dqattach_get(dqp
);
450 * dqget may have dropped and re-acquired the ilock, but it guarantees
451 * that the dquot returned is the one that should go in the inode.
460 * Given a udquot and gdquot, attach a ptr to the group dquot in the
461 * udquot as a hint for future lookups.
464 xfs_qm_dqattach_grouphint(
477 udq
->q_gdquot
= NULL
;
481 udq
->q_gdquot
= xfs_qm_dqhold(gdq
);
488 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
490 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
491 * Inode may get unlocked and relocked in here, and the caller must deal with
495 xfs_qm_dqattach_locked(
499 xfs_mount_t
*mp
= ip
->i_mount
;
503 if (!XFS_IS_QUOTA_RUNNING(mp
) ||
504 !XFS_IS_QUOTA_ON(mp
) ||
505 !XFS_NOT_DQATTACHED(mp
, ip
) ||
506 ip
->i_ino
== mp
->m_sb
.sb_uquotino
||
507 ip
->i_ino
== mp
->m_sb
.sb_gquotino
)
510 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
512 if (XFS_IS_UQUOTA_ON(mp
)) {
513 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
514 flags
& XFS_QMOPT_DQALLOC
,
515 NULL
, &ip
->i_udquot
);
521 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
522 if (XFS_IS_OQUOTA_ON(mp
)) {
523 error
= XFS_IS_GQUOTA_ON(mp
) ?
524 xfs_qm_dqattach_one(ip
, ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
525 flags
& XFS_QMOPT_DQALLOC
,
526 ip
->i_udquot
, &ip
->i_gdquot
) :
527 xfs_qm_dqattach_one(ip
, xfs_get_projid(ip
), XFS_DQ_PROJ
,
528 flags
& XFS_QMOPT_DQALLOC
,
529 ip
->i_udquot
, &ip
->i_gdquot
);
531 * Don't worry about the udquot that we may have
532 * attached above. It'll get detached, if not already.
540 * Attach this group quota to the user quota as a hint.
541 * This WON'T, in general, result in a thrash.
544 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
545 ASSERT(ip
->i_udquot
);
546 ASSERT(ip
->i_gdquot
);
549 * We do not have i_udquot locked at this point, but this check
550 * is OK since we don't depend on the i_gdquot to be accurate
551 * 100% all the time. It is just a hint, and this will
552 * succeed in general.
554 if (ip
->i_udquot
->q_gdquot
!= ip
->i_gdquot
)
555 xfs_qm_dqattach_grouphint(ip
->i_udquot
, ip
->i_gdquot
);
561 if (XFS_IS_UQUOTA_ON(mp
))
562 ASSERT(ip
->i_udquot
);
563 if (XFS_IS_OQUOTA_ON(mp
))
564 ASSERT(ip
->i_gdquot
);
566 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
573 struct xfs_inode
*ip
,
578 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
579 error
= xfs_qm_dqattach_locked(ip
, flags
);
580 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
586 * Release dquots (and their references) if any.
587 * The inode should be locked EXCL except when this's called by
594 if (!(ip
->i_udquot
|| ip
->i_gdquot
))
597 trace_xfs_dquot_dqdetach(ip
);
599 ASSERT(ip
->i_ino
!= ip
->i_mount
->m_sb
.sb_uquotino
);
600 ASSERT(ip
->i_ino
!= ip
->i_mount
->m_sb
.sb_gquotino
);
602 xfs_qm_dqrele(ip
->i_udquot
);
606 xfs_qm_dqrele(ip
->i_gdquot
);
612 * This initializes all the quota information that's kept in the
616 xfs_qm_init_quotainfo(
619 xfs_quotainfo_t
*qinf
;
623 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
625 qinf
= mp
->m_quotainfo
= kmem_zalloc(sizeof(xfs_quotainfo_t
), KM_SLEEP
);
628 * See if quotainodes are setup, and if not, allocate them,
629 * and change the superblock accordingly.
631 if ((error
= xfs_qm_init_quotainos(mp
))) {
633 mp
->m_quotainfo
= NULL
;
637 INIT_RADIX_TREE(&qinf
->qi_uquota_tree
, GFP_NOFS
);
638 INIT_RADIX_TREE(&qinf
->qi_gquota_tree
, GFP_NOFS
);
639 mutex_init(&qinf
->qi_tree_lock
);
641 INIT_LIST_HEAD(&qinf
->qi_lru_list
);
642 qinf
->qi_lru_count
= 0;
643 mutex_init(&qinf
->qi_lru_lock
);
645 /* mutex used to serialize quotaoffs */
646 mutex_init(&qinf
->qi_quotaofflock
);
648 /* Precalc some constants */
649 qinf
->qi_dqchunklen
= XFS_FSB_TO_BB(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
650 ASSERT(qinf
->qi_dqchunklen
);
651 qinf
->qi_dqperchunk
= BBTOB(qinf
->qi_dqchunklen
);
652 do_div(qinf
->qi_dqperchunk
, sizeof(xfs_dqblk_t
));
654 mp
->m_qflags
|= (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_CHKD
);
657 * We try to get the limits from the superuser's limits fields.
658 * This is quite hacky, but it is standard quota practice.
660 * We look at the USR dquot with id == 0 first, but if user quotas
661 * are not enabled we goto the GRP dquot with id == 0.
662 * We don't really care to keep separate default limits for user
663 * and group quotas, at least not at this point.
665 * Since we may not have done a quotacheck by this point, just read
666 * the dquot without attaching it to any hashtables or lists.
668 error
= xfs_qm_dqread(mp
, 0,
669 XFS_IS_UQUOTA_RUNNING(mp
) ? XFS_DQ_USER
:
670 (XFS_IS_GQUOTA_RUNNING(mp
) ? XFS_DQ_GROUP
:
672 XFS_QMOPT_DOWARN
, &dqp
);
674 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
677 * The warnings and timers set the grace period given to
678 * a user or group before he or she can not perform any
679 * more writing. If it is zero, a default is used.
681 qinf
->qi_btimelimit
= ddqp
->d_btimer
?
682 be32_to_cpu(ddqp
->d_btimer
) : XFS_QM_BTIMELIMIT
;
683 qinf
->qi_itimelimit
= ddqp
->d_itimer
?
684 be32_to_cpu(ddqp
->d_itimer
) : XFS_QM_ITIMELIMIT
;
685 qinf
->qi_rtbtimelimit
= ddqp
->d_rtbtimer
?
686 be32_to_cpu(ddqp
->d_rtbtimer
) : XFS_QM_RTBTIMELIMIT
;
687 qinf
->qi_bwarnlimit
= ddqp
->d_bwarns
?
688 be16_to_cpu(ddqp
->d_bwarns
) : XFS_QM_BWARNLIMIT
;
689 qinf
->qi_iwarnlimit
= ddqp
->d_iwarns
?
690 be16_to_cpu(ddqp
->d_iwarns
) : XFS_QM_IWARNLIMIT
;
691 qinf
->qi_rtbwarnlimit
= ddqp
->d_rtbwarns
?
692 be16_to_cpu(ddqp
->d_rtbwarns
) : XFS_QM_RTBWARNLIMIT
;
693 qinf
->qi_bhardlimit
= be64_to_cpu(ddqp
->d_blk_hardlimit
);
694 qinf
->qi_bsoftlimit
= be64_to_cpu(ddqp
->d_blk_softlimit
);
695 qinf
->qi_ihardlimit
= be64_to_cpu(ddqp
->d_ino_hardlimit
);
696 qinf
->qi_isoftlimit
= be64_to_cpu(ddqp
->d_ino_softlimit
);
697 qinf
->qi_rtbhardlimit
= be64_to_cpu(ddqp
->d_rtb_hardlimit
);
698 qinf
->qi_rtbsoftlimit
= be64_to_cpu(ddqp
->d_rtb_softlimit
);
700 xfs_qm_dqdestroy(dqp
);
702 qinf
->qi_btimelimit
= XFS_QM_BTIMELIMIT
;
703 qinf
->qi_itimelimit
= XFS_QM_ITIMELIMIT
;
704 qinf
->qi_rtbtimelimit
= XFS_QM_RTBTIMELIMIT
;
705 qinf
->qi_bwarnlimit
= XFS_QM_BWARNLIMIT
;
706 qinf
->qi_iwarnlimit
= XFS_QM_IWARNLIMIT
;
707 qinf
->qi_rtbwarnlimit
= XFS_QM_RTBWARNLIMIT
;
710 qinf
->qi_shrinker
.shrink
= xfs_qm_shake
;
711 qinf
->qi_shrinker
.seeks
= DEFAULT_SEEKS
;
712 register_shrinker(&qinf
->qi_shrinker
);
718 * Gets called when unmounting a filesystem or when all quotas get
720 * This purges the quota inodes, destroys locks and frees itself.
723 xfs_qm_destroy_quotainfo(
728 qi
= mp
->m_quotainfo
;
731 unregister_shrinker(&qi
->qi_shrinker
);
733 if (qi
->qi_uquotaip
) {
734 IRELE(qi
->qi_uquotaip
);
735 qi
->qi_uquotaip
= NULL
; /* paranoia */
737 if (qi
->qi_gquotaip
) {
738 IRELE(qi
->qi_gquotaip
);
739 qi
->qi_gquotaip
= NULL
;
741 mutex_destroy(&qi
->qi_quotaofflock
);
743 mp
->m_quotainfo
= NULL
;
747 * Create an inode and return with a reference already taken, but unlocked
748 * This is how we create quota inodes
761 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_QINOCREATE
);
762 if ((error
= xfs_trans_reserve(tp
,
763 XFS_QM_QINOCREATE_SPACE_RES(mp
),
764 XFS_CREATE_LOG_RES(mp
), 0,
765 XFS_TRANS_PERM_LOG_RES
,
766 XFS_CREATE_LOG_COUNT
))) {
767 xfs_trans_cancel(tp
, 0);
771 error
= xfs_dir_ialloc(&tp
, NULL
, S_IFREG
, 1, 0, 0, 1, ip
, &committed
);
773 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
|
779 * Make the changes in the superblock, and log those too.
780 * sbfields arg may contain fields other than *QUOTINO;
781 * VERSIONNUM for example.
783 spin_lock(&mp
->m_sb_lock
);
784 if (flags
& XFS_QMOPT_SBVERSION
) {
785 ASSERT(!xfs_sb_version_hasquota(&mp
->m_sb
));
786 ASSERT((sbfields
& (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
787 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
)) ==
788 (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
789 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
));
791 xfs_sb_version_addquota(&mp
->m_sb
);
792 mp
->m_sb
.sb_uquotino
= NULLFSINO
;
793 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
795 /* qflags will get updated _after_ quotacheck */
796 mp
->m_sb
.sb_qflags
= 0;
798 if (flags
& XFS_QMOPT_UQUOTA
)
799 mp
->m_sb
.sb_uquotino
= (*ip
)->i_ino
;
801 mp
->m_sb
.sb_gquotino
= (*ip
)->i_ino
;
802 spin_unlock(&mp
->m_sb_lock
);
803 xfs_mod_sb(tp
, sbfields
);
805 if ((error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
))) {
806 xfs_alert(mp
, "%s failed (error %d)!", __func__
, error
);
814 xfs_qm_reset_dqcounts(
820 xfs_disk_dquot_t
*ddq
;
823 trace_xfs_reset_dqcounts(bp
, _RET_IP_
);
826 * Reset all counters and timers. They'll be
827 * started afresh by xfs_qm_quotacheck.
830 j
= XFS_FSB_TO_B(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
831 do_div(j
, sizeof(xfs_dqblk_t
));
832 ASSERT(mp
->m_quotainfo
->qi_dqperchunk
== j
);
835 for (j
= 0; j
< mp
->m_quotainfo
->qi_dqperchunk
; j
++) {
837 * Do a sanity check, and if needed, repair the dqblk. Don't
838 * output any warnings because it's perfectly possible to
839 * find uninitialised dquot blks. See comment in xfs_qm_dqcheck.
841 (void) xfs_qm_dqcheck(mp
, ddq
, id
+j
, type
, XFS_QMOPT_DQREPAIR
,
852 ddq
= (xfs_disk_dquot_t
*) ((xfs_dqblk_t
*)ddq
+ 1);
861 xfs_filblks_t blkcnt
,
869 type
= flags
& XFS_QMOPT_UQUOTA
? XFS_DQ_USER
:
870 (flags
& XFS_QMOPT_PQUOTA
? XFS_DQ_PROJ
: XFS_DQ_GROUP
);
874 * Blkcnt arg can be a very big number, and might even be
875 * larger than the log itself. So, we have to break it up into
876 * manageable-sized transactions.
877 * Note that we don't start a permanent transaction here; we might
878 * not be able to get a log reservation for the whole thing up front,
879 * and we don't really care to either, because we just discard
880 * everything if we were to crash in the middle of this loop.
883 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
884 XFS_FSB_TO_DADDR(mp
, bno
),
885 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
);
889 xfs_qm_reset_dqcounts(mp
, bp
, firstid
, type
);
890 xfs_buf_delwri_queue(bp
);
893 * goto the next block.
896 firstid
+= mp
->m_quotainfo
->qi_dqperchunk
;
902 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
903 * caller supplied function for every chunk of dquots that we find.
911 xfs_bmbt_irec_t
*map
;
912 int i
, nmaps
; /* number of map entries */
913 int error
; /* return value */
914 xfs_fileoff_t lblkno
;
915 xfs_filblks_t maxlblkcnt
;
917 xfs_fsblock_t rablkno
;
918 xfs_filblks_t rablkcnt
;
922 * This looks racy, but we can't keep an inode lock across a
923 * trans_reserve. But, this gets called during quotacheck, and that
924 * happens only at mount time which is single threaded.
926 if (qip
->i_d
.di_nblocks
== 0)
929 map
= kmem_alloc(XFS_DQITER_MAP_SIZE
* sizeof(*map
), KM_SLEEP
);
932 maxlblkcnt
= XFS_B_TO_FSB(mp
, (xfs_ufsize_t
)XFS_MAXIOFFSET(mp
));
934 nmaps
= XFS_DQITER_MAP_SIZE
;
936 * We aren't changing the inode itself. Just changing
937 * some of its data. No new blocks are added here, and
938 * the inode is never added to the transaction.
940 xfs_ilock(qip
, XFS_ILOCK_SHARED
);
941 error
= xfs_bmapi_read(qip
, lblkno
, maxlblkcnt
- lblkno
,
943 xfs_iunlock(qip
, XFS_ILOCK_SHARED
);
947 ASSERT(nmaps
<= XFS_DQITER_MAP_SIZE
);
948 for (i
= 0; i
< nmaps
; i
++) {
949 ASSERT(map
[i
].br_startblock
!= DELAYSTARTBLOCK
);
950 ASSERT(map
[i
].br_blockcount
);
953 lblkno
+= map
[i
].br_blockcount
;
955 if (map
[i
].br_startblock
== HOLESTARTBLOCK
)
958 firstid
= (xfs_dqid_t
) map
[i
].br_startoff
*
959 mp
->m_quotainfo
->qi_dqperchunk
;
961 * Do a read-ahead on the next extent.
964 (map
[i
+1].br_startblock
!= HOLESTARTBLOCK
)) {
965 rablkcnt
= map
[i
+1].br_blockcount
;
966 rablkno
= map
[i
+1].br_startblock
;
968 xfs_buf_readahead(mp
->m_ddev_targp
,
969 XFS_FSB_TO_DADDR(mp
, rablkno
),
970 mp
->m_quotainfo
->qi_dqchunklen
);
975 * Iterate thru all the blks in the extent and
976 * reset the counters of all the dquots inside them.
978 if ((error
= xfs_qm_dqiter_bufs(mp
,
980 map
[i
].br_startblock
,
981 map
[i
].br_blockcount
,
997 * Called by dqusage_adjust in doing a quotacheck.
999 * Given the inode, and a dquot id this updates both the incore dqout as well
1000 * as the buffer copy. This is so that once the quotacheck is done, we can
1001 * just log all the buffers, as opposed to logging numerous updates to
1002 * individual dquots.
1005 xfs_qm_quotacheck_dqadjust(
1006 struct xfs_inode
*ip
,
1012 struct xfs_mount
*mp
= ip
->i_mount
;
1013 struct xfs_dquot
*dqp
;
1016 error
= xfs_qm_dqget(mp
, ip
, id
, type
,
1017 XFS_QMOPT_DQALLOC
| XFS_QMOPT_DOWARN
, &dqp
);
1020 * Shouldn't be able to turn off quotas here.
1022 ASSERT(error
!= ESRCH
);
1023 ASSERT(error
!= ENOENT
);
1027 trace_xfs_dqadjust(dqp
);
1030 * Adjust the inode count and the block count to reflect this inode's
1033 be64_add_cpu(&dqp
->q_core
.d_icount
, 1);
1034 dqp
->q_res_icount
++;
1036 be64_add_cpu(&dqp
->q_core
.d_bcount
, nblks
);
1037 dqp
->q_res_bcount
+= nblks
;
1040 be64_add_cpu(&dqp
->q_core
.d_rtbcount
, rtblks
);
1041 dqp
->q_res_rtbcount
+= rtblks
;
1045 * Set default limits, adjust timers (since we changed usages)
1047 * There are no timers for the default values set in the root dquot.
1049 if (dqp
->q_core
.d_id
) {
1050 xfs_qm_adjust_dqlimits(mp
, &dqp
->q_core
);
1051 xfs_qm_adjust_dqtimers(mp
, &dqp
->q_core
);
1054 dqp
->dq_flags
|= XFS_DQ_DIRTY
;
1062 xfs_qcnt_t
*O_rtblks
)
1064 xfs_filblks_t rtblks
; /* total rt blks */
1065 xfs_extnum_t idx
; /* extent record index */
1066 xfs_ifork_t
*ifp
; /* inode fork pointer */
1067 xfs_extnum_t nextents
; /* number of extent entries */
1070 ASSERT(XFS_IS_REALTIME_INODE(ip
));
1071 ifp
= XFS_IFORK_PTR(ip
, XFS_DATA_FORK
);
1072 if (!(ifp
->if_flags
& XFS_IFEXTENTS
)) {
1073 if ((error
= xfs_iread_extents(NULL
, ip
, XFS_DATA_FORK
)))
1077 nextents
= ifp
->if_bytes
/ (uint
)sizeof(xfs_bmbt_rec_t
);
1078 for (idx
= 0; idx
< nextents
; idx
++)
1079 rtblks
+= xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp
, idx
));
1080 *O_rtblks
= (xfs_qcnt_t
)rtblks
;
1085 * callback routine supplied to bulkstat(). Given an inumber, find its
1086 * dquots and update them to account for resources taken by that inode.
1090 xfs_qm_dqusage_adjust(
1091 xfs_mount_t
*mp
, /* mount point for filesystem */
1092 xfs_ino_t ino
, /* inode number to get data for */
1093 void __user
*buffer
, /* not used */
1094 int ubsize
, /* not used */
1095 int *ubused
, /* not used */
1096 int *res
) /* result code value */
1099 xfs_qcnt_t nblks
, rtblks
= 0;
1102 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1105 * rootino must have its resources accounted for, not so with the quota
1108 if (ino
== mp
->m_sb
.sb_uquotino
|| ino
== mp
->m_sb
.sb_gquotino
) {
1109 *res
= BULKSTAT_RV_NOTHING
;
1110 return XFS_ERROR(EINVAL
);
1114 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1115 * interface expects the inode to be exclusively locked because that's
1116 * the case in all other instances. It's OK that we do this because
1117 * quotacheck is done only at mount time.
1119 error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_EXCL
, &ip
);
1121 *res
= BULKSTAT_RV_NOTHING
;
1125 ASSERT(ip
->i_delayed_blks
== 0);
1127 if (XFS_IS_REALTIME_INODE(ip
)) {
1129 * Walk thru the extent list and count the realtime blocks.
1131 error
= xfs_qm_get_rtblks(ip
, &rtblks
);
1136 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
- rtblks
;
1139 * Add the (disk blocks and inode) resources occupied by this
1140 * inode to its dquots. We do this adjustment in the incore dquot,
1141 * and also copy the changes to its buffer.
1142 * We don't care about putting these changes in a transaction
1143 * envelope because if we crash in the middle of a 'quotacheck'
1144 * we have to start from the beginning anyway.
1145 * Once we're done, we'll log all the dquot bufs.
1147 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1148 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1150 if (XFS_IS_UQUOTA_ON(mp
)) {
1151 error
= xfs_qm_quotacheck_dqadjust(ip
, ip
->i_d
.di_uid
,
1152 XFS_DQ_USER
, nblks
, rtblks
);
1157 if (XFS_IS_GQUOTA_ON(mp
)) {
1158 error
= xfs_qm_quotacheck_dqadjust(ip
, ip
->i_d
.di_gid
,
1159 XFS_DQ_GROUP
, nblks
, rtblks
);
1164 if (XFS_IS_PQUOTA_ON(mp
)) {
1165 error
= xfs_qm_quotacheck_dqadjust(ip
, xfs_get_projid(ip
),
1166 XFS_DQ_PROJ
, nblks
, rtblks
);
1171 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1173 *res
= BULKSTAT_RV_DIDONE
;
1177 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1179 *res
= BULKSTAT_RV_GIVEUP
;
1185 struct xfs_dquot
*dqp
)
1190 if (dqp
->dq_flags
& XFS_DQ_FREEING
)
1192 if (!XFS_DQ_IS_DIRTY(dqp
))
1195 if (!xfs_dqflock_nowait(dqp
))
1196 xfs_dqflock_pushbuf_wait(dqp
);
1198 error
= xfs_qm_dqflush(dqp
, 0);
1206 * Walk thru all the filesystem inodes and construct a consistent view
1207 * of the disk quota world. If the quotacheck fails, disable quotas.
1213 int done
, count
, error
, error2
;
1216 xfs_inode_t
*uip
, *gip
;
1224 ASSERT(mp
->m_quotainfo
->qi_uquotaip
|| mp
->m_quotainfo
->qi_gquotaip
);
1225 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1227 xfs_notice(mp
, "Quotacheck needed: Please wait.");
1230 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1231 * their counters to zero. We need a clean slate.
1232 * We don't log our changes till later.
1234 uip
= mp
->m_quotainfo
->qi_uquotaip
;
1236 error
= xfs_qm_dqiterate(mp
, uip
, XFS_QMOPT_UQUOTA
);
1239 flags
|= XFS_UQUOTA_CHKD
;
1242 gip
= mp
->m_quotainfo
->qi_gquotaip
;
1244 error
= xfs_qm_dqiterate(mp
, gip
, XFS_IS_GQUOTA_ON(mp
) ?
1245 XFS_QMOPT_GQUOTA
: XFS_QMOPT_PQUOTA
);
1248 flags
|= XFS_OQUOTA_CHKD
;
1253 * Iterate thru all the inodes in the file system,
1254 * adjusting the corresponding dquot counters in core.
1256 error
= xfs_bulkstat(mp
, &lastino
, &count
,
1257 xfs_qm_dqusage_adjust
,
1258 structsz
, NULL
, &done
);
1265 * We've made all the changes that we need to make incore. Flush them
1266 * down to disk buffers if everything was updated successfully.
1268 if (XFS_IS_UQUOTA_ON(mp
))
1269 error
= xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_flush_one
);
1270 if (XFS_IS_GQUOTA_ON(mp
)) {
1271 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_flush_one
);
1275 if (XFS_IS_PQUOTA_ON(mp
)) {
1276 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_flush_one
);
1282 * We can get this error if we couldn't do a dquot allocation inside
1283 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1284 * dirty dquots that might be cached, we just want to get rid of them
1285 * and turn quotaoff. The dquots won't be attached to any of the inodes
1286 * at this point (because we intentionally didn't in dqget_noattach).
1289 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
1294 * We didn't log anything, because if we crashed, we'll have to
1295 * start the quotacheck from scratch anyway. However, we must make
1296 * sure that our dquot changes are secure before we put the
1297 * quotacheck'd stamp on the superblock. So, here we do a synchronous
1300 xfs_flush_buftarg(mp
->m_ddev_targp
, 1);
1303 * If one type of quotas is off, then it will lose its
1304 * quotachecked status, since we won't be doing accounting for
1305 * that type anymore.
1307 mp
->m_qflags
&= ~XFS_ALL_QUOTA_CHKD
;
1308 mp
->m_qflags
|= flags
;
1313 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1316 * We must turn off quotas.
1318 ASSERT(mp
->m_quotainfo
!= NULL
);
1319 xfs_qm_destroy_quotainfo(mp
);
1320 if (xfs_mount_reset_sbqflags(mp
)) {
1322 "Quotacheck: Failed to reset quota flags.");
1325 xfs_notice(mp
, "Quotacheck: Done.");
1330 * This is called after the superblock has been read in and we're ready to
1331 * iget the quota inodes.
1334 xfs_qm_init_quotainos(
1337 xfs_inode_t
*uip
, *gip
;
1342 ASSERT(mp
->m_quotainfo
);
1348 * Get the uquota and gquota inodes
1350 if (xfs_sb_version_hasquota(&mp
->m_sb
)) {
1351 if (XFS_IS_UQUOTA_ON(mp
) &&
1352 mp
->m_sb
.sb_uquotino
!= NULLFSINO
) {
1353 ASSERT(mp
->m_sb
.sb_uquotino
> 0);
1354 if ((error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_uquotino
,
1356 return XFS_ERROR(error
);
1358 if (XFS_IS_OQUOTA_ON(mp
) &&
1359 mp
->m_sb
.sb_gquotino
!= NULLFSINO
) {
1360 ASSERT(mp
->m_sb
.sb_gquotino
> 0);
1361 if ((error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_gquotino
,
1365 return XFS_ERROR(error
);
1369 flags
|= XFS_QMOPT_SBVERSION
;
1370 sbflags
|= (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1371 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
);
1375 * Create the two inodes, if they don't exist already. The changes
1376 * made above will get added to a transaction and logged in one of
1377 * the qino_alloc calls below. If the device is readonly,
1378 * temporarily switch to read-write to do this.
1380 if (XFS_IS_UQUOTA_ON(mp
) && uip
== NULL
) {
1381 if ((error
= xfs_qm_qino_alloc(mp
, &uip
,
1382 sbflags
| XFS_SB_UQUOTINO
,
1383 flags
| XFS_QMOPT_UQUOTA
)))
1384 return XFS_ERROR(error
);
1386 flags
&= ~XFS_QMOPT_SBVERSION
;
1388 if (XFS_IS_OQUOTA_ON(mp
) && gip
== NULL
) {
1389 flags
|= (XFS_IS_GQUOTA_ON(mp
) ?
1390 XFS_QMOPT_GQUOTA
: XFS_QMOPT_PQUOTA
);
1391 error
= xfs_qm_qino_alloc(mp
, &gip
,
1392 sbflags
| XFS_SB_GQUOTINO
, flags
);
1397 return XFS_ERROR(error
);
1401 mp
->m_quotainfo
->qi_uquotaip
= uip
;
1402 mp
->m_quotainfo
->qi_gquotaip
= gip
;
1409 struct xfs_dquot
*dqp
)
1411 struct xfs_mount
*mp
= dqp
->q_mount
;
1412 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
1414 mutex_lock(&qi
->qi_tree_lock
);
1415 radix_tree_delete(XFS_DQUOT_TREE(qi
, dqp
->q_core
.d_flags
),
1416 be32_to_cpu(dqp
->q_core
.d_id
));
1419 mutex_unlock(&qi
->qi_tree_lock
);
1421 xfs_qm_dqdestroy(dqp
);
1425 xfs_qm_dqreclaim_one(
1426 struct xfs_dquot
*dqp
,
1427 struct list_head
*dispose_list
)
1429 struct xfs_mount
*mp
= dqp
->q_mount
;
1430 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
1433 if (!xfs_dqlock_nowait(dqp
))
1437 * This dquot has acquired a reference in the meantime remove it from
1438 * the freelist and try again.
1443 trace_xfs_dqreclaim_want(dqp
);
1444 XFS_STATS_INC(xs_qm_dqwants
);
1446 list_del_init(&dqp
->q_lru
);
1448 XFS_STATS_DEC(xs_qm_dquot_unused
);
1453 * Try to grab the flush lock. If this dquot is in the process of
1454 * getting flushed to disk, we don't want to reclaim it.
1456 if (!xfs_dqflock_nowait(dqp
))
1460 * We have the flush lock so we know that this is not in the
1461 * process of being flushed. So, if this is dirty, flush it
1462 * DELWRI so that we don't get a freelist infested with
1465 if (XFS_DQ_IS_DIRTY(dqp
)) {
1466 trace_xfs_dqreclaim_dirty(dqp
);
1469 * We flush it delayed write, so don't bother releasing the
1472 error
= xfs_qm_dqflush(dqp
, 0);
1474 xfs_warn(mp
, "%s: dquot %p flush failed",
1479 * Give the dquot another try on the freelist, as the
1480 * flushing will take some time.
1487 * Prevent lookups now that we are past the point of no return.
1489 dqp
->dq_flags
|= XFS_DQ_FREEING
;
1492 ASSERT(dqp
->q_nrefs
== 0);
1493 list_move_tail(&dqp
->q_lru
, dispose_list
);
1495 XFS_STATS_DEC(xs_qm_dquot_unused
);
1497 trace_xfs_dqreclaim_done(dqp
);
1498 XFS_STATS_INC(xs_qm_dqreclaims
);
1505 * Move the dquot to the tail of the list so that we don't spin on it.
1507 list_move_tail(&dqp
->q_lru
, &qi
->qi_lru_list
);
1509 trace_xfs_dqreclaim_busy(dqp
);
1510 XFS_STATS_INC(xs_qm_dqreclaim_misses
);
1515 struct shrinker
*shrink
,
1516 struct shrink_control
*sc
)
1518 struct xfs_quotainfo
*qi
=
1519 container_of(shrink
, struct xfs_quotainfo
, qi_shrinker
);
1520 int nr_to_scan
= sc
->nr_to_scan
;
1521 LIST_HEAD (dispose_list
);
1522 struct xfs_dquot
*dqp
;
1524 if ((sc
->gfp_mask
& (__GFP_FS
|__GFP_WAIT
)) != (__GFP_FS
|__GFP_WAIT
))
1529 mutex_lock(&qi
->qi_lru_lock
);
1530 while (!list_empty(&qi
->qi_lru_list
)) {
1531 if (nr_to_scan
-- <= 0)
1533 dqp
= list_first_entry(&qi
->qi_lru_list
, struct xfs_dquot
,
1535 xfs_qm_dqreclaim_one(dqp
, &dispose_list
);
1537 mutex_unlock(&qi
->qi_lru_lock
);
1539 while (!list_empty(&dispose_list
)) {
1540 dqp
= list_first_entry(&dispose_list
, struct xfs_dquot
, q_lru
);
1541 list_del_init(&dqp
->q_lru
);
1542 xfs_qm_dqfree_one(dqp
);
1545 return (qi
->qi_lru_count
/ 100) * sysctl_vfs_cache_pressure
;
1549 * Start a transaction and write the incore superblock changes to
1550 * disk. flags parameter indicates which fields have changed.
1553 xfs_qm_write_sb_changes(
1560 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_SBCHANGE
);
1561 if ((error
= xfs_trans_reserve(tp
, 0,
1562 mp
->m_sb
.sb_sectsize
+ 128, 0,
1564 XFS_DEFAULT_LOG_COUNT
))) {
1565 xfs_trans_cancel(tp
, 0);
1569 xfs_mod_sb(tp
, flags
);
1570 error
= xfs_trans_commit(tp
, 0);
1576 /* --------------- utility functions for vnodeops ---------------- */
1580 * Given an inode, a uid, gid and prid make sure that we have
1581 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1582 * quotas by creating this file.
1583 * This also attaches dquot(s) to the given inode after locking it,
1584 * and returns the dquots corresponding to the uid and/or gid.
1586 * in : inode (unlocked)
1587 * out : udquot, gdquot with references taken and unlocked
1591 struct xfs_inode
*ip
,
1596 struct xfs_dquot
**O_udqpp
,
1597 struct xfs_dquot
**O_gdqpp
)
1599 struct xfs_mount
*mp
= ip
->i_mount
;
1600 struct xfs_dquot
*uq
, *gq
;
1604 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1607 lockflags
= XFS_ILOCK_EXCL
;
1608 xfs_ilock(ip
, lockflags
);
1610 if ((flags
& XFS_QMOPT_INHERIT
) && XFS_INHERIT_GID(ip
))
1611 gid
= ip
->i_d
.di_gid
;
1614 * Attach the dquot(s) to this inode, doing a dquot allocation
1615 * if necessary. The dquot(s) will not be locked.
1617 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
1618 error
= xfs_qm_dqattach_locked(ip
, XFS_QMOPT_DQALLOC
);
1620 xfs_iunlock(ip
, lockflags
);
1626 if ((flags
& XFS_QMOPT_UQUOTA
) && XFS_IS_UQUOTA_ON(mp
)) {
1627 if (ip
->i_d
.di_uid
!= uid
) {
1629 * What we need is the dquot that has this uid, and
1630 * if we send the inode to dqget, the uid of the inode
1631 * takes priority over what's sent in the uid argument.
1632 * We must unlock inode here before calling dqget if
1633 * we're not sending the inode, because otherwise
1634 * we'll deadlock by doing trans_reserve while
1637 xfs_iunlock(ip
, lockflags
);
1638 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
) uid
,
1643 ASSERT(error
!= ENOENT
);
1647 * Get the ilock in the right order.
1650 lockflags
= XFS_ILOCK_SHARED
;
1651 xfs_ilock(ip
, lockflags
);
1654 * Take an extra reference, because we'll return
1657 ASSERT(ip
->i_udquot
);
1658 uq
= xfs_qm_dqhold(ip
->i_udquot
);
1661 if ((flags
& XFS_QMOPT_GQUOTA
) && XFS_IS_GQUOTA_ON(mp
)) {
1662 if (ip
->i_d
.di_gid
!= gid
) {
1663 xfs_iunlock(ip
, lockflags
);
1664 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)gid
,
1671 ASSERT(error
!= ENOENT
);
1675 lockflags
= XFS_ILOCK_SHARED
;
1676 xfs_ilock(ip
, lockflags
);
1678 ASSERT(ip
->i_gdquot
);
1679 gq
= xfs_qm_dqhold(ip
->i_gdquot
);
1681 } else if ((flags
& XFS_QMOPT_PQUOTA
) && XFS_IS_PQUOTA_ON(mp
)) {
1682 if (xfs_get_projid(ip
) != prid
) {
1683 xfs_iunlock(ip
, lockflags
);
1684 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)prid
,
1691 ASSERT(error
!= ENOENT
);
1695 lockflags
= XFS_ILOCK_SHARED
;
1696 xfs_ilock(ip
, lockflags
);
1698 ASSERT(ip
->i_gdquot
);
1699 gq
= xfs_qm_dqhold(ip
->i_gdquot
);
1703 trace_xfs_dquot_dqalloc(ip
);
1705 xfs_iunlock(ip
, lockflags
);
1718 * Actually transfer ownership, and do dquot modifications.
1719 * These were already reserved.
1725 xfs_dquot_t
**IO_olddq
,
1728 xfs_dquot_t
*prevdq
;
1729 uint bfield
= XFS_IS_REALTIME_INODE(ip
) ?
1730 XFS_TRANS_DQ_RTBCOUNT
: XFS_TRANS_DQ_BCOUNT
;
1733 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1734 ASSERT(XFS_IS_QUOTA_RUNNING(ip
->i_mount
));
1739 ASSERT(prevdq
!= newdq
);
1741 xfs_trans_mod_dquot(tp
, prevdq
, bfield
, -(ip
->i_d
.di_nblocks
));
1742 xfs_trans_mod_dquot(tp
, prevdq
, XFS_TRANS_DQ_ICOUNT
, -1);
1744 /* the sparkling new dquot */
1745 xfs_trans_mod_dquot(tp
, newdq
, bfield
, ip
->i_d
.di_nblocks
);
1746 xfs_trans_mod_dquot(tp
, newdq
, XFS_TRANS_DQ_ICOUNT
, 1);
1749 * Take an extra reference, because the inode is going to keep
1750 * this dquot pointer even after the trans_commit.
1752 *IO_olddq
= xfs_qm_dqhold(newdq
);
1758 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1761 xfs_qm_vop_chown_reserve(
1768 xfs_mount_t
*mp
= ip
->i_mount
;
1769 uint delblks
, blkflags
, prjflags
= 0;
1770 xfs_dquot_t
*unresudq
, *unresgdq
, *delblksudq
, *delblksgdq
;
1774 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
|XFS_ILOCK_SHARED
));
1775 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1777 delblks
= ip
->i_delayed_blks
;
1778 delblksudq
= delblksgdq
= unresudq
= unresgdq
= NULL
;
1779 blkflags
= XFS_IS_REALTIME_INODE(ip
) ?
1780 XFS_QMOPT_RES_RTBLKS
: XFS_QMOPT_RES_REGBLKS
;
1782 if (XFS_IS_UQUOTA_ON(mp
) && udqp
&&
1783 ip
->i_d
.di_uid
!= (uid_t
)be32_to_cpu(udqp
->q_core
.d_id
)) {
1786 * If there are delayed allocation blocks, then we have to
1787 * unreserve those from the old dquot, and add them to the
1791 ASSERT(ip
->i_udquot
);
1792 unresudq
= ip
->i_udquot
;
1795 if (XFS_IS_OQUOTA_ON(ip
->i_mount
) && gdqp
) {
1796 if (XFS_IS_PQUOTA_ON(ip
->i_mount
) &&
1797 xfs_get_projid(ip
) != be32_to_cpu(gdqp
->q_core
.d_id
))
1798 prjflags
= XFS_QMOPT_ENOSPC
;
1801 (XFS_IS_GQUOTA_ON(ip
->i_mount
) &&
1802 ip
->i_d
.di_gid
!= be32_to_cpu(gdqp
->q_core
.d_id
))) {
1805 ASSERT(ip
->i_gdquot
);
1806 unresgdq
= ip
->i_gdquot
;
1811 if ((error
= xfs_trans_reserve_quota_bydquots(tp
, ip
->i_mount
,
1812 delblksudq
, delblksgdq
, ip
->i_d
.di_nblocks
, 1,
1813 flags
| blkflags
| prjflags
)))
1817 * Do the delayed blks reservations/unreservations now. Since, these
1818 * are done without the help of a transaction, if a reservation fails
1819 * its previous reservations won't be automatically undone by trans
1820 * code. So, we have to do it manually here.
1824 * Do the reservations first. Unreservation can't fail.
1826 ASSERT(delblksudq
|| delblksgdq
);
1827 ASSERT(unresudq
|| unresgdq
);
1828 if ((error
= xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
1829 delblksudq
, delblksgdq
, (xfs_qcnt_t
)delblks
, 0,
1830 flags
| blkflags
| prjflags
)))
1832 xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
1833 unresudq
, unresgdq
, -((xfs_qcnt_t
)delblks
), 0,
1841 xfs_qm_vop_rename_dqattach(
1842 struct xfs_inode
**i_tab
)
1844 struct xfs_mount
*mp
= i_tab
[0]->i_mount
;
1847 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1850 for (i
= 0; (i
< 4 && i_tab
[i
]); i
++) {
1851 struct xfs_inode
*ip
= i_tab
[i
];
1855 * Watch out for duplicate entries in the table.
1857 if (i
== 0 || ip
!= i_tab
[i
-1]) {
1858 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
1859 error
= xfs_qm_dqattach(ip
, 0);
1869 xfs_qm_vop_create_dqattach(
1870 struct xfs_trans
*tp
,
1871 struct xfs_inode
*ip
,
1872 struct xfs_dquot
*udqp
,
1873 struct xfs_dquot
*gdqp
)
1875 struct xfs_mount
*mp
= tp
->t_mountp
;
1877 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1880 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1881 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1884 ASSERT(ip
->i_udquot
== NULL
);
1885 ASSERT(XFS_IS_UQUOTA_ON(mp
));
1886 ASSERT(ip
->i_d
.di_uid
== be32_to_cpu(udqp
->q_core
.d_id
));
1888 ip
->i_udquot
= xfs_qm_dqhold(udqp
);
1889 xfs_trans_mod_dquot(tp
, udqp
, XFS_TRANS_DQ_ICOUNT
, 1);
1892 ASSERT(ip
->i_gdquot
== NULL
);
1893 ASSERT(XFS_IS_OQUOTA_ON(mp
));
1894 ASSERT((XFS_IS_GQUOTA_ON(mp
) ?
1895 ip
->i_d
.di_gid
: xfs_get_projid(ip
)) ==
1896 be32_to_cpu(gdqp
->q_core
.d_id
));
1898 ip
->i_gdquot
= xfs_qm_dqhold(gdqp
);
1899 xfs_trans_mod_dquot(tp
, gdqp
, XFS_TRANS_DQ_ICOUNT
, 1);