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_trans.h"
35 #include "xfs_trans_space.h"
37 #include "xfs_trace.h"
38 #include "xfs_icache.h"
39 #include "xfs_cksum.h"
42 * The global quota manager. There is only one of these for the entire
43 * system, _not_ one per file system. XQM keeps track of the overall
44 * quota functionality, including maintaining the freelist and hash
47 STATIC
int xfs_qm_init_quotainos(xfs_mount_t
*);
48 STATIC
int xfs_qm_init_quotainfo(xfs_mount_t
*);
51 STATIC
void xfs_qm_dqfree_one(struct xfs_dquot
*dqp
);
53 * We use the batch lookup interface to iterate over the dquots as it
54 * currently is the only interface into the radix tree code that allows
55 * fuzzy lookups instead of exact matches. Holding the lock over multiple
56 * operations is fine as all callers are used either during mount/umount
59 #define XFS_DQ_LOOKUP_BATCH 32
65 int (*execute
)(struct xfs_dquot
*dqp
, void *data
),
68 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
69 struct radix_tree_root
*tree
= xfs_dquot_tree(qi
, type
);
81 struct xfs_dquot
*batch
[XFS_DQ_LOOKUP_BATCH
];
85 mutex_lock(&qi
->qi_tree_lock
);
86 nr_found
= radix_tree_gang_lookup(tree
, (void **)batch
,
87 next_index
, XFS_DQ_LOOKUP_BATCH
);
89 mutex_unlock(&qi
->qi_tree_lock
);
93 for (i
= 0; i
< nr_found
; i
++) {
94 struct xfs_dquot
*dqp
= batch
[i
];
96 next_index
= be32_to_cpu(dqp
->q_core
.d_id
) + 1;
98 error
= execute(batch
[i
], data
);
99 if (error
== -EAGAIN
) {
103 if (error
&& last_error
!= -EFSCORRUPTED
)
107 mutex_unlock(&qi
->qi_tree_lock
);
109 /* bail out if the filesystem is corrupted. */
110 if (last_error
== -EFSCORRUPTED
) {
114 /* we're done if id overflows back to zero */
129 * Purge a dquot from all tracking data structures and free it.
133 struct xfs_dquot
*dqp
,
136 struct xfs_mount
*mp
= dqp
->q_mount
;
137 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
140 if ((dqp
->dq_flags
& XFS_DQ_FREEING
) || dqp
->q_nrefs
!= 0) {
145 dqp
->dq_flags
|= XFS_DQ_FREEING
;
150 * If we are turning this type of quotas off, we don't care
151 * about the dirty metadata sitting in this dquot. OTOH, if
152 * we're unmounting, we do care, so we flush it and wait.
154 if (XFS_DQ_IS_DIRTY(dqp
)) {
155 struct xfs_buf
*bp
= NULL
;
159 * We don't care about getting disk errors here. We need
160 * to purge this dquot anyway, so we go ahead regardless.
162 error
= xfs_qm_dqflush(dqp
, &bp
);
164 xfs_warn(mp
, "%s: dquot %p flush failed",
167 error
= xfs_bwrite(bp
);
173 ASSERT(atomic_read(&dqp
->q_pincount
) == 0);
174 ASSERT(XFS_FORCED_SHUTDOWN(mp
) ||
175 !(dqp
->q_logitem
.qli_item
.li_flags
& XFS_LI_IN_AIL
));
180 radix_tree_delete(xfs_dquot_tree(qi
, dqp
->q_core
.d_flags
),
181 be32_to_cpu(dqp
->q_core
.d_id
));
185 * We move dquots to the freelist as soon as their reference count
186 * hits zero, so it really should be on the freelist here.
188 ASSERT(!list_empty(&dqp
->q_lru
));
189 list_lru_del(&qi
->qi_lru
, &dqp
->q_lru
);
190 XFS_STATS_DEC(mp
, xs_qm_dquot_unused
);
192 xfs_qm_dqdestroy(dqp
);
197 * Purge the dquot cache.
201 struct xfs_mount
*mp
,
204 if (flags
& XFS_QMOPT_UQUOTA
)
205 xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_dqpurge
, NULL
);
206 if (flags
& XFS_QMOPT_GQUOTA
)
207 xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_dqpurge
, NULL
);
208 if (flags
& XFS_QMOPT_PQUOTA
)
209 xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_dqpurge
, NULL
);
213 * Just destroy the quotainfo structure.
217 struct xfs_mount
*mp
)
219 if (mp
->m_quotainfo
) {
220 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
221 xfs_qm_destroy_quotainfo(mp
);
226 * Called from the vfsops layer.
229 xfs_qm_unmount_quotas(
233 * Release the dquots that root inode, et al might be holding,
234 * before we flush quotas and blow away the quotainfo structure.
236 ASSERT(mp
->m_rootip
);
237 xfs_qm_dqdetach(mp
->m_rootip
);
239 xfs_qm_dqdetach(mp
->m_rbmip
);
241 xfs_qm_dqdetach(mp
->m_rsumip
);
244 * Release the quota inodes.
246 if (mp
->m_quotainfo
) {
247 if (mp
->m_quotainfo
->qi_uquotaip
) {
248 IRELE(mp
->m_quotainfo
->qi_uquotaip
);
249 mp
->m_quotainfo
->qi_uquotaip
= NULL
;
251 if (mp
->m_quotainfo
->qi_gquotaip
) {
252 IRELE(mp
->m_quotainfo
->qi_gquotaip
);
253 mp
->m_quotainfo
->qi_gquotaip
= NULL
;
255 if (mp
->m_quotainfo
->qi_pquotaip
) {
256 IRELE(mp
->m_quotainfo
->qi_pquotaip
);
257 mp
->m_quotainfo
->qi_pquotaip
= NULL
;
268 xfs_dquot_t
**IO_idqpp
)
273 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
277 * See if we already have it in the inode itself. IO_idqpp is &i_udquot
278 * or &i_gdquot. This made the code look weird, but made the logic a lot
283 trace_xfs_dqattach_found(dqp
);
288 * Find the dquot from somewhere. This bumps the reference count of
289 * dquot and returns it locked. This can return ENOENT if dquot didn't
290 * exist on disk and we didn't ask it to allocate; ESRCH if quotas got
291 * turned off suddenly.
293 error
= xfs_qm_dqget(ip
->i_mount
, ip
, id
, type
,
294 doalloc
| XFS_QMOPT_DOWARN
, &dqp
);
298 trace_xfs_dqattach_get(dqp
);
301 * dqget may have dropped and re-acquired the ilock, but it guarantees
302 * that the dquot returned is the one that should go in the inode.
310 xfs_qm_need_dqattach(
311 struct xfs_inode
*ip
)
313 struct xfs_mount
*mp
= ip
->i_mount
;
315 if (!XFS_IS_QUOTA_RUNNING(mp
))
317 if (!XFS_IS_QUOTA_ON(mp
))
319 if (!XFS_NOT_DQATTACHED(mp
, ip
))
321 if (xfs_is_quota_inode(&mp
->m_sb
, ip
->i_ino
))
327 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
329 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
330 * Inode may get unlocked and relocked in here, and the caller must deal with
334 xfs_qm_dqattach_locked(
338 xfs_mount_t
*mp
= ip
->i_mount
;
341 if (!xfs_qm_need_dqattach(ip
))
344 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
346 if (XFS_IS_UQUOTA_ON(mp
) && !ip
->i_udquot
) {
347 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
348 flags
& XFS_QMOPT_DQALLOC
,
352 ASSERT(ip
->i_udquot
);
355 if (XFS_IS_GQUOTA_ON(mp
) && !ip
->i_gdquot
) {
356 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
357 flags
& XFS_QMOPT_DQALLOC
,
361 ASSERT(ip
->i_gdquot
);
364 if (XFS_IS_PQUOTA_ON(mp
) && !ip
->i_pdquot
) {
365 error
= xfs_qm_dqattach_one(ip
, xfs_get_projid(ip
), XFS_DQ_PROJ
,
366 flags
& XFS_QMOPT_DQALLOC
,
370 ASSERT(ip
->i_pdquot
);
375 * Don't worry about the dquots that we may have attached before any
376 * error - they'll get detached later if it has not already been done.
378 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
384 struct xfs_inode
*ip
,
389 if (!xfs_qm_need_dqattach(ip
))
392 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
393 error
= xfs_qm_dqattach_locked(ip
, flags
);
394 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
400 * Release dquots (and their references) if any.
401 * The inode should be locked EXCL except when this's called by
408 if (!(ip
->i_udquot
|| ip
->i_gdquot
|| ip
->i_pdquot
))
411 trace_xfs_dquot_dqdetach(ip
);
413 ASSERT(!xfs_is_quota_inode(&ip
->i_mount
->m_sb
, ip
->i_ino
));
415 xfs_qm_dqrele(ip
->i_udquot
);
419 xfs_qm_dqrele(ip
->i_gdquot
);
423 xfs_qm_dqrele(ip
->i_pdquot
);
428 struct xfs_qm_isolate
{
429 struct list_head buffers
;
430 struct list_head dispose
;
433 static enum lru_status
434 xfs_qm_dquot_isolate(
435 struct list_head
*item
,
436 struct list_lru_one
*lru
,
437 spinlock_t
*lru_lock
,
439 __releases(lru_lock
) __acquires(lru_lock
)
441 struct xfs_dquot
*dqp
= container_of(item
,
442 struct xfs_dquot
, q_lru
);
443 struct xfs_qm_isolate
*isol
= arg
;
445 if (!xfs_dqlock_nowait(dqp
))
449 * This dquot has acquired a reference in the meantime remove it from
450 * the freelist and try again.
454 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqwants
);
456 trace_xfs_dqreclaim_want(dqp
);
457 list_lru_isolate(lru
, &dqp
->q_lru
);
458 XFS_STATS_DEC(dqp
->q_mount
, xs_qm_dquot_unused
);
463 * If the dquot is dirty, flush it. If it's already being flushed, just
464 * skip it so there is time for the IO to complete before we try to
465 * reclaim it again on the next LRU pass.
467 if (!xfs_dqflock_nowait(dqp
)) {
472 if (XFS_DQ_IS_DIRTY(dqp
)) {
473 struct xfs_buf
*bp
= NULL
;
476 trace_xfs_dqreclaim_dirty(dqp
);
478 /* we have to drop the LRU lock to flush the dquot */
479 spin_unlock(lru_lock
);
481 error
= xfs_qm_dqflush(dqp
, &bp
);
483 xfs_warn(dqp
->q_mount
, "%s: dquot %p flush failed",
485 goto out_unlock_dirty
;
488 xfs_buf_delwri_queue(bp
, &isol
->buffers
);
490 goto out_unlock_dirty
;
495 * Prevent lookups now that we are past the point of no return.
497 dqp
->dq_flags
|= XFS_DQ_FREEING
;
500 ASSERT(dqp
->q_nrefs
== 0);
501 list_lru_isolate_move(lru
, &dqp
->q_lru
, &isol
->dispose
);
502 XFS_STATS_DEC(dqp
->q_mount
, xs_qm_dquot_unused
);
503 trace_xfs_dqreclaim_done(dqp
);
504 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqreclaims
);
508 trace_xfs_dqreclaim_busy(dqp
);
509 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqreclaim_misses
);
513 trace_xfs_dqreclaim_busy(dqp
);
514 XFS_STATS_INC(dqp
->q_mount
, xs_qm_dqreclaim_misses
);
522 struct shrinker
*shrink
,
523 struct shrink_control
*sc
)
525 struct xfs_quotainfo
*qi
= container_of(shrink
,
526 struct xfs_quotainfo
, qi_shrinker
);
527 struct xfs_qm_isolate isol
;
531 if ((sc
->gfp_mask
& (__GFP_FS
|__GFP_DIRECT_RECLAIM
)) != (__GFP_FS
|__GFP_DIRECT_RECLAIM
))
534 INIT_LIST_HEAD(&isol
.buffers
);
535 INIT_LIST_HEAD(&isol
.dispose
);
537 freed
= list_lru_shrink_walk(&qi
->qi_lru
, sc
,
538 xfs_qm_dquot_isolate
, &isol
);
540 error
= xfs_buf_delwri_submit(&isol
.buffers
);
542 xfs_warn(NULL
, "%s: dquot reclaim failed", __func__
);
544 while (!list_empty(&isol
.dispose
)) {
545 struct xfs_dquot
*dqp
;
547 dqp
= list_first_entry(&isol
.dispose
, struct xfs_dquot
, q_lru
);
548 list_del_init(&dqp
->q_lru
);
549 xfs_qm_dqfree_one(dqp
);
557 struct shrinker
*shrink
,
558 struct shrink_control
*sc
)
560 struct xfs_quotainfo
*qi
= container_of(shrink
,
561 struct xfs_quotainfo
, qi_shrinker
);
563 return list_lru_shrink_count(&qi
->qi_lru
, sc
);
570 xfs_quotainfo_t
*qinf
)
573 struct xfs_def_quota
*defq
;
576 error
= xfs_qm_dqread(mp
, 0, type
, XFS_QMOPT_DOWARN
, &dqp
);
579 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
581 defq
= xfs_get_defquota(dqp
, qinf
);
584 * Timers and warnings have been already set, let's just set the
585 * default limits for this quota type
587 defq
->bhardlimit
= be64_to_cpu(ddqp
->d_blk_hardlimit
);
588 defq
->bsoftlimit
= be64_to_cpu(ddqp
->d_blk_softlimit
);
589 defq
->ihardlimit
= be64_to_cpu(ddqp
->d_ino_hardlimit
);
590 defq
->isoftlimit
= be64_to_cpu(ddqp
->d_ino_softlimit
);
591 defq
->rtbhardlimit
= be64_to_cpu(ddqp
->d_rtb_hardlimit
);
592 defq
->rtbsoftlimit
= be64_to_cpu(ddqp
->d_rtb_softlimit
);
593 xfs_qm_dqdestroy(dqp
);
598 * This initializes all the quota information that's kept in the
602 xfs_qm_init_quotainfo(
605 xfs_quotainfo_t
*qinf
;
609 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
611 qinf
= mp
->m_quotainfo
= kmem_zalloc(sizeof(xfs_quotainfo_t
), KM_SLEEP
);
613 error
= list_lru_init(&qinf
->qi_lru
);
618 * See if quotainodes are setup, and if not, allocate them,
619 * and change the superblock accordingly.
621 error
= xfs_qm_init_quotainos(mp
);
625 INIT_RADIX_TREE(&qinf
->qi_uquota_tree
, GFP_NOFS
);
626 INIT_RADIX_TREE(&qinf
->qi_gquota_tree
, GFP_NOFS
);
627 INIT_RADIX_TREE(&qinf
->qi_pquota_tree
, GFP_NOFS
);
628 mutex_init(&qinf
->qi_tree_lock
);
630 /* mutex used to serialize quotaoffs */
631 mutex_init(&qinf
->qi_quotaofflock
);
633 /* Precalc some constants */
634 qinf
->qi_dqchunklen
= XFS_FSB_TO_BB(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
635 qinf
->qi_dqperchunk
= xfs_calc_dquots_per_chunk(qinf
->qi_dqchunklen
);
637 mp
->m_qflags
|= (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_CHKD
);
640 * We try to get the limits from the superuser's limits fields.
641 * This is quite hacky, but it is standard quota practice.
643 * Since we may not have done a quotacheck by this point, just read
644 * the dquot without attaching it to any hashtables or lists.
646 * Timers and warnings are globally set by the first timer found in
647 * user/group/proj quota types, otherwise a default value is used.
648 * This should be split into different fields per quota type.
650 error
= xfs_qm_dqread(mp
, 0,
651 XFS_IS_UQUOTA_RUNNING(mp
) ? XFS_DQ_USER
:
652 (XFS_IS_GQUOTA_RUNNING(mp
) ? XFS_DQ_GROUP
:
654 XFS_QMOPT_DOWARN
, &dqp
);
657 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
660 * The warnings and timers set the grace period given to
661 * a user or group before he or she can not perform any
662 * more writing. If it is zero, a default is used.
664 qinf
->qi_btimelimit
= ddqp
->d_btimer
?
665 be32_to_cpu(ddqp
->d_btimer
) : XFS_QM_BTIMELIMIT
;
666 qinf
->qi_itimelimit
= ddqp
->d_itimer
?
667 be32_to_cpu(ddqp
->d_itimer
) : XFS_QM_ITIMELIMIT
;
668 qinf
->qi_rtbtimelimit
= ddqp
->d_rtbtimer
?
669 be32_to_cpu(ddqp
->d_rtbtimer
) : XFS_QM_RTBTIMELIMIT
;
670 qinf
->qi_bwarnlimit
= ddqp
->d_bwarns
?
671 be16_to_cpu(ddqp
->d_bwarns
) : XFS_QM_BWARNLIMIT
;
672 qinf
->qi_iwarnlimit
= ddqp
->d_iwarns
?
673 be16_to_cpu(ddqp
->d_iwarns
) : XFS_QM_IWARNLIMIT
;
674 qinf
->qi_rtbwarnlimit
= ddqp
->d_rtbwarns
?
675 be16_to_cpu(ddqp
->d_rtbwarns
) : XFS_QM_RTBWARNLIMIT
;
676 xfs_qm_dqdestroy(dqp
);
678 qinf
->qi_btimelimit
= XFS_QM_BTIMELIMIT
;
679 qinf
->qi_itimelimit
= XFS_QM_ITIMELIMIT
;
680 qinf
->qi_rtbtimelimit
= XFS_QM_RTBTIMELIMIT
;
681 qinf
->qi_bwarnlimit
= XFS_QM_BWARNLIMIT
;
682 qinf
->qi_iwarnlimit
= XFS_QM_IWARNLIMIT
;
683 qinf
->qi_rtbwarnlimit
= XFS_QM_RTBWARNLIMIT
;
686 if (XFS_IS_UQUOTA_RUNNING(mp
))
687 xfs_qm_set_defquota(mp
, XFS_DQ_USER
, qinf
);
688 if (XFS_IS_GQUOTA_RUNNING(mp
))
689 xfs_qm_set_defquota(mp
, XFS_DQ_GROUP
, qinf
);
690 if (XFS_IS_PQUOTA_RUNNING(mp
))
691 xfs_qm_set_defquota(mp
, XFS_DQ_PROJ
, qinf
);
693 qinf
->qi_shrinker
.count_objects
= xfs_qm_shrink_count
;
694 qinf
->qi_shrinker
.scan_objects
= xfs_qm_shrink_scan
;
695 qinf
->qi_shrinker
.seeks
= DEFAULT_SEEKS
;
696 qinf
->qi_shrinker
.flags
= SHRINKER_NUMA_AWARE
;
697 register_shrinker(&qinf
->qi_shrinker
);
701 list_lru_destroy(&qinf
->qi_lru
);
704 mp
->m_quotainfo
= NULL
;
710 * Gets called when unmounting a filesystem or when all quotas get
712 * This purges the quota inodes, destroys locks and frees itself.
715 xfs_qm_destroy_quotainfo(
720 qi
= mp
->m_quotainfo
;
723 unregister_shrinker(&qi
->qi_shrinker
);
724 list_lru_destroy(&qi
->qi_lru
);
726 if (qi
->qi_uquotaip
) {
727 IRELE(qi
->qi_uquotaip
);
728 qi
->qi_uquotaip
= NULL
; /* paranoia */
730 if (qi
->qi_gquotaip
) {
731 IRELE(qi
->qi_gquotaip
);
732 qi
->qi_gquotaip
= NULL
;
734 if (qi
->qi_pquotaip
) {
735 IRELE(qi
->qi_pquotaip
);
736 qi
->qi_pquotaip
= NULL
;
738 mutex_destroy(&qi
->qi_quotaofflock
);
740 mp
->m_quotainfo
= NULL
;
744 * Create an inode and return with a reference already taken, but unlocked
745 * This is how we create quota inodes
756 bool need_alloc
= true;
760 * With superblock that doesn't have separate pquotino, we
761 * share an inode between gquota and pquota. If the on-disk
762 * superblock has GQUOTA and the filesystem is now mounted
763 * with PQUOTA, just use sb_gquotino for sb_pquotino and
766 if (!xfs_sb_version_has_pquotino(&mp
->m_sb
) &&
767 (flags
& (XFS_QMOPT_PQUOTA
|XFS_QMOPT_GQUOTA
))) {
768 xfs_ino_t ino
= NULLFSINO
;
770 if ((flags
& XFS_QMOPT_PQUOTA
) &&
771 (mp
->m_sb
.sb_gquotino
!= NULLFSINO
)) {
772 ino
= mp
->m_sb
.sb_gquotino
;
773 ASSERT(mp
->m_sb
.sb_pquotino
== NULLFSINO
);
774 } else if ((flags
& XFS_QMOPT_GQUOTA
) &&
775 (mp
->m_sb
.sb_pquotino
!= NULLFSINO
)) {
776 ino
= mp
->m_sb
.sb_pquotino
;
777 ASSERT(mp
->m_sb
.sb_gquotino
== NULLFSINO
);
779 if (ino
!= NULLFSINO
) {
780 error
= xfs_iget(mp
, NULL
, ino
, 0, 0, ip
);
783 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
784 mp
->m_sb
.sb_pquotino
= NULLFSINO
;
789 error
= xfs_trans_alloc(mp
, &M_RES(mp
)->tr_create
,
790 XFS_QM_QINOCREATE_SPACE_RES(mp
), 0, 0, &tp
);
795 error
= xfs_dir_ialloc(&tp
, NULL
, S_IFREG
, 1, 0, 0, 1, ip
,
798 xfs_trans_cancel(tp
);
804 * Make the changes in the superblock, and log those too.
805 * sbfields arg may contain fields other than *QUOTINO;
806 * VERSIONNUM for example.
808 spin_lock(&mp
->m_sb_lock
);
809 if (flags
& XFS_QMOPT_SBVERSION
) {
810 ASSERT(!xfs_sb_version_hasquota(&mp
->m_sb
));
812 xfs_sb_version_addquota(&mp
->m_sb
);
813 mp
->m_sb
.sb_uquotino
= NULLFSINO
;
814 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
815 mp
->m_sb
.sb_pquotino
= NULLFSINO
;
817 /* qflags will get updated fully _after_ quotacheck */
818 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_ALL_QUOTA_ACCT
;
820 if (flags
& XFS_QMOPT_UQUOTA
)
821 mp
->m_sb
.sb_uquotino
= (*ip
)->i_ino
;
822 else if (flags
& XFS_QMOPT_GQUOTA
)
823 mp
->m_sb
.sb_gquotino
= (*ip
)->i_ino
;
825 mp
->m_sb
.sb_pquotino
= (*ip
)->i_ino
;
826 spin_unlock(&mp
->m_sb_lock
);
829 error
= xfs_trans_commit(tp
);
831 ASSERT(XFS_FORCED_SHUTDOWN(mp
));
832 xfs_alert(mp
, "%s failed (error %d)!", __func__
, error
);
835 xfs_finish_inode_setup(*ip
);
841 xfs_qm_reset_dqcounts(
847 struct xfs_dqblk
*dqb
;
850 trace_xfs_reset_dqcounts(bp
, _RET_IP_
);
853 * Reset all counters and timers. They'll be
854 * started afresh by xfs_qm_quotacheck.
857 j
= (int)XFS_FSB_TO_B(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
) /
859 ASSERT(mp
->m_quotainfo
->qi_dqperchunk
== j
);
862 for (j
= 0; j
< mp
->m_quotainfo
->qi_dqperchunk
; j
++) {
863 struct xfs_disk_dquot
*ddq
;
865 ddq
= (struct xfs_disk_dquot
*)&dqb
[j
];
868 * Do a sanity check, and if needed, repair the dqblk. Don't
869 * output any warnings because it's perfectly possible to
870 * find uninitialised dquot blks. See comment in xfs_dqcheck.
872 xfs_dqcheck(mp
, ddq
, id
+j
, type
, XFS_QMOPT_DQREPAIR
,
875 * Reset type in case we are reusing group quota file for
876 * project quotas or vice versa
889 if (xfs_sb_version_hascrc(&mp
->m_sb
)) {
890 xfs_update_cksum((char *)&dqb
[j
],
891 sizeof(struct xfs_dqblk
),
899 struct xfs_mount
*mp
,
902 xfs_filblks_t blkcnt
,
904 struct list_head
*buffer_list
)
911 type
= flags
& XFS_QMOPT_UQUOTA
? XFS_DQ_USER
:
912 (flags
& XFS_QMOPT_PQUOTA
? XFS_DQ_PROJ
: XFS_DQ_GROUP
);
916 * Blkcnt arg can be a very big number, and might even be
917 * larger than the log itself. So, we have to break it up into
918 * manageable-sized transactions.
919 * Note that we don't start a permanent transaction here; we might
920 * not be able to get a log reservation for the whole thing up front,
921 * and we don't really care to either, because we just discard
922 * everything if we were to crash in the middle of this loop.
925 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
926 XFS_FSB_TO_DADDR(mp
, bno
),
927 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
,
931 * CRC and validation errors will return a EFSCORRUPTED here. If
932 * this occurs, re-read without CRC validation so that we can
933 * repair the damage via xfs_qm_reset_dqcounts(). This process
934 * will leave a trace in the log indicating corruption has
937 if (error
== -EFSCORRUPTED
) {
938 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
939 XFS_FSB_TO_DADDR(mp
, bno
),
940 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
,
948 * A corrupt buffer might not have a verifier attached, so
949 * make sure we have the correct one attached before writeback
952 bp
->b_ops
= &xfs_dquot_buf_ops
;
953 xfs_qm_reset_dqcounts(mp
, bp
, firstid
, type
);
954 xfs_buf_delwri_queue(bp
, buffer_list
);
957 /* goto the next block. */
959 firstid
+= mp
->m_quotainfo
->qi_dqperchunk
;
966 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
967 * caller supplied function for every chunk of dquots that we find.
971 struct xfs_mount
*mp
,
972 struct xfs_inode
*qip
,
974 struct list_head
*buffer_list
)
976 struct xfs_bmbt_irec
*map
;
977 int i
, nmaps
; /* number of map entries */
978 int error
; /* return value */
979 xfs_fileoff_t lblkno
;
980 xfs_filblks_t maxlblkcnt
;
982 xfs_fsblock_t rablkno
;
983 xfs_filblks_t rablkcnt
;
987 * This looks racy, but we can't keep an inode lock across a
988 * trans_reserve. But, this gets called during quotacheck, and that
989 * happens only at mount time which is single threaded.
991 if (qip
->i_d
.di_nblocks
== 0)
994 map
= kmem_alloc(XFS_DQITER_MAP_SIZE
* sizeof(*map
), KM_SLEEP
);
997 maxlblkcnt
= XFS_B_TO_FSB(mp
, mp
->m_super
->s_maxbytes
);
1001 nmaps
= XFS_DQITER_MAP_SIZE
;
1003 * We aren't changing the inode itself. Just changing
1004 * some of its data. No new blocks are added here, and
1005 * the inode is never added to the transaction.
1007 lock_mode
= xfs_ilock_data_map_shared(qip
);
1008 error
= xfs_bmapi_read(qip
, lblkno
, maxlblkcnt
- lblkno
,
1010 xfs_iunlock(qip
, lock_mode
);
1014 ASSERT(nmaps
<= XFS_DQITER_MAP_SIZE
);
1015 for (i
= 0; i
< nmaps
; i
++) {
1016 ASSERT(map
[i
].br_startblock
!= DELAYSTARTBLOCK
);
1017 ASSERT(map
[i
].br_blockcount
);
1020 lblkno
+= map
[i
].br_blockcount
;
1022 if (map
[i
].br_startblock
== HOLESTARTBLOCK
)
1025 firstid
= (xfs_dqid_t
) map
[i
].br_startoff
*
1026 mp
->m_quotainfo
->qi_dqperchunk
;
1028 * Do a read-ahead on the next extent.
1030 if ((i
+1 < nmaps
) &&
1031 (map
[i
+1].br_startblock
!= HOLESTARTBLOCK
)) {
1032 rablkcnt
= map
[i
+1].br_blockcount
;
1033 rablkno
= map
[i
+1].br_startblock
;
1034 while (rablkcnt
--) {
1035 xfs_buf_readahead(mp
->m_ddev_targp
,
1036 XFS_FSB_TO_DADDR(mp
, rablkno
),
1037 mp
->m_quotainfo
->qi_dqchunklen
,
1038 &xfs_dquot_buf_ops
);
1043 * Iterate thru all the blks in the extent and
1044 * reset the counters of all the dquots inside them.
1046 error
= xfs_qm_dqiter_bufs(mp
, firstid
,
1047 map
[i
].br_startblock
,
1048 map
[i
].br_blockcount
,
1049 flags
, buffer_list
);
1053 } while (nmaps
> 0);
1061 * Called by dqusage_adjust in doing a quotacheck.
1063 * Given the inode, and a dquot id this updates both the incore dqout as well
1064 * as the buffer copy. This is so that once the quotacheck is done, we can
1065 * just log all the buffers, as opposed to logging numerous updates to
1066 * individual dquots.
1069 xfs_qm_quotacheck_dqadjust(
1070 struct xfs_inode
*ip
,
1076 struct xfs_mount
*mp
= ip
->i_mount
;
1077 struct xfs_dquot
*dqp
;
1080 error
= xfs_qm_dqget(mp
, ip
, id
, type
,
1081 XFS_QMOPT_DQALLOC
| XFS_QMOPT_DOWARN
, &dqp
);
1084 * Shouldn't be able to turn off quotas here.
1086 ASSERT(error
!= -ESRCH
);
1087 ASSERT(error
!= -ENOENT
);
1091 trace_xfs_dqadjust(dqp
);
1094 * Adjust the inode count and the block count to reflect this inode's
1097 be64_add_cpu(&dqp
->q_core
.d_icount
, 1);
1098 dqp
->q_res_icount
++;
1100 be64_add_cpu(&dqp
->q_core
.d_bcount
, nblks
);
1101 dqp
->q_res_bcount
+= nblks
;
1104 be64_add_cpu(&dqp
->q_core
.d_rtbcount
, rtblks
);
1105 dqp
->q_res_rtbcount
+= rtblks
;
1109 * Set default limits, adjust timers (since we changed usages)
1111 * There are no timers for the default values set in the root dquot.
1113 if (dqp
->q_core
.d_id
) {
1114 xfs_qm_adjust_dqlimits(mp
, dqp
);
1115 xfs_qm_adjust_dqtimers(mp
, &dqp
->q_core
);
1118 dqp
->dq_flags
|= XFS_DQ_DIRTY
;
1126 xfs_qcnt_t
*O_rtblks
)
1128 xfs_filblks_t rtblks
; /* total rt blks */
1129 xfs_extnum_t idx
; /* extent record index */
1130 xfs_ifork_t
*ifp
; /* inode fork pointer */
1131 xfs_extnum_t nextents
; /* number of extent entries */
1134 ASSERT(XFS_IS_REALTIME_INODE(ip
));
1135 ifp
= XFS_IFORK_PTR(ip
, XFS_DATA_FORK
);
1136 if (!(ifp
->if_flags
& XFS_IFEXTENTS
)) {
1137 if ((error
= xfs_iread_extents(NULL
, ip
, XFS_DATA_FORK
)))
1141 nextents
= xfs_iext_count(ifp
);
1142 for (idx
= 0; idx
< nextents
; idx
++)
1143 rtblks
+= xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp
, idx
));
1144 *O_rtblks
= (xfs_qcnt_t
)rtblks
;
1149 * callback routine supplied to bulkstat(). Given an inumber, find its
1150 * dquots and update them to account for resources taken by that inode.
1154 xfs_qm_dqusage_adjust(
1155 xfs_mount_t
*mp
, /* mount point for filesystem */
1156 xfs_ino_t ino
, /* inode number to get data for */
1157 void __user
*buffer
, /* not used */
1158 int ubsize
, /* not used */
1159 int *ubused
, /* not used */
1160 int *res
) /* result code value */
1163 xfs_qcnt_t nblks
, rtblks
= 0;
1166 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1169 * rootino must have its resources accounted for, not so with the quota
1172 if (xfs_is_quota_inode(&mp
->m_sb
, ino
)) {
1173 *res
= BULKSTAT_RV_NOTHING
;
1178 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1179 * interface expects the inode to be exclusively locked because that's
1180 * the case in all other instances. It's OK that we do this because
1181 * quotacheck is done only at mount time.
1183 error
= xfs_iget(mp
, NULL
, ino
, XFS_IGET_DONTCACHE
, XFS_ILOCK_EXCL
,
1186 *res
= BULKSTAT_RV_NOTHING
;
1190 ASSERT(ip
->i_delayed_blks
== 0);
1192 if (XFS_IS_REALTIME_INODE(ip
)) {
1194 * Walk thru the extent list and count the realtime blocks.
1196 error
= xfs_qm_get_rtblks(ip
, &rtblks
);
1201 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
- rtblks
;
1204 * Add the (disk blocks and inode) resources occupied by this
1205 * inode to its dquots. We do this adjustment in the incore dquot,
1206 * and also copy the changes to its buffer.
1207 * We don't care about putting these changes in a transaction
1208 * envelope because if we crash in the middle of a 'quotacheck'
1209 * we have to start from the beginning anyway.
1210 * Once we're done, we'll log all the dquot bufs.
1212 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1213 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1215 if (XFS_IS_UQUOTA_ON(mp
)) {
1216 error
= xfs_qm_quotacheck_dqadjust(ip
, ip
->i_d
.di_uid
,
1217 XFS_DQ_USER
, nblks
, rtblks
);
1222 if (XFS_IS_GQUOTA_ON(mp
)) {
1223 error
= xfs_qm_quotacheck_dqadjust(ip
, ip
->i_d
.di_gid
,
1224 XFS_DQ_GROUP
, nblks
, rtblks
);
1229 if (XFS_IS_PQUOTA_ON(mp
)) {
1230 error
= xfs_qm_quotacheck_dqadjust(ip
, xfs_get_projid(ip
),
1231 XFS_DQ_PROJ
, nblks
, rtblks
);
1236 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1238 *res
= BULKSTAT_RV_DIDONE
;
1242 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1244 *res
= BULKSTAT_RV_GIVEUP
;
1250 struct xfs_dquot
*dqp
,
1253 struct xfs_mount
*mp
= dqp
->q_mount
;
1254 struct list_head
*buffer_list
= data
;
1255 struct xfs_buf
*bp
= NULL
;
1259 if (dqp
->dq_flags
& XFS_DQ_FREEING
)
1261 if (!XFS_DQ_IS_DIRTY(dqp
))
1265 * The only way the dquot is already flush locked by the time quotacheck
1266 * gets here is if reclaim flushed it before the dqadjust walk dirtied
1267 * it for the final time. Quotacheck collects all dquot bufs in the
1268 * local delwri queue before dquots are dirtied, so reclaim can't have
1269 * possibly queued it for I/O. The only way out is to push the buffer to
1270 * cycle the flush lock.
1272 if (!xfs_dqflock_nowait(dqp
)) {
1273 /* buf is pinned in-core by delwri list */
1274 DEFINE_SINGLE_BUF_MAP(map
, dqp
->q_blkno
,
1275 mp
->m_quotainfo
->qi_dqchunklen
);
1276 bp
= _xfs_buf_find(mp
->m_ddev_targp
, &map
, 1, 0, NULL
);
1283 xfs_buf_delwri_pushbuf(bp
, buffer_list
);
1290 error
= xfs_qm_dqflush(dqp
, &bp
);
1294 xfs_buf_delwri_queue(bp
, buffer_list
);
1302 * Walk thru all the filesystem inodes and construct a consistent view
1303 * of the disk quota world. If the quotacheck fails, disable quotas.
1309 int done
, count
, error
, error2
;
1313 LIST_HEAD (buffer_list
);
1314 struct xfs_inode
*uip
= mp
->m_quotainfo
->qi_uquotaip
;
1315 struct xfs_inode
*gip
= mp
->m_quotainfo
->qi_gquotaip
;
1316 struct xfs_inode
*pip
= mp
->m_quotainfo
->qi_pquotaip
;
1323 ASSERT(uip
|| gip
|| pip
);
1324 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1326 xfs_notice(mp
, "Quotacheck needed: Please wait.");
1329 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1330 * their counters to zero. We need a clean slate.
1331 * We don't log our changes till later.
1334 error
= xfs_qm_dqiterate(mp
, uip
, XFS_QMOPT_UQUOTA
,
1338 flags
|= XFS_UQUOTA_CHKD
;
1342 error
= xfs_qm_dqiterate(mp
, gip
, XFS_QMOPT_GQUOTA
,
1346 flags
|= XFS_GQUOTA_CHKD
;
1350 error
= xfs_qm_dqiterate(mp
, pip
, XFS_QMOPT_PQUOTA
,
1354 flags
|= XFS_PQUOTA_CHKD
;
1359 * Iterate thru all the inodes in the file system,
1360 * adjusting the corresponding dquot counters in core.
1362 error
= xfs_bulkstat(mp
, &lastino
, &count
,
1363 xfs_qm_dqusage_adjust
,
1364 structsz
, NULL
, &done
);
1371 * We've made all the changes that we need to make incore. Flush them
1372 * down to disk buffers if everything was updated successfully.
1374 if (XFS_IS_UQUOTA_ON(mp
)) {
1375 error
= xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_flush_one
,
1378 if (XFS_IS_GQUOTA_ON(mp
)) {
1379 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_flush_one
,
1384 if (XFS_IS_PQUOTA_ON(mp
)) {
1385 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_flush_one
,
1391 error2
= xfs_buf_delwri_submit(&buffer_list
);
1396 * We can get this error if we couldn't do a dquot allocation inside
1397 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1398 * dirty dquots that might be cached, we just want to get rid of them
1399 * and turn quotaoff. The dquots won't be attached to any of the inodes
1400 * at this point (because we intentionally didn't in dqget_noattach).
1403 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
1408 * If one type of quotas is off, then it will lose its
1409 * quotachecked status, since we won't be doing accounting for
1410 * that type anymore.
1412 mp
->m_qflags
&= ~XFS_ALL_QUOTA_CHKD
;
1413 mp
->m_qflags
|= flags
;
1416 xfs_buf_delwri_cancel(&buffer_list
);
1420 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1423 * We must turn off quotas.
1425 ASSERT(mp
->m_quotainfo
!= NULL
);
1426 xfs_qm_destroy_quotainfo(mp
);
1427 if (xfs_mount_reset_sbqflags(mp
)) {
1429 "Quotacheck: Failed to reset quota flags.");
1432 xfs_notice(mp
, "Quotacheck: Done.");
1437 * This is called from xfs_mountfs to start quotas and initialize all
1438 * necessary data structures like quotainfo. This is also responsible for
1439 * running a quotacheck as necessary. We are guaranteed that the superblock
1440 * is consistently read in at this point.
1442 * If we fail here, the mount will continue with quota turned off. We don't
1443 * need to inidicate success or failure at all.
1446 xfs_qm_mount_quotas(
1447 struct xfs_mount
*mp
)
1453 * If quotas on realtime volumes is not supported, we disable
1454 * quotas immediately.
1456 if (mp
->m_sb
.sb_rextents
) {
1457 xfs_notice(mp
, "Cannot turn on quotas for realtime filesystem");
1462 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1465 * Allocate the quotainfo structure inside the mount struct, and
1466 * create quotainode(s), and change/rev superblock if necessary.
1468 error
= xfs_qm_init_quotainfo(mp
);
1471 * We must turn off quotas.
1473 ASSERT(mp
->m_quotainfo
== NULL
);
1478 * If any of the quotas are not consistent, do a quotacheck.
1480 if (XFS_QM_NEED_QUOTACHECK(mp
)) {
1481 error
= xfs_qm_quotacheck(mp
);
1483 /* Quotacheck failed and disabled quotas. */
1488 * If one type of quotas is off, then it will lose its
1489 * quotachecked status, since we won't be doing accounting for
1490 * that type anymore.
1492 if (!XFS_IS_UQUOTA_ON(mp
))
1493 mp
->m_qflags
&= ~XFS_UQUOTA_CHKD
;
1494 if (!XFS_IS_GQUOTA_ON(mp
))
1495 mp
->m_qflags
&= ~XFS_GQUOTA_CHKD
;
1496 if (!XFS_IS_PQUOTA_ON(mp
))
1497 mp
->m_qflags
&= ~XFS_PQUOTA_CHKD
;
1501 * We actually don't have to acquire the m_sb_lock at all.
1502 * This can only be called from mount, and that's single threaded. XXX
1504 spin_lock(&mp
->m_sb_lock
);
1505 sbf
= mp
->m_sb
.sb_qflags
;
1506 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
;
1507 spin_unlock(&mp
->m_sb_lock
);
1509 if (sbf
!= (mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
)) {
1510 if (xfs_sync_sb(mp
, false)) {
1512 * We could only have been turning quotas off.
1513 * We aren't in very good shape actually because
1514 * the incore structures are convinced that quotas are
1515 * off, but the on disk superblock doesn't know that !
1517 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp
)));
1518 xfs_alert(mp
, "%s: Superblock update failed!",
1524 xfs_warn(mp
, "Failed to initialize disk quotas.");
1530 * This is called after the superblock has been read in and we're ready to
1531 * iget the quota inodes.
1534 xfs_qm_init_quotainos(
1537 struct xfs_inode
*uip
= NULL
;
1538 struct xfs_inode
*gip
= NULL
;
1539 struct xfs_inode
*pip
= NULL
;
1543 ASSERT(mp
->m_quotainfo
);
1546 * Get the uquota and gquota inodes
1548 if (xfs_sb_version_hasquota(&mp
->m_sb
)) {
1549 if (XFS_IS_UQUOTA_ON(mp
) &&
1550 mp
->m_sb
.sb_uquotino
!= NULLFSINO
) {
1551 ASSERT(mp
->m_sb
.sb_uquotino
> 0);
1552 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_uquotino
,
1557 if (XFS_IS_GQUOTA_ON(mp
) &&
1558 mp
->m_sb
.sb_gquotino
!= NULLFSINO
) {
1559 ASSERT(mp
->m_sb
.sb_gquotino
> 0);
1560 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_gquotino
,
1565 if (XFS_IS_PQUOTA_ON(mp
) &&
1566 mp
->m_sb
.sb_pquotino
!= NULLFSINO
) {
1567 ASSERT(mp
->m_sb
.sb_pquotino
> 0);
1568 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_pquotino
,
1574 flags
|= XFS_QMOPT_SBVERSION
;
1578 * Create the three inodes, if they don't exist already. The changes
1579 * made above will get added to a transaction and logged in one of
1580 * the qino_alloc calls below. If the device is readonly,
1581 * temporarily switch to read-write to do this.
1583 if (XFS_IS_UQUOTA_ON(mp
) && uip
== NULL
) {
1584 error
= xfs_qm_qino_alloc(mp
, &uip
,
1585 flags
| XFS_QMOPT_UQUOTA
);
1589 flags
&= ~XFS_QMOPT_SBVERSION
;
1591 if (XFS_IS_GQUOTA_ON(mp
) && gip
== NULL
) {
1592 error
= xfs_qm_qino_alloc(mp
, &gip
,
1593 flags
| XFS_QMOPT_GQUOTA
);
1597 flags
&= ~XFS_QMOPT_SBVERSION
;
1599 if (XFS_IS_PQUOTA_ON(mp
) && pip
== NULL
) {
1600 error
= xfs_qm_qino_alloc(mp
, &pip
,
1601 flags
| XFS_QMOPT_PQUOTA
);
1606 mp
->m_quotainfo
->qi_uquotaip
= uip
;
1607 mp
->m_quotainfo
->qi_gquotaip
= gip
;
1608 mp
->m_quotainfo
->qi_pquotaip
= pip
;
1624 struct xfs_dquot
*dqp
)
1626 struct xfs_mount
*mp
= dqp
->q_mount
;
1627 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
1629 mutex_lock(&qi
->qi_tree_lock
);
1630 radix_tree_delete(xfs_dquot_tree(qi
, dqp
->q_core
.d_flags
),
1631 be32_to_cpu(dqp
->q_core
.d_id
));
1634 mutex_unlock(&qi
->qi_tree_lock
);
1636 xfs_qm_dqdestroy(dqp
);
1639 /* --------------- utility functions for vnodeops ---------------- */
1643 * Given an inode, a uid, gid and prid make sure that we have
1644 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1645 * quotas by creating this file.
1646 * This also attaches dquot(s) to the given inode after locking it,
1647 * and returns the dquots corresponding to the uid and/or gid.
1649 * in : inode (unlocked)
1650 * out : udquot, gdquot with references taken and unlocked
1654 struct xfs_inode
*ip
,
1659 struct xfs_dquot
**O_udqpp
,
1660 struct xfs_dquot
**O_gdqpp
,
1661 struct xfs_dquot
**O_pdqpp
)
1663 struct xfs_mount
*mp
= ip
->i_mount
;
1664 struct xfs_dquot
*uq
= NULL
;
1665 struct xfs_dquot
*gq
= NULL
;
1666 struct xfs_dquot
*pq
= NULL
;
1670 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1673 lockflags
= XFS_ILOCK_EXCL
;
1674 xfs_ilock(ip
, lockflags
);
1676 if ((flags
& XFS_QMOPT_INHERIT
) && XFS_INHERIT_GID(ip
))
1677 gid
= ip
->i_d
.di_gid
;
1680 * Attach the dquot(s) to this inode, doing a dquot allocation
1681 * if necessary. The dquot(s) will not be locked.
1683 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
1684 error
= xfs_qm_dqattach_locked(ip
, XFS_QMOPT_DQALLOC
);
1686 xfs_iunlock(ip
, lockflags
);
1691 if ((flags
& XFS_QMOPT_UQUOTA
) && XFS_IS_UQUOTA_ON(mp
)) {
1692 if (ip
->i_d
.di_uid
!= uid
) {
1694 * What we need is the dquot that has this uid, and
1695 * if we send the inode to dqget, the uid of the inode
1696 * takes priority over what's sent in the uid argument.
1697 * We must unlock inode here before calling dqget if
1698 * we're not sending the inode, because otherwise
1699 * we'll deadlock by doing trans_reserve while
1702 xfs_iunlock(ip
, lockflags
);
1703 error
= xfs_qm_dqget(mp
, NULL
, uid
,
1709 ASSERT(error
!= -ENOENT
);
1713 * Get the ilock in the right order.
1716 lockflags
= XFS_ILOCK_SHARED
;
1717 xfs_ilock(ip
, lockflags
);
1720 * Take an extra reference, because we'll return
1723 ASSERT(ip
->i_udquot
);
1724 uq
= xfs_qm_dqhold(ip
->i_udquot
);
1727 if ((flags
& XFS_QMOPT_GQUOTA
) && XFS_IS_GQUOTA_ON(mp
)) {
1728 if (ip
->i_d
.di_gid
!= gid
) {
1729 xfs_iunlock(ip
, lockflags
);
1730 error
= xfs_qm_dqget(mp
, NULL
, gid
,
1736 ASSERT(error
!= -ENOENT
);
1740 lockflags
= XFS_ILOCK_SHARED
;
1741 xfs_ilock(ip
, lockflags
);
1743 ASSERT(ip
->i_gdquot
);
1744 gq
= xfs_qm_dqhold(ip
->i_gdquot
);
1747 if ((flags
& XFS_QMOPT_PQUOTA
) && XFS_IS_PQUOTA_ON(mp
)) {
1748 if (xfs_get_projid(ip
) != prid
) {
1749 xfs_iunlock(ip
, lockflags
);
1750 error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)prid
,
1756 ASSERT(error
!= -ENOENT
);
1760 lockflags
= XFS_ILOCK_SHARED
;
1761 xfs_ilock(ip
, lockflags
);
1763 ASSERT(ip
->i_pdquot
);
1764 pq
= xfs_qm_dqhold(ip
->i_pdquot
);
1768 trace_xfs_dquot_dqalloc(ip
);
1770 xfs_iunlock(ip
, lockflags
);
1792 * Actually transfer ownership, and do dquot modifications.
1793 * These were already reserved.
1799 xfs_dquot_t
**IO_olddq
,
1802 xfs_dquot_t
*prevdq
;
1803 uint bfield
= XFS_IS_REALTIME_INODE(ip
) ?
1804 XFS_TRANS_DQ_RTBCOUNT
: XFS_TRANS_DQ_BCOUNT
;
1807 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1808 ASSERT(XFS_IS_QUOTA_RUNNING(ip
->i_mount
));
1813 ASSERT(prevdq
!= newdq
);
1815 xfs_trans_mod_dquot(tp
, prevdq
, bfield
, -(ip
->i_d
.di_nblocks
));
1816 xfs_trans_mod_dquot(tp
, prevdq
, XFS_TRANS_DQ_ICOUNT
, -1);
1818 /* the sparkling new dquot */
1819 xfs_trans_mod_dquot(tp
, newdq
, bfield
, ip
->i_d
.di_nblocks
);
1820 xfs_trans_mod_dquot(tp
, newdq
, XFS_TRANS_DQ_ICOUNT
, 1);
1823 * Take an extra reference, because the inode is going to keep
1824 * this dquot pointer even after the trans_commit.
1826 *IO_olddq
= xfs_qm_dqhold(newdq
);
1832 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1835 xfs_qm_vop_chown_reserve(
1836 struct xfs_trans
*tp
,
1837 struct xfs_inode
*ip
,
1838 struct xfs_dquot
*udqp
,
1839 struct xfs_dquot
*gdqp
,
1840 struct xfs_dquot
*pdqp
,
1843 struct xfs_mount
*mp
= ip
->i_mount
;
1844 uint delblks
, blkflags
, prjflags
= 0;
1845 struct xfs_dquot
*udq_unres
= NULL
;
1846 struct xfs_dquot
*gdq_unres
= NULL
;
1847 struct xfs_dquot
*pdq_unres
= NULL
;
1848 struct xfs_dquot
*udq_delblks
= NULL
;
1849 struct xfs_dquot
*gdq_delblks
= NULL
;
1850 struct xfs_dquot
*pdq_delblks
= NULL
;
1854 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
|XFS_ILOCK_SHARED
));
1855 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1857 delblks
= ip
->i_delayed_blks
;
1858 blkflags
= XFS_IS_REALTIME_INODE(ip
) ?
1859 XFS_QMOPT_RES_RTBLKS
: XFS_QMOPT_RES_REGBLKS
;
1861 if (XFS_IS_UQUOTA_ON(mp
) && udqp
&&
1862 ip
->i_d
.di_uid
!= be32_to_cpu(udqp
->q_core
.d_id
)) {
1865 * If there are delayed allocation blocks, then we have to
1866 * unreserve those from the old dquot, and add them to the
1870 ASSERT(ip
->i_udquot
);
1871 udq_unres
= ip
->i_udquot
;
1874 if (XFS_IS_GQUOTA_ON(ip
->i_mount
) && gdqp
&&
1875 ip
->i_d
.di_gid
!= be32_to_cpu(gdqp
->q_core
.d_id
)) {
1878 ASSERT(ip
->i_gdquot
);
1879 gdq_unres
= ip
->i_gdquot
;
1883 if (XFS_IS_PQUOTA_ON(ip
->i_mount
) && pdqp
&&
1884 xfs_get_projid(ip
) != be32_to_cpu(pdqp
->q_core
.d_id
)) {
1885 prjflags
= XFS_QMOPT_ENOSPC
;
1888 ASSERT(ip
->i_pdquot
);
1889 pdq_unres
= ip
->i_pdquot
;
1893 error
= xfs_trans_reserve_quota_bydquots(tp
, ip
->i_mount
,
1894 udq_delblks
, gdq_delblks
, pdq_delblks
,
1895 ip
->i_d
.di_nblocks
, 1,
1896 flags
| blkflags
| prjflags
);
1901 * Do the delayed blks reservations/unreservations now. Since, these
1902 * are done without the help of a transaction, if a reservation fails
1903 * its previous reservations won't be automatically undone by trans
1904 * code. So, we have to do it manually here.
1908 * Do the reservations first. Unreservation can't fail.
1910 ASSERT(udq_delblks
|| gdq_delblks
|| pdq_delblks
);
1911 ASSERT(udq_unres
|| gdq_unres
|| pdq_unres
);
1912 error
= xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
1913 udq_delblks
, gdq_delblks
, pdq_delblks
,
1914 (xfs_qcnt_t
)delblks
, 0,
1915 flags
| blkflags
| prjflags
);
1918 xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
1919 udq_unres
, gdq_unres
, pdq_unres
,
1920 -((xfs_qcnt_t
)delblks
), 0, blkflags
);
1927 xfs_qm_vop_rename_dqattach(
1928 struct xfs_inode
**i_tab
)
1930 struct xfs_mount
*mp
= i_tab
[0]->i_mount
;
1933 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1936 for (i
= 0; (i
< 4 && i_tab
[i
]); i
++) {
1937 struct xfs_inode
*ip
= i_tab
[i
];
1941 * Watch out for duplicate entries in the table.
1943 if (i
== 0 || ip
!= i_tab
[i
-1]) {
1944 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
1945 error
= xfs_qm_dqattach(ip
, 0);
1955 xfs_qm_vop_create_dqattach(
1956 struct xfs_trans
*tp
,
1957 struct xfs_inode
*ip
,
1958 struct xfs_dquot
*udqp
,
1959 struct xfs_dquot
*gdqp
,
1960 struct xfs_dquot
*pdqp
)
1962 struct xfs_mount
*mp
= tp
->t_mountp
;
1964 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1967 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1968 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1970 if (udqp
&& XFS_IS_UQUOTA_ON(mp
)) {
1971 ASSERT(ip
->i_udquot
== NULL
);
1972 ASSERT(ip
->i_d
.di_uid
== be32_to_cpu(udqp
->q_core
.d_id
));
1974 ip
->i_udquot
= xfs_qm_dqhold(udqp
);
1975 xfs_trans_mod_dquot(tp
, udqp
, XFS_TRANS_DQ_ICOUNT
, 1);
1977 if (gdqp
&& XFS_IS_GQUOTA_ON(mp
)) {
1978 ASSERT(ip
->i_gdquot
== NULL
);
1979 ASSERT(ip
->i_d
.di_gid
== be32_to_cpu(gdqp
->q_core
.d_id
));
1980 ip
->i_gdquot
= xfs_qm_dqhold(gdqp
);
1981 xfs_trans_mod_dquot(tp
, gdqp
, XFS_TRANS_DQ_ICOUNT
, 1);
1983 if (pdqp
&& XFS_IS_PQUOTA_ON(mp
)) {
1984 ASSERT(ip
->i_pdquot
== NULL
);
1985 ASSERT(xfs_get_projid(ip
) == be32_to_cpu(pdqp
->q_core
.d_id
));
1987 ip
->i_pdquot
= xfs_qm_dqhold(pdqp
);
1988 xfs_trans_mod_dquot(tp
, pdqp
, XFS_TRANS_DQ_ICOUNT
, 1);