1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_log_format.h"
11 #include "xfs_trans_resv.h"
14 #include "xfs_mount.h"
15 #include "xfs_inode.h"
16 #include "xfs_iwalk.h"
17 #include "xfs_quota.h"
19 #include "xfs_bmap_util.h"
20 #include "xfs_trans.h"
21 #include "xfs_trans_space.h"
23 #include "xfs_trace.h"
24 #include "xfs_icache.h"
25 #include "xfs_error.h"
28 * The global quota manager. There is only one of these for the entire
29 * system, _not_ one per file system. XQM keeps track of the overall
30 * quota functionality, including maintaining the freelist and hash
33 STATIC
int xfs_qm_init_quotainos(struct xfs_mount
*mp
);
34 STATIC
int xfs_qm_init_quotainfo(struct xfs_mount
*mp
);
36 STATIC
void xfs_qm_destroy_quotainos(struct xfs_quotainfo
*qi
);
37 STATIC
void xfs_qm_dqfree_one(struct xfs_dquot
*dqp
);
39 * We use the batch lookup interface to iterate over the dquots as it
40 * currently is the only interface into the radix tree code that allows
41 * fuzzy lookups instead of exact matches. Holding the lock over multiple
42 * operations is fine as all callers are used either during mount/umount
45 #define XFS_DQ_LOOKUP_BATCH 32
51 int (*execute
)(struct xfs_dquot
*dqp
, void *data
),
54 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
55 struct radix_tree_root
*tree
= xfs_dquot_tree(qi
, type
);
67 struct xfs_dquot
*batch
[XFS_DQ_LOOKUP_BATCH
];
71 mutex_lock(&qi
->qi_tree_lock
);
72 nr_found
= radix_tree_gang_lookup(tree
, (void **)batch
,
73 next_index
, XFS_DQ_LOOKUP_BATCH
);
75 mutex_unlock(&qi
->qi_tree_lock
);
79 for (i
= 0; i
< nr_found
; i
++) {
80 struct xfs_dquot
*dqp
= batch
[i
];
82 next_index
= be32_to_cpu(dqp
->q_core
.d_id
) + 1;
84 error
= execute(batch
[i
], data
);
85 if (error
== -EAGAIN
) {
89 if (error
&& last_error
!= -EFSCORRUPTED
)
93 mutex_unlock(&qi
->qi_tree_lock
);
95 /* bail out if the filesystem is corrupted. */
96 if (last_error
== -EFSCORRUPTED
) {
100 /* we're done if id overflows back to zero */
115 * Purge a dquot from all tracking data structures and free it.
119 struct xfs_dquot
*dqp
,
122 struct xfs_mount
*mp
= dqp
->q_mount
;
123 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
127 if ((dqp
->dq_flags
& XFS_DQ_FREEING
) || dqp
->q_nrefs
!= 0)
130 dqp
->dq_flags
|= XFS_DQ_FREEING
;
135 * If we are turning this type of quotas off, we don't care
136 * about the dirty metadata sitting in this dquot. OTOH, if
137 * we're unmounting, we do care, so we flush it and wait.
139 if (XFS_DQ_IS_DIRTY(dqp
)) {
140 struct xfs_buf
*bp
= NULL
;
143 * We don't care about getting disk errors here. We need
144 * to purge this dquot anyway, so we go ahead regardless.
146 error
= xfs_qm_dqflush(dqp
, &bp
);
148 error
= xfs_bwrite(bp
);
150 } else if (error
== -EAGAIN
) {
156 ASSERT(atomic_read(&dqp
->q_pincount
) == 0);
157 ASSERT(XFS_FORCED_SHUTDOWN(mp
) ||
158 !test_bit(XFS_LI_IN_AIL
, &dqp
->q_logitem
.qli_item
.li_flags
));
163 radix_tree_delete(xfs_dquot_tree(qi
, dqp
->q_core
.d_flags
),
164 be32_to_cpu(dqp
->q_core
.d_id
));
168 * We move dquots to the freelist as soon as their reference count
169 * hits zero, so it really should be on the freelist here.
171 ASSERT(!list_empty(&dqp
->q_lru
));
172 list_lru_del(&qi
->qi_lru
, &dqp
->q_lru
);
173 XFS_STATS_DEC(mp
, xs_qm_dquot_unused
);
175 xfs_qm_dqdestroy(dqp
);
184 * Purge the dquot cache.
188 struct xfs_mount
*mp
,
191 if (flags
& XFS_QMOPT_UQUOTA
)
192 xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_dqpurge
, NULL
);
193 if (flags
& XFS_QMOPT_GQUOTA
)
194 xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_dqpurge
, NULL
);
195 if (flags
& XFS_QMOPT_PQUOTA
)
196 xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_dqpurge
, NULL
);
200 * Just destroy the quotainfo structure.
204 struct xfs_mount
*mp
)
206 if (mp
->m_quotainfo
) {
207 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
208 xfs_qm_destroy_quotainfo(mp
);
213 * Called from the vfsops layer.
216 xfs_qm_unmount_quotas(
220 * Release the dquots that root inode, et al might be holding,
221 * before we flush quotas and blow away the quotainfo structure.
223 ASSERT(mp
->m_rootip
);
224 xfs_qm_dqdetach(mp
->m_rootip
);
226 xfs_qm_dqdetach(mp
->m_rbmip
);
228 xfs_qm_dqdetach(mp
->m_rsumip
);
231 * Release the quota inodes.
233 if (mp
->m_quotainfo
) {
234 if (mp
->m_quotainfo
->qi_uquotaip
) {
235 xfs_irele(mp
->m_quotainfo
->qi_uquotaip
);
236 mp
->m_quotainfo
->qi_uquotaip
= NULL
;
238 if (mp
->m_quotainfo
->qi_gquotaip
) {
239 xfs_irele(mp
->m_quotainfo
->qi_gquotaip
);
240 mp
->m_quotainfo
->qi_gquotaip
= NULL
;
242 if (mp
->m_quotainfo
->qi_pquotaip
) {
243 xfs_irele(mp
->m_quotainfo
->qi_pquotaip
);
244 mp
->m_quotainfo
->qi_pquotaip
= NULL
;
251 struct xfs_inode
*ip
,
255 struct xfs_dquot
**IO_idqpp
)
257 struct xfs_dquot
*dqp
;
260 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
264 * See if we already have it in the inode itself. IO_idqpp is &i_udquot
265 * or &i_gdquot. This made the code look weird, but made the logic a lot
270 trace_xfs_dqattach_found(dqp
);
275 * Find the dquot from somewhere. This bumps the reference count of
276 * dquot and returns it locked. This can return ENOENT if dquot didn't
277 * exist on disk and we didn't ask it to allocate; ESRCH if quotas got
278 * turned off suddenly.
280 error
= xfs_qm_dqget_inode(ip
, type
, doalloc
, &dqp
);
284 trace_xfs_dqattach_get(dqp
);
287 * dqget may have dropped and re-acquired the ilock, but it guarantees
288 * that the dquot returned is the one that should go in the inode.
296 xfs_qm_need_dqattach(
297 struct xfs_inode
*ip
)
299 struct xfs_mount
*mp
= ip
->i_mount
;
301 if (!XFS_IS_QUOTA_RUNNING(mp
))
303 if (!XFS_IS_QUOTA_ON(mp
))
305 if (!XFS_NOT_DQATTACHED(mp
, ip
))
307 if (xfs_is_quota_inode(&mp
->m_sb
, ip
->i_ino
))
313 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
315 * If @doalloc is true, the dquot(s) will be allocated if needed.
316 * Inode may get unlocked and relocked in here, and the caller must deal with
320 xfs_qm_dqattach_locked(
324 xfs_mount_t
*mp
= ip
->i_mount
;
327 if (!xfs_qm_need_dqattach(ip
))
330 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
332 if (XFS_IS_UQUOTA_ON(mp
) && !ip
->i_udquot
) {
333 error
= xfs_qm_dqattach_one(ip
, i_uid_read(VFS_I(ip
)),
334 XFS_DQ_USER
, doalloc
, &ip
->i_udquot
);
337 ASSERT(ip
->i_udquot
);
340 if (XFS_IS_GQUOTA_ON(mp
) && !ip
->i_gdquot
) {
341 error
= xfs_qm_dqattach_one(ip
, i_gid_read(VFS_I(ip
)),
342 XFS_DQ_GROUP
, doalloc
, &ip
->i_gdquot
);
345 ASSERT(ip
->i_gdquot
);
348 if (XFS_IS_PQUOTA_ON(mp
) && !ip
->i_pdquot
) {
349 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_projid
, XFS_DQ_PROJ
,
350 doalloc
, &ip
->i_pdquot
);
353 ASSERT(ip
->i_pdquot
);
358 * Don't worry about the dquots that we may have attached before any
359 * error - they'll get detached later if it has not already been done.
361 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
367 struct xfs_inode
*ip
)
371 if (!xfs_qm_need_dqattach(ip
))
374 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
375 error
= xfs_qm_dqattach_locked(ip
, false);
376 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
382 * Release dquots (and their references) if any.
383 * The inode should be locked EXCL except when this's called by
390 if (!(ip
->i_udquot
|| ip
->i_gdquot
|| ip
->i_pdquot
))
393 trace_xfs_dquot_dqdetach(ip
);
395 ASSERT(!xfs_is_quota_inode(&ip
->i_mount
->m_sb
, ip
->i_ino
));
397 xfs_qm_dqrele(ip
->i_udquot
);
401 xfs_qm_dqrele(ip
->i_gdquot
);
405 xfs_qm_dqrele(ip
->i_pdquot
);
410 struct xfs_qm_isolate
{
411 struct list_head buffers
;
412 struct list_head dispose
;
415 static enum lru_status
416 xfs_qm_dquot_isolate(
417 struct list_head
*item
,
418 struct list_lru_one
*lru
,
419 spinlock_t
*lru_lock
,
421 __releases(lru_lock
) __acquires(lru_lock
)
423 struct xfs_dquot
*dqp
= container_of(item
,
424 struct xfs_dquot
, q_lru
);
425 struct xfs_qm_isolate
*isol
= arg
;
427 if (!xfs_dqlock_nowait(dqp
))
431 * This dquot has acquired a reference in the meantime remove it from
432 * the freelist and try again.
436 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqwants
);
438 trace_xfs_dqreclaim_want(dqp
);
439 list_lru_isolate(lru
, &dqp
->q_lru
);
440 XFS_STATS_DEC(dqp
->q_mount
, xs_qm_dquot_unused
);
445 * If the dquot is dirty, flush it. If it's already being flushed, just
446 * skip it so there is time for the IO to complete before we try to
447 * reclaim it again on the next LRU pass.
449 if (!xfs_dqflock_nowait(dqp
)) {
454 if (XFS_DQ_IS_DIRTY(dqp
)) {
455 struct xfs_buf
*bp
= NULL
;
458 trace_xfs_dqreclaim_dirty(dqp
);
460 /* we have to drop the LRU lock to flush the dquot */
461 spin_unlock(lru_lock
);
463 error
= xfs_qm_dqflush(dqp
, &bp
);
465 goto out_unlock_dirty
;
467 xfs_buf_delwri_queue(bp
, &isol
->buffers
);
469 goto out_unlock_dirty
;
474 * Prevent lookups now that we are past the point of no return.
476 dqp
->dq_flags
|= XFS_DQ_FREEING
;
479 ASSERT(dqp
->q_nrefs
== 0);
480 list_lru_isolate_move(lru
, &dqp
->q_lru
, &isol
->dispose
);
481 XFS_STATS_DEC(dqp
->q_mount
, xs_qm_dquot_unused
);
482 trace_xfs_dqreclaim_done(dqp
);
483 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqreclaims
);
487 trace_xfs_dqreclaim_busy(dqp
);
488 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqreclaim_misses
);
492 trace_xfs_dqreclaim_busy(dqp
);
493 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqreclaim_misses
);
501 struct shrinker
*shrink
,
502 struct shrink_control
*sc
)
504 struct xfs_quotainfo
*qi
= container_of(shrink
,
505 struct xfs_quotainfo
, qi_shrinker
);
506 struct xfs_qm_isolate isol
;
510 if ((sc
->gfp_mask
& (__GFP_FS
|__GFP_DIRECT_RECLAIM
)) != (__GFP_FS
|__GFP_DIRECT_RECLAIM
))
513 INIT_LIST_HEAD(&isol
.buffers
);
514 INIT_LIST_HEAD(&isol
.dispose
);
516 freed
= list_lru_shrink_walk(&qi
->qi_lru
, sc
,
517 xfs_qm_dquot_isolate
, &isol
);
519 error
= xfs_buf_delwri_submit(&isol
.buffers
);
521 xfs_warn(NULL
, "%s: dquot reclaim failed", __func__
);
523 while (!list_empty(&isol
.dispose
)) {
524 struct xfs_dquot
*dqp
;
526 dqp
= list_first_entry(&isol
.dispose
, struct xfs_dquot
, q_lru
);
527 list_del_init(&dqp
->q_lru
);
528 xfs_qm_dqfree_one(dqp
);
536 struct shrinker
*shrink
,
537 struct shrink_control
*sc
)
539 struct xfs_quotainfo
*qi
= container_of(shrink
,
540 struct xfs_quotainfo
, qi_shrinker
);
542 return list_lru_shrink_count(&qi
->qi_lru
, sc
);
547 struct xfs_mount
*mp
,
549 struct xfs_quotainfo
*qinf
)
551 struct xfs_dquot
*dqp
;
552 struct xfs_def_quota
*defq
;
553 struct xfs_disk_dquot
*ddqp
;
556 error
= xfs_qm_dqget_uncached(mp
, 0, type
, &dqp
);
561 defq
= xfs_get_defquota(qinf
, xfs_dquot_type(dqp
));
564 * Timers and warnings have been already set, let's just set the
565 * default limits for this quota type
567 defq
->bhardlimit
= be64_to_cpu(ddqp
->d_blk_hardlimit
);
568 defq
->bsoftlimit
= be64_to_cpu(ddqp
->d_blk_softlimit
);
569 defq
->ihardlimit
= be64_to_cpu(ddqp
->d_ino_hardlimit
);
570 defq
->isoftlimit
= be64_to_cpu(ddqp
->d_ino_softlimit
);
571 defq
->rtbhardlimit
= be64_to_cpu(ddqp
->d_rtb_hardlimit
);
572 defq
->rtbsoftlimit
= be64_to_cpu(ddqp
->d_rtb_softlimit
);
573 xfs_qm_dqdestroy(dqp
);
576 /* Initialize quota time limits from the root dquot. */
578 xfs_qm_init_timelimits(
579 struct xfs_mount
*mp
,
582 struct xfs_quotainfo
*qinf
= mp
->m_quotainfo
;
583 struct xfs_def_quota
*defq
;
584 struct xfs_disk_dquot
*ddqp
;
585 struct xfs_dquot
*dqp
;
588 defq
= xfs_get_defquota(qinf
, type
);
590 defq
->btimelimit
= XFS_QM_BTIMELIMIT
;
591 defq
->itimelimit
= XFS_QM_ITIMELIMIT
;
592 defq
->rtbtimelimit
= XFS_QM_RTBTIMELIMIT
;
593 defq
->bwarnlimit
= XFS_QM_BWARNLIMIT
;
594 defq
->iwarnlimit
= XFS_QM_IWARNLIMIT
;
595 defq
->rtbwarnlimit
= XFS_QM_RTBWARNLIMIT
;
598 * We try to get the limits from the superuser's limits fields.
599 * This is quite hacky, but it is standard quota practice.
601 * Since we may not have done a quotacheck by this point, just read
602 * the dquot without attaching it to any hashtables or lists.
604 error
= xfs_qm_dqget_uncached(mp
, 0, type
, &dqp
);
611 * The warnings and timers set the grace period given to
612 * a user or group before he or she can not perform any
613 * more writing. If it is zero, a default is used.
616 defq
->btimelimit
= be32_to_cpu(ddqp
->d_btimer
);
618 defq
->itimelimit
= be32_to_cpu(ddqp
->d_itimer
);
619 if (ddqp
->d_rtbtimer
)
620 defq
->rtbtimelimit
= be32_to_cpu(ddqp
->d_rtbtimer
);
622 defq
->bwarnlimit
= be16_to_cpu(ddqp
->d_bwarns
);
624 defq
->iwarnlimit
= be16_to_cpu(ddqp
->d_iwarns
);
625 if (ddqp
->d_rtbwarns
)
626 defq
->rtbwarnlimit
= be16_to_cpu(ddqp
->d_rtbwarns
);
628 xfs_qm_dqdestroy(dqp
);
632 * This initializes all the quota information that's kept in the
636 xfs_qm_init_quotainfo(
637 struct xfs_mount
*mp
)
639 struct xfs_quotainfo
*qinf
;
642 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
644 qinf
= mp
->m_quotainfo
= kmem_zalloc(sizeof(struct xfs_quotainfo
), 0);
646 error
= list_lru_init(&qinf
->qi_lru
);
651 * See if quotainodes are setup, and if not, allocate them,
652 * and change the superblock accordingly.
654 error
= xfs_qm_init_quotainos(mp
);
658 INIT_RADIX_TREE(&qinf
->qi_uquota_tree
, GFP_NOFS
);
659 INIT_RADIX_TREE(&qinf
->qi_gquota_tree
, GFP_NOFS
);
660 INIT_RADIX_TREE(&qinf
->qi_pquota_tree
, GFP_NOFS
);
661 mutex_init(&qinf
->qi_tree_lock
);
663 /* mutex used to serialize quotaoffs */
664 mutex_init(&qinf
->qi_quotaofflock
);
666 /* Precalc some constants */
667 qinf
->qi_dqchunklen
= XFS_FSB_TO_BB(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
668 qinf
->qi_dqperchunk
= xfs_calc_dquots_per_chunk(qinf
->qi_dqchunklen
);
670 mp
->m_qflags
|= (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_CHKD
);
672 xfs_qm_init_timelimits(mp
, XFS_DQ_USER
);
673 xfs_qm_init_timelimits(mp
, XFS_DQ_GROUP
);
674 xfs_qm_init_timelimits(mp
, XFS_DQ_PROJ
);
676 if (XFS_IS_UQUOTA_RUNNING(mp
))
677 xfs_qm_set_defquota(mp
, XFS_DQ_USER
, qinf
);
678 if (XFS_IS_GQUOTA_RUNNING(mp
))
679 xfs_qm_set_defquota(mp
, XFS_DQ_GROUP
, qinf
);
680 if (XFS_IS_PQUOTA_RUNNING(mp
))
681 xfs_qm_set_defquota(mp
, XFS_DQ_PROJ
, qinf
);
683 qinf
->qi_shrinker
.count_objects
= xfs_qm_shrink_count
;
684 qinf
->qi_shrinker
.scan_objects
= xfs_qm_shrink_scan
;
685 qinf
->qi_shrinker
.seeks
= DEFAULT_SEEKS
;
686 qinf
->qi_shrinker
.flags
= SHRINKER_NUMA_AWARE
;
688 error
= register_shrinker(&qinf
->qi_shrinker
);
695 mutex_destroy(&qinf
->qi_quotaofflock
);
696 mutex_destroy(&qinf
->qi_tree_lock
);
697 xfs_qm_destroy_quotainos(qinf
);
699 list_lru_destroy(&qinf
->qi_lru
);
702 mp
->m_quotainfo
= NULL
;
707 * Gets called when unmounting a filesystem or when all quotas get
709 * This purges the quota inodes, destroys locks and frees itself.
712 xfs_qm_destroy_quotainfo(
713 struct xfs_mount
*mp
)
715 struct xfs_quotainfo
*qi
;
717 qi
= mp
->m_quotainfo
;
720 unregister_shrinker(&qi
->qi_shrinker
);
721 list_lru_destroy(&qi
->qi_lru
);
722 xfs_qm_destroy_quotainos(qi
);
723 mutex_destroy(&qi
->qi_tree_lock
);
724 mutex_destroy(&qi
->qi_quotaofflock
);
726 mp
->m_quotainfo
= NULL
;
730 * Create an inode and return with a reference already taken, but unlocked
731 * This is how we create quota inodes
741 bool need_alloc
= true;
745 * With superblock that doesn't have separate pquotino, we
746 * share an inode between gquota and pquota. If the on-disk
747 * superblock has GQUOTA and the filesystem is now mounted
748 * with PQUOTA, just use sb_gquotino for sb_pquotino and
751 if (!xfs_sb_version_has_pquotino(&mp
->m_sb
) &&
752 (flags
& (XFS_QMOPT_PQUOTA
|XFS_QMOPT_GQUOTA
))) {
753 xfs_ino_t ino
= NULLFSINO
;
755 if ((flags
& XFS_QMOPT_PQUOTA
) &&
756 (mp
->m_sb
.sb_gquotino
!= NULLFSINO
)) {
757 ino
= mp
->m_sb
.sb_gquotino
;
758 if (XFS_IS_CORRUPT(mp
,
759 mp
->m_sb
.sb_pquotino
!= NULLFSINO
))
760 return -EFSCORRUPTED
;
761 } else if ((flags
& XFS_QMOPT_GQUOTA
) &&
762 (mp
->m_sb
.sb_pquotino
!= NULLFSINO
)) {
763 ino
= mp
->m_sb
.sb_pquotino
;
764 if (XFS_IS_CORRUPT(mp
,
765 mp
->m_sb
.sb_gquotino
!= NULLFSINO
))
766 return -EFSCORRUPTED
;
768 if (ino
!= NULLFSINO
) {
769 error
= xfs_iget(mp
, NULL
, ino
, 0, 0, ip
);
772 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
773 mp
->m_sb
.sb_pquotino
= NULLFSINO
;
778 error
= xfs_trans_alloc(mp
, &M_RES(mp
)->tr_create
,
779 need_alloc
? XFS_QM_QINOCREATE_SPACE_RES(mp
) : 0,
785 error
= xfs_dir_ialloc(&tp
, NULL
, S_IFREG
, 1, 0, 0, ip
);
787 xfs_trans_cancel(tp
);
793 * Make the changes in the superblock, and log those too.
794 * sbfields arg may contain fields other than *QUOTINO;
795 * VERSIONNUM for example.
797 spin_lock(&mp
->m_sb_lock
);
798 if (flags
& XFS_QMOPT_SBVERSION
) {
799 ASSERT(!xfs_sb_version_hasquota(&mp
->m_sb
));
801 xfs_sb_version_addquota(&mp
->m_sb
);
802 mp
->m_sb
.sb_uquotino
= NULLFSINO
;
803 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
804 mp
->m_sb
.sb_pquotino
= NULLFSINO
;
806 /* qflags will get updated fully _after_ quotacheck */
807 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_ALL_QUOTA_ACCT
;
809 if (flags
& XFS_QMOPT_UQUOTA
)
810 mp
->m_sb
.sb_uquotino
= (*ip
)->i_ino
;
811 else if (flags
& XFS_QMOPT_GQUOTA
)
812 mp
->m_sb
.sb_gquotino
= (*ip
)->i_ino
;
814 mp
->m_sb
.sb_pquotino
= (*ip
)->i_ino
;
815 spin_unlock(&mp
->m_sb_lock
);
818 error
= xfs_trans_commit(tp
);
820 ASSERT(XFS_FORCED_SHUTDOWN(mp
));
821 xfs_alert(mp
, "%s failed (error %d)!", __func__
, error
);
824 xfs_finish_inode_setup(*ip
);
830 xfs_qm_reset_dqcounts(
836 struct xfs_dqblk
*dqb
;
840 trace_xfs_reset_dqcounts(bp
, _RET_IP_
);
843 * Reset all counters and timers. They'll be
844 * started afresh by xfs_qm_quotacheck.
847 j
= (int)XFS_FSB_TO_B(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
) /
849 ASSERT(mp
->m_quotainfo
->qi_dqperchunk
== j
);
852 for (j
= 0; j
< mp
->m_quotainfo
->qi_dqperchunk
; j
++) {
853 struct xfs_disk_dquot
*ddq
;
855 ddq
= (struct xfs_disk_dquot
*)&dqb
[j
];
858 * Do a sanity check, and if needed, repair the dqblk. Don't
859 * output any warnings because it's perfectly possible to
860 * find uninitialised dquot blks. See comment in
863 fa
= xfs_dqblk_verify(mp
, &dqb
[j
], id
+ j
, type
);
865 xfs_dqblk_repair(mp
, &dqb
[j
], id
+ j
, type
);
868 * Reset type in case we are reusing group quota file for
869 * project quotas or vice versa
877 * dquot id 0 stores the default grace period and the maximum
878 * warning limit that were set by the administrator, so we
879 * should not reset them.
881 if (ddq
->d_id
!= 0) {
890 if (xfs_sb_version_hascrc(&mp
->m_sb
)) {
891 xfs_update_cksum((char *)&dqb
[j
],
892 sizeof(struct xfs_dqblk
),
899 xfs_qm_reset_dqcounts_all(
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 dquot blocks in this quota inode, zeroing all
968 * counters for every chunk of dquots that we find.
971 xfs_qm_reset_dqcounts_buf(
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
), 0);
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_reset_dqcounts_all(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
,
1076 struct xfs_mount
*mp
= ip
->i_mount
;
1077 struct xfs_dquot
*dqp
;
1081 id
= xfs_qm_id_for_quotatype(ip
, type
);
1082 error
= xfs_qm_dqget(mp
, id
, type
, true, &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
);
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 struct xfs_mount
*mp
,
1132 struct xfs_trans
*tp
,
1136 struct xfs_inode
*ip
;
1138 xfs_filblks_t rtblks
= 0; /* total rt blks */
1141 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1144 * rootino must have its resources accounted for, not so with the quota
1147 if (xfs_is_quota_inode(&mp
->m_sb
, ino
))
1151 * We don't _need_ to take the ilock EXCL here because quotacheck runs
1152 * at mount time and therefore nobody will be racing chown/chproj.
1154 error
= xfs_iget(mp
, tp
, ino
, XFS_IGET_DONTCACHE
, 0, &ip
);
1155 if (error
== -EINVAL
|| error
== -ENOENT
)
1160 ASSERT(ip
->i_delayed_blks
== 0);
1162 if (XFS_IS_REALTIME_INODE(ip
)) {
1163 struct xfs_ifork
*ifp
= XFS_IFORK_PTR(ip
, XFS_DATA_FORK
);
1165 if (!(ifp
->if_flags
& XFS_IFEXTENTS
)) {
1166 error
= xfs_iread_extents(tp
, ip
, XFS_DATA_FORK
);
1171 xfs_bmap_count_leaves(ifp
, &rtblks
);
1174 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
- rtblks
;
1177 * Add the (disk blocks and inode) resources occupied by this
1178 * inode to its dquots. We do this adjustment in the incore dquot,
1179 * and also copy the changes to its buffer.
1180 * We don't care about putting these changes in a transaction
1181 * envelope because if we crash in the middle of a 'quotacheck'
1182 * we have to start from the beginning anyway.
1183 * Once we're done, we'll log all the dquot bufs.
1185 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1186 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1188 if (XFS_IS_UQUOTA_ON(mp
)) {
1189 error
= xfs_qm_quotacheck_dqadjust(ip
, XFS_DQ_USER
, nblks
,
1195 if (XFS_IS_GQUOTA_ON(mp
)) {
1196 error
= xfs_qm_quotacheck_dqadjust(ip
, XFS_DQ_GROUP
, nblks
,
1202 if (XFS_IS_PQUOTA_ON(mp
)) {
1203 error
= xfs_qm_quotacheck_dqadjust(ip
, XFS_DQ_PROJ
, nblks
,
1216 struct xfs_dquot
*dqp
,
1219 struct xfs_mount
*mp
= dqp
->q_mount
;
1220 struct list_head
*buffer_list
= data
;
1221 struct xfs_buf
*bp
= NULL
;
1225 if (dqp
->dq_flags
& XFS_DQ_FREEING
)
1227 if (!XFS_DQ_IS_DIRTY(dqp
))
1231 * The only way the dquot is already flush locked by the time quotacheck
1232 * gets here is if reclaim flushed it before the dqadjust walk dirtied
1233 * it for the final time. Quotacheck collects all dquot bufs in the
1234 * local delwri queue before dquots are dirtied, so reclaim can't have
1235 * possibly queued it for I/O. The only way out is to push the buffer to
1236 * cycle the flush lock.
1238 if (!xfs_dqflock_nowait(dqp
)) {
1239 /* buf is pinned in-core by delwri list */
1240 bp
= xfs_buf_incore(mp
->m_ddev_targp
, dqp
->q_blkno
,
1241 mp
->m_quotainfo
->qi_dqchunklen
, 0);
1248 xfs_buf_delwri_pushbuf(bp
, buffer_list
);
1255 error
= xfs_qm_dqflush(dqp
, &bp
);
1259 xfs_buf_delwri_queue(bp
, buffer_list
);
1267 * Walk thru all the filesystem inodes and construct a consistent view
1268 * of the disk quota world. If the quotacheck fails, disable quotas.
1276 LIST_HEAD (buffer_list
);
1277 struct xfs_inode
*uip
= mp
->m_quotainfo
->qi_uquotaip
;
1278 struct xfs_inode
*gip
= mp
->m_quotainfo
->qi_gquotaip
;
1279 struct xfs_inode
*pip
= mp
->m_quotainfo
->qi_pquotaip
;
1283 ASSERT(uip
|| gip
|| pip
);
1284 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1286 xfs_notice(mp
, "Quotacheck needed: Please wait.");
1289 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1290 * their counters to zero. We need a clean slate.
1291 * We don't log our changes till later.
1294 error
= xfs_qm_reset_dqcounts_buf(mp
, uip
, XFS_QMOPT_UQUOTA
,
1298 flags
|= XFS_UQUOTA_CHKD
;
1302 error
= xfs_qm_reset_dqcounts_buf(mp
, gip
, XFS_QMOPT_GQUOTA
,
1306 flags
|= XFS_GQUOTA_CHKD
;
1310 error
= xfs_qm_reset_dqcounts_buf(mp
, pip
, XFS_QMOPT_PQUOTA
,
1314 flags
|= XFS_PQUOTA_CHKD
;
1317 error
= xfs_iwalk_threaded(mp
, 0, 0, xfs_qm_dqusage_adjust
, 0, true,
1323 * We've made all the changes that we need to make incore. Flush them
1324 * down to disk buffers if everything was updated successfully.
1326 if (XFS_IS_UQUOTA_ON(mp
)) {
1327 error
= xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_flush_one
,
1330 if (XFS_IS_GQUOTA_ON(mp
)) {
1331 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_flush_one
,
1336 if (XFS_IS_PQUOTA_ON(mp
)) {
1337 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_flush_one
,
1343 error2
= xfs_buf_delwri_submit(&buffer_list
);
1348 * We can get this error if we couldn't do a dquot allocation inside
1349 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1350 * dirty dquots that might be cached, we just want to get rid of them
1351 * and turn quotaoff. The dquots won't be attached to any of the inodes
1352 * at this point (because we intentionally didn't in dqget_noattach).
1355 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
1360 * If one type of quotas is off, then it will lose its
1361 * quotachecked status, since we won't be doing accounting for
1362 * that type anymore.
1364 mp
->m_qflags
&= ~XFS_ALL_QUOTA_CHKD
;
1365 mp
->m_qflags
|= flags
;
1368 xfs_buf_delwri_cancel(&buffer_list
);
1372 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1375 * We must turn off quotas.
1377 ASSERT(mp
->m_quotainfo
!= NULL
);
1378 xfs_qm_destroy_quotainfo(mp
);
1379 if (xfs_mount_reset_sbqflags(mp
)) {
1381 "Quotacheck: Failed to reset quota flags.");
1384 xfs_notice(mp
, "Quotacheck: Done.");
1389 * This is called from xfs_mountfs to start quotas and initialize all
1390 * necessary data structures like quotainfo. This is also responsible for
1391 * running a quotacheck as necessary. We are guaranteed that the superblock
1392 * is consistently read in at this point.
1394 * If we fail here, the mount will continue with quota turned off. We don't
1395 * need to inidicate success or failure at all.
1398 xfs_qm_mount_quotas(
1399 struct xfs_mount
*mp
)
1405 * If quotas on realtime volumes is not supported, we disable
1406 * quotas immediately.
1408 if (mp
->m_sb
.sb_rextents
) {
1409 xfs_notice(mp
, "Cannot turn on quotas for realtime filesystem");
1414 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1417 * Allocate the quotainfo structure inside the mount struct, and
1418 * create quotainode(s), and change/rev superblock if necessary.
1420 error
= xfs_qm_init_quotainfo(mp
);
1423 * We must turn off quotas.
1425 ASSERT(mp
->m_quotainfo
== NULL
);
1430 * If any of the quotas are not consistent, do a quotacheck.
1432 if (XFS_QM_NEED_QUOTACHECK(mp
)) {
1433 error
= xfs_qm_quotacheck(mp
);
1435 /* Quotacheck failed and disabled quotas. */
1440 * If one type of quotas is off, then it will lose its
1441 * quotachecked status, since we won't be doing accounting for
1442 * that type anymore.
1444 if (!XFS_IS_UQUOTA_ON(mp
))
1445 mp
->m_qflags
&= ~XFS_UQUOTA_CHKD
;
1446 if (!XFS_IS_GQUOTA_ON(mp
))
1447 mp
->m_qflags
&= ~XFS_GQUOTA_CHKD
;
1448 if (!XFS_IS_PQUOTA_ON(mp
))
1449 mp
->m_qflags
&= ~XFS_PQUOTA_CHKD
;
1453 * We actually don't have to acquire the m_sb_lock at all.
1454 * This can only be called from mount, and that's single threaded. XXX
1456 spin_lock(&mp
->m_sb_lock
);
1457 sbf
= mp
->m_sb
.sb_qflags
;
1458 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
;
1459 spin_unlock(&mp
->m_sb_lock
);
1461 if (sbf
!= (mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
)) {
1462 if (xfs_sync_sb(mp
, false)) {
1464 * We could only have been turning quotas off.
1465 * We aren't in very good shape actually because
1466 * the incore structures are convinced that quotas are
1467 * off, but the on disk superblock doesn't know that !
1469 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp
)));
1470 xfs_alert(mp
, "%s: Superblock update failed!",
1476 xfs_warn(mp
, "Failed to initialize disk quotas.");
1482 * This is called after the superblock has been read in and we're ready to
1483 * iget the quota inodes.
1486 xfs_qm_init_quotainos(
1489 struct xfs_inode
*uip
= NULL
;
1490 struct xfs_inode
*gip
= NULL
;
1491 struct xfs_inode
*pip
= NULL
;
1495 ASSERT(mp
->m_quotainfo
);
1498 * Get the uquota and gquota inodes
1500 if (xfs_sb_version_hasquota(&mp
->m_sb
)) {
1501 if (XFS_IS_UQUOTA_ON(mp
) &&
1502 mp
->m_sb
.sb_uquotino
!= NULLFSINO
) {
1503 ASSERT(mp
->m_sb
.sb_uquotino
> 0);
1504 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_uquotino
,
1509 if (XFS_IS_GQUOTA_ON(mp
) &&
1510 mp
->m_sb
.sb_gquotino
!= NULLFSINO
) {
1511 ASSERT(mp
->m_sb
.sb_gquotino
> 0);
1512 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_gquotino
,
1517 if (XFS_IS_PQUOTA_ON(mp
) &&
1518 mp
->m_sb
.sb_pquotino
!= NULLFSINO
) {
1519 ASSERT(mp
->m_sb
.sb_pquotino
> 0);
1520 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_pquotino
,
1526 flags
|= XFS_QMOPT_SBVERSION
;
1530 * Create the three inodes, if they don't exist already. The changes
1531 * made above will get added to a transaction and logged in one of
1532 * the qino_alloc calls below. If the device is readonly,
1533 * temporarily switch to read-write to do this.
1535 if (XFS_IS_UQUOTA_ON(mp
) && uip
== NULL
) {
1536 error
= xfs_qm_qino_alloc(mp
, &uip
,
1537 flags
| XFS_QMOPT_UQUOTA
);
1541 flags
&= ~XFS_QMOPT_SBVERSION
;
1543 if (XFS_IS_GQUOTA_ON(mp
) && gip
== NULL
) {
1544 error
= xfs_qm_qino_alloc(mp
, &gip
,
1545 flags
| XFS_QMOPT_GQUOTA
);
1549 flags
&= ~XFS_QMOPT_SBVERSION
;
1551 if (XFS_IS_PQUOTA_ON(mp
) && pip
== NULL
) {
1552 error
= xfs_qm_qino_alloc(mp
, &pip
,
1553 flags
| XFS_QMOPT_PQUOTA
);
1558 mp
->m_quotainfo
->qi_uquotaip
= uip
;
1559 mp
->m_quotainfo
->qi_gquotaip
= gip
;
1560 mp
->m_quotainfo
->qi_pquotaip
= pip
;
1575 xfs_qm_destroy_quotainos(
1576 struct xfs_quotainfo
*qi
)
1578 if (qi
->qi_uquotaip
) {
1579 xfs_irele(qi
->qi_uquotaip
);
1580 qi
->qi_uquotaip
= NULL
; /* paranoia */
1582 if (qi
->qi_gquotaip
) {
1583 xfs_irele(qi
->qi_gquotaip
);
1584 qi
->qi_gquotaip
= NULL
;
1586 if (qi
->qi_pquotaip
) {
1587 xfs_irele(qi
->qi_pquotaip
);
1588 qi
->qi_pquotaip
= NULL
;
1594 struct xfs_dquot
*dqp
)
1596 struct xfs_mount
*mp
= dqp
->q_mount
;
1597 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
1599 mutex_lock(&qi
->qi_tree_lock
);
1600 radix_tree_delete(xfs_dquot_tree(qi
, dqp
->q_core
.d_flags
),
1601 be32_to_cpu(dqp
->q_core
.d_id
));
1604 mutex_unlock(&qi
->qi_tree_lock
);
1606 xfs_qm_dqdestroy(dqp
);
1609 /* --------------- utility functions for vnodeops ---------------- */
1613 * Given an inode, a uid, gid and prid make sure that we have
1614 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1615 * quotas by creating this file.
1616 * This also attaches dquot(s) to the given inode after locking it,
1617 * and returns the dquots corresponding to the uid and/or gid.
1619 * in : inode (unlocked)
1620 * out : udquot, gdquot with references taken and unlocked
1624 struct xfs_inode
*ip
,
1629 struct xfs_dquot
**O_udqpp
,
1630 struct xfs_dquot
**O_gdqpp
,
1631 struct xfs_dquot
**O_pdqpp
)
1633 struct xfs_mount
*mp
= ip
->i_mount
;
1634 struct inode
*inode
= VFS_I(ip
);
1635 struct user_namespace
*user_ns
= inode
->i_sb
->s_user_ns
;
1636 struct xfs_dquot
*uq
= NULL
;
1637 struct xfs_dquot
*gq
= NULL
;
1638 struct xfs_dquot
*pq
= NULL
;
1642 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1645 lockflags
= XFS_ILOCK_EXCL
;
1646 xfs_ilock(ip
, lockflags
);
1648 if ((flags
& XFS_QMOPT_INHERIT
) && XFS_INHERIT_GID(ip
))
1652 * Attach the dquot(s) to this inode, doing a dquot allocation
1653 * if necessary. The dquot(s) will not be locked.
1655 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
1656 error
= xfs_qm_dqattach_locked(ip
, true);
1658 xfs_iunlock(ip
, lockflags
);
1663 if ((flags
& XFS_QMOPT_UQUOTA
) && XFS_IS_UQUOTA_ON(mp
)) {
1664 if (!uid_eq(inode
->i_uid
, uid
)) {
1666 * What we need is the dquot that has this uid, and
1667 * if we send the inode to dqget, the uid of the inode
1668 * takes priority over what's sent in the uid argument.
1669 * We must unlock inode here before calling dqget if
1670 * we're not sending the inode, because otherwise
1671 * we'll deadlock by doing trans_reserve while
1674 xfs_iunlock(ip
, lockflags
);
1675 error
= xfs_qm_dqget(mp
, from_kuid(user_ns
, uid
),
1676 XFS_DQ_USER
, true, &uq
);
1678 ASSERT(error
!= -ENOENT
);
1682 * Get the ilock in the right order.
1685 lockflags
= XFS_ILOCK_SHARED
;
1686 xfs_ilock(ip
, lockflags
);
1689 * Take an extra reference, because we'll return
1692 ASSERT(ip
->i_udquot
);
1693 uq
= xfs_qm_dqhold(ip
->i_udquot
);
1696 if ((flags
& XFS_QMOPT_GQUOTA
) && XFS_IS_GQUOTA_ON(mp
)) {
1697 if (!gid_eq(inode
->i_gid
, gid
)) {
1698 xfs_iunlock(ip
, lockflags
);
1699 error
= xfs_qm_dqget(mp
, from_kgid(user_ns
, gid
),
1700 XFS_DQ_GROUP
, true, &gq
);
1702 ASSERT(error
!= -ENOENT
);
1706 lockflags
= XFS_ILOCK_SHARED
;
1707 xfs_ilock(ip
, lockflags
);
1709 ASSERT(ip
->i_gdquot
);
1710 gq
= xfs_qm_dqhold(ip
->i_gdquot
);
1713 if ((flags
& XFS_QMOPT_PQUOTA
) && XFS_IS_PQUOTA_ON(mp
)) {
1714 if (ip
->i_d
.di_projid
!= prid
) {
1715 xfs_iunlock(ip
, lockflags
);
1716 error
= xfs_qm_dqget(mp
, (xfs_dqid_t
)prid
, XFS_DQ_PROJ
,
1719 ASSERT(error
!= -ENOENT
);
1723 lockflags
= XFS_ILOCK_SHARED
;
1724 xfs_ilock(ip
, lockflags
);
1726 ASSERT(ip
->i_pdquot
);
1727 pq
= xfs_qm_dqhold(ip
->i_pdquot
);
1730 trace_xfs_dquot_dqalloc(ip
);
1732 xfs_iunlock(ip
, lockflags
);
1754 * Actually transfer ownership, and do dquot modifications.
1755 * These were already reserved.
1759 struct xfs_trans
*tp
,
1760 struct xfs_inode
*ip
,
1761 struct xfs_dquot
**IO_olddq
,
1762 struct xfs_dquot
*newdq
)
1764 struct xfs_dquot
*prevdq
;
1765 uint bfield
= XFS_IS_REALTIME_INODE(ip
) ?
1766 XFS_TRANS_DQ_RTBCOUNT
: XFS_TRANS_DQ_BCOUNT
;
1769 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1770 ASSERT(XFS_IS_QUOTA_RUNNING(ip
->i_mount
));
1775 ASSERT(prevdq
!= newdq
);
1777 xfs_trans_mod_dquot(tp
, prevdq
, bfield
, -(ip
->i_d
.di_nblocks
));
1778 xfs_trans_mod_dquot(tp
, prevdq
, XFS_TRANS_DQ_ICOUNT
, -1);
1780 /* the sparkling new dquot */
1781 xfs_trans_mod_dquot(tp
, newdq
, bfield
, ip
->i_d
.di_nblocks
);
1782 xfs_trans_mod_dquot(tp
, newdq
, XFS_TRANS_DQ_ICOUNT
, 1);
1785 * Take an extra reference, because the inode is going to keep
1786 * this dquot pointer even after the trans_commit.
1788 *IO_olddq
= xfs_qm_dqhold(newdq
);
1794 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1797 xfs_qm_vop_chown_reserve(
1798 struct xfs_trans
*tp
,
1799 struct xfs_inode
*ip
,
1800 struct xfs_dquot
*udqp
,
1801 struct xfs_dquot
*gdqp
,
1802 struct xfs_dquot
*pdqp
,
1805 struct xfs_mount
*mp
= ip
->i_mount
;
1807 unsigned int blkflags
;
1808 struct xfs_dquot
*udq_unres
= NULL
;
1809 struct xfs_dquot
*gdq_unres
= NULL
;
1810 struct xfs_dquot
*pdq_unres
= NULL
;
1811 struct xfs_dquot
*udq_delblks
= NULL
;
1812 struct xfs_dquot
*gdq_delblks
= NULL
;
1813 struct xfs_dquot
*pdq_delblks
= NULL
;
1817 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
|XFS_ILOCK_SHARED
));
1818 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1820 delblks
= ip
->i_delayed_blks
;
1821 blkflags
= XFS_IS_REALTIME_INODE(ip
) ?
1822 XFS_QMOPT_RES_RTBLKS
: XFS_QMOPT_RES_REGBLKS
;
1824 if (XFS_IS_UQUOTA_ON(mp
) && udqp
&&
1825 i_uid_read(VFS_I(ip
)) != be32_to_cpu(udqp
->q_core
.d_id
)) {
1828 * If there are delayed allocation blocks, then we have to
1829 * unreserve those from the old dquot, and add them to the
1833 ASSERT(ip
->i_udquot
);
1834 udq_unres
= ip
->i_udquot
;
1837 if (XFS_IS_GQUOTA_ON(ip
->i_mount
) && gdqp
&&
1838 i_gid_read(VFS_I(ip
)) != be32_to_cpu(gdqp
->q_core
.d_id
)) {
1841 ASSERT(ip
->i_gdquot
);
1842 gdq_unres
= ip
->i_gdquot
;
1846 if (XFS_IS_PQUOTA_ON(ip
->i_mount
) && pdqp
&&
1847 ip
->i_d
.di_projid
!= be32_to_cpu(pdqp
->q_core
.d_id
)) {
1850 ASSERT(ip
->i_pdquot
);
1851 pdq_unres
= ip
->i_pdquot
;
1855 error
= xfs_trans_reserve_quota_bydquots(tp
, ip
->i_mount
,
1856 udq_delblks
, gdq_delblks
, pdq_delblks
,
1857 ip
->i_d
.di_nblocks
, 1, flags
| blkflags
);
1862 * Do the delayed blks reservations/unreservations now. Since, these
1863 * are done without the help of a transaction, if a reservation fails
1864 * its previous reservations won't be automatically undone by trans
1865 * code. So, we have to do it manually here.
1869 * Do the reservations first. Unreservation can't fail.
1871 ASSERT(udq_delblks
|| gdq_delblks
|| pdq_delblks
);
1872 ASSERT(udq_unres
|| gdq_unres
|| pdq_unres
);
1873 error
= xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
1874 udq_delblks
, gdq_delblks
, pdq_delblks
,
1875 (xfs_qcnt_t
)delblks
, 0, flags
| blkflags
);
1878 xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
1879 udq_unres
, gdq_unres
, pdq_unres
,
1880 -((xfs_qcnt_t
)delblks
), 0, blkflags
);
1887 xfs_qm_vop_rename_dqattach(
1888 struct xfs_inode
**i_tab
)
1890 struct xfs_mount
*mp
= i_tab
[0]->i_mount
;
1893 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1896 for (i
= 0; (i
< 4 && i_tab
[i
]); i
++) {
1897 struct xfs_inode
*ip
= i_tab
[i
];
1901 * Watch out for duplicate entries in the table.
1903 if (i
== 0 || ip
!= i_tab
[i
-1]) {
1904 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
1905 error
= xfs_qm_dqattach(ip
);
1915 xfs_qm_vop_create_dqattach(
1916 struct xfs_trans
*tp
,
1917 struct xfs_inode
*ip
,
1918 struct xfs_dquot
*udqp
,
1919 struct xfs_dquot
*gdqp
,
1920 struct xfs_dquot
*pdqp
)
1922 struct xfs_mount
*mp
= tp
->t_mountp
;
1924 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1927 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1929 if (udqp
&& XFS_IS_UQUOTA_ON(mp
)) {
1930 ASSERT(ip
->i_udquot
== NULL
);
1931 ASSERT(i_uid_read(VFS_I(ip
)) == be32_to_cpu(udqp
->q_core
.d_id
));
1933 ip
->i_udquot
= xfs_qm_dqhold(udqp
);
1934 xfs_trans_mod_dquot(tp
, udqp
, XFS_TRANS_DQ_ICOUNT
, 1);
1936 if (gdqp
&& XFS_IS_GQUOTA_ON(mp
)) {
1937 ASSERT(ip
->i_gdquot
== NULL
);
1938 ASSERT(i_gid_read(VFS_I(ip
)) == be32_to_cpu(gdqp
->q_core
.d_id
));
1940 ip
->i_gdquot
= xfs_qm_dqhold(gdqp
);
1941 xfs_trans_mod_dquot(tp
, gdqp
, XFS_TRANS_DQ_ICOUNT
, 1);
1943 if (pdqp
&& XFS_IS_PQUOTA_ON(mp
)) {
1944 ASSERT(ip
->i_pdquot
== NULL
);
1945 ASSERT(ip
->i_d
.di_projid
== be32_to_cpu(pdqp
->q_core
.d_id
));
1947 ip
->i_pdquot
= xfs_qm_dqhold(pdqp
);
1948 xfs_trans_mod_dquot(tp
, pdqp
, XFS_TRANS_DQ_ICOUNT
, 1);