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_format.h"
21 #include "xfs_shared.h"
24 #include "xfs_trans.h"
27 #include "xfs_alloc.h"
28 #include "xfs_quota.h"
29 #include "xfs_mount.h"
30 #include "xfs_bmap_btree.h"
31 #include "xfs_ialloc_btree.h"
32 #include "xfs_dinode.h"
33 #include "xfs_inode.h"
34 #include "xfs_ialloc.h"
35 #include "xfs_itable.h"
36 #include "xfs_rtalloc.h"
37 #include "xfs_error.h"
40 #include "xfs_buf_item.h"
41 #include "xfs_trans_space.h"
43 #include "xfs_trace.h"
44 #include "xfs_icache.h"
45 #include "xfs_cksum.h"
48 * The global quota manager. There is only one of these for the entire
49 * system, _not_ one per file system. XQM keeps track of the overall
50 * quota functionality, including maintaining the freelist and hash
53 STATIC
int xfs_qm_init_quotainos(xfs_mount_t
*);
54 STATIC
int xfs_qm_init_quotainfo(xfs_mount_t
*);
57 STATIC
void xfs_qm_dqfree_one(struct xfs_dquot
*dqp
);
59 * We use the batch lookup interface to iterate over the dquots as it
60 * currently is the only interface into the radix tree code that allows
61 * fuzzy lookups instead of exact matches. Holding the lock over multiple
62 * operations is fine as all callers are used either during mount/umount
65 #define XFS_DQ_LOOKUP_BATCH 32
71 int (*execute
)(struct xfs_dquot
*dqp
, void *data
),
74 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
75 struct radix_tree_root
*tree
= xfs_dquot_tree(qi
, type
);
87 struct xfs_dquot
*batch
[XFS_DQ_LOOKUP_BATCH
];
91 mutex_lock(&qi
->qi_tree_lock
);
92 nr_found
= radix_tree_gang_lookup(tree
, (void **)batch
,
93 next_index
, XFS_DQ_LOOKUP_BATCH
);
95 mutex_unlock(&qi
->qi_tree_lock
);
99 for (i
= 0; i
< nr_found
; i
++) {
100 struct xfs_dquot
*dqp
= batch
[i
];
102 next_index
= be32_to_cpu(dqp
->q_core
.d_id
) + 1;
104 error
= execute(batch
[i
], data
);
105 if (error
== EAGAIN
) {
109 if (error
&& last_error
!= EFSCORRUPTED
)
113 mutex_unlock(&qi
->qi_tree_lock
);
115 /* bail out if the filesystem is corrupted. */
116 if (last_error
== EFSCORRUPTED
) {
132 * Purge a dquot from all tracking data structures and free it.
136 struct xfs_dquot
*dqp
,
139 struct xfs_mount
*mp
= dqp
->q_mount
;
140 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
141 struct xfs_dquot
*gdqp
= NULL
;
142 struct xfs_dquot
*pdqp
= NULL
;
145 if ((dqp
->dq_flags
& XFS_DQ_FREEING
) || dqp
->q_nrefs
!= 0) {
151 * If this quota has a hint attached, prepare for releasing it now.
153 gdqp
= dqp
->q_gdquot
;
156 dqp
->q_gdquot
= NULL
;
159 pdqp
= dqp
->q_pdquot
;
162 dqp
->q_pdquot
= NULL
;
165 dqp
->dq_flags
|= XFS_DQ_FREEING
;
170 * If we are turning this type of quotas off, we don't care
171 * about the dirty metadata sitting in this dquot. OTOH, if
172 * we're unmounting, we do care, so we flush it and wait.
174 if (XFS_DQ_IS_DIRTY(dqp
)) {
175 struct xfs_buf
*bp
= NULL
;
179 * We don't care about getting disk errors here. We need
180 * to purge this dquot anyway, so we go ahead regardless.
182 error
= xfs_qm_dqflush(dqp
, &bp
);
184 xfs_warn(mp
, "%s: dquot %p flush failed",
187 error
= xfs_bwrite(bp
);
193 ASSERT(atomic_read(&dqp
->q_pincount
) == 0);
194 ASSERT(XFS_FORCED_SHUTDOWN(mp
) ||
195 !(dqp
->q_logitem
.qli_item
.li_flags
& XFS_LI_IN_AIL
));
200 radix_tree_delete(xfs_dquot_tree(qi
, dqp
->q_core
.d_flags
),
201 be32_to_cpu(dqp
->q_core
.d_id
));
205 * We move dquots to the freelist as soon as their reference count
206 * hits zero, so it really should be on the freelist here.
208 ASSERT(!list_empty(&dqp
->q_lru
));
209 list_lru_del(&qi
->qi_lru
, &dqp
->q_lru
);
210 XFS_STATS_DEC(xs_qm_dquot_unused
);
212 xfs_qm_dqdestroy(dqp
);
222 * Purge the dquot cache.
226 struct xfs_mount
*mp
,
229 if (flags
& XFS_QMOPT_UQUOTA
)
230 xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_dqpurge
, NULL
);
231 if (flags
& XFS_QMOPT_GQUOTA
)
232 xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_dqpurge
, NULL
);
233 if (flags
& XFS_QMOPT_PQUOTA
)
234 xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_dqpurge
, NULL
);
238 * Just destroy the quotainfo structure.
242 struct xfs_mount
*mp
)
244 if (mp
->m_quotainfo
) {
245 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
246 xfs_qm_destroy_quotainfo(mp
);
252 * This is called from xfs_mountfs to start quotas and initialize all
253 * necessary data structures like quotainfo. This is also responsible for
254 * running a quotacheck as necessary. We are guaranteed that the superblock
255 * is consistently read in at this point.
257 * If we fail here, the mount will continue with quota turned off. We don't
258 * need to inidicate success or failure at all.
268 * If quotas on realtime volumes is not supported, we disable
269 * quotas immediately.
271 if (mp
->m_sb
.sb_rextents
) {
272 xfs_notice(mp
, "Cannot turn on quotas for realtime filesystem");
277 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
280 * Allocate the quotainfo structure inside the mount struct, and
281 * create quotainode(s), and change/rev superblock if necessary.
283 error
= xfs_qm_init_quotainfo(mp
);
286 * We must turn off quotas.
288 ASSERT(mp
->m_quotainfo
== NULL
);
293 * If any of the quotas are not consistent, do a quotacheck.
295 if (XFS_QM_NEED_QUOTACHECK(mp
)) {
296 error
= xfs_qm_quotacheck(mp
);
298 /* Quotacheck failed and disabled quotas. */
303 * If one type of quotas is off, then it will lose its
304 * quotachecked status, since we won't be doing accounting for
307 if (!XFS_IS_UQUOTA_ON(mp
))
308 mp
->m_qflags
&= ~XFS_UQUOTA_CHKD
;
309 if (!XFS_IS_GQUOTA_ON(mp
))
310 mp
->m_qflags
&= ~XFS_GQUOTA_CHKD
;
311 if (!XFS_IS_PQUOTA_ON(mp
))
312 mp
->m_qflags
&= ~XFS_PQUOTA_CHKD
;
316 * We actually don't have to acquire the m_sb_lock at all.
317 * This can only be called from mount, and that's single threaded. XXX
319 spin_lock(&mp
->m_sb_lock
);
320 sbf
= mp
->m_sb
.sb_qflags
;
321 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
;
322 spin_unlock(&mp
->m_sb_lock
);
324 if (sbf
!= (mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
)) {
325 if (xfs_qm_write_sb_changes(mp
, XFS_SB_QFLAGS
)) {
327 * We could only have been turning quotas off.
328 * We aren't in very good shape actually because
329 * the incore structures are convinced that quotas are
330 * off, but the on disk superblock doesn't know that !
332 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp
)));
333 xfs_alert(mp
, "%s: Superblock update failed!",
339 xfs_warn(mp
, "Failed to initialize disk quotas.");
345 * Called from the vfsops layer.
348 xfs_qm_unmount_quotas(
352 * Release the dquots that root inode, et al might be holding,
353 * before we flush quotas and blow away the quotainfo structure.
355 ASSERT(mp
->m_rootip
);
356 xfs_qm_dqdetach(mp
->m_rootip
);
358 xfs_qm_dqdetach(mp
->m_rbmip
);
360 xfs_qm_dqdetach(mp
->m_rsumip
);
363 * Release the quota inodes.
365 if (mp
->m_quotainfo
) {
366 if (mp
->m_quotainfo
->qi_uquotaip
) {
367 IRELE(mp
->m_quotainfo
->qi_uquotaip
);
368 mp
->m_quotainfo
->qi_uquotaip
= NULL
;
370 if (mp
->m_quotainfo
->qi_gquotaip
) {
371 IRELE(mp
->m_quotainfo
->qi_gquotaip
);
372 mp
->m_quotainfo
->qi_gquotaip
= NULL
;
374 if (mp
->m_quotainfo
->qi_pquotaip
) {
375 IRELE(mp
->m_quotainfo
->qi_pquotaip
);
376 mp
->m_quotainfo
->qi_pquotaip
= NULL
;
387 xfs_dquot_t
*udqhint
, /* hint */
388 xfs_dquot_t
**IO_idqpp
)
393 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
397 * See if we already have it in the inode itself. IO_idqpp is
398 * &i_udquot or &i_gdquot. This made the code look weird, but
399 * made the logic a lot simpler.
403 trace_xfs_dqattach_found(dqp
);
408 * udqhint is the i_udquot field in inode, and is non-NULL only
409 * when the type arg is group/project. Its purpose is to save a
410 * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside
414 ASSERT(type
== XFS_DQ_GROUP
|| type
== XFS_DQ_PROJ
);
418 * No need to take dqlock to look at the id.
420 * The ID can't change until it gets reclaimed, and it won't
421 * be reclaimed as long as we have a ref from inode and we
424 if (type
== XFS_DQ_GROUP
)
425 dqp
= udqhint
->q_gdquot
;
427 dqp
= udqhint
->q_pdquot
;
428 if (dqp
&& be32_to_cpu(dqp
->q_core
.d_id
) == id
) {
429 ASSERT(*IO_idqpp
== NULL
);
431 *IO_idqpp
= xfs_qm_dqhold(dqp
);
432 xfs_dqunlock(udqhint
);
437 * We can't hold a dquot lock when we call the dqget code.
438 * We'll deadlock in no time, because of (not conforming to)
439 * lock ordering - the inodelock comes before any dquot lock,
440 * and we may drop and reacquire the ilock in xfs_qm_dqget().
442 xfs_dqunlock(udqhint
);
446 * Find the dquot from somewhere. This bumps the
447 * reference count of dquot and returns it locked.
448 * This can return ENOENT if dquot didn't exist on
449 * disk and we didn't ask it to allocate;
450 * ESRCH if quotas got turned off suddenly.
452 error
= xfs_qm_dqget(ip
->i_mount
, ip
, id
, type
,
453 doalloc
| XFS_QMOPT_DOWARN
, &dqp
);
457 trace_xfs_dqattach_get(dqp
);
460 * dqget may have dropped and re-acquired the ilock, but it guarantees
461 * that the dquot returned is the one that should go in the inode.
470 * Given a udquot and group/project type, attach the group/project
471 * dquot pointer to the udquot as a hint for future lookups.
474 xfs_qm_dqattach_hint(
475 struct xfs_inode
*ip
,
478 struct xfs_dquot
**dqhintp
;
479 struct xfs_dquot
*dqp
;
480 struct xfs_dquot
*udq
= ip
->i_udquot
;
482 ASSERT(type
== XFS_DQ_GROUP
|| type
== XFS_DQ_PROJ
);
486 if (type
== XFS_DQ_GROUP
) {
488 dqhintp
= &udq
->q_gdquot
;
491 dqhintp
= &udq
->q_pdquot
;
495 struct xfs_dquot
*tmp
;
505 *dqhintp
= xfs_qm_dqhold(dqp
);
511 xfs_qm_need_dqattach(
512 struct xfs_inode
*ip
)
514 struct xfs_mount
*mp
= ip
->i_mount
;
516 if (!XFS_IS_QUOTA_RUNNING(mp
))
518 if (!XFS_IS_QUOTA_ON(mp
))
520 if (!XFS_NOT_DQATTACHED(mp
, ip
))
522 if (xfs_is_quota_inode(&mp
->m_sb
, ip
->i_ino
))
528 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
530 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
531 * Inode may get unlocked and relocked in here, and the caller must deal with
535 xfs_qm_dqattach_locked(
539 xfs_mount_t
*mp
= ip
->i_mount
;
543 if (!xfs_qm_need_dqattach(ip
))
546 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
548 if (XFS_IS_UQUOTA_ON(mp
)) {
549 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
550 flags
& XFS_QMOPT_DQALLOC
,
551 NULL
, &ip
->i_udquot
);
557 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
558 if (XFS_IS_GQUOTA_ON(mp
)) {
559 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
560 flags
& XFS_QMOPT_DQALLOC
,
561 ip
->i_udquot
, &ip
->i_gdquot
);
563 * Don't worry about the udquot that we may have
564 * attached above. It'll get detached, if not already.
571 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
572 if (XFS_IS_PQUOTA_ON(mp
)) {
573 error
= xfs_qm_dqattach_one(ip
, xfs_get_projid(ip
), XFS_DQ_PROJ
,
574 flags
& XFS_QMOPT_DQALLOC
,
575 ip
->i_udquot
, &ip
->i_pdquot
);
577 * Don't worry about the udquot that we may have
578 * attached above. It'll get detached, if not already.
586 * Attach this group/project quota to the user quota as a hint.
587 * This WON'T, in general, result in a thrash.
589 if (nquotas
> 1 && ip
->i_udquot
) {
590 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
591 ASSERT(ip
->i_gdquot
|| !XFS_IS_GQUOTA_ON(mp
));
592 ASSERT(ip
->i_pdquot
|| !XFS_IS_PQUOTA_ON(mp
));
595 * We do not have i_udquot locked at this point, but this check
596 * is OK since we don't depend on the i_gdquot to be accurate
597 * 100% all the time. It is just a hint, and this will
598 * succeed in general.
600 if (ip
->i_udquot
->q_gdquot
!= ip
->i_gdquot
)
601 xfs_qm_dqattach_hint(ip
, XFS_DQ_GROUP
);
603 if (ip
->i_udquot
->q_pdquot
!= ip
->i_pdquot
)
604 xfs_qm_dqattach_hint(ip
, XFS_DQ_PROJ
);
610 if (XFS_IS_UQUOTA_ON(mp
))
611 ASSERT(ip
->i_udquot
);
612 if (XFS_IS_GQUOTA_ON(mp
))
613 ASSERT(ip
->i_gdquot
);
614 if (XFS_IS_PQUOTA_ON(mp
))
615 ASSERT(ip
->i_pdquot
);
617 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
624 struct xfs_inode
*ip
,
629 if (!xfs_qm_need_dqattach(ip
))
632 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
633 error
= xfs_qm_dqattach_locked(ip
, flags
);
634 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
640 * Release dquots (and their references) if any.
641 * The inode should be locked EXCL except when this's called by
648 if (!(ip
->i_udquot
|| ip
->i_gdquot
|| ip
->i_pdquot
))
651 trace_xfs_dquot_dqdetach(ip
);
653 ASSERT(!xfs_is_quota_inode(&ip
->i_mount
->m_sb
, ip
->i_ino
));
655 xfs_qm_dqrele(ip
->i_udquot
);
659 xfs_qm_dqrele(ip
->i_gdquot
);
663 xfs_qm_dqrele(ip
->i_pdquot
);
669 xfs_qm_calc_dquots_per_chunk(
670 struct xfs_mount
*mp
,
671 unsigned int nbblks
) /* basic block units */
673 unsigned int ndquots
;
676 ndquots
= BBTOB(nbblks
);
677 do_div(ndquots
, sizeof(xfs_dqblk_t
));
682 struct xfs_qm_isolate
{
683 struct list_head buffers
;
684 struct list_head dispose
;
687 static enum lru_status
688 xfs_qm_dquot_isolate(
689 struct list_head
*item
,
690 spinlock_t
*lru_lock
,
693 struct xfs_dquot
*dqp
= container_of(item
,
694 struct xfs_dquot
, q_lru
);
695 struct xfs_qm_isolate
*isol
= arg
;
697 if (!xfs_dqlock_nowait(dqp
))
701 * This dquot has acquired a reference in the meantime remove it from
702 * the freelist and try again.
706 XFS_STATS_INC(xs_qm_dqwants
);
708 trace_xfs_dqreclaim_want(dqp
);
709 list_del_init(&dqp
->q_lru
);
710 XFS_STATS_DEC(xs_qm_dquot_unused
);
715 * If the dquot is dirty, flush it. If it's already being flushed, just
716 * skip it so there is time for the IO to complete before we try to
717 * reclaim it again on the next LRU pass.
719 if (!xfs_dqflock_nowait(dqp
)) {
724 if (XFS_DQ_IS_DIRTY(dqp
)) {
725 struct xfs_buf
*bp
= NULL
;
728 trace_xfs_dqreclaim_dirty(dqp
);
730 /* we have to drop the LRU lock to flush the dquot */
731 spin_unlock(lru_lock
);
733 error
= xfs_qm_dqflush(dqp
, &bp
);
735 xfs_warn(dqp
->q_mount
, "%s: dquot %p flush failed",
737 goto out_unlock_dirty
;
740 xfs_buf_delwri_queue(bp
, &isol
->buffers
);
742 goto out_unlock_dirty
;
747 * Prevent lookups now that we are past the point of no return.
749 dqp
->dq_flags
|= XFS_DQ_FREEING
;
752 ASSERT(dqp
->q_nrefs
== 0);
753 list_move_tail(&dqp
->q_lru
, &isol
->dispose
);
754 XFS_STATS_DEC(xs_qm_dquot_unused
);
755 trace_xfs_dqreclaim_done(dqp
);
756 XFS_STATS_INC(xs_qm_dqreclaims
);
760 trace_xfs_dqreclaim_busy(dqp
);
761 XFS_STATS_INC(xs_qm_dqreclaim_misses
);
765 trace_xfs_dqreclaim_busy(dqp
);
766 XFS_STATS_INC(xs_qm_dqreclaim_misses
);
774 struct shrinker
*shrink
,
775 struct shrink_control
*sc
)
777 struct xfs_quotainfo
*qi
= container_of(shrink
,
778 struct xfs_quotainfo
, qi_shrinker
);
779 struct xfs_qm_isolate isol
;
782 unsigned long nr_to_scan
= sc
->nr_to_scan
;
784 if ((sc
->gfp_mask
& (__GFP_FS
|__GFP_WAIT
)) != (__GFP_FS
|__GFP_WAIT
))
787 INIT_LIST_HEAD(&isol
.buffers
);
788 INIT_LIST_HEAD(&isol
.dispose
);
790 freed
= list_lru_walk_node(&qi
->qi_lru
, sc
->nid
, xfs_qm_dquot_isolate
, &isol
,
793 error
= xfs_buf_delwri_submit(&isol
.buffers
);
795 xfs_warn(NULL
, "%s: dquot reclaim failed", __func__
);
797 while (!list_empty(&isol
.dispose
)) {
798 struct xfs_dquot
*dqp
;
800 dqp
= list_first_entry(&isol
.dispose
, struct xfs_dquot
, q_lru
);
801 list_del_init(&dqp
->q_lru
);
802 xfs_qm_dqfree_one(dqp
);
810 struct shrinker
*shrink
,
811 struct shrink_control
*sc
)
813 struct xfs_quotainfo
*qi
= container_of(shrink
,
814 struct xfs_quotainfo
, qi_shrinker
);
816 return list_lru_count_node(&qi
->qi_lru
, sc
->nid
);
820 * This initializes all the quota information that's kept in the
824 xfs_qm_init_quotainfo(
827 xfs_quotainfo_t
*qinf
;
831 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
833 qinf
= mp
->m_quotainfo
= kmem_zalloc(sizeof(xfs_quotainfo_t
), KM_SLEEP
);
835 if ((error
= list_lru_init(&qinf
->qi_lru
))) {
837 mp
->m_quotainfo
= NULL
;
842 * See if quotainodes are setup, and if not, allocate them,
843 * and change the superblock accordingly.
845 if ((error
= xfs_qm_init_quotainos(mp
))) {
846 list_lru_destroy(&qinf
->qi_lru
);
848 mp
->m_quotainfo
= NULL
;
852 INIT_RADIX_TREE(&qinf
->qi_uquota_tree
, GFP_NOFS
);
853 INIT_RADIX_TREE(&qinf
->qi_gquota_tree
, GFP_NOFS
);
854 INIT_RADIX_TREE(&qinf
->qi_pquota_tree
, GFP_NOFS
);
855 mutex_init(&qinf
->qi_tree_lock
);
857 /* mutex used to serialize quotaoffs */
858 mutex_init(&qinf
->qi_quotaofflock
);
860 /* Precalc some constants */
861 qinf
->qi_dqchunklen
= XFS_FSB_TO_BB(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
862 qinf
->qi_dqperchunk
= xfs_qm_calc_dquots_per_chunk(mp
,
863 qinf
->qi_dqchunklen
);
865 mp
->m_qflags
|= (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_CHKD
);
868 * We try to get the limits from the superuser's limits fields.
869 * This is quite hacky, but it is standard quota practice.
871 * We look at the USR dquot with id == 0 first, but if user quotas
872 * are not enabled we goto the GRP dquot with id == 0.
873 * We don't really care to keep separate default limits for user
874 * and group quotas, at least not at this point.
876 * Since we may not have done a quotacheck by this point, just read
877 * the dquot without attaching it to any hashtables or lists.
879 error
= xfs_qm_dqread(mp
, 0,
880 XFS_IS_UQUOTA_RUNNING(mp
) ? XFS_DQ_USER
:
881 (XFS_IS_GQUOTA_RUNNING(mp
) ? XFS_DQ_GROUP
:
883 XFS_QMOPT_DOWARN
, &dqp
);
885 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
888 * The warnings and timers set the grace period given to
889 * a user or group before he or she can not perform any
890 * more writing. If it is zero, a default is used.
892 qinf
->qi_btimelimit
= ddqp
->d_btimer
?
893 be32_to_cpu(ddqp
->d_btimer
) : XFS_QM_BTIMELIMIT
;
894 qinf
->qi_itimelimit
= ddqp
->d_itimer
?
895 be32_to_cpu(ddqp
->d_itimer
) : XFS_QM_ITIMELIMIT
;
896 qinf
->qi_rtbtimelimit
= ddqp
->d_rtbtimer
?
897 be32_to_cpu(ddqp
->d_rtbtimer
) : XFS_QM_RTBTIMELIMIT
;
898 qinf
->qi_bwarnlimit
= ddqp
->d_bwarns
?
899 be16_to_cpu(ddqp
->d_bwarns
) : XFS_QM_BWARNLIMIT
;
900 qinf
->qi_iwarnlimit
= ddqp
->d_iwarns
?
901 be16_to_cpu(ddqp
->d_iwarns
) : XFS_QM_IWARNLIMIT
;
902 qinf
->qi_rtbwarnlimit
= ddqp
->d_rtbwarns
?
903 be16_to_cpu(ddqp
->d_rtbwarns
) : XFS_QM_RTBWARNLIMIT
;
904 qinf
->qi_bhardlimit
= be64_to_cpu(ddqp
->d_blk_hardlimit
);
905 qinf
->qi_bsoftlimit
= be64_to_cpu(ddqp
->d_blk_softlimit
);
906 qinf
->qi_ihardlimit
= be64_to_cpu(ddqp
->d_ino_hardlimit
);
907 qinf
->qi_isoftlimit
= be64_to_cpu(ddqp
->d_ino_softlimit
);
908 qinf
->qi_rtbhardlimit
= be64_to_cpu(ddqp
->d_rtb_hardlimit
);
909 qinf
->qi_rtbsoftlimit
= be64_to_cpu(ddqp
->d_rtb_softlimit
);
911 xfs_qm_dqdestroy(dqp
);
913 qinf
->qi_btimelimit
= XFS_QM_BTIMELIMIT
;
914 qinf
->qi_itimelimit
= XFS_QM_ITIMELIMIT
;
915 qinf
->qi_rtbtimelimit
= XFS_QM_RTBTIMELIMIT
;
916 qinf
->qi_bwarnlimit
= XFS_QM_BWARNLIMIT
;
917 qinf
->qi_iwarnlimit
= XFS_QM_IWARNLIMIT
;
918 qinf
->qi_rtbwarnlimit
= XFS_QM_RTBWARNLIMIT
;
921 qinf
->qi_shrinker
.count_objects
= xfs_qm_shrink_count
;
922 qinf
->qi_shrinker
.scan_objects
= xfs_qm_shrink_scan
;
923 qinf
->qi_shrinker
.seeks
= DEFAULT_SEEKS
;
924 qinf
->qi_shrinker
.flags
= SHRINKER_NUMA_AWARE
;
925 register_shrinker(&qinf
->qi_shrinker
);
931 * Gets called when unmounting a filesystem or when all quotas get
933 * This purges the quota inodes, destroys locks and frees itself.
936 xfs_qm_destroy_quotainfo(
941 qi
= mp
->m_quotainfo
;
944 unregister_shrinker(&qi
->qi_shrinker
);
945 list_lru_destroy(&qi
->qi_lru
);
947 if (qi
->qi_uquotaip
) {
948 IRELE(qi
->qi_uquotaip
);
949 qi
->qi_uquotaip
= NULL
; /* paranoia */
951 if (qi
->qi_gquotaip
) {
952 IRELE(qi
->qi_gquotaip
);
953 qi
->qi_gquotaip
= NULL
;
955 if (qi
->qi_pquotaip
) {
956 IRELE(qi
->qi_pquotaip
);
957 qi
->qi_pquotaip
= NULL
;
959 mutex_destroy(&qi
->qi_quotaofflock
);
961 mp
->m_quotainfo
= NULL
;
965 * Create an inode and return with a reference already taken, but unlocked
966 * This is how we create quota inodes
981 * With superblock that doesn't have separate pquotino, we
982 * share an inode between gquota and pquota. If the on-disk
983 * superblock has GQUOTA and the filesystem is now mounted
984 * with PQUOTA, just use sb_gquotino for sb_pquotino and
987 if (!xfs_sb_version_has_pquotino(&mp
->m_sb
) &&
988 (flags
& (XFS_QMOPT_PQUOTA
|XFS_QMOPT_GQUOTA
))) {
989 xfs_ino_t ino
= NULLFSINO
;
991 if ((flags
& XFS_QMOPT_PQUOTA
) &&
992 (mp
->m_sb
.sb_gquotino
!= NULLFSINO
)) {
993 ino
= mp
->m_sb
.sb_gquotino
;
994 ASSERT(mp
->m_sb
.sb_pquotino
== NULLFSINO
);
995 } else if ((flags
& XFS_QMOPT_GQUOTA
) &&
996 (mp
->m_sb
.sb_pquotino
!= NULLFSINO
)) {
997 ino
= mp
->m_sb
.sb_pquotino
;
998 ASSERT(mp
->m_sb
.sb_gquotino
== NULLFSINO
);
1000 if (ino
!= NULLFSINO
) {
1001 error
= xfs_iget(mp
, NULL
, ino
, 0, 0, ip
);
1004 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
1005 mp
->m_sb
.sb_pquotino
= NULLFSINO
;
1009 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_QINOCREATE
);
1010 error
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_create
,
1011 XFS_QM_QINOCREATE_SPACE_RES(mp
), 0);
1013 xfs_trans_cancel(tp
, 0);
1018 error
= xfs_dir_ialloc(&tp
, NULL
, S_IFREG
, 1, 0, 0, 1, ip
,
1021 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
|
1028 * Make the changes in the superblock, and log those too.
1029 * sbfields arg may contain fields other than *QUOTINO;
1030 * VERSIONNUM for example.
1032 spin_lock(&mp
->m_sb_lock
);
1033 if (flags
& XFS_QMOPT_SBVERSION
) {
1034 ASSERT(!xfs_sb_version_hasquota(&mp
->m_sb
));
1035 ASSERT((sbfields
& (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1036 XFS_SB_GQUOTINO
| XFS_SB_PQUOTINO
| XFS_SB_QFLAGS
)) ==
1037 (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1038 XFS_SB_GQUOTINO
| XFS_SB_PQUOTINO
|
1041 xfs_sb_version_addquota(&mp
->m_sb
);
1042 mp
->m_sb
.sb_uquotino
= NULLFSINO
;
1043 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
1044 mp
->m_sb
.sb_pquotino
= NULLFSINO
;
1046 /* qflags will get updated fully _after_ quotacheck */
1047 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_ALL_QUOTA_ACCT
;
1049 if (flags
& XFS_QMOPT_UQUOTA
)
1050 mp
->m_sb
.sb_uquotino
= (*ip
)->i_ino
;
1051 else if (flags
& XFS_QMOPT_GQUOTA
)
1052 mp
->m_sb
.sb_gquotino
= (*ip
)->i_ino
;
1054 mp
->m_sb
.sb_pquotino
= (*ip
)->i_ino
;
1055 spin_unlock(&mp
->m_sb_lock
);
1056 xfs_mod_sb(tp
, sbfields
);
1058 if ((error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
))) {
1059 xfs_alert(mp
, "%s failed (error %d)!", __func__
, error
);
1067 xfs_qm_reset_dqcounts(
1073 struct xfs_dqblk
*dqb
;
1076 trace_xfs_reset_dqcounts(bp
, _RET_IP_
);
1079 * Reset all counters and timers. They'll be
1080 * started afresh by xfs_qm_quotacheck.
1083 j
= XFS_FSB_TO_B(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
1084 do_div(j
, sizeof(xfs_dqblk_t
));
1085 ASSERT(mp
->m_quotainfo
->qi_dqperchunk
== j
);
1088 for (j
= 0; j
< mp
->m_quotainfo
->qi_dqperchunk
; j
++) {
1089 struct xfs_disk_dquot
*ddq
;
1091 ddq
= (struct xfs_disk_dquot
*)&dqb
[j
];
1094 * Do a sanity check, and if needed, repair the dqblk. Don't
1095 * output any warnings because it's perfectly possible to
1096 * find uninitialised dquot blks. See comment in xfs_qm_dqcheck.
1098 (void) xfs_qm_dqcheck(mp
, ddq
, id
+j
, type
, XFS_QMOPT_DQREPAIR
,
1102 ddq
->d_rtbcount
= 0;
1105 ddq
->d_rtbtimer
= 0;
1108 ddq
->d_rtbwarns
= 0;
1110 if (xfs_sb_version_hascrc(&mp
->m_sb
)) {
1111 xfs_update_cksum((char *)&dqb
[j
],
1112 sizeof(struct xfs_dqblk
),
1120 struct xfs_mount
*mp
,
1123 xfs_filblks_t blkcnt
,
1125 struct list_head
*buffer_list
)
1132 type
= flags
& XFS_QMOPT_UQUOTA
? XFS_DQ_USER
:
1133 (flags
& XFS_QMOPT_PQUOTA
? XFS_DQ_PROJ
: XFS_DQ_GROUP
);
1137 * Blkcnt arg can be a very big number, and might even be
1138 * larger than the log itself. So, we have to break it up into
1139 * manageable-sized transactions.
1140 * Note that we don't start a permanent transaction here; we might
1141 * not be able to get a log reservation for the whole thing up front,
1142 * and we don't really care to either, because we just discard
1143 * everything if we were to crash in the middle of this loop.
1146 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
1147 XFS_FSB_TO_DADDR(mp
, bno
),
1148 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
,
1149 &xfs_dquot_buf_ops
);
1152 * CRC and validation errors will return a EFSCORRUPTED here. If
1153 * this occurs, re-read without CRC validation so that we can
1154 * repair the damage via xfs_qm_reset_dqcounts(). This process
1155 * will leave a trace in the log indicating corruption has
1158 if (error
== EFSCORRUPTED
) {
1159 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
1160 XFS_FSB_TO_DADDR(mp
, bno
),
1161 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
,
1168 xfs_qm_reset_dqcounts(mp
, bp
, firstid
, type
);
1169 xfs_buf_delwri_queue(bp
, buffer_list
);
1172 /* goto the next block. */
1174 firstid
+= mp
->m_quotainfo
->qi_dqperchunk
;
1181 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
1182 * caller supplied function for every chunk of dquots that we find.
1186 struct xfs_mount
*mp
,
1187 struct xfs_inode
*qip
,
1189 struct list_head
*buffer_list
)
1191 struct xfs_bmbt_irec
*map
;
1192 int i
, nmaps
; /* number of map entries */
1193 int error
; /* return value */
1194 xfs_fileoff_t lblkno
;
1195 xfs_filblks_t maxlblkcnt
;
1197 xfs_fsblock_t rablkno
;
1198 xfs_filblks_t rablkcnt
;
1202 * This looks racy, but we can't keep an inode lock across a
1203 * trans_reserve. But, this gets called during quotacheck, and that
1204 * happens only at mount time which is single threaded.
1206 if (qip
->i_d
.di_nblocks
== 0)
1209 map
= kmem_alloc(XFS_DQITER_MAP_SIZE
* sizeof(*map
), KM_SLEEP
);
1212 maxlblkcnt
= XFS_B_TO_FSB(mp
, mp
->m_super
->s_maxbytes
);
1214 nmaps
= XFS_DQITER_MAP_SIZE
;
1216 * We aren't changing the inode itself. Just changing
1217 * some of its data. No new blocks are added here, and
1218 * the inode is never added to the transaction.
1220 xfs_ilock(qip
, XFS_ILOCK_SHARED
);
1221 error
= xfs_bmapi_read(qip
, lblkno
, maxlblkcnt
- lblkno
,
1223 xfs_iunlock(qip
, XFS_ILOCK_SHARED
);
1227 ASSERT(nmaps
<= XFS_DQITER_MAP_SIZE
);
1228 for (i
= 0; i
< nmaps
; i
++) {
1229 ASSERT(map
[i
].br_startblock
!= DELAYSTARTBLOCK
);
1230 ASSERT(map
[i
].br_blockcount
);
1233 lblkno
+= map
[i
].br_blockcount
;
1235 if (map
[i
].br_startblock
== HOLESTARTBLOCK
)
1238 firstid
= (xfs_dqid_t
) map
[i
].br_startoff
*
1239 mp
->m_quotainfo
->qi_dqperchunk
;
1241 * Do a read-ahead on the next extent.
1243 if ((i
+1 < nmaps
) &&
1244 (map
[i
+1].br_startblock
!= HOLESTARTBLOCK
)) {
1245 rablkcnt
= map
[i
+1].br_blockcount
;
1246 rablkno
= map
[i
+1].br_startblock
;
1247 while (rablkcnt
--) {
1248 xfs_buf_readahead(mp
->m_ddev_targp
,
1249 XFS_FSB_TO_DADDR(mp
, rablkno
),
1250 mp
->m_quotainfo
->qi_dqchunklen
,
1256 * Iterate thru all the blks in the extent and
1257 * reset the counters of all the dquots inside them.
1259 error
= xfs_qm_dqiter_bufs(mp
, firstid
,
1260 map
[i
].br_startblock
,
1261 map
[i
].br_blockcount
,
1262 flags
, buffer_list
);
1266 } while (nmaps
> 0);
1274 * Called by dqusage_adjust in doing a quotacheck.
1276 * Given the inode, and a dquot id this updates both the incore dqout as well
1277 * as the buffer copy. This is so that once the quotacheck is done, we can
1278 * just log all the buffers, as opposed to logging numerous updates to
1279 * individual dquots.
1282 xfs_qm_quotacheck_dqadjust(
1283 struct xfs_inode
*ip
,
1289 struct xfs_mount
*mp
= ip
->i_mount
;
1290 struct xfs_dquot
*dqp
;
1293 error
= xfs_qm_dqget(mp
, ip
, id
, type
,
1294 XFS_QMOPT_DQALLOC
| XFS_QMOPT_DOWARN
, &dqp
);
1297 * Shouldn't be able to turn off quotas here.
1299 ASSERT(error
!= ESRCH
);
1300 ASSERT(error
!= ENOENT
);
1304 trace_xfs_dqadjust(dqp
);
1307 * Adjust the inode count and the block count to reflect this inode's
1310 be64_add_cpu(&dqp
->q_core
.d_icount
, 1);
1311 dqp
->q_res_icount
++;
1313 be64_add_cpu(&dqp
->q_core
.d_bcount
, nblks
);
1314 dqp
->q_res_bcount
+= nblks
;
1317 be64_add_cpu(&dqp
->q_core
.d_rtbcount
, rtblks
);
1318 dqp
->q_res_rtbcount
+= rtblks
;
1322 * Set default limits, adjust timers (since we changed usages)
1324 * There are no timers for the default values set in the root dquot.
1326 if (dqp
->q_core
.d_id
) {
1327 xfs_qm_adjust_dqlimits(mp
, dqp
);
1328 xfs_qm_adjust_dqtimers(mp
, &dqp
->q_core
);
1331 dqp
->dq_flags
|= XFS_DQ_DIRTY
;
1339 xfs_qcnt_t
*O_rtblks
)
1341 xfs_filblks_t rtblks
; /* total rt blks */
1342 xfs_extnum_t idx
; /* extent record index */
1343 xfs_ifork_t
*ifp
; /* inode fork pointer */
1344 xfs_extnum_t nextents
; /* number of extent entries */
1347 ASSERT(XFS_IS_REALTIME_INODE(ip
));
1348 ifp
= XFS_IFORK_PTR(ip
, XFS_DATA_FORK
);
1349 if (!(ifp
->if_flags
& XFS_IFEXTENTS
)) {
1350 if ((error
= xfs_iread_extents(NULL
, ip
, XFS_DATA_FORK
)))
1354 nextents
= ifp
->if_bytes
/ (uint
)sizeof(xfs_bmbt_rec_t
);
1355 for (idx
= 0; idx
< nextents
; idx
++)
1356 rtblks
+= xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp
, idx
));
1357 *O_rtblks
= (xfs_qcnt_t
)rtblks
;
1362 * callback routine supplied to bulkstat(). Given an inumber, find its
1363 * dquots and update them to account for resources taken by that inode.
1367 xfs_qm_dqusage_adjust(
1368 xfs_mount_t
*mp
, /* mount point for filesystem */
1369 xfs_ino_t ino
, /* inode number to get data for */
1370 void __user
*buffer
, /* not used */
1371 int ubsize
, /* not used */
1372 int *ubused
, /* not used */
1373 int *res
) /* result code value */
1376 xfs_qcnt_t nblks
, rtblks
= 0;
1379 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1382 * rootino must have its resources accounted for, not so with the quota
1385 if (xfs_is_quota_inode(&mp
->m_sb
, ino
)) {
1386 *res
= BULKSTAT_RV_NOTHING
;
1387 return XFS_ERROR(EINVAL
);
1391 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1392 * interface expects the inode to be exclusively locked because that's
1393 * the case in all other instances. It's OK that we do this because
1394 * quotacheck is done only at mount time.
1396 error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_EXCL
, &ip
);
1398 *res
= BULKSTAT_RV_NOTHING
;
1402 ASSERT(ip
->i_delayed_blks
== 0);
1404 if (XFS_IS_REALTIME_INODE(ip
)) {
1406 * Walk thru the extent list and count the realtime blocks.
1408 error
= xfs_qm_get_rtblks(ip
, &rtblks
);
1413 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
- rtblks
;
1416 * Add the (disk blocks and inode) resources occupied by this
1417 * inode to its dquots. We do this adjustment in the incore dquot,
1418 * and also copy the changes to its buffer.
1419 * We don't care about putting these changes in a transaction
1420 * envelope because if we crash in the middle of a 'quotacheck'
1421 * we have to start from the beginning anyway.
1422 * Once we're done, we'll log all the dquot bufs.
1424 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1425 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1427 if (XFS_IS_UQUOTA_ON(mp
)) {
1428 error
= xfs_qm_quotacheck_dqadjust(ip
, ip
->i_d
.di_uid
,
1429 XFS_DQ_USER
, nblks
, rtblks
);
1434 if (XFS_IS_GQUOTA_ON(mp
)) {
1435 error
= xfs_qm_quotacheck_dqadjust(ip
, ip
->i_d
.di_gid
,
1436 XFS_DQ_GROUP
, nblks
, rtblks
);
1441 if (XFS_IS_PQUOTA_ON(mp
)) {
1442 error
= xfs_qm_quotacheck_dqadjust(ip
, xfs_get_projid(ip
),
1443 XFS_DQ_PROJ
, nblks
, rtblks
);
1448 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1450 *res
= BULKSTAT_RV_DIDONE
;
1454 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1456 *res
= BULKSTAT_RV_GIVEUP
;
1462 struct xfs_dquot
*dqp
,
1465 struct list_head
*buffer_list
= data
;
1466 struct xfs_buf
*bp
= NULL
;
1470 if (dqp
->dq_flags
& XFS_DQ_FREEING
)
1472 if (!XFS_DQ_IS_DIRTY(dqp
))
1476 error
= xfs_qm_dqflush(dqp
, &bp
);
1480 xfs_buf_delwri_queue(bp
, buffer_list
);
1488 * Walk thru all the filesystem inodes and construct a consistent view
1489 * of the disk quota world. If the quotacheck fails, disable quotas.
1495 int done
, count
, error
, error2
;
1499 LIST_HEAD (buffer_list
);
1500 struct xfs_inode
*uip
= mp
->m_quotainfo
->qi_uquotaip
;
1501 struct xfs_inode
*gip
= mp
->m_quotainfo
->qi_gquotaip
;
1502 struct xfs_inode
*pip
= mp
->m_quotainfo
->qi_pquotaip
;
1509 ASSERT(uip
|| gip
|| pip
);
1510 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1512 xfs_notice(mp
, "Quotacheck needed: Please wait.");
1515 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1516 * their counters to zero. We need a clean slate.
1517 * We don't log our changes till later.
1520 error
= xfs_qm_dqiterate(mp
, uip
, XFS_QMOPT_UQUOTA
,
1524 flags
|= XFS_UQUOTA_CHKD
;
1528 error
= xfs_qm_dqiterate(mp
, gip
, XFS_QMOPT_GQUOTA
,
1532 flags
|= XFS_GQUOTA_CHKD
;
1536 error
= xfs_qm_dqiterate(mp
, pip
, XFS_QMOPT_PQUOTA
,
1540 flags
|= XFS_PQUOTA_CHKD
;
1545 * Iterate thru all the inodes in the file system,
1546 * adjusting the corresponding dquot counters in core.
1548 error
= xfs_bulkstat(mp
, &lastino
, &count
,
1549 xfs_qm_dqusage_adjust
,
1550 structsz
, NULL
, &done
);
1557 * We've made all the changes that we need to make incore. Flush them
1558 * down to disk buffers if everything was updated successfully.
1560 if (XFS_IS_UQUOTA_ON(mp
)) {
1561 error
= xfs_qm_dquot_walk(mp
, XFS_DQ_USER
, xfs_qm_flush_one
,
1564 if (XFS_IS_GQUOTA_ON(mp
)) {
1565 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_GROUP
, xfs_qm_flush_one
,
1570 if (XFS_IS_PQUOTA_ON(mp
)) {
1571 error2
= xfs_qm_dquot_walk(mp
, XFS_DQ_PROJ
, xfs_qm_flush_one
,
1577 error2
= xfs_buf_delwri_submit(&buffer_list
);
1582 * We can get this error if we couldn't do a dquot allocation inside
1583 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1584 * dirty dquots that might be cached, we just want to get rid of them
1585 * and turn quotaoff. The dquots won't be attached to any of the inodes
1586 * at this point (because we intentionally didn't in dqget_noattach).
1589 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
1594 * If one type of quotas is off, then it will lose its
1595 * quotachecked status, since we won't be doing accounting for
1596 * that type anymore.
1598 mp
->m_qflags
&= ~XFS_ALL_QUOTA_CHKD
;
1599 mp
->m_qflags
|= flags
;
1602 while (!list_empty(&buffer_list
)) {
1603 struct xfs_buf
*bp
=
1604 list_first_entry(&buffer_list
, struct xfs_buf
, b_list
);
1605 list_del_init(&bp
->b_list
);
1611 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1614 * We must turn off quotas.
1616 ASSERT(mp
->m_quotainfo
!= NULL
);
1617 xfs_qm_destroy_quotainfo(mp
);
1618 if (xfs_mount_reset_sbqflags(mp
)) {
1620 "Quotacheck: Failed to reset quota flags.");
1623 xfs_notice(mp
, "Quotacheck: Done.");
1628 * This is called after the superblock has been read in and we're ready to
1629 * iget the quota inodes.
1632 xfs_qm_init_quotainos(
1635 struct xfs_inode
*uip
= NULL
;
1636 struct xfs_inode
*gip
= NULL
;
1637 struct xfs_inode
*pip
= NULL
;
1639 __int64_t sbflags
= 0;
1642 ASSERT(mp
->m_quotainfo
);
1645 * Get the uquota and gquota inodes
1647 if (xfs_sb_version_hasquota(&mp
->m_sb
)) {
1648 if (XFS_IS_UQUOTA_ON(mp
) &&
1649 mp
->m_sb
.sb_uquotino
!= NULLFSINO
) {
1650 ASSERT(mp
->m_sb
.sb_uquotino
> 0);
1651 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_uquotino
,
1654 return XFS_ERROR(error
);
1656 if (XFS_IS_GQUOTA_ON(mp
) &&
1657 mp
->m_sb
.sb_gquotino
!= NULLFSINO
) {
1658 ASSERT(mp
->m_sb
.sb_gquotino
> 0);
1659 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_gquotino
,
1664 if (XFS_IS_PQUOTA_ON(mp
) &&
1665 mp
->m_sb
.sb_pquotino
!= NULLFSINO
) {
1666 ASSERT(mp
->m_sb
.sb_pquotino
> 0);
1667 error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_pquotino
,
1673 flags
|= XFS_QMOPT_SBVERSION
;
1674 sbflags
|= (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1675 XFS_SB_GQUOTINO
| XFS_SB_PQUOTINO
|
1680 * Create the three inodes, if they don't exist already. The changes
1681 * made above will get added to a transaction and logged in one of
1682 * the qino_alloc calls below. If the device is readonly,
1683 * temporarily switch to read-write to do this.
1685 if (XFS_IS_UQUOTA_ON(mp
) && uip
== NULL
) {
1686 error
= xfs_qm_qino_alloc(mp
, &uip
,
1687 sbflags
| XFS_SB_UQUOTINO
,
1688 flags
| XFS_QMOPT_UQUOTA
);
1692 flags
&= ~XFS_QMOPT_SBVERSION
;
1694 if (XFS_IS_GQUOTA_ON(mp
) && gip
== NULL
) {
1695 error
= xfs_qm_qino_alloc(mp
, &gip
,
1696 sbflags
| XFS_SB_GQUOTINO
,
1697 flags
| XFS_QMOPT_GQUOTA
);
1701 flags
&= ~XFS_QMOPT_SBVERSION
;
1703 if (XFS_IS_PQUOTA_ON(mp
) && pip
== NULL
) {
1704 error
= xfs_qm_qino_alloc(mp
, &pip
,
1705 sbflags
| XFS_SB_PQUOTINO
,
1706 flags
| XFS_QMOPT_PQUOTA
);
1711 mp
->m_quotainfo
->qi_uquotaip
= uip
;
1712 mp
->m_quotainfo
->qi_gquotaip
= gip
;
1713 mp
->m_quotainfo
->qi_pquotaip
= pip
;
1724 return XFS_ERROR(error
);
1729 struct xfs_dquot
*dqp
)
1731 struct xfs_mount
*mp
= dqp
->q_mount
;
1732 struct xfs_quotainfo
*qi
= mp
->m_quotainfo
;
1734 mutex_lock(&qi
->qi_tree_lock
);
1735 radix_tree_delete(xfs_dquot_tree(qi
, dqp
->q_core
.d_flags
),
1736 be32_to_cpu(dqp
->q_core
.d_id
));
1739 mutex_unlock(&qi
->qi_tree_lock
);
1741 xfs_qm_dqdestroy(dqp
);
1745 * Start a transaction and write the incore superblock changes to
1746 * disk. flags parameter indicates which fields have changed.
1749 xfs_qm_write_sb_changes(
1756 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_SBCHANGE
);
1757 error
= xfs_trans_reserve(tp
, &M_RES(mp
)->tr_qm_sbchange
, 0, 0);
1759 xfs_trans_cancel(tp
, 0);
1763 xfs_mod_sb(tp
, flags
);
1764 error
= xfs_trans_commit(tp
, 0);
1770 /* --------------- utility functions for vnodeops ---------------- */
1774 * Given an inode, a uid, gid and prid make sure that we have
1775 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1776 * quotas by creating this file.
1777 * This also attaches dquot(s) to the given inode after locking it,
1778 * and returns the dquots corresponding to the uid and/or gid.
1780 * in : inode (unlocked)
1781 * out : udquot, gdquot with references taken and unlocked
1785 struct xfs_inode
*ip
,
1790 struct xfs_dquot
**O_udqpp
,
1791 struct xfs_dquot
**O_gdqpp
,
1792 struct xfs_dquot
**O_pdqpp
)
1794 struct xfs_mount
*mp
= ip
->i_mount
;
1795 struct xfs_dquot
*uq
= NULL
;
1796 struct xfs_dquot
*gq
= NULL
;
1797 struct xfs_dquot
*pq
= NULL
;
1801 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
1804 lockflags
= XFS_ILOCK_EXCL
;
1805 xfs_ilock(ip
, lockflags
);
1807 if ((flags
& XFS_QMOPT_INHERIT
) && XFS_INHERIT_GID(ip
))
1808 gid
= ip
->i_d
.di_gid
;
1811 * Attach the dquot(s) to this inode, doing a dquot allocation
1812 * if necessary. The dquot(s) will not be locked.
1814 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
1815 error
= xfs_qm_dqattach_locked(ip
, XFS_QMOPT_DQALLOC
);
1817 xfs_iunlock(ip
, lockflags
);
1822 if ((flags
& XFS_QMOPT_UQUOTA
) && XFS_IS_UQUOTA_ON(mp
)) {
1823 if (ip
->i_d
.di_uid
!= uid
) {
1825 * What we need is the dquot that has this uid, and
1826 * if we send the inode to dqget, the uid of the inode
1827 * takes priority over what's sent in the uid argument.
1828 * We must unlock inode here before calling dqget if
1829 * we're not sending the inode, because otherwise
1830 * we'll deadlock by doing trans_reserve while
1833 xfs_iunlock(ip
, lockflags
);
1834 error
= xfs_qm_dqget(mp
, NULL
, uid
,
1840 ASSERT(error
!= ENOENT
);
1844 * Get the ilock in the right order.
1847 lockflags
= XFS_ILOCK_SHARED
;
1848 xfs_ilock(ip
, lockflags
);
1851 * Take an extra reference, because we'll return
1854 ASSERT(ip
->i_udquot
);
1855 uq
= xfs_qm_dqhold(ip
->i_udquot
);
1858 if ((flags
& XFS_QMOPT_GQUOTA
) && XFS_IS_GQUOTA_ON(mp
)) {
1859 if (ip
->i_d
.di_gid
!= gid
) {
1860 xfs_iunlock(ip
, lockflags
);
1861 error
= xfs_qm_dqget(mp
, NULL
, gid
,
1867 ASSERT(error
!= ENOENT
);
1871 lockflags
= XFS_ILOCK_SHARED
;
1872 xfs_ilock(ip
, lockflags
);
1874 ASSERT(ip
->i_gdquot
);
1875 gq
= xfs_qm_dqhold(ip
->i_gdquot
);
1878 if ((flags
& XFS_QMOPT_PQUOTA
) && XFS_IS_PQUOTA_ON(mp
)) {
1879 if (xfs_get_projid(ip
) != prid
) {
1880 xfs_iunlock(ip
, lockflags
);
1881 error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)prid
,
1887 ASSERT(error
!= ENOENT
);
1891 lockflags
= XFS_ILOCK_SHARED
;
1892 xfs_ilock(ip
, lockflags
);
1894 ASSERT(ip
->i_pdquot
);
1895 pq
= xfs_qm_dqhold(ip
->i_pdquot
);
1899 trace_xfs_dquot_dqalloc(ip
);
1901 xfs_iunlock(ip
, lockflags
);
1925 * Actually transfer ownership, and do dquot modifications.
1926 * These were already reserved.
1932 xfs_dquot_t
**IO_olddq
,
1935 xfs_dquot_t
*prevdq
;
1936 uint bfield
= XFS_IS_REALTIME_INODE(ip
) ?
1937 XFS_TRANS_DQ_RTBCOUNT
: XFS_TRANS_DQ_BCOUNT
;
1940 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1941 ASSERT(XFS_IS_QUOTA_RUNNING(ip
->i_mount
));
1946 ASSERT(prevdq
!= newdq
);
1948 xfs_trans_mod_dquot(tp
, prevdq
, bfield
, -(ip
->i_d
.di_nblocks
));
1949 xfs_trans_mod_dquot(tp
, prevdq
, XFS_TRANS_DQ_ICOUNT
, -1);
1951 /* the sparkling new dquot */
1952 xfs_trans_mod_dquot(tp
, newdq
, bfield
, ip
->i_d
.di_nblocks
);
1953 xfs_trans_mod_dquot(tp
, newdq
, XFS_TRANS_DQ_ICOUNT
, 1);
1956 * Take an extra reference, because the inode is going to keep
1957 * this dquot pointer even after the trans_commit.
1959 *IO_olddq
= xfs_qm_dqhold(newdq
);
1965 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1968 xfs_qm_vop_chown_reserve(
1969 struct xfs_trans
*tp
,
1970 struct xfs_inode
*ip
,
1971 struct xfs_dquot
*udqp
,
1972 struct xfs_dquot
*gdqp
,
1973 struct xfs_dquot
*pdqp
,
1976 struct xfs_mount
*mp
= ip
->i_mount
;
1977 uint delblks
, blkflags
, prjflags
= 0;
1978 struct xfs_dquot
*udq_unres
= NULL
;
1979 struct xfs_dquot
*gdq_unres
= NULL
;
1980 struct xfs_dquot
*pdq_unres
= NULL
;
1981 struct xfs_dquot
*udq_delblks
= NULL
;
1982 struct xfs_dquot
*gdq_delblks
= NULL
;
1983 struct xfs_dquot
*pdq_delblks
= NULL
;
1987 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
|XFS_ILOCK_SHARED
));
1988 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1990 delblks
= ip
->i_delayed_blks
;
1991 blkflags
= XFS_IS_REALTIME_INODE(ip
) ?
1992 XFS_QMOPT_RES_RTBLKS
: XFS_QMOPT_RES_REGBLKS
;
1994 if (XFS_IS_UQUOTA_ON(mp
) && udqp
&&
1995 ip
->i_d
.di_uid
!= be32_to_cpu(udqp
->q_core
.d_id
)) {
1998 * If there are delayed allocation blocks, then we have to
1999 * unreserve those from the old dquot, and add them to the
2003 ASSERT(ip
->i_udquot
);
2004 udq_unres
= ip
->i_udquot
;
2007 if (XFS_IS_GQUOTA_ON(ip
->i_mount
) && gdqp
&&
2008 ip
->i_d
.di_gid
!= be32_to_cpu(gdqp
->q_core
.d_id
)) {
2011 ASSERT(ip
->i_gdquot
);
2012 gdq_unres
= ip
->i_gdquot
;
2016 if (XFS_IS_PQUOTA_ON(ip
->i_mount
) && pdqp
&&
2017 xfs_get_projid(ip
) != be32_to_cpu(pdqp
->q_core
.d_id
)) {
2018 prjflags
= XFS_QMOPT_ENOSPC
;
2021 ASSERT(ip
->i_pdquot
);
2022 pdq_unres
= ip
->i_pdquot
;
2026 error
= xfs_trans_reserve_quota_bydquots(tp
, ip
->i_mount
,
2027 udq_delblks
, gdq_delblks
, pdq_delblks
,
2028 ip
->i_d
.di_nblocks
, 1,
2029 flags
| blkflags
| prjflags
);
2034 * Do the delayed blks reservations/unreservations now. Since, these
2035 * are done without the help of a transaction, if a reservation fails
2036 * its previous reservations won't be automatically undone by trans
2037 * code. So, we have to do it manually here.
2041 * Do the reservations first. Unreservation can't fail.
2043 ASSERT(udq_delblks
|| gdq_delblks
|| pdq_delblks
);
2044 ASSERT(udq_unres
|| gdq_unres
|| pdq_unres
);
2045 error
= xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2046 udq_delblks
, gdq_delblks
, pdq_delblks
,
2047 (xfs_qcnt_t
)delblks
, 0,
2048 flags
| blkflags
| prjflags
);
2051 xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2052 udq_unres
, gdq_unres
, pdq_unres
,
2053 -((xfs_qcnt_t
)delblks
), 0, blkflags
);
2060 xfs_qm_vop_rename_dqattach(
2061 struct xfs_inode
**i_tab
)
2063 struct xfs_mount
*mp
= i_tab
[0]->i_mount
;
2066 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2069 for (i
= 0; (i
< 4 && i_tab
[i
]); i
++) {
2070 struct xfs_inode
*ip
= i_tab
[i
];
2074 * Watch out for duplicate entries in the table.
2076 if (i
== 0 || ip
!= i_tab
[i
-1]) {
2077 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
2078 error
= xfs_qm_dqattach(ip
, 0);
2088 xfs_qm_vop_create_dqattach(
2089 struct xfs_trans
*tp
,
2090 struct xfs_inode
*ip
,
2091 struct xfs_dquot
*udqp
,
2092 struct xfs_dquot
*gdqp
,
2093 struct xfs_dquot
*pdqp
)
2095 struct xfs_mount
*mp
= tp
->t_mountp
;
2097 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2100 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
2101 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
2104 ASSERT(ip
->i_udquot
== NULL
);
2105 ASSERT(XFS_IS_UQUOTA_ON(mp
));
2106 ASSERT(ip
->i_d
.di_uid
== be32_to_cpu(udqp
->q_core
.d_id
));
2108 ip
->i_udquot
= xfs_qm_dqhold(udqp
);
2109 xfs_trans_mod_dquot(tp
, udqp
, XFS_TRANS_DQ_ICOUNT
, 1);
2112 ASSERT(ip
->i_gdquot
== NULL
);
2113 ASSERT(XFS_IS_GQUOTA_ON(mp
));
2114 ASSERT(ip
->i_d
.di_gid
== be32_to_cpu(gdqp
->q_core
.d_id
));
2115 ip
->i_gdquot
= xfs_qm_dqhold(gdqp
);
2116 xfs_trans_mod_dquot(tp
, gdqp
, XFS_TRANS_DQ_ICOUNT
, 1);
2119 ASSERT(ip
->i_pdquot
== NULL
);
2120 ASSERT(XFS_IS_PQUOTA_ON(mp
));
2121 ASSERT(xfs_get_projid(ip
) == be32_to_cpu(pdqp
->q_core
.d_id
));
2123 ip
->i_pdquot
= xfs_qm_dqhold(pdqp
);
2124 xfs_trans_mod_dquot(tp
, pdqp
, XFS_TRANS_DQ_ICOUNT
, 1);