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
20 #include "xfs_shared.h"
21 #include "xfs_format.h"
22 #include "xfs_log_format.h"
23 #include "xfs_trans_resv.h"
26 #include "xfs_mount.h"
27 #include "xfs_inode.h"
28 #include "xfs_ialloc.h"
29 #include "xfs_itable.h"
30 #include "xfs_quota.h"
31 #include "xfs_error.h"
33 #include "xfs_bmap_btree.h"
34 #include "xfs_bmap_util.h"
35 #include "xfs_trans.h"
36 #include "xfs_trans_space.h"
38 #include "xfs_trace.h"
39 #include "xfs_icache.h"
40 #include "xfs_cksum.h"
43 * The global quota manager. There is only one of these for the entire
44 * system, _not_ one per file system. XQM keeps track of the overall
45 * quota functionality, including maintaining the freelist and hash
48 STATIC
int xfs_qm_init_quotainos(xfs_mount_t
*);
49 STATIC
int xfs_qm_init_quotainfo(xfs_mount_t
*);
52 STATIC
void xfs_qm_dqfree_one(struct xfs_dquot
*dqp
);
54 * We use the batch lookup interface to iterate over the dquots as it
55 * currently is the only interface into the radix tree code that allows
56 * fuzzy lookups instead of exact matches. Holding the lock over multiple
57 * operations is fine as all callers are used either during mount/umount
60 #define XFS_DQ_LOOKUP_BATCH 32
66 int (*execute
)(struct xfs_dquot
*dqp
, void *data
),
69 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
70 struct radix_tree_root
*tree
= xfs_dquot_tree(qi
, type
);
82 struct xfs_dquot
*batch
[XFS_DQ_LOOKUP_BATCH
];
86 mutex_lock(&qi
->qi_tree_lock
);
87 nr_found
= radix_tree_gang_lookup(tree
, (void **)batch
,
88 next_index
, XFS_DQ_LOOKUP_BATCH
);
90 mutex_unlock(&qi
->qi_tree_lock
);
94 for (i
= 0; i
< nr_found
; i
++) {
95 struct xfs_dquot
*dqp
= batch
[i
];
97 next_index
= be32_to_cpu(dqp
->q_core
.d_id
) + 1;
99 error
= execute(batch
[i
], data
);
100 if (error
== -EAGAIN
) {
104 if (error
&& last_error
!= -EFSCORRUPTED
)
108 mutex_unlock(&qi
->qi_tree_lock
);
110 /* bail out if the filesystem is corrupted. */
111 if (last_error
== -EFSCORRUPTED
) {
115 /* we're done if id overflows back to zero */
130 * Purge a dquot from all tracking data structures and free it.
134 struct xfs_dquot
*dqp
,
137 struct xfs_mount
*mp
= dqp
->q_mount
;
138 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
141 if ((dqp
->dq_flags
& XFS_DQ_FREEING
) || dqp
->q_nrefs
!= 0) {
146 dqp
->dq_flags
|= XFS_DQ_FREEING
;
151 * If we are turning this type of quotas off, we don't care
152 * about the dirty metadata sitting in this dquot. OTOH, if
153 * we're unmounting, we do care, so we flush it and wait.
155 if (XFS_DQ_IS_DIRTY(dqp
)) {
156 struct xfs_buf
*bp
= NULL
;
160 * We don't care about getting disk errors here. We need
161 * to purge this dquot anyway, so we go ahead regardless.
163 error
= xfs_qm_dqflush(dqp
, &bp
);
165 xfs_warn(mp
, "%s: dquot %p flush failed",
168 error
= xfs_bwrite(bp
);
174 ASSERT(atomic_read(&dqp
->q_pincount
) == 0);
175 ASSERT(XFS_FORCED_SHUTDOWN(mp
) ||
176 !(dqp
->q_logitem
.qli_item
.li_flags
& XFS_LI_IN_AIL
));
181 radix_tree_delete(xfs_dquot_tree(qi
, dqp
->q_core
.d_flags
),
182 be32_to_cpu(dqp
->q_core
.d_id
));
186 * We move dquots to the freelist as soon as their reference count
187 * hits zero, so it really should be on the freelist here.
189 ASSERT(!list_empty(&dqp
->q_lru
));
190 list_lru_del(&qi
->qi_lru
, &dqp
->q_lru
);
191 XFS_STATS_DEC(mp
, xs_qm_dquot_unused
);
193 xfs_qm_dqdestroy(dqp
);
198 * Purge the dquot cache.
202 struct xfs_mount
*mp
,
205 if (flags
& XFS_QMOPT_UQUOTA
)
206 xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_dqpurge
, NULL
);
207 if (flags
& XFS_QMOPT_GQUOTA
)
208 xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_dqpurge
, NULL
);
209 if (flags
& XFS_QMOPT_PQUOTA
)
210 xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_dqpurge
, NULL
);
214 * Just destroy the quotainfo structure.
218 struct xfs_mount
*mp
)
220 if (mp
->m_quotainfo
) {
221 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
222 xfs_qm_destroy_quotainfo(mp
);
227 * Called from the vfsops layer.
230 xfs_qm_unmount_quotas(
234 * Release the dquots that root inode, et al might be holding,
235 * before we flush quotas and blow away the quotainfo structure.
237 ASSERT(mp
->m_rootip
);
238 xfs_qm_dqdetach(mp
->m_rootip
);
240 xfs_qm_dqdetach(mp
->m_rbmip
);
242 xfs_qm_dqdetach(mp
->m_rsumip
);
245 * Release the quota inodes.
247 if (mp
->m_quotainfo
) {
248 if (mp
->m_quotainfo
->qi_uquotaip
) {
249 IRELE(mp
->m_quotainfo
->qi_uquotaip
);
250 mp
->m_quotainfo
->qi_uquotaip
= NULL
;
252 if (mp
->m_quotainfo
->qi_gquotaip
) {
253 IRELE(mp
->m_quotainfo
->qi_gquotaip
);
254 mp
->m_quotainfo
->qi_gquotaip
= NULL
;
256 if (mp
->m_quotainfo
->qi_pquotaip
) {
257 IRELE(mp
->m_quotainfo
->qi_pquotaip
);
258 mp
->m_quotainfo
->qi_pquotaip
= NULL
;
269 xfs_dquot_t
**IO_idqpp
)
274 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
278 * See if we already have it in the inode itself. IO_idqpp is &i_udquot
279 * or &i_gdquot. This made the code look weird, but made the logic a lot
284 trace_xfs_dqattach_found(dqp
);
289 * Find the dquot from somewhere. This bumps the reference count of
290 * dquot and returns it locked. This can return ENOENT if dquot didn't
291 * exist on disk and we didn't ask it to allocate; ESRCH if quotas got
292 * turned off suddenly.
294 error
= xfs_qm_dqget(ip
->i_mount
, ip
, id
, type
,
295 doalloc
| XFS_QMOPT_DOWARN
, &dqp
);
299 trace_xfs_dqattach_get(dqp
);
302 * dqget may have dropped and re-acquired the ilock, but it guarantees
303 * that the dquot returned is the one that should go in the inode.
311 xfs_qm_need_dqattach(
312 struct xfs_inode
*ip
)
314 struct xfs_mount
*mp
= ip
->i_mount
;
316 if (!XFS_IS_QUOTA_RUNNING(mp
))
318 if (!XFS_IS_QUOTA_ON(mp
))
320 if (!XFS_NOT_DQATTACHED(mp
, ip
))
322 if (xfs_is_quota_inode(&mp
->m_sb
, ip
->i_ino
))
328 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
330 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
331 * Inode may get unlocked and relocked in here, and the caller must deal with
335 xfs_qm_dqattach_locked(
339 xfs_mount_t
*mp
= ip
->i_mount
;
342 if (!xfs_qm_need_dqattach(ip
))
345 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
347 if (XFS_IS_UQUOTA_ON(mp
) && !ip
->i_udquot
) {
348 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
349 flags
& XFS_QMOPT_DQALLOC
,
353 ASSERT(ip
->i_udquot
);
356 if (XFS_IS_GQUOTA_ON(mp
) && !ip
->i_gdquot
) {
357 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
358 flags
& XFS_QMOPT_DQALLOC
,
362 ASSERT(ip
->i_gdquot
);
365 if (XFS_IS_PQUOTA_ON(mp
) && !ip
->i_pdquot
) {
366 error
= xfs_qm_dqattach_one(ip
, xfs_get_projid(ip
), XFS_DQ_PROJ
,
367 flags
& XFS_QMOPT_DQALLOC
,
371 ASSERT(ip
->i_pdquot
);
376 * Don't worry about the dquots that we may have attached before any
377 * error - they'll get detached later if it has not already been done.
379 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
385 struct xfs_inode
*ip
,
390 if (!xfs_qm_need_dqattach(ip
))
393 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
394 error
= xfs_qm_dqattach_locked(ip
, flags
);
395 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
401 * Release dquots (and their references) if any.
402 * The inode should be locked EXCL except when this's called by
409 if (!(ip
->i_udquot
|| ip
->i_gdquot
|| ip
->i_pdquot
))
412 trace_xfs_dquot_dqdetach(ip
);
414 ASSERT(!xfs_is_quota_inode(&ip
->i_mount
->m_sb
, ip
->i_ino
));
416 xfs_qm_dqrele(ip
->i_udquot
);
420 xfs_qm_dqrele(ip
->i_gdquot
);
424 xfs_qm_dqrele(ip
->i_pdquot
);
429 struct xfs_qm_isolate
{
430 struct list_head buffers
;
431 struct list_head dispose
;
434 static enum lru_status
435 xfs_qm_dquot_isolate(
436 struct list_head
*item
,
437 struct list_lru_one
*lru
,
438 spinlock_t
*lru_lock
,
440 __releases(lru_lock
) __acquires(lru_lock
)
442 struct xfs_dquot
*dqp
= container_of(item
,
443 struct xfs_dquot
, q_lru
);
444 struct xfs_qm_isolate
*isol
= arg
;
446 if (!xfs_dqlock_nowait(dqp
))
450 * This dquot has acquired a reference in the meantime remove it from
451 * the freelist and try again.
455 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqwants
);
457 trace_xfs_dqreclaim_want(dqp
);
458 list_lru_isolate(lru
, &dqp
->q_lru
);
459 XFS_STATS_DEC(dqp
->q_mount
, xs_qm_dquot_unused
);
464 * If the dquot is dirty, flush it. If it's already being flushed, just
465 * skip it so there is time for the IO to complete before we try to
466 * reclaim it again on the next LRU pass.
468 if (!xfs_dqflock_nowait(dqp
)) {
473 if (XFS_DQ_IS_DIRTY(dqp
)) {
474 struct xfs_buf
*bp
= NULL
;
477 trace_xfs_dqreclaim_dirty(dqp
);
479 /* we have to drop the LRU lock to flush the dquot */
480 spin_unlock(lru_lock
);
482 error
= xfs_qm_dqflush(dqp
, &bp
);
484 xfs_warn(dqp
->q_mount
, "%s: dquot %p flush failed",
486 goto out_unlock_dirty
;
489 xfs_buf_delwri_queue(bp
, &isol
->buffers
);
491 goto out_unlock_dirty
;
496 * Prevent lookups now that we are past the point of no return.
498 dqp
->dq_flags
|= XFS_DQ_FREEING
;
501 ASSERT(dqp
->q_nrefs
== 0);
502 list_lru_isolate_move(lru
, &dqp
->q_lru
, &isol
->dispose
);
503 XFS_STATS_DEC(dqp
->q_mount
, xs_qm_dquot_unused
);
504 trace_xfs_dqreclaim_done(dqp
);
505 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqreclaims
);
509 trace_xfs_dqreclaim_busy(dqp
);
510 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqreclaim_misses
);
514 trace_xfs_dqreclaim_busy(dqp
);
515 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqreclaim_misses
);
523 struct shrinker
*shrink
,
524 struct shrink_control
*sc
)
526 struct xfs_quotainfo
*qi
= container_of(shrink
,
527 struct xfs_quotainfo
, qi_shrinker
);
528 struct xfs_qm_isolate isol
;
532 if ((sc
->gfp_mask
& (__GFP_FS
|__GFP_DIRECT_RECLAIM
)) != (__GFP_FS
|__GFP_DIRECT_RECLAIM
))
535 INIT_LIST_HEAD(&isol
.buffers
);
536 INIT_LIST_HEAD(&isol
.dispose
);
538 freed
= list_lru_shrink_walk(&qi
->qi_lru
, sc
,
539 xfs_qm_dquot_isolate
, &isol
);
541 error
= xfs_buf_delwri_submit(&isol
.buffers
);
543 xfs_warn(NULL
, "%s: dquot reclaim failed", __func__
);
545 while (!list_empty(&isol
.dispose
)) {
546 struct xfs_dquot
*dqp
;
548 dqp
= list_first_entry(&isol
.dispose
, struct xfs_dquot
, q_lru
);
549 list_del_init(&dqp
->q_lru
);
550 xfs_qm_dqfree_one(dqp
);
558 struct shrinker
*shrink
,
559 struct shrink_control
*sc
)
561 struct xfs_quotainfo
*qi
= container_of(shrink
,
562 struct xfs_quotainfo
, qi_shrinker
);
564 return list_lru_shrink_count(&qi
->qi_lru
, sc
);
571 xfs_quotainfo_t
*qinf
)
574 struct xfs_def_quota
*defq
;
577 error
= xfs_qm_dqread(mp
, 0, type
, XFS_QMOPT_DOWARN
, &dqp
);
580 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
582 defq
= xfs_get_defquota(dqp
, qinf
);
585 * Timers and warnings have been already set, let's just set the
586 * default limits for this quota type
588 defq
->bhardlimit
= be64_to_cpu(ddqp
->d_blk_hardlimit
);
589 defq
->bsoftlimit
= be64_to_cpu(ddqp
->d_blk_softlimit
);
590 defq
->ihardlimit
= be64_to_cpu(ddqp
->d_ino_hardlimit
);
591 defq
->isoftlimit
= be64_to_cpu(ddqp
->d_ino_softlimit
);
592 defq
->rtbhardlimit
= be64_to_cpu(ddqp
->d_rtb_hardlimit
);
593 defq
->rtbsoftlimit
= be64_to_cpu(ddqp
->d_rtb_softlimit
);
594 xfs_qm_dqdestroy(dqp
);
599 * This initializes all the quota information that's kept in the
603 xfs_qm_init_quotainfo(
606 xfs_quotainfo_t
*qinf
;
610 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
612 qinf
= mp
->m_quotainfo
= kmem_zalloc(sizeof(xfs_quotainfo_t
), KM_SLEEP
);
614 error
= list_lru_init(&qinf
->qi_lru
);
619 * See if quotainodes are setup, and if not, allocate them,
620 * and change the superblock accordingly.
622 error
= xfs_qm_init_quotainos(mp
);
626 INIT_RADIX_TREE(&qinf
->qi_uquota_tree
, GFP_NOFS
);
627 INIT_RADIX_TREE(&qinf
->qi_gquota_tree
, GFP_NOFS
);
628 INIT_RADIX_TREE(&qinf
->qi_pquota_tree
, GFP_NOFS
);
629 mutex_init(&qinf
->qi_tree_lock
);
631 /* mutex used to serialize quotaoffs */
632 mutex_init(&qinf
->qi_quotaofflock
);
634 /* Precalc some constants */
635 qinf
->qi_dqchunklen
= XFS_FSB_TO_BB(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
636 qinf
->qi_dqperchunk
= xfs_calc_dquots_per_chunk(qinf
->qi_dqchunklen
);
638 mp
->m_qflags
|= (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_CHKD
);
641 * We try to get the limits from the superuser's limits fields.
642 * This is quite hacky, but it is standard quota practice.
644 * Since we may not have done a quotacheck by this point, just read
645 * the dquot without attaching it to any hashtables or lists.
647 * Timers and warnings are globally set by the first timer found in
648 * user/group/proj quota types, otherwise a default value is used.
649 * This should be split into different fields per quota type.
651 error
= xfs_qm_dqread(mp
, 0,
652 XFS_IS_UQUOTA_RUNNING(mp
) ? XFS_DQ_USER
:
653 (XFS_IS_GQUOTA_RUNNING(mp
) ? XFS_DQ_GROUP
:
655 XFS_QMOPT_DOWARN
, &dqp
);
658 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
661 * The warnings and timers set the grace period given to
662 * a user or group before he or she can not perform any
663 * more writing. If it is zero, a default is used.
665 qinf
->qi_btimelimit
= ddqp
->d_btimer
?
666 be32_to_cpu(ddqp
->d_btimer
) : XFS_QM_BTIMELIMIT
;
667 qinf
->qi_itimelimit
= ddqp
->d_itimer
?
668 be32_to_cpu(ddqp
->d_itimer
) : XFS_QM_ITIMELIMIT
;
669 qinf
->qi_rtbtimelimit
= ddqp
->d_rtbtimer
?
670 be32_to_cpu(ddqp
->d_rtbtimer
) : XFS_QM_RTBTIMELIMIT
;
671 qinf
->qi_bwarnlimit
= ddqp
->d_bwarns
?
672 be16_to_cpu(ddqp
->d_bwarns
) : XFS_QM_BWARNLIMIT
;
673 qinf
->qi_iwarnlimit
= ddqp
->d_iwarns
?
674 be16_to_cpu(ddqp
->d_iwarns
) : XFS_QM_IWARNLIMIT
;
675 qinf
->qi_rtbwarnlimit
= ddqp
->d_rtbwarns
?
676 be16_to_cpu(ddqp
->d_rtbwarns
) : XFS_QM_RTBWARNLIMIT
;
677 xfs_qm_dqdestroy(dqp
);
679 qinf
->qi_btimelimit
= XFS_QM_BTIMELIMIT
;
680 qinf
->qi_itimelimit
= XFS_QM_ITIMELIMIT
;
681 qinf
->qi_rtbtimelimit
= XFS_QM_RTBTIMELIMIT
;
682 qinf
->qi_bwarnlimit
= XFS_QM_BWARNLIMIT
;
683 qinf
->qi_iwarnlimit
= XFS_QM_IWARNLIMIT
;
684 qinf
->qi_rtbwarnlimit
= XFS_QM_RTBWARNLIMIT
;
687 if (XFS_IS_UQUOTA_RUNNING(mp
))
688 xfs_qm_set_defquota(mp
, XFS_DQ_USER
, qinf
);
689 if (XFS_IS_GQUOTA_RUNNING(mp
))
690 xfs_qm_set_defquota(mp
, XFS_DQ_GROUP
, qinf
);
691 if (XFS_IS_PQUOTA_RUNNING(mp
))
692 xfs_qm_set_defquota(mp
, XFS_DQ_PROJ
, qinf
);
694 qinf
->qi_shrinker
.count_objects
= xfs_qm_shrink_count
;
695 qinf
->qi_shrinker
.scan_objects
= xfs_qm_shrink_scan
;
696 qinf
->qi_shrinker
.seeks
= DEFAULT_SEEKS
;
697 qinf
->qi_shrinker
.flags
= SHRINKER_NUMA_AWARE
;
698 register_shrinker(&qinf
->qi_shrinker
);
702 list_lru_destroy(&qinf
->qi_lru
);
705 mp
->m_quotainfo
= NULL
;
711 * Gets called when unmounting a filesystem or when all quotas get
713 * This purges the quota inodes, destroys locks and frees itself.
716 xfs_qm_destroy_quotainfo(
721 qi
= mp
->m_quotainfo
;
724 unregister_shrinker(&qi
->qi_shrinker
);
725 list_lru_destroy(&qi
->qi_lru
);
727 if (qi
->qi_uquotaip
) {
728 IRELE(qi
->qi_uquotaip
);
729 qi
->qi_uquotaip
= NULL
; /* paranoia */
731 if (qi
->qi_gquotaip
) {
732 IRELE(qi
->qi_gquotaip
);
733 qi
->qi_gquotaip
= NULL
;
735 if (qi
->qi_pquotaip
) {
736 IRELE(qi
->qi_pquotaip
);
737 qi
->qi_pquotaip
= NULL
;
739 mutex_destroy(&qi
->qi_quotaofflock
);
741 mp
->m_quotainfo
= NULL
;
745 * Create an inode and return with a reference already taken, but unlocked
746 * This is how we create quota inodes
757 bool need_alloc
= true;
761 * With superblock that doesn't have separate pquotino, we
762 * share an inode between gquota and pquota. If the on-disk
763 * superblock has GQUOTA and the filesystem is now mounted
764 * with PQUOTA, just use sb_gquotino for sb_pquotino and
767 if (!xfs_sb_version_has_pquotino(&mp
->m_sb
) &&
768 (flags
& (XFS_QMOPT_PQUOTA
|XFS_QMOPT_GQUOTA
))) {
769 xfs_ino_t ino
= NULLFSINO
;
771 if ((flags
& XFS_QMOPT_PQUOTA
) &&
772 (mp
->m_sb
.sb_gquotino
!= NULLFSINO
)) {
773 ino
= mp
->m_sb
.sb_gquotino
;
774 ASSERT(mp
->m_sb
.sb_pquotino
== NULLFSINO
);
775 } else if ((flags
& XFS_QMOPT_GQUOTA
) &&
776 (mp
->m_sb
.sb_pquotino
!= NULLFSINO
)) {
777 ino
= mp
->m_sb
.sb_pquotino
;
778 ASSERT(mp
->m_sb
.sb_gquotino
== NULLFSINO
);
780 if (ino
!= NULLFSINO
) {
781 error
= xfs_iget(mp
, NULL
, ino
, 0, 0, ip
);
784 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
785 mp
->m_sb
.sb_pquotino
= NULLFSINO
;
790 error
= xfs_trans_alloc(mp
, &M_RES(mp
)->tr_create
,
791 XFS_QM_QINOCREATE_SPACE_RES(mp
), 0, 0, &tp
);
796 error
= xfs_dir_ialloc(&tp
, NULL
, S_IFREG
, 1, 0, 0, 1, ip
,
799 xfs_trans_cancel(tp
);
805 * Make the changes in the superblock, and log those too.
806 * sbfields arg may contain fields other than *QUOTINO;
807 * VERSIONNUM for example.
809 spin_lock(&mp
->m_sb_lock
);
810 if (flags
& XFS_QMOPT_SBVERSION
) {
811 ASSERT(!xfs_sb_version_hasquota(&mp
->m_sb
));
813 xfs_sb_version_addquota(&mp
->m_sb
);
814 mp
->m_sb
.sb_uquotino
= NULLFSINO
;
815 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
816 mp
->m_sb
.sb_pquotino
= NULLFSINO
;
818 /* qflags will get updated fully _after_ quotacheck */
819 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_ALL_QUOTA_ACCT
;
821 if (flags
& XFS_QMOPT_UQUOTA
)
822 mp
->m_sb
.sb_uquotino
= (*ip
)->i_ino
;
823 else if (flags
& XFS_QMOPT_GQUOTA
)
824 mp
->m_sb
.sb_gquotino
= (*ip
)->i_ino
;
826 mp
->m_sb
.sb_pquotino
= (*ip
)->i_ino
;
827 spin_unlock(&mp
->m_sb_lock
);
830 error
= xfs_trans_commit(tp
);
832 ASSERT(XFS_FORCED_SHUTDOWN(mp
));
833 xfs_alert(mp
, "%s failed (error %d)!", __func__
, error
);
836 xfs_finish_inode_setup(*ip
);
842 xfs_qm_reset_dqcounts(
848 struct xfs_dqblk
*dqb
;
851 trace_xfs_reset_dqcounts(bp
, _RET_IP_
);
854 * Reset all counters and timers. They'll be
855 * started afresh by xfs_qm_quotacheck.
858 j
= (int)XFS_FSB_TO_B(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
) /
860 ASSERT(mp
->m_quotainfo
->qi_dqperchunk
== j
);
863 for (j
= 0; j
< mp
->m_quotainfo
->qi_dqperchunk
; j
++) {
864 struct xfs_disk_dquot
*ddq
;
866 ddq
= (struct xfs_disk_dquot
*)&dqb
[j
];
869 * Do a sanity check, and if needed, repair the dqblk. Don't
870 * output any warnings because it's perfectly possible to
871 * find uninitialised dquot blks. See comment in xfs_dqcheck.
873 xfs_dqcheck(mp
, ddq
, id
+j
, type
, XFS_QMOPT_DQREPAIR
,
876 * Reset type in case we are reusing group quota file for
877 * project quotas or vice versa
890 if (xfs_sb_version_hascrc(&mp
->m_sb
)) {
891 xfs_update_cksum((char *)&dqb
[j
],
892 sizeof(struct xfs_dqblk
),
900 struct xfs_mount
*mp
,
903 xfs_filblks_t blkcnt
,
905 struct list_head
*buffer_list
)
912 type
= flags
& XFS_QMOPT_UQUOTA
? XFS_DQ_USER
:
913 (flags
& XFS_QMOPT_PQUOTA
? XFS_DQ_PROJ
: XFS_DQ_GROUP
);
917 * Blkcnt arg can be a very big number, and might even be
918 * larger than the log itself. So, we have to break it up into
919 * manageable-sized transactions.
920 * Note that we don't start a permanent transaction here; we might
921 * not be able to get a log reservation for the whole thing up front,
922 * and we don't really care to either, because we just discard
923 * everything if we were to crash in the middle of this loop.
926 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
927 XFS_FSB_TO_DADDR(mp
, bno
),
928 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
,
932 * CRC and validation errors will return a EFSCORRUPTED here. If
933 * this occurs, re-read without CRC validation so that we can
934 * repair the damage via xfs_qm_reset_dqcounts(). This process
935 * will leave a trace in the log indicating corruption has
938 if (error
== -EFSCORRUPTED
) {
939 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
940 XFS_FSB_TO_DADDR(mp
, bno
),
941 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
,
949 * A corrupt buffer might not have a verifier attached, so
950 * make sure we have the correct one attached before writeback
953 bp
->b_ops
= &xfs_dquot_buf_ops
;
954 xfs_qm_reset_dqcounts(mp
, bp
, firstid
, type
);
955 xfs_buf_delwri_queue(bp
, buffer_list
);
958 /* goto the next block. */
960 firstid
+= mp
->m_quotainfo
->qi_dqperchunk
;
967 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
968 * caller supplied function for every chunk of dquots that we find.
972 struct xfs_mount
*mp
,
973 struct xfs_inode
*qip
,
975 struct list_head
*buffer_list
)
977 struct xfs_bmbt_irec
*map
;
978 int i
, nmaps
; /* number of map entries */
979 int error
; /* return value */
980 xfs_fileoff_t lblkno
;
981 xfs_filblks_t maxlblkcnt
;
983 xfs_fsblock_t rablkno
;
984 xfs_filblks_t rablkcnt
;
988 * This looks racy, but we can't keep an inode lock across a
989 * trans_reserve. But, this gets called during quotacheck, and that
990 * happens only at mount time which is single threaded.
992 if (qip
->i_d
.di_nblocks
== 0)
995 map
= kmem_alloc(XFS_DQITER_MAP_SIZE
* sizeof(*map
), KM_SLEEP
);
998 maxlblkcnt
= XFS_B_TO_FSB(mp
, mp
->m_super
->s_maxbytes
);
1002 nmaps
= XFS_DQITER_MAP_SIZE
;
1004 * We aren't changing the inode itself. Just changing
1005 * some of its data. No new blocks are added here, and
1006 * the inode is never added to the transaction.
1008 lock_mode
= xfs_ilock_data_map_shared(qip
);
1009 error
= xfs_bmapi_read(qip
, lblkno
, maxlblkcnt
- lblkno
,
1011 xfs_iunlock(qip
, lock_mode
);
1015 ASSERT(nmaps
<= XFS_DQITER_MAP_SIZE
);
1016 for (i
= 0; i
< nmaps
; i
++) {
1017 ASSERT(map
[i
].br_startblock
!= DELAYSTARTBLOCK
);
1018 ASSERT(map
[i
].br_blockcount
);
1021 lblkno
+= map
[i
].br_blockcount
;
1023 if (map
[i
].br_startblock
== HOLESTARTBLOCK
)
1026 firstid
= (xfs_dqid_t
) map
[i
].br_startoff
*
1027 mp
->m_quotainfo
->qi_dqperchunk
;
1029 * Do a read-ahead on the next extent.
1031 if ((i
+1 < nmaps
) &&
1032 (map
[i
+1].br_startblock
!= HOLESTARTBLOCK
)) {
1033 rablkcnt
= map
[i
+1].br_blockcount
;
1034 rablkno
= map
[i
+1].br_startblock
;
1035 while (rablkcnt
--) {
1036 xfs_buf_readahead(mp
->m_ddev_targp
,
1037 XFS_FSB_TO_DADDR(mp
, rablkno
),
1038 mp
->m_quotainfo
->qi_dqchunklen
,
1039 &xfs_dquot_buf_ops
);
1044 * Iterate thru all the blks in the extent and
1045 * reset the counters of all the dquots inside them.
1047 error
= xfs_qm_dqiter_bufs(mp
, firstid
,
1048 map
[i
].br_startblock
,
1049 map
[i
].br_blockcount
,
1050 flags
, buffer_list
);
1054 } while (nmaps
> 0);
1062 * Called by dqusage_adjust in doing a quotacheck.
1064 * Given the inode, and a dquot id this updates both the incore dqout as well
1065 * as the buffer copy. This is so that once the quotacheck is done, we can
1066 * just log all the buffers, as opposed to logging numerous updates to
1067 * individual dquots.
1070 xfs_qm_quotacheck_dqadjust(
1071 struct xfs_inode
*ip
,
1077 struct xfs_mount
*mp
= ip
->i_mount
;
1078 struct xfs_dquot
*dqp
;
1081 error
= xfs_qm_dqget(mp
, ip
, id
, type
,
1082 XFS_QMOPT_DQALLOC
| XFS_QMOPT_DOWARN
, &dqp
);
1085 * Shouldn't be able to turn off quotas here.
1087 ASSERT(error
!= -ESRCH
);
1088 ASSERT(error
!= -ENOENT
);
1092 trace_xfs_dqadjust(dqp
);
1095 * Adjust the inode count and the block count to reflect this inode's
1098 be64_add_cpu(&dqp
->q_core
.d_icount
, 1);
1099 dqp
->q_res_icount
++;
1101 be64_add_cpu(&dqp
->q_core
.d_bcount
, nblks
);
1102 dqp
->q_res_bcount
+= nblks
;
1105 be64_add_cpu(&dqp
->q_core
.d_rtbcount
, rtblks
);
1106 dqp
->q_res_rtbcount
+= rtblks
;
1110 * Set default limits, adjust timers (since we changed usages)
1112 * There are no timers for the default values set in the root dquot.
1114 if (dqp
->q_core
.d_id
) {
1115 xfs_qm_adjust_dqlimits(mp
, dqp
);
1116 xfs_qm_adjust_dqtimers(mp
, &dqp
->q_core
);
1119 dqp
->dq_flags
|= XFS_DQ_DIRTY
;
1125 * callback routine supplied to bulkstat(). Given an inumber, find its
1126 * dquots and update them to account for resources taken by that inode.
1130 xfs_qm_dqusage_adjust(
1131 xfs_mount_t
*mp
, /* mount point for filesystem */
1132 xfs_ino_t ino
, /* inode number to get data for */
1133 void __user
*buffer
, /* not used */
1134 int ubsize
, /* not used */
1135 int *ubused
, /* not used */
1136 int *res
) /* result code value */
1140 xfs_filblks_t rtblks
= 0; /* total rt blks */
1143 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1146 * rootino must have its resources accounted for, not so with the quota
1149 if (xfs_is_quota_inode(&mp
->m_sb
, ino
)) {
1150 *res
= BULKSTAT_RV_NOTHING
;
1155 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1156 * interface expects the inode to be exclusively locked because that's
1157 * the case in all other instances. It's OK that we do this because
1158 * quotacheck is done only at mount time.
1160 error
= xfs_iget(mp
, NULL
, ino
, XFS_IGET_DONTCACHE
, XFS_ILOCK_EXCL
,
1163 *res
= BULKSTAT_RV_NOTHING
;
1167 ASSERT(ip
->i_delayed_blks
== 0);
1169 if (XFS_IS_REALTIME_INODE(ip
)) {
1170 struct xfs_ifork
*ifp
= XFS_IFORK_PTR(ip
, XFS_DATA_FORK
);
1172 if (!(ifp
->if_flags
& XFS_IFEXTENTS
)) {
1173 error
= xfs_iread_extents(NULL
, ip
, XFS_DATA_FORK
);
1178 xfs_bmap_count_leaves(ifp
, &rtblks
);
1181 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
- rtblks
;
1184 * Add the (disk blocks and inode) resources occupied by this
1185 * inode to its dquots. We do this adjustment in the incore dquot,
1186 * and also copy the changes to its buffer.
1187 * We don't care about putting these changes in a transaction
1188 * envelope because if we crash in the middle of a 'quotacheck'
1189 * we have to start from the beginning anyway.
1190 * Once we're done, we'll log all the dquot bufs.
1192 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1193 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1195 if (XFS_IS_UQUOTA_ON(mp
)) {
1196 error
= xfs_qm_quotacheck_dqadjust(ip
, ip
->i_d
.di_uid
,
1197 XFS_DQ_USER
, nblks
, rtblks
);
1202 if (XFS_IS_GQUOTA_ON(mp
)) {
1203 error
= xfs_qm_quotacheck_dqadjust(ip
, ip
->i_d
.di_gid
,
1204 XFS_DQ_GROUP
, nblks
, rtblks
);
1209 if (XFS_IS_PQUOTA_ON(mp
)) {
1210 error
= xfs_qm_quotacheck_dqadjust(ip
, xfs_get_projid(ip
),
1211 XFS_DQ_PROJ
, nblks
, rtblks
);
1216 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1218 *res
= BULKSTAT_RV_DIDONE
;
1222 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1224 *res
= BULKSTAT_RV_GIVEUP
;
1230 struct xfs_dquot
*dqp
,
1233 struct xfs_mount
*mp
= dqp
->q_mount
;
1234 struct list_head
*buffer_list
= data
;
1235 struct xfs_buf
*bp
= NULL
;
1239 if (dqp
->dq_flags
& XFS_DQ_FREEING
)
1241 if (!XFS_DQ_IS_DIRTY(dqp
))
1245 * The only way the dquot is already flush locked by the time quotacheck
1246 * gets here is if reclaim flushed it before the dqadjust walk dirtied
1247 * it for the final time. Quotacheck collects all dquot bufs in the
1248 * local delwri queue before dquots are dirtied, so reclaim can't have
1249 * possibly queued it for I/O. The only way out is to push the buffer to
1250 * cycle the flush lock.
1252 if (!xfs_dqflock_nowait(dqp
)) {
1253 /* buf is pinned in-core by delwri list */
1254 DEFINE_SINGLE_BUF_MAP(map
, dqp
->q_blkno
,
1255 mp
->m_quotainfo
->qi_dqchunklen
);
1256 bp
= _xfs_buf_find(mp
->m_ddev_targp
, &map
, 1, 0, NULL
);
1263 xfs_buf_delwri_pushbuf(bp
, buffer_list
);
1270 error
= xfs_qm_dqflush(dqp
, &bp
);
1274 xfs_buf_delwri_queue(bp
, buffer_list
);
1282 * Walk thru all the filesystem inodes and construct a consistent view
1283 * of the disk quota world. If the quotacheck fails, disable quotas.
1289 int done
, count
, error
, error2
;
1293 LIST_HEAD (buffer_list
);
1294 struct xfs_inode
*uip
= mp
->m_quotainfo
->qi_uquotaip
;
1295 struct xfs_inode
*gip
= mp
->m_quotainfo
->qi_gquotaip
;
1296 struct xfs_inode
*pip
= mp
->m_quotainfo
->qi_pquotaip
;
1303 ASSERT(uip
|| gip
|| pip
);
1304 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1306 xfs_notice(mp
, "Quotacheck needed: Please wait.");
1309 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1310 * their counters to zero. We need a clean slate.
1311 * We don't log our changes till later.
1314 error
= xfs_qm_dqiterate(mp
, uip
, XFS_QMOPT_UQUOTA
,
1318 flags
|= XFS_UQUOTA_CHKD
;
1322 error
= xfs_qm_dqiterate(mp
, gip
, XFS_QMOPT_GQUOTA
,
1326 flags
|= XFS_GQUOTA_CHKD
;
1330 error
= xfs_qm_dqiterate(mp
, pip
, XFS_QMOPT_PQUOTA
,
1334 flags
|= XFS_PQUOTA_CHKD
;
1339 * Iterate thru all the inodes in the file system,
1340 * adjusting the corresponding dquot counters in core.
1342 error
= xfs_bulkstat(mp
, &lastino
, &count
,
1343 xfs_qm_dqusage_adjust
,
1344 structsz
, NULL
, &done
);
1351 * We've made all the changes that we need to make incore. Flush them
1352 * down to disk buffers if everything was updated successfully.
1354 if (XFS_IS_UQUOTA_ON(mp
)) {
1355 error
= xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_flush_one
,
1358 if (XFS_IS_GQUOTA_ON(mp
)) {
1359 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_flush_one
,
1364 if (XFS_IS_PQUOTA_ON(mp
)) {
1365 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_flush_one
,
1371 error2
= xfs_buf_delwri_submit(&buffer_list
);
1376 * We can get this error if we couldn't do a dquot allocation inside
1377 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1378 * dirty dquots that might be cached, we just want to get rid of them
1379 * and turn quotaoff. The dquots won't be attached to any of the inodes
1380 * at this point (because we intentionally didn't in dqget_noattach).
1383 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
1388 * If one type of quotas is off, then it will lose its
1389 * quotachecked status, since we won't be doing accounting for
1390 * that type anymore.
1392 mp
->m_qflags
&= ~XFS_ALL_QUOTA_CHKD
;
1393 mp
->m_qflags
|= flags
;
1396 xfs_buf_delwri_cancel(&buffer_list
);
1400 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1403 * We must turn off quotas.
1405 ASSERT(mp
->m_quotainfo
!= NULL
);
1406 xfs_qm_destroy_quotainfo(mp
);
1407 if (xfs_mount_reset_sbqflags(mp
)) {
1409 "Quotacheck: Failed to reset quota flags.");
1412 xfs_notice(mp
, "Quotacheck: Done.");
1417 * This is called from xfs_mountfs to start quotas and initialize all
1418 * necessary data structures like quotainfo. This is also responsible for
1419 * running a quotacheck as necessary. We are guaranteed that the superblock
1420 * is consistently read in at this point.
1422 * If we fail here, the mount will continue with quota turned off. We don't
1423 * need to inidicate success or failure at all.
1426 xfs_qm_mount_quotas(
1427 struct xfs_mount
*mp
)
1433 * If quotas on realtime volumes is not supported, we disable
1434 * quotas immediately.
1436 if (mp
->m_sb
.sb_rextents
) {
1437 xfs_notice(mp
, "Cannot turn on quotas for realtime filesystem");
1442 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1445 * Allocate the quotainfo structure inside the mount struct, and
1446 * create quotainode(s), and change/rev superblock if necessary.
1448 error
= xfs_qm_init_quotainfo(mp
);
1451 * We must turn off quotas.
1453 ASSERT(mp
->m_quotainfo
== NULL
);
1458 * If any of the quotas are not consistent, do a quotacheck.
1460 if (XFS_QM_NEED_QUOTACHECK(mp
)) {
1461 error
= xfs_qm_quotacheck(mp
);
1463 /* Quotacheck failed and disabled quotas. */
1468 * If one type of quotas is off, then it will lose its
1469 * quotachecked status, since we won't be doing accounting for
1470 * that type anymore.
1472 if (!XFS_IS_UQUOTA_ON(mp
))
1473 mp
->m_qflags
&= ~XFS_UQUOTA_CHKD
;
1474 if (!XFS_IS_GQUOTA_ON(mp
))
1475 mp
->m_qflags
&= ~XFS_GQUOTA_CHKD
;
1476 if (!XFS_IS_PQUOTA_ON(mp
))
1477 mp
->m_qflags
&= ~XFS_PQUOTA_CHKD
;
1481 * We actually don't have to acquire the m_sb_lock at all.
1482 * This can only be called from mount, and that's single threaded. XXX
1484 spin_lock(&mp
->m_sb_lock
);
1485 sbf
= mp
->m_sb
.sb_qflags
;
1486 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
;
1487 spin_unlock(&mp
->m_sb_lock
);
1489 if (sbf
!= (mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
)) {
1490 if (xfs_sync_sb(mp
, false)) {
1492 * We could only have been turning quotas off.
1493 * We aren't in very good shape actually because
1494 * the incore structures are convinced that quotas are
1495 * off, but the on disk superblock doesn't know that !
1497 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp
)));
1498 xfs_alert(mp
, "%s: Superblock update failed!",
1504 xfs_warn(mp
, "Failed to initialize disk quotas.");
1510 * This is called after the superblock has been read in and we're ready to
1511 * iget the quota inodes.
1514 xfs_qm_init_quotainos(
1517 struct xfs_inode
*uip
= NULL
;
1518 struct xfs_inode
*gip
= NULL
;
1519 struct xfs_inode
*pip
= NULL
;
1523 ASSERT(mp
->m_quotainfo
);
1526 * Get the uquota and gquota inodes
1528 if (xfs_sb_version_hasquota(&mp
->m_sb
)) {
1529 if (XFS_IS_UQUOTA_ON(mp
) &&
1530 mp
->m_sb
.sb_uquotino
!= NULLFSINO
) {
1531 ASSERT(mp
->m_sb
.sb_uquotino
> 0);
1532 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_uquotino
,
1537 if (XFS_IS_GQUOTA_ON(mp
) &&
1538 mp
->m_sb
.sb_gquotino
!= NULLFSINO
) {
1539 ASSERT(mp
->m_sb
.sb_gquotino
> 0);
1540 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_gquotino
,
1545 if (XFS_IS_PQUOTA_ON(mp
) &&
1546 mp
->m_sb
.sb_pquotino
!= NULLFSINO
) {
1547 ASSERT(mp
->m_sb
.sb_pquotino
> 0);
1548 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_pquotino
,
1554 flags
|= XFS_QMOPT_SBVERSION
;
1558 * Create the three inodes, if they don't exist already. The changes
1559 * made above will get added to a transaction and logged in one of
1560 * the qino_alloc calls below. If the device is readonly,
1561 * temporarily switch to read-write to do this.
1563 if (XFS_IS_UQUOTA_ON(mp
) && uip
== NULL
) {
1564 error
= xfs_qm_qino_alloc(mp
, &uip
,
1565 flags
| XFS_QMOPT_UQUOTA
);
1569 flags
&= ~XFS_QMOPT_SBVERSION
;
1571 if (XFS_IS_GQUOTA_ON(mp
) && gip
== NULL
) {
1572 error
= xfs_qm_qino_alloc(mp
, &gip
,
1573 flags
| XFS_QMOPT_GQUOTA
);
1577 flags
&= ~XFS_QMOPT_SBVERSION
;
1579 if (XFS_IS_PQUOTA_ON(mp
) && pip
== NULL
) {
1580 error
= xfs_qm_qino_alloc(mp
, &pip
,
1581 flags
| XFS_QMOPT_PQUOTA
);
1586 mp
->m_quotainfo
->qi_uquotaip
= uip
;
1587 mp
->m_quotainfo
->qi_gquotaip
= gip
;
1588 mp
->m_quotainfo
->qi_pquotaip
= pip
;
1604 struct xfs_dquot
*dqp
)
1606 struct xfs_mount
*mp
= dqp
->q_mount
;
1607 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
1609 mutex_lock(&qi
->qi_tree_lock
);
1610 radix_tree_delete(xfs_dquot_tree(qi
, dqp
->q_core
.d_flags
),
1611 be32_to_cpu(dqp
->q_core
.d_id
));
1614 mutex_unlock(&qi
->qi_tree_lock
);
1616 xfs_qm_dqdestroy(dqp
);
1619 /* --------------- utility functions for vnodeops ---------------- */
1623 * Given an inode, a uid, gid and prid make sure that we have
1624 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1625 * quotas by creating this file.
1626 * This also attaches dquot(s) to the given inode after locking it,
1627 * and returns the dquots corresponding to the uid and/or gid.
1629 * in : inode (unlocked)
1630 * out : udquot, gdquot with references taken and unlocked
1634 struct xfs_inode
*ip
,
1639 struct xfs_dquot
**O_udqpp
,
1640 struct xfs_dquot
**O_gdqpp
,
1641 struct xfs_dquot
**O_pdqpp
)
1643 struct xfs_mount
*mp
= ip
->i_mount
;
1644 struct xfs_dquot
*uq
= NULL
;
1645 struct xfs_dquot
*gq
= NULL
;
1646 struct xfs_dquot
*pq
= NULL
;
1650 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1653 lockflags
= XFS_ILOCK_EXCL
;
1654 xfs_ilock(ip
, lockflags
);
1656 if ((flags
& XFS_QMOPT_INHERIT
) && XFS_INHERIT_GID(ip
))
1657 gid
= ip
->i_d
.di_gid
;
1660 * Attach the dquot(s) to this inode, doing a dquot allocation
1661 * if necessary. The dquot(s) will not be locked.
1663 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
1664 error
= xfs_qm_dqattach_locked(ip
, XFS_QMOPT_DQALLOC
);
1666 xfs_iunlock(ip
, lockflags
);
1671 if ((flags
& XFS_QMOPT_UQUOTA
) && XFS_IS_UQUOTA_ON(mp
)) {
1672 if (ip
->i_d
.di_uid
!= uid
) {
1674 * What we need is the dquot that has this uid, and
1675 * if we send the inode to dqget, the uid of the inode
1676 * takes priority over what's sent in the uid argument.
1677 * We must unlock inode here before calling dqget if
1678 * we're not sending the inode, because otherwise
1679 * we'll deadlock by doing trans_reserve while
1682 xfs_iunlock(ip
, lockflags
);
1683 error
= xfs_qm_dqget(mp
, NULL
, uid
,
1689 ASSERT(error
!= -ENOENT
);
1693 * Get the ilock in the right order.
1696 lockflags
= XFS_ILOCK_SHARED
;
1697 xfs_ilock(ip
, lockflags
);
1700 * Take an extra reference, because we'll return
1703 ASSERT(ip
->i_udquot
);
1704 uq
= xfs_qm_dqhold(ip
->i_udquot
);
1707 if ((flags
& XFS_QMOPT_GQUOTA
) && XFS_IS_GQUOTA_ON(mp
)) {
1708 if (ip
->i_d
.di_gid
!= gid
) {
1709 xfs_iunlock(ip
, lockflags
);
1710 error
= xfs_qm_dqget(mp
, NULL
, gid
,
1716 ASSERT(error
!= -ENOENT
);
1720 lockflags
= XFS_ILOCK_SHARED
;
1721 xfs_ilock(ip
, lockflags
);
1723 ASSERT(ip
->i_gdquot
);
1724 gq
= xfs_qm_dqhold(ip
->i_gdquot
);
1727 if ((flags
& XFS_QMOPT_PQUOTA
) && XFS_IS_PQUOTA_ON(mp
)) {
1728 if (xfs_get_projid(ip
) != prid
) {
1729 xfs_iunlock(ip
, lockflags
);
1730 error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)prid
,
1736 ASSERT(error
!= -ENOENT
);
1740 lockflags
= XFS_ILOCK_SHARED
;
1741 xfs_ilock(ip
, lockflags
);
1743 ASSERT(ip
->i_pdquot
);
1744 pq
= xfs_qm_dqhold(ip
->i_pdquot
);
1748 trace_xfs_dquot_dqalloc(ip
);
1750 xfs_iunlock(ip
, lockflags
);
1772 * Actually transfer ownership, and do dquot modifications.
1773 * These were already reserved.
1779 xfs_dquot_t
**IO_olddq
,
1782 xfs_dquot_t
*prevdq
;
1783 uint bfield
= XFS_IS_REALTIME_INODE(ip
) ?
1784 XFS_TRANS_DQ_RTBCOUNT
: XFS_TRANS_DQ_BCOUNT
;
1787 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1788 ASSERT(XFS_IS_QUOTA_RUNNING(ip
->i_mount
));
1793 ASSERT(prevdq
!= newdq
);
1795 xfs_trans_mod_dquot(tp
, prevdq
, bfield
, -(ip
->i_d
.di_nblocks
));
1796 xfs_trans_mod_dquot(tp
, prevdq
, XFS_TRANS_DQ_ICOUNT
, -1);
1798 /* the sparkling new dquot */
1799 xfs_trans_mod_dquot(tp
, newdq
, bfield
, ip
->i_d
.di_nblocks
);
1800 xfs_trans_mod_dquot(tp
, newdq
, XFS_TRANS_DQ_ICOUNT
, 1);
1803 * Take an extra reference, because the inode is going to keep
1804 * this dquot pointer even after the trans_commit.
1806 *IO_olddq
= xfs_qm_dqhold(newdq
);
1812 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1815 xfs_qm_vop_chown_reserve(
1816 struct xfs_trans
*tp
,
1817 struct xfs_inode
*ip
,
1818 struct xfs_dquot
*udqp
,
1819 struct xfs_dquot
*gdqp
,
1820 struct xfs_dquot
*pdqp
,
1823 struct xfs_mount
*mp
= ip
->i_mount
;
1824 uint delblks
, blkflags
, prjflags
= 0;
1825 struct xfs_dquot
*udq_unres
= NULL
;
1826 struct xfs_dquot
*gdq_unres
= NULL
;
1827 struct xfs_dquot
*pdq_unres
= NULL
;
1828 struct xfs_dquot
*udq_delblks
= NULL
;
1829 struct xfs_dquot
*gdq_delblks
= NULL
;
1830 struct xfs_dquot
*pdq_delblks
= NULL
;
1834 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
|XFS_ILOCK_SHARED
));
1835 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1837 delblks
= ip
->i_delayed_blks
;
1838 blkflags
= XFS_IS_REALTIME_INODE(ip
) ?
1839 XFS_QMOPT_RES_RTBLKS
: XFS_QMOPT_RES_REGBLKS
;
1841 if (XFS_IS_UQUOTA_ON(mp
) && udqp
&&
1842 ip
->i_d
.di_uid
!= be32_to_cpu(udqp
->q_core
.d_id
)) {
1845 * If there are delayed allocation blocks, then we have to
1846 * unreserve those from the old dquot, and add them to the
1850 ASSERT(ip
->i_udquot
);
1851 udq_unres
= ip
->i_udquot
;
1854 if (XFS_IS_GQUOTA_ON(ip
->i_mount
) && gdqp
&&
1855 ip
->i_d
.di_gid
!= be32_to_cpu(gdqp
->q_core
.d_id
)) {
1858 ASSERT(ip
->i_gdquot
);
1859 gdq_unres
= ip
->i_gdquot
;
1863 if (XFS_IS_PQUOTA_ON(ip
->i_mount
) && pdqp
&&
1864 xfs_get_projid(ip
) != be32_to_cpu(pdqp
->q_core
.d_id
)) {
1865 prjflags
= XFS_QMOPT_ENOSPC
;
1868 ASSERT(ip
->i_pdquot
);
1869 pdq_unres
= ip
->i_pdquot
;
1873 error
= xfs_trans_reserve_quota_bydquots(tp
, ip
->i_mount
,
1874 udq_delblks
, gdq_delblks
, pdq_delblks
,
1875 ip
->i_d
.di_nblocks
, 1,
1876 flags
| blkflags
| prjflags
);
1881 * Do the delayed blks reservations/unreservations now. Since, these
1882 * are done without the help of a transaction, if a reservation fails
1883 * its previous reservations won't be automatically undone by trans
1884 * code. So, we have to do it manually here.
1888 * Do the reservations first. Unreservation can't fail.
1890 ASSERT(udq_delblks
|| gdq_delblks
|| pdq_delblks
);
1891 ASSERT(udq_unres
|| gdq_unres
|| pdq_unres
);
1892 error
= xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
1893 udq_delblks
, gdq_delblks
, pdq_delblks
,
1894 (xfs_qcnt_t
)delblks
, 0,
1895 flags
| blkflags
| prjflags
);
1898 xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
1899 udq_unres
, gdq_unres
, pdq_unres
,
1900 -((xfs_qcnt_t
)delblks
), 0, blkflags
);
1907 xfs_qm_vop_rename_dqattach(
1908 struct xfs_inode
**i_tab
)
1910 struct xfs_mount
*mp
= i_tab
[0]->i_mount
;
1913 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1916 for (i
= 0; (i
< 4 && i_tab
[i
]); i
++) {
1917 struct xfs_inode
*ip
= i_tab
[i
];
1921 * Watch out for duplicate entries in the table.
1923 if (i
== 0 || ip
!= i_tab
[i
-1]) {
1924 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
1925 error
= xfs_qm_dqattach(ip
, 0);
1935 xfs_qm_vop_create_dqattach(
1936 struct xfs_trans
*tp
,
1937 struct xfs_inode
*ip
,
1938 struct xfs_dquot
*udqp
,
1939 struct xfs_dquot
*gdqp
,
1940 struct xfs_dquot
*pdqp
)
1942 struct xfs_mount
*mp
= tp
->t_mountp
;
1944 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1947 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1948 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1950 if (udqp
&& XFS_IS_UQUOTA_ON(mp
)) {
1951 ASSERT(ip
->i_udquot
== NULL
);
1952 ASSERT(ip
->i_d
.di_uid
== be32_to_cpu(udqp
->q_core
.d_id
));
1954 ip
->i_udquot
= xfs_qm_dqhold(udqp
);
1955 xfs_trans_mod_dquot(tp
, udqp
, XFS_TRANS_DQ_ICOUNT
, 1);
1957 if (gdqp
&& XFS_IS_GQUOTA_ON(mp
)) {
1958 ASSERT(ip
->i_gdquot
== NULL
);
1959 ASSERT(ip
->i_d
.di_gid
== be32_to_cpu(gdqp
->q_core
.d_id
));
1960 ip
->i_gdquot
= xfs_qm_dqhold(gdqp
);
1961 xfs_trans_mod_dquot(tp
, gdqp
, XFS_TRANS_DQ_ICOUNT
, 1);
1963 if (pdqp
&& XFS_IS_PQUOTA_ON(mp
)) {
1964 ASSERT(ip
->i_pdquot
== NULL
);
1965 ASSERT(xfs_get_projid(ip
) == be32_to_cpu(pdqp
->q_core
.d_id
));
1967 ip
->i_pdquot
= xfs_qm_dqhold(pdqp
);
1968 xfs_trans_mod_dquot(tp
, pdqp
, XFS_TRANS_DQ_ICOUNT
, 1);