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"
27 #include "xfs_mount.h"
28 #include "xfs_inode.h"
29 #include "xfs_ialloc.h"
30 #include "xfs_itable.h"
31 #include "xfs_quota.h"
32 #include "xfs_error.h"
34 #include "xfs_bmap_btree.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"
41 #include "xfs_dinode.h"
44 * The global quota manager. There is only one of these for the entire
45 * system, _not_ one per file system. XQM keeps track of the overall
46 * quota functionality, including maintaining the freelist and hash
49 STATIC
int xfs_qm_init_quotainos(xfs_mount_t
*);
50 STATIC
int xfs_qm_init_quotainfo(xfs_mount_t
*);
53 STATIC
void xfs_qm_dqfree_one(struct xfs_dquot
*dqp
);
55 * We use the batch lookup interface to iterate over the dquots as it
56 * currently is the only interface into the radix tree code that allows
57 * fuzzy lookups instead of exact matches. Holding the lock over multiple
58 * operations is fine as all callers are used either during mount/umount
61 #define XFS_DQ_LOOKUP_BATCH 32
67 int (*execute
)(struct xfs_dquot
*dqp
, void *data
),
70 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
71 struct radix_tree_root
*tree
= xfs_dquot_tree(qi
, type
);
83 struct xfs_dquot
*batch
[XFS_DQ_LOOKUP_BATCH
];
87 mutex_lock(&qi
->qi_tree_lock
);
88 nr_found
= radix_tree_gang_lookup(tree
, (void **)batch
,
89 next_index
, XFS_DQ_LOOKUP_BATCH
);
91 mutex_unlock(&qi
->qi_tree_lock
);
95 for (i
= 0; i
< nr_found
; i
++) {
96 struct xfs_dquot
*dqp
= batch
[i
];
98 next_index
= be32_to_cpu(dqp
->q_core
.d_id
) + 1;
100 error
= execute(batch
[i
], data
);
101 if (error
== EAGAIN
) {
105 if (error
&& last_error
!= EFSCORRUPTED
)
109 mutex_unlock(&qi
->qi_tree_lock
);
111 /* bail out if the filesystem is corrupted. */
112 if (last_error
== EFSCORRUPTED
) {
128 * Purge a dquot from all tracking data structures and free it.
132 struct xfs_dquot
*dqp
,
135 struct xfs_mount
*mp
= dqp
->q_mount
;
136 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
137 struct xfs_dquot
*gdqp
= NULL
;
138 struct xfs_dquot
*pdqp
= NULL
;
141 if ((dqp
->dq_flags
& XFS_DQ_FREEING
) || dqp
->q_nrefs
!= 0) {
147 * If this quota has a hint attached, prepare for releasing it now.
149 gdqp
= dqp
->q_gdquot
;
152 dqp
->q_gdquot
= NULL
;
155 pdqp
= dqp
->q_pdquot
;
158 dqp
->q_pdquot
= NULL
;
161 dqp
->dq_flags
|= XFS_DQ_FREEING
;
166 * If we are turning this type of quotas off, we don't care
167 * about the dirty metadata sitting in this dquot. OTOH, if
168 * we're unmounting, we do care, so we flush it and wait.
170 if (XFS_DQ_IS_DIRTY(dqp
)) {
171 struct xfs_buf
*bp
= NULL
;
175 * We don't care about getting disk errors here. We need
176 * to purge this dquot anyway, so we go ahead regardless.
178 error
= xfs_qm_dqflush(dqp
, &bp
);
180 xfs_warn(mp
, "%s: dquot %p flush failed",
183 error
= xfs_bwrite(bp
);
189 ASSERT(atomic_read(&dqp
->q_pincount
) == 0);
190 ASSERT(XFS_FORCED_SHUTDOWN(mp
) ||
191 !(dqp
->q_logitem
.qli_item
.li_flags
& XFS_LI_IN_AIL
));
196 radix_tree_delete(xfs_dquot_tree(qi
, dqp
->q_core
.d_flags
),
197 be32_to_cpu(dqp
->q_core
.d_id
));
201 * We move dquots to the freelist as soon as their reference count
202 * hits zero, so it really should be on the freelist here.
204 ASSERT(!list_empty(&dqp
->q_lru
));
205 list_lru_del(&qi
->qi_lru
, &dqp
->q_lru
);
206 XFS_STATS_DEC(xs_qm_dquot_unused
);
208 xfs_qm_dqdestroy(dqp
);
218 * Purge the dquot cache.
222 struct xfs_mount
*mp
,
225 if (flags
& XFS_QMOPT_UQUOTA
)
226 xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_dqpurge
, NULL
);
227 if (flags
& XFS_QMOPT_GQUOTA
)
228 xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_dqpurge
, NULL
);
229 if (flags
& XFS_QMOPT_PQUOTA
)
230 xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_dqpurge
, NULL
);
234 * Just destroy the quotainfo structure.
238 struct xfs_mount
*mp
)
240 if (mp
->m_quotainfo
) {
241 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
242 xfs_qm_destroy_quotainfo(mp
);
248 * This is called from xfs_mountfs to start quotas and initialize all
249 * necessary data structures like quotainfo. This is also responsible for
250 * running a quotacheck as necessary. We are guaranteed that the superblock
251 * is consistently read in at this point.
253 * If we fail here, the mount will continue with quota turned off. We don't
254 * need to inidicate success or failure at all.
264 * If quotas on realtime volumes is not supported, we disable
265 * quotas immediately.
267 if (mp
->m_sb
.sb_rextents
) {
268 xfs_notice(mp
, "Cannot turn on quotas for realtime filesystem");
273 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
276 * Allocate the quotainfo structure inside the mount struct, and
277 * create quotainode(s), and change/rev superblock if necessary.
279 error
= xfs_qm_init_quotainfo(mp
);
282 * We must turn off quotas.
284 ASSERT(mp
->m_quotainfo
== NULL
);
289 * If any of the quotas are not consistent, do a quotacheck.
291 if (XFS_QM_NEED_QUOTACHECK(mp
)) {
292 error
= xfs_qm_quotacheck(mp
);
294 /* Quotacheck failed and disabled quotas. */
299 * If one type of quotas is off, then it will lose its
300 * quotachecked status, since we won't be doing accounting for
303 if (!XFS_IS_UQUOTA_ON(mp
))
304 mp
->m_qflags
&= ~XFS_UQUOTA_CHKD
;
305 if (!XFS_IS_GQUOTA_ON(mp
))
306 mp
->m_qflags
&= ~XFS_GQUOTA_CHKD
;
307 if (!XFS_IS_PQUOTA_ON(mp
))
308 mp
->m_qflags
&= ~XFS_PQUOTA_CHKD
;
312 * We actually don't have to acquire the m_sb_lock at all.
313 * This can only be called from mount, and that's single threaded. XXX
315 spin_lock(&mp
->m_sb_lock
);
316 sbf
= mp
->m_sb
.sb_qflags
;
317 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
;
318 spin_unlock(&mp
->m_sb_lock
);
320 if (sbf
!= (mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
)) {
321 if (xfs_qm_write_sb_changes(mp
, XFS_SB_QFLAGS
)) {
323 * We could only have been turning quotas off.
324 * We aren't in very good shape actually because
325 * the incore structures are convinced that quotas are
326 * off, but the on disk superblock doesn't know that !
328 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp
)));
329 xfs_alert(mp
, "%s: Superblock update failed!",
335 xfs_warn(mp
, "Failed to initialize disk quotas.");
341 * Called from the vfsops layer.
344 xfs_qm_unmount_quotas(
348 * Release the dquots that root inode, et al might be holding,
349 * before we flush quotas and blow away the quotainfo structure.
351 ASSERT(mp
->m_rootip
);
352 xfs_qm_dqdetach(mp
->m_rootip
);
354 xfs_qm_dqdetach(mp
->m_rbmip
);
356 xfs_qm_dqdetach(mp
->m_rsumip
);
359 * Release the quota inodes.
361 if (mp
->m_quotainfo
) {
362 if (mp
->m_quotainfo
->qi_uquotaip
) {
363 IRELE(mp
->m_quotainfo
->qi_uquotaip
);
364 mp
->m_quotainfo
->qi_uquotaip
= NULL
;
366 if (mp
->m_quotainfo
->qi_gquotaip
) {
367 IRELE(mp
->m_quotainfo
->qi_gquotaip
);
368 mp
->m_quotainfo
->qi_gquotaip
= NULL
;
370 if (mp
->m_quotainfo
->qi_pquotaip
) {
371 IRELE(mp
->m_quotainfo
->qi_pquotaip
);
372 mp
->m_quotainfo
->qi_pquotaip
= NULL
;
383 xfs_dquot_t
*udqhint
, /* hint */
384 xfs_dquot_t
**IO_idqpp
)
389 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
393 * See if we already have it in the inode itself. IO_idqpp is
394 * &i_udquot or &i_gdquot. This made the code look weird, but
395 * made the logic a lot simpler.
399 trace_xfs_dqattach_found(dqp
);
404 * udqhint is the i_udquot field in inode, and is non-NULL only
405 * when the type arg is group/project. Its purpose is to save a
406 * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside
410 ASSERT(type
== XFS_DQ_GROUP
|| type
== XFS_DQ_PROJ
);
414 * No need to take dqlock to look at the id.
416 * The ID can't change until it gets reclaimed, and it won't
417 * be reclaimed as long as we have a ref from inode and we
420 if (type
== XFS_DQ_GROUP
)
421 dqp
= udqhint
->q_gdquot
;
423 dqp
= udqhint
->q_pdquot
;
424 if (dqp
&& be32_to_cpu(dqp
->q_core
.d_id
) == id
) {
425 ASSERT(*IO_idqpp
== NULL
);
427 *IO_idqpp
= xfs_qm_dqhold(dqp
);
428 xfs_dqunlock(udqhint
);
433 * We can't hold a dquot lock when we call the dqget code.
434 * We'll deadlock in no time, because of (not conforming to)
435 * lock ordering - the inodelock comes before any dquot lock,
436 * and we may drop and reacquire the ilock in xfs_qm_dqget().
438 xfs_dqunlock(udqhint
);
442 * Find the dquot from somewhere. This bumps the
443 * reference count of dquot and returns it locked.
444 * This can return ENOENT if dquot didn't exist on
445 * disk and we didn't ask it to allocate;
446 * ESRCH if quotas got turned off suddenly.
448 error
= xfs_qm_dqget(ip
->i_mount
, ip
, id
, type
,
449 doalloc
| XFS_QMOPT_DOWARN
, &dqp
);
453 trace_xfs_dqattach_get(dqp
);
456 * dqget may have dropped and re-acquired the ilock, but it guarantees
457 * that the dquot returned is the one that should go in the inode.
466 * Given a udquot and group/project type, attach the group/project
467 * dquot pointer to the udquot as a hint for future lookups.
470 xfs_qm_dqattach_hint(
471 struct xfs_inode
*ip
,
474 struct xfs_dquot
**dqhintp
;
475 struct xfs_dquot
*dqp
;
476 struct xfs_dquot
*udq
= ip
->i_udquot
;
478 ASSERT(type
== XFS_DQ_GROUP
|| type
== XFS_DQ_PROJ
);
482 if (type
== XFS_DQ_GROUP
) {
484 dqhintp
= &udq
->q_gdquot
;
487 dqhintp
= &udq
->q_pdquot
;
491 struct xfs_dquot
*tmp
;
501 *dqhintp
= xfs_qm_dqhold(dqp
);
507 xfs_qm_need_dqattach(
508 struct xfs_inode
*ip
)
510 struct xfs_mount
*mp
= ip
->i_mount
;
512 if (!XFS_IS_QUOTA_RUNNING(mp
))
514 if (!XFS_IS_QUOTA_ON(mp
))
516 if (!XFS_NOT_DQATTACHED(mp
, ip
))
518 if (xfs_is_quota_inode(&mp
->m_sb
, ip
->i_ino
))
524 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
526 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
527 * Inode may get unlocked and relocked in here, and the caller must deal with
531 xfs_qm_dqattach_locked(
535 xfs_mount_t
*mp
= ip
->i_mount
;
539 if (!xfs_qm_need_dqattach(ip
))
542 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
544 if (XFS_IS_UQUOTA_ON(mp
)) {
545 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
546 flags
& XFS_QMOPT_DQALLOC
,
547 NULL
, &ip
->i_udquot
);
553 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
554 if (XFS_IS_GQUOTA_ON(mp
)) {
555 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
556 flags
& XFS_QMOPT_DQALLOC
,
557 ip
->i_udquot
, &ip
->i_gdquot
);
559 * Don't worry about the udquot that we may have
560 * attached above. It'll get detached, if not already.
567 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
568 if (XFS_IS_PQUOTA_ON(mp
)) {
569 error
= xfs_qm_dqattach_one(ip
, xfs_get_projid(ip
), XFS_DQ_PROJ
,
570 flags
& XFS_QMOPT_DQALLOC
,
571 ip
->i_udquot
, &ip
->i_pdquot
);
573 * Don't worry about the udquot that we may have
574 * attached above. It'll get detached, if not already.
582 * Attach this group/project quota to the user quota as a hint.
583 * This WON'T, in general, result in a thrash.
585 if (nquotas
> 1 && ip
->i_udquot
) {
586 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
587 ASSERT(ip
->i_gdquot
|| !XFS_IS_GQUOTA_ON(mp
));
588 ASSERT(ip
->i_pdquot
|| !XFS_IS_PQUOTA_ON(mp
));
591 * We do not have i_udquot locked at this point, but this check
592 * is OK since we don't depend on the i_gdquot to be accurate
593 * 100% all the time. It is just a hint, and this will
594 * succeed in general.
596 if (ip
->i_udquot
->q_gdquot
!= ip
->i_gdquot
)
597 xfs_qm_dqattach_hint(ip
, XFS_DQ_GROUP
);
599 if (ip
->i_udquot
->q_pdquot
!= ip
->i_pdquot
)
600 xfs_qm_dqattach_hint(ip
, XFS_DQ_PROJ
);
606 if (XFS_IS_UQUOTA_ON(mp
))
607 ASSERT(ip
->i_udquot
);
608 if (XFS_IS_GQUOTA_ON(mp
))
609 ASSERT(ip
->i_gdquot
);
610 if (XFS_IS_PQUOTA_ON(mp
))
611 ASSERT(ip
->i_pdquot
);
613 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
620 struct xfs_inode
*ip
,
625 if (!xfs_qm_need_dqattach(ip
))
628 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
629 error
= xfs_qm_dqattach_locked(ip
, flags
);
630 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
636 * Release dquots (and their references) if any.
637 * The inode should be locked EXCL except when this's called by
644 if (!(ip
->i_udquot
|| ip
->i_gdquot
|| ip
->i_pdquot
))
647 trace_xfs_dquot_dqdetach(ip
);
649 ASSERT(!xfs_is_quota_inode(&ip
->i_mount
->m_sb
, ip
->i_ino
));
651 xfs_qm_dqrele(ip
->i_udquot
);
655 xfs_qm_dqrele(ip
->i_gdquot
);
659 xfs_qm_dqrele(ip
->i_pdquot
);
664 struct xfs_qm_isolate
{
665 struct list_head buffers
;
666 struct list_head dispose
;
669 static enum lru_status
670 xfs_qm_dquot_isolate(
671 struct list_head
*item
,
672 spinlock_t
*lru_lock
,
675 struct xfs_dquot
*dqp
= container_of(item
,
676 struct xfs_dquot
, q_lru
);
677 struct xfs_qm_isolate
*isol
= arg
;
679 if (!xfs_dqlock_nowait(dqp
))
683 * This dquot has acquired a reference in the meantime remove it from
684 * the freelist and try again.
688 XFS_STATS_INC(xs_qm_dqwants
);
690 trace_xfs_dqreclaim_want(dqp
);
691 list_del_init(&dqp
->q_lru
);
692 XFS_STATS_DEC(xs_qm_dquot_unused
);
697 * If the dquot is dirty, flush it. If it's already being flushed, just
698 * skip it so there is time for the IO to complete before we try to
699 * reclaim it again on the next LRU pass.
701 if (!xfs_dqflock_nowait(dqp
)) {
706 if (XFS_DQ_IS_DIRTY(dqp
)) {
707 struct xfs_buf
*bp
= NULL
;
710 trace_xfs_dqreclaim_dirty(dqp
);
712 /* we have to drop the LRU lock to flush the dquot */
713 spin_unlock(lru_lock
);
715 error
= xfs_qm_dqflush(dqp
, &bp
);
717 xfs_warn(dqp
->q_mount
, "%s: dquot %p flush failed",
719 goto out_unlock_dirty
;
722 xfs_buf_delwri_queue(bp
, &isol
->buffers
);
724 goto out_unlock_dirty
;
729 * Prevent lookups now that we are past the point of no return.
731 dqp
->dq_flags
|= XFS_DQ_FREEING
;
734 ASSERT(dqp
->q_nrefs
== 0);
735 list_move_tail(&dqp
->q_lru
, &isol
->dispose
);
736 XFS_STATS_DEC(xs_qm_dquot_unused
);
737 trace_xfs_dqreclaim_done(dqp
);
738 XFS_STATS_INC(xs_qm_dqreclaims
);
742 trace_xfs_dqreclaim_busy(dqp
);
743 XFS_STATS_INC(xs_qm_dqreclaim_misses
);
747 trace_xfs_dqreclaim_busy(dqp
);
748 XFS_STATS_INC(xs_qm_dqreclaim_misses
);
756 struct shrinker
*shrink
,
757 struct shrink_control
*sc
)
759 struct xfs_quotainfo
*qi
= container_of(shrink
,
760 struct xfs_quotainfo
, qi_shrinker
);
761 struct xfs_qm_isolate isol
;
764 unsigned long nr_to_scan
= sc
->nr_to_scan
;
766 if ((sc
->gfp_mask
& (__GFP_FS
|__GFP_WAIT
)) != (__GFP_FS
|__GFP_WAIT
))
769 INIT_LIST_HEAD(&isol
.buffers
);
770 INIT_LIST_HEAD(&isol
.dispose
);
772 freed
= list_lru_walk_node(&qi
->qi_lru
, sc
->nid
, xfs_qm_dquot_isolate
, &isol
,
775 error
= xfs_buf_delwri_submit(&isol
.buffers
);
777 xfs_warn(NULL
, "%s: dquot reclaim failed", __func__
);
779 while (!list_empty(&isol
.dispose
)) {
780 struct xfs_dquot
*dqp
;
782 dqp
= list_first_entry(&isol
.dispose
, struct xfs_dquot
, q_lru
);
783 list_del_init(&dqp
->q_lru
);
784 xfs_qm_dqfree_one(dqp
);
792 struct shrinker
*shrink
,
793 struct shrink_control
*sc
)
795 struct xfs_quotainfo
*qi
= container_of(shrink
,
796 struct xfs_quotainfo
, qi_shrinker
);
798 return list_lru_count_node(&qi
->qi_lru
, sc
->nid
);
802 * This initializes all the quota information that's kept in the
806 xfs_qm_init_quotainfo(
809 xfs_quotainfo_t
*qinf
;
813 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
815 qinf
= mp
->m_quotainfo
= kmem_zalloc(sizeof(xfs_quotainfo_t
), KM_SLEEP
);
817 if ((error
= list_lru_init(&qinf
->qi_lru
))) {
819 mp
->m_quotainfo
= NULL
;
824 * See if quotainodes are setup, and if not, allocate them,
825 * and change the superblock accordingly.
827 if ((error
= xfs_qm_init_quotainos(mp
))) {
828 list_lru_destroy(&qinf
->qi_lru
);
830 mp
->m_quotainfo
= NULL
;
834 INIT_RADIX_TREE(&qinf
->qi_uquota_tree
, GFP_NOFS
);
835 INIT_RADIX_TREE(&qinf
->qi_gquota_tree
, GFP_NOFS
);
836 INIT_RADIX_TREE(&qinf
->qi_pquota_tree
, GFP_NOFS
);
837 mutex_init(&qinf
->qi_tree_lock
);
839 /* mutex used to serialize quotaoffs */
840 mutex_init(&qinf
->qi_quotaofflock
);
842 /* Precalc some constants */
843 qinf
->qi_dqchunklen
= XFS_FSB_TO_BB(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
844 qinf
->qi_dqperchunk
= xfs_calc_dquots_per_chunk(mp
,
845 qinf
->qi_dqchunklen
);
847 mp
->m_qflags
|= (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_CHKD
);
850 * We try to get the limits from the superuser's limits fields.
851 * This is quite hacky, but it is standard quota practice.
853 * We look at the USR dquot with id == 0 first, but if user quotas
854 * are not enabled we goto the GRP dquot with id == 0.
855 * We don't really care to keep separate default limits for user
856 * and group quotas, at least not at this point.
858 * Since we may not have done a quotacheck by this point, just read
859 * the dquot without attaching it to any hashtables or lists.
861 error
= xfs_qm_dqread(mp
, 0,
862 XFS_IS_UQUOTA_RUNNING(mp
) ? XFS_DQ_USER
:
863 (XFS_IS_GQUOTA_RUNNING(mp
) ? XFS_DQ_GROUP
:
865 XFS_QMOPT_DOWARN
, &dqp
);
867 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
870 * The warnings and timers set the grace period given to
871 * a user or group before he or she can not perform any
872 * more writing. If it is zero, a default is used.
874 qinf
->qi_btimelimit
= ddqp
->d_btimer
?
875 be32_to_cpu(ddqp
->d_btimer
) : XFS_QM_BTIMELIMIT
;
876 qinf
->qi_itimelimit
= ddqp
->d_itimer
?
877 be32_to_cpu(ddqp
->d_itimer
) : XFS_QM_ITIMELIMIT
;
878 qinf
->qi_rtbtimelimit
= ddqp
->d_rtbtimer
?
879 be32_to_cpu(ddqp
->d_rtbtimer
) : XFS_QM_RTBTIMELIMIT
;
880 qinf
->qi_bwarnlimit
= ddqp
->d_bwarns
?
881 be16_to_cpu(ddqp
->d_bwarns
) : XFS_QM_BWARNLIMIT
;
882 qinf
->qi_iwarnlimit
= ddqp
->d_iwarns
?
883 be16_to_cpu(ddqp
->d_iwarns
) : XFS_QM_IWARNLIMIT
;
884 qinf
->qi_rtbwarnlimit
= ddqp
->d_rtbwarns
?
885 be16_to_cpu(ddqp
->d_rtbwarns
) : XFS_QM_RTBWARNLIMIT
;
886 qinf
->qi_bhardlimit
= be64_to_cpu(ddqp
->d_blk_hardlimit
);
887 qinf
->qi_bsoftlimit
= be64_to_cpu(ddqp
->d_blk_softlimit
);
888 qinf
->qi_ihardlimit
= be64_to_cpu(ddqp
->d_ino_hardlimit
);
889 qinf
->qi_isoftlimit
= be64_to_cpu(ddqp
->d_ino_softlimit
);
890 qinf
->qi_rtbhardlimit
= be64_to_cpu(ddqp
->d_rtb_hardlimit
);
891 qinf
->qi_rtbsoftlimit
= be64_to_cpu(ddqp
->d_rtb_softlimit
);
893 xfs_qm_dqdestroy(dqp
);
895 qinf
->qi_btimelimit
= XFS_QM_BTIMELIMIT
;
896 qinf
->qi_itimelimit
= XFS_QM_ITIMELIMIT
;
897 qinf
->qi_rtbtimelimit
= XFS_QM_RTBTIMELIMIT
;
898 qinf
->qi_bwarnlimit
= XFS_QM_BWARNLIMIT
;
899 qinf
->qi_iwarnlimit
= XFS_QM_IWARNLIMIT
;
900 qinf
->qi_rtbwarnlimit
= XFS_QM_RTBWARNLIMIT
;
903 qinf
->qi_shrinker
.count_objects
= xfs_qm_shrink_count
;
904 qinf
->qi_shrinker
.scan_objects
= xfs_qm_shrink_scan
;
905 qinf
->qi_shrinker
.seeks
= DEFAULT_SEEKS
;
906 qinf
->qi_shrinker
.flags
= SHRINKER_NUMA_AWARE
;
907 register_shrinker(&qinf
->qi_shrinker
);
913 * Gets called when unmounting a filesystem or when all quotas get
915 * This purges the quota inodes, destroys locks and frees itself.
918 xfs_qm_destroy_quotainfo(
923 qi
= mp
->m_quotainfo
;
926 unregister_shrinker(&qi
->qi_shrinker
);
927 list_lru_destroy(&qi
->qi_lru
);
929 if (qi
->qi_uquotaip
) {
930 IRELE(qi
->qi_uquotaip
);
931 qi
->qi_uquotaip
= NULL
; /* paranoia */
933 if (qi
->qi_gquotaip
) {
934 IRELE(qi
->qi_gquotaip
);
935 qi
->qi_gquotaip
= NULL
;
937 if (qi
->qi_pquotaip
) {
938 IRELE(qi
->qi_pquotaip
);
939 qi
->qi_pquotaip
= NULL
;
941 mutex_destroy(&qi
->qi_quotaofflock
);
943 mp
->m_quotainfo
= NULL
;
947 * Create an inode and return with a reference already taken, but unlocked
948 * This is how we create quota inodes
963 * With superblock that doesn't have separate pquotino, we
964 * share an inode between gquota and pquota. If the on-disk
965 * superblock has GQUOTA and the filesystem is now mounted
966 * with PQUOTA, just use sb_gquotino for sb_pquotino and
969 if (!xfs_sb_version_has_pquotino(&mp
->m_sb
) &&
970 (flags
& (XFS_QMOPT_PQUOTA
|XFS_QMOPT_GQUOTA
))) {
971 xfs_ino_t ino
= NULLFSINO
;
973 if ((flags
& XFS_QMOPT_PQUOTA
) &&
974 (mp
->m_sb
.sb_gquotino
!= NULLFSINO
)) {
975 ino
= mp
->m_sb
.sb_gquotino
;
976 ASSERT(mp
->m_sb
.sb_pquotino
== NULLFSINO
);
977 } else if ((flags
& XFS_QMOPT_GQUOTA
) &&
978 (mp
->m_sb
.sb_pquotino
!= NULLFSINO
)) {
979 ino
= mp
->m_sb
.sb_pquotino
;
980 ASSERT(mp
->m_sb
.sb_gquotino
== NULLFSINO
);
982 if (ino
!= NULLFSINO
) {
983 error
= xfs_iget(mp
, NULL
, ino
, 0, 0, ip
);
986 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
987 mp
->m_sb
.sb_pquotino
= NULLFSINO
;
991 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_QINOCREATE
);
992 error
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_create
,
993 XFS_QM_QINOCREATE_SPACE_RES(mp
), 0);
995 xfs_trans_cancel(tp
, 0);
1000 error
= xfs_dir_ialloc(&tp
, NULL
, S_IFREG
, 1, 0, 0, 1, ip
,
1003 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
|
1010 * Make the changes in the superblock, and log those too.
1011 * sbfields arg may contain fields other than *QUOTINO;
1012 * VERSIONNUM for example.
1014 spin_lock(&mp
->m_sb_lock
);
1015 if (flags
& XFS_QMOPT_SBVERSION
) {
1016 ASSERT(!xfs_sb_version_hasquota(&mp
->m_sb
));
1017 ASSERT((sbfields
& (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1018 XFS_SB_GQUOTINO
| XFS_SB_PQUOTINO
| XFS_SB_QFLAGS
)) ==
1019 (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1020 XFS_SB_GQUOTINO
| XFS_SB_PQUOTINO
|
1023 xfs_sb_version_addquota(&mp
->m_sb
);
1024 mp
->m_sb
.sb_uquotino
= NULLFSINO
;
1025 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
1026 mp
->m_sb
.sb_pquotino
= NULLFSINO
;
1028 /* qflags will get updated fully _after_ quotacheck */
1029 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_ALL_QUOTA_ACCT
;
1031 if (flags
& XFS_QMOPT_UQUOTA
)
1032 mp
->m_sb
.sb_uquotino
= (*ip
)->i_ino
;
1033 else if (flags
& XFS_QMOPT_GQUOTA
)
1034 mp
->m_sb
.sb_gquotino
= (*ip
)->i_ino
;
1036 mp
->m_sb
.sb_pquotino
= (*ip
)->i_ino
;
1037 spin_unlock(&mp
->m_sb_lock
);
1038 xfs_mod_sb(tp
, sbfields
);
1040 if ((error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
))) {
1041 xfs_alert(mp
, "%s failed (error %d)!", __func__
, error
);
1049 xfs_qm_reset_dqcounts(
1055 struct xfs_dqblk
*dqb
;
1058 trace_xfs_reset_dqcounts(bp
, _RET_IP_
);
1061 * Reset all counters and timers. They'll be
1062 * started afresh by xfs_qm_quotacheck.
1065 j
= XFS_FSB_TO_B(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
1066 do_div(j
, sizeof(xfs_dqblk_t
));
1067 ASSERT(mp
->m_quotainfo
->qi_dqperchunk
== j
);
1070 for (j
= 0; j
< mp
->m_quotainfo
->qi_dqperchunk
; j
++) {
1071 struct xfs_disk_dquot
*ddq
;
1073 ddq
= (struct xfs_disk_dquot
*)&dqb
[j
];
1076 * Do a sanity check, and if needed, repair the dqblk. Don't
1077 * output any warnings because it's perfectly possible to
1078 * find uninitialised dquot blks. See comment in xfs_dqcheck.
1080 xfs_dqcheck(mp
, ddq
, id
+j
, type
, XFS_QMOPT_DQREPAIR
,
1084 ddq
->d_rtbcount
= 0;
1087 ddq
->d_rtbtimer
= 0;
1090 ddq
->d_rtbwarns
= 0;
1092 if (xfs_sb_version_hascrc(&mp
->m_sb
)) {
1093 xfs_update_cksum((char *)&dqb
[j
],
1094 sizeof(struct xfs_dqblk
),
1102 struct xfs_mount
*mp
,
1105 xfs_filblks_t blkcnt
,
1107 struct list_head
*buffer_list
)
1114 type
= flags
& XFS_QMOPT_UQUOTA
? XFS_DQ_USER
:
1115 (flags
& XFS_QMOPT_PQUOTA
? XFS_DQ_PROJ
: XFS_DQ_GROUP
);
1119 * Blkcnt arg can be a very big number, and might even be
1120 * larger than the log itself. So, we have to break it up into
1121 * manageable-sized transactions.
1122 * Note that we don't start a permanent transaction here; we might
1123 * not be able to get a log reservation for the whole thing up front,
1124 * and we don't really care to either, because we just discard
1125 * everything if we were to crash in the middle of this loop.
1128 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
1129 XFS_FSB_TO_DADDR(mp
, bno
),
1130 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
,
1131 &xfs_dquot_buf_ops
);
1134 * CRC and validation errors will return a EFSCORRUPTED here. If
1135 * this occurs, re-read without CRC validation so that we can
1136 * repair the damage via xfs_qm_reset_dqcounts(). This process
1137 * will leave a trace in the log indicating corruption has
1140 if (error
== EFSCORRUPTED
) {
1141 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
1142 XFS_FSB_TO_DADDR(mp
, bno
),
1143 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
,
1150 xfs_qm_reset_dqcounts(mp
, bp
, firstid
, type
);
1151 xfs_buf_delwri_queue(bp
, buffer_list
);
1154 /* goto the next block. */
1156 firstid
+= mp
->m_quotainfo
->qi_dqperchunk
;
1163 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
1164 * caller supplied function for every chunk of dquots that we find.
1168 struct xfs_mount
*mp
,
1169 struct xfs_inode
*qip
,
1171 struct list_head
*buffer_list
)
1173 struct xfs_bmbt_irec
*map
;
1174 int i
, nmaps
; /* number of map entries */
1175 int error
; /* return value */
1176 xfs_fileoff_t lblkno
;
1177 xfs_filblks_t maxlblkcnt
;
1179 xfs_fsblock_t rablkno
;
1180 xfs_filblks_t rablkcnt
;
1184 * This looks racy, but we can't keep an inode lock across a
1185 * trans_reserve. But, this gets called during quotacheck, and that
1186 * happens only at mount time which is single threaded.
1188 if (qip
->i_d
.di_nblocks
== 0)
1191 map
= kmem_alloc(XFS_DQITER_MAP_SIZE
* sizeof(*map
), KM_SLEEP
);
1194 maxlblkcnt
= XFS_B_TO_FSB(mp
, mp
->m_super
->s_maxbytes
);
1196 nmaps
= XFS_DQITER_MAP_SIZE
;
1198 * We aren't changing the inode itself. Just changing
1199 * some of its data. No new blocks are added here, and
1200 * the inode is never added to the transaction.
1202 xfs_ilock(qip
, XFS_ILOCK_SHARED
);
1203 error
= xfs_bmapi_read(qip
, lblkno
, maxlblkcnt
- lblkno
,
1205 xfs_iunlock(qip
, XFS_ILOCK_SHARED
);
1209 ASSERT(nmaps
<= XFS_DQITER_MAP_SIZE
);
1210 for (i
= 0; i
< nmaps
; i
++) {
1211 ASSERT(map
[i
].br_startblock
!= DELAYSTARTBLOCK
);
1212 ASSERT(map
[i
].br_blockcount
);
1215 lblkno
+= map
[i
].br_blockcount
;
1217 if (map
[i
].br_startblock
== HOLESTARTBLOCK
)
1220 firstid
= (xfs_dqid_t
) map
[i
].br_startoff
*
1221 mp
->m_quotainfo
->qi_dqperchunk
;
1223 * Do a read-ahead on the next extent.
1225 if ((i
+1 < nmaps
) &&
1226 (map
[i
+1].br_startblock
!= HOLESTARTBLOCK
)) {
1227 rablkcnt
= map
[i
+1].br_blockcount
;
1228 rablkno
= map
[i
+1].br_startblock
;
1229 while (rablkcnt
--) {
1230 xfs_buf_readahead(mp
->m_ddev_targp
,
1231 XFS_FSB_TO_DADDR(mp
, rablkno
),
1232 mp
->m_quotainfo
->qi_dqchunklen
,
1238 * Iterate thru all the blks in the extent and
1239 * reset the counters of all the dquots inside them.
1241 error
= xfs_qm_dqiter_bufs(mp
, firstid
,
1242 map
[i
].br_startblock
,
1243 map
[i
].br_blockcount
,
1244 flags
, buffer_list
);
1248 } while (nmaps
> 0);
1256 * Called by dqusage_adjust in doing a quotacheck.
1258 * Given the inode, and a dquot id this updates both the incore dqout as well
1259 * as the buffer copy. This is so that once the quotacheck is done, we can
1260 * just log all the buffers, as opposed to logging numerous updates to
1261 * individual dquots.
1264 xfs_qm_quotacheck_dqadjust(
1265 struct xfs_inode
*ip
,
1271 struct xfs_mount
*mp
= ip
->i_mount
;
1272 struct xfs_dquot
*dqp
;
1275 error
= xfs_qm_dqget(mp
, ip
, id
, type
,
1276 XFS_QMOPT_DQALLOC
| XFS_QMOPT_DOWARN
, &dqp
);
1279 * Shouldn't be able to turn off quotas here.
1281 ASSERT(error
!= ESRCH
);
1282 ASSERT(error
!= ENOENT
);
1286 trace_xfs_dqadjust(dqp
);
1289 * Adjust the inode count and the block count to reflect this inode's
1292 be64_add_cpu(&dqp
->q_core
.d_icount
, 1);
1293 dqp
->q_res_icount
++;
1295 be64_add_cpu(&dqp
->q_core
.d_bcount
, nblks
);
1296 dqp
->q_res_bcount
+= nblks
;
1299 be64_add_cpu(&dqp
->q_core
.d_rtbcount
, rtblks
);
1300 dqp
->q_res_rtbcount
+= rtblks
;
1304 * Set default limits, adjust timers (since we changed usages)
1306 * There are no timers for the default values set in the root dquot.
1308 if (dqp
->q_core
.d_id
) {
1309 xfs_qm_adjust_dqlimits(mp
, dqp
);
1310 xfs_qm_adjust_dqtimers(mp
, &dqp
->q_core
);
1313 dqp
->dq_flags
|= XFS_DQ_DIRTY
;
1321 xfs_qcnt_t
*O_rtblks
)
1323 xfs_filblks_t rtblks
; /* total rt blks */
1324 xfs_extnum_t idx
; /* extent record index */
1325 xfs_ifork_t
*ifp
; /* inode fork pointer */
1326 xfs_extnum_t nextents
; /* number of extent entries */
1329 ASSERT(XFS_IS_REALTIME_INODE(ip
));
1330 ifp
= XFS_IFORK_PTR(ip
, XFS_DATA_FORK
);
1331 if (!(ifp
->if_flags
& XFS_IFEXTENTS
)) {
1332 if ((error
= xfs_iread_extents(NULL
, ip
, XFS_DATA_FORK
)))
1336 nextents
= ifp
->if_bytes
/ (uint
)sizeof(xfs_bmbt_rec_t
);
1337 for (idx
= 0; idx
< nextents
; idx
++)
1338 rtblks
+= xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp
, idx
));
1339 *O_rtblks
= (xfs_qcnt_t
)rtblks
;
1344 * callback routine supplied to bulkstat(). Given an inumber, find its
1345 * dquots and update them to account for resources taken by that inode.
1349 xfs_qm_dqusage_adjust(
1350 xfs_mount_t
*mp
, /* mount point for filesystem */
1351 xfs_ino_t ino
, /* inode number to get data for */
1352 void __user
*buffer
, /* not used */
1353 int ubsize
, /* not used */
1354 int *ubused
, /* not used */
1355 int *res
) /* result code value */
1358 xfs_qcnt_t nblks
, rtblks
= 0;
1361 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1364 * rootino must have its resources accounted for, not so with the quota
1367 if (xfs_is_quota_inode(&mp
->m_sb
, ino
)) {
1368 *res
= BULKSTAT_RV_NOTHING
;
1369 return XFS_ERROR(EINVAL
);
1373 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1374 * interface expects the inode to be exclusively locked because that's
1375 * the case in all other instances. It's OK that we do this because
1376 * quotacheck is done only at mount time.
1378 error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_EXCL
, &ip
);
1380 *res
= BULKSTAT_RV_NOTHING
;
1384 ASSERT(ip
->i_delayed_blks
== 0);
1386 if (XFS_IS_REALTIME_INODE(ip
)) {
1388 * Walk thru the extent list and count the realtime blocks.
1390 error
= xfs_qm_get_rtblks(ip
, &rtblks
);
1395 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
- rtblks
;
1398 * Add the (disk blocks and inode) resources occupied by this
1399 * inode to its dquots. We do this adjustment in the incore dquot,
1400 * and also copy the changes to its buffer.
1401 * We don't care about putting these changes in a transaction
1402 * envelope because if we crash in the middle of a 'quotacheck'
1403 * we have to start from the beginning anyway.
1404 * Once we're done, we'll log all the dquot bufs.
1406 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1407 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1409 if (XFS_IS_UQUOTA_ON(mp
)) {
1410 error
= xfs_qm_quotacheck_dqadjust(ip
, ip
->i_d
.di_uid
,
1411 XFS_DQ_USER
, nblks
, rtblks
);
1416 if (XFS_IS_GQUOTA_ON(mp
)) {
1417 error
= xfs_qm_quotacheck_dqadjust(ip
, ip
->i_d
.di_gid
,
1418 XFS_DQ_GROUP
, nblks
, rtblks
);
1423 if (XFS_IS_PQUOTA_ON(mp
)) {
1424 error
= xfs_qm_quotacheck_dqadjust(ip
, xfs_get_projid(ip
),
1425 XFS_DQ_PROJ
, nblks
, rtblks
);
1430 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1432 *res
= BULKSTAT_RV_DIDONE
;
1436 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1438 *res
= BULKSTAT_RV_GIVEUP
;
1444 struct xfs_dquot
*dqp
,
1447 struct list_head
*buffer_list
= data
;
1448 struct xfs_buf
*bp
= NULL
;
1452 if (dqp
->dq_flags
& XFS_DQ_FREEING
)
1454 if (!XFS_DQ_IS_DIRTY(dqp
))
1458 error
= xfs_qm_dqflush(dqp
, &bp
);
1462 xfs_buf_delwri_queue(bp
, buffer_list
);
1470 * Walk thru all the filesystem inodes and construct a consistent view
1471 * of the disk quota world. If the quotacheck fails, disable quotas.
1477 int done
, count
, error
, error2
;
1481 LIST_HEAD (buffer_list
);
1482 struct xfs_inode
*uip
= mp
->m_quotainfo
->qi_uquotaip
;
1483 struct xfs_inode
*gip
= mp
->m_quotainfo
->qi_gquotaip
;
1484 struct xfs_inode
*pip
= mp
->m_quotainfo
->qi_pquotaip
;
1491 ASSERT(uip
|| gip
|| pip
);
1492 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1494 xfs_notice(mp
, "Quotacheck needed: Please wait.");
1497 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1498 * their counters to zero. We need a clean slate.
1499 * We don't log our changes till later.
1502 error
= xfs_qm_dqiterate(mp
, uip
, XFS_QMOPT_UQUOTA
,
1506 flags
|= XFS_UQUOTA_CHKD
;
1510 error
= xfs_qm_dqiterate(mp
, gip
, XFS_QMOPT_GQUOTA
,
1514 flags
|= XFS_GQUOTA_CHKD
;
1518 error
= xfs_qm_dqiterate(mp
, pip
, XFS_QMOPT_PQUOTA
,
1522 flags
|= XFS_PQUOTA_CHKD
;
1527 * Iterate thru all the inodes in the file system,
1528 * adjusting the corresponding dquot counters in core.
1530 error
= xfs_bulkstat(mp
, &lastino
, &count
,
1531 xfs_qm_dqusage_adjust
,
1532 structsz
, NULL
, &done
);
1539 * We've made all the changes that we need to make incore. Flush them
1540 * down to disk buffers if everything was updated successfully.
1542 if (XFS_IS_UQUOTA_ON(mp
)) {
1543 error
= xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_flush_one
,
1546 if (XFS_IS_GQUOTA_ON(mp
)) {
1547 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_flush_one
,
1552 if (XFS_IS_PQUOTA_ON(mp
)) {
1553 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_flush_one
,
1559 error2
= xfs_buf_delwri_submit(&buffer_list
);
1564 * We can get this error if we couldn't do a dquot allocation inside
1565 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1566 * dirty dquots that might be cached, we just want to get rid of them
1567 * and turn quotaoff. The dquots won't be attached to any of the inodes
1568 * at this point (because we intentionally didn't in dqget_noattach).
1571 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
1576 * If one type of quotas is off, then it will lose its
1577 * quotachecked status, since we won't be doing accounting for
1578 * that type anymore.
1580 mp
->m_qflags
&= ~XFS_ALL_QUOTA_CHKD
;
1581 mp
->m_qflags
|= flags
;
1584 while (!list_empty(&buffer_list
)) {
1585 struct xfs_buf
*bp
=
1586 list_first_entry(&buffer_list
, struct xfs_buf
, b_list
);
1587 list_del_init(&bp
->b_list
);
1593 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1596 * We must turn off quotas.
1598 ASSERT(mp
->m_quotainfo
!= NULL
);
1599 xfs_qm_destroy_quotainfo(mp
);
1600 if (xfs_mount_reset_sbqflags(mp
)) {
1602 "Quotacheck: Failed to reset quota flags.");
1605 xfs_notice(mp
, "Quotacheck: Done.");
1610 * This is called after the superblock has been read in and we're ready to
1611 * iget the quota inodes.
1614 xfs_qm_init_quotainos(
1617 struct xfs_inode
*uip
= NULL
;
1618 struct xfs_inode
*gip
= NULL
;
1619 struct xfs_inode
*pip
= NULL
;
1621 __int64_t sbflags
= 0;
1624 ASSERT(mp
->m_quotainfo
);
1627 * Get the uquota and gquota inodes
1629 if (xfs_sb_version_hasquota(&mp
->m_sb
)) {
1630 if (XFS_IS_UQUOTA_ON(mp
) &&
1631 mp
->m_sb
.sb_uquotino
!= NULLFSINO
) {
1632 ASSERT(mp
->m_sb
.sb_uquotino
> 0);
1633 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_uquotino
,
1636 return XFS_ERROR(error
);
1638 if (XFS_IS_GQUOTA_ON(mp
) &&
1639 mp
->m_sb
.sb_gquotino
!= NULLFSINO
) {
1640 ASSERT(mp
->m_sb
.sb_gquotino
> 0);
1641 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_gquotino
,
1646 if (XFS_IS_PQUOTA_ON(mp
) &&
1647 mp
->m_sb
.sb_pquotino
!= NULLFSINO
) {
1648 ASSERT(mp
->m_sb
.sb_pquotino
> 0);
1649 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_pquotino
,
1655 flags
|= XFS_QMOPT_SBVERSION
;
1656 sbflags
|= (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1657 XFS_SB_GQUOTINO
| XFS_SB_PQUOTINO
|
1662 * Create the three inodes, if they don't exist already. The changes
1663 * made above will get added to a transaction and logged in one of
1664 * the qino_alloc calls below. If the device is readonly,
1665 * temporarily switch to read-write to do this.
1667 if (XFS_IS_UQUOTA_ON(mp
) && uip
== NULL
) {
1668 error
= xfs_qm_qino_alloc(mp
, &uip
,
1669 sbflags
| XFS_SB_UQUOTINO
,
1670 flags
| XFS_QMOPT_UQUOTA
);
1674 flags
&= ~XFS_QMOPT_SBVERSION
;
1676 if (XFS_IS_GQUOTA_ON(mp
) && gip
== NULL
) {
1677 error
= xfs_qm_qino_alloc(mp
, &gip
,
1678 sbflags
| XFS_SB_GQUOTINO
,
1679 flags
| XFS_QMOPT_GQUOTA
);
1683 flags
&= ~XFS_QMOPT_SBVERSION
;
1685 if (XFS_IS_PQUOTA_ON(mp
) && pip
== NULL
) {
1686 error
= xfs_qm_qino_alloc(mp
, &pip
,
1687 sbflags
| XFS_SB_PQUOTINO
,
1688 flags
| XFS_QMOPT_PQUOTA
);
1693 mp
->m_quotainfo
->qi_uquotaip
= uip
;
1694 mp
->m_quotainfo
->qi_gquotaip
= gip
;
1695 mp
->m_quotainfo
->qi_pquotaip
= pip
;
1706 return XFS_ERROR(error
);
1711 struct xfs_dquot
*dqp
)
1713 struct xfs_mount
*mp
= dqp
->q_mount
;
1714 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
1716 mutex_lock(&qi
->qi_tree_lock
);
1717 radix_tree_delete(xfs_dquot_tree(qi
, dqp
->q_core
.d_flags
),
1718 be32_to_cpu(dqp
->q_core
.d_id
));
1721 mutex_unlock(&qi
->qi_tree_lock
);
1723 xfs_qm_dqdestroy(dqp
);
1727 * Start a transaction and write the incore superblock changes to
1728 * disk. flags parameter indicates which fields have changed.
1731 xfs_qm_write_sb_changes(
1738 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_SBCHANGE
);
1739 error
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_qm_sbchange
, 0, 0);
1741 xfs_trans_cancel(tp
, 0);
1745 xfs_mod_sb(tp
, flags
);
1746 error
= xfs_trans_commit(tp
, 0);
1752 /* --------------- utility functions for vnodeops ---------------- */
1756 * Given an inode, a uid, gid and prid make sure that we have
1757 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1758 * quotas by creating this file.
1759 * This also attaches dquot(s) to the given inode after locking it,
1760 * and returns the dquots corresponding to the uid and/or gid.
1762 * in : inode (unlocked)
1763 * out : udquot, gdquot with references taken and unlocked
1767 struct xfs_inode
*ip
,
1772 struct xfs_dquot
**O_udqpp
,
1773 struct xfs_dquot
**O_gdqpp
,
1774 struct xfs_dquot
**O_pdqpp
)
1776 struct xfs_mount
*mp
= ip
->i_mount
;
1777 struct xfs_dquot
*uq
= NULL
;
1778 struct xfs_dquot
*gq
= NULL
;
1779 struct xfs_dquot
*pq
= NULL
;
1783 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1786 lockflags
= XFS_ILOCK_EXCL
;
1787 xfs_ilock(ip
, lockflags
);
1789 if ((flags
& XFS_QMOPT_INHERIT
) && XFS_INHERIT_GID(ip
))
1790 gid
= ip
->i_d
.di_gid
;
1793 * Attach the dquot(s) to this inode, doing a dquot allocation
1794 * if necessary. The dquot(s) will not be locked.
1796 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
1797 error
= xfs_qm_dqattach_locked(ip
, XFS_QMOPT_DQALLOC
);
1799 xfs_iunlock(ip
, lockflags
);
1804 if ((flags
& XFS_QMOPT_UQUOTA
) && XFS_IS_UQUOTA_ON(mp
)) {
1805 if (ip
->i_d
.di_uid
!= uid
) {
1807 * What we need is the dquot that has this uid, and
1808 * if we send the inode to dqget, the uid of the inode
1809 * takes priority over what's sent in the uid argument.
1810 * We must unlock inode here before calling dqget if
1811 * we're not sending the inode, because otherwise
1812 * we'll deadlock by doing trans_reserve while
1815 xfs_iunlock(ip
, lockflags
);
1816 error
= xfs_qm_dqget(mp
, NULL
, uid
,
1822 ASSERT(error
!= ENOENT
);
1826 * Get the ilock in the right order.
1829 lockflags
= XFS_ILOCK_SHARED
;
1830 xfs_ilock(ip
, lockflags
);
1833 * Take an extra reference, because we'll return
1836 ASSERT(ip
->i_udquot
);
1837 uq
= xfs_qm_dqhold(ip
->i_udquot
);
1840 if ((flags
& XFS_QMOPT_GQUOTA
) && XFS_IS_GQUOTA_ON(mp
)) {
1841 if (ip
->i_d
.di_gid
!= gid
) {
1842 xfs_iunlock(ip
, lockflags
);
1843 error
= xfs_qm_dqget(mp
, NULL
, gid
,
1849 ASSERT(error
!= ENOENT
);
1853 lockflags
= XFS_ILOCK_SHARED
;
1854 xfs_ilock(ip
, lockflags
);
1856 ASSERT(ip
->i_gdquot
);
1857 gq
= xfs_qm_dqhold(ip
->i_gdquot
);
1860 if ((flags
& XFS_QMOPT_PQUOTA
) && XFS_IS_PQUOTA_ON(mp
)) {
1861 if (xfs_get_projid(ip
) != prid
) {
1862 xfs_iunlock(ip
, lockflags
);
1863 error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)prid
,
1869 ASSERT(error
!= ENOENT
);
1873 lockflags
= XFS_ILOCK_SHARED
;
1874 xfs_ilock(ip
, lockflags
);
1876 ASSERT(ip
->i_pdquot
);
1877 pq
= xfs_qm_dqhold(ip
->i_pdquot
);
1881 trace_xfs_dquot_dqalloc(ip
);
1883 xfs_iunlock(ip
, lockflags
);
1907 * Actually transfer ownership, and do dquot modifications.
1908 * These were already reserved.
1914 xfs_dquot_t
**IO_olddq
,
1917 xfs_dquot_t
*prevdq
;
1918 uint bfield
= XFS_IS_REALTIME_INODE(ip
) ?
1919 XFS_TRANS_DQ_RTBCOUNT
: XFS_TRANS_DQ_BCOUNT
;
1922 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1923 ASSERT(XFS_IS_QUOTA_RUNNING(ip
->i_mount
));
1928 ASSERT(prevdq
!= newdq
);
1930 xfs_trans_mod_dquot(tp
, prevdq
, bfield
, -(ip
->i_d
.di_nblocks
));
1931 xfs_trans_mod_dquot(tp
, prevdq
, XFS_TRANS_DQ_ICOUNT
, -1);
1933 /* the sparkling new dquot */
1934 xfs_trans_mod_dquot(tp
, newdq
, bfield
, ip
->i_d
.di_nblocks
);
1935 xfs_trans_mod_dquot(tp
, newdq
, XFS_TRANS_DQ_ICOUNT
, 1);
1938 * Take an extra reference, because the inode is going to keep
1939 * this dquot pointer even after the trans_commit.
1941 *IO_olddq
= xfs_qm_dqhold(newdq
);
1947 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1950 xfs_qm_vop_chown_reserve(
1951 struct xfs_trans
*tp
,
1952 struct xfs_inode
*ip
,
1953 struct xfs_dquot
*udqp
,
1954 struct xfs_dquot
*gdqp
,
1955 struct xfs_dquot
*pdqp
,
1958 struct xfs_mount
*mp
= ip
->i_mount
;
1959 uint delblks
, blkflags
, prjflags
= 0;
1960 struct xfs_dquot
*udq_unres
= NULL
;
1961 struct xfs_dquot
*gdq_unres
= NULL
;
1962 struct xfs_dquot
*pdq_unres
= NULL
;
1963 struct xfs_dquot
*udq_delblks
= NULL
;
1964 struct xfs_dquot
*gdq_delblks
= NULL
;
1965 struct xfs_dquot
*pdq_delblks
= NULL
;
1969 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
|XFS_ILOCK_SHARED
));
1970 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1972 delblks
= ip
->i_delayed_blks
;
1973 blkflags
= XFS_IS_REALTIME_INODE(ip
) ?
1974 XFS_QMOPT_RES_RTBLKS
: XFS_QMOPT_RES_REGBLKS
;
1976 if (XFS_IS_UQUOTA_ON(mp
) && udqp
&&
1977 ip
->i_d
.di_uid
!= be32_to_cpu(udqp
->q_core
.d_id
)) {
1980 * If there are delayed allocation blocks, then we have to
1981 * unreserve those from the old dquot, and add them to the
1985 ASSERT(ip
->i_udquot
);
1986 udq_unres
= ip
->i_udquot
;
1989 if (XFS_IS_GQUOTA_ON(ip
->i_mount
) && gdqp
&&
1990 ip
->i_d
.di_gid
!= be32_to_cpu(gdqp
->q_core
.d_id
)) {
1993 ASSERT(ip
->i_gdquot
);
1994 gdq_unres
= ip
->i_gdquot
;
1998 if (XFS_IS_PQUOTA_ON(ip
->i_mount
) && pdqp
&&
1999 xfs_get_projid(ip
) != be32_to_cpu(pdqp
->q_core
.d_id
)) {
2000 prjflags
= XFS_QMOPT_ENOSPC
;
2003 ASSERT(ip
->i_pdquot
);
2004 pdq_unres
= ip
->i_pdquot
;
2008 error
= xfs_trans_reserve_quota_bydquots(tp
, ip
->i_mount
,
2009 udq_delblks
, gdq_delblks
, pdq_delblks
,
2010 ip
->i_d
.di_nblocks
, 1,
2011 flags
| blkflags
| prjflags
);
2016 * Do the delayed blks reservations/unreservations now. Since, these
2017 * are done without the help of a transaction, if a reservation fails
2018 * its previous reservations won't be automatically undone by trans
2019 * code. So, we have to do it manually here.
2023 * Do the reservations first. Unreservation can't fail.
2025 ASSERT(udq_delblks
|| gdq_delblks
|| pdq_delblks
);
2026 ASSERT(udq_unres
|| gdq_unres
|| pdq_unres
);
2027 error
= xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2028 udq_delblks
, gdq_delblks
, pdq_delblks
,
2029 (xfs_qcnt_t
)delblks
, 0,
2030 flags
| blkflags
| prjflags
);
2033 xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2034 udq_unres
, gdq_unres
, pdq_unres
,
2035 -((xfs_qcnt_t
)delblks
), 0, blkflags
);
2042 xfs_qm_vop_rename_dqattach(
2043 struct xfs_inode
**i_tab
)
2045 struct xfs_mount
*mp
= i_tab
[0]->i_mount
;
2048 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2051 for (i
= 0; (i
< 4 && i_tab
[i
]); i
++) {
2052 struct xfs_inode
*ip
= i_tab
[i
];
2056 * Watch out for duplicate entries in the table.
2058 if (i
== 0 || ip
!= i_tab
[i
-1]) {
2059 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
2060 error
= xfs_qm_dqattach(ip
, 0);
2070 xfs_qm_vop_create_dqattach(
2071 struct xfs_trans
*tp
,
2072 struct xfs_inode
*ip
,
2073 struct xfs_dquot
*udqp
,
2074 struct xfs_dquot
*gdqp
,
2075 struct xfs_dquot
*pdqp
)
2077 struct xfs_mount
*mp
= tp
->t_mountp
;
2079 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2082 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
2083 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
2086 ASSERT(ip
->i_udquot
== NULL
);
2087 ASSERT(XFS_IS_UQUOTA_ON(mp
));
2088 ASSERT(ip
->i_d
.di_uid
== be32_to_cpu(udqp
->q_core
.d_id
));
2090 ip
->i_udquot
= xfs_qm_dqhold(udqp
);
2091 xfs_trans_mod_dquot(tp
, udqp
, XFS_TRANS_DQ_ICOUNT
, 1);
2094 ASSERT(ip
->i_gdquot
== NULL
);
2095 ASSERT(XFS_IS_GQUOTA_ON(mp
));
2096 ASSERT(ip
->i_d
.di_gid
== be32_to_cpu(gdqp
->q_core
.d_id
));
2097 ip
->i_gdquot
= xfs_qm_dqhold(gdqp
);
2098 xfs_trans_mod_dquot(tp
, gdqp
, XFS_TRANS_DQ_ICOUNT
, 1);
2101 ASSERT(ip
->i_pdquot
== NULL
);
2102 ASSERT(XFS_IS_PQUOTA_ON(mp
));
2103 ASSERT(xfs_get_projid(ip
) == be32_to_cpu(pdqp
->q_core
.d_id
));
2105 ip
->i_pdquot
= xfs_qm_dqhold(pdqp
);
2106 xfs_trans_mod_dquot(tp
, pdqp
, XFS_TRANS_DQ_ICOUNT
, 1);