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) {
126 * Purge a dquot from all tracking data structures and free it.
130 struct xfs_dquot *dqp,
133 struct xfs_mount *mp = dqp->q_mount;
134 struct xfs_quotainfo *qi = mp->m_quotainfo;
137 if ((dqp->dq_flags & XFS_DQ_FREEING) || dqp->q_nrefs != 0) {
142 dqp->dq_flags |= XFS_DQ_FREEING;
147 * If we are turning this type of quotas off, we don't care
148 * about the dirty metadata sitting in this dquot. OTOH, if
149 * we're unmounting, we do care, so we flush it and wait.
151 if (XFS_DQ_IS_DIRTY(dqp)) {
152 struct xfs_buf *bp = NULL;
156 * We don't care about getting disk errors here. We need
157 * to purge this dquot anyway, so we go ahead regardless.
159 error = xfs_qm_dqflush(dqp, &bp);
161 xfs_warn(mp, "%s: dquot %p flush failed",
164 error = xfs_bwrite(bp);
170 ASSERT(atomic_read(&dqp->q_pincount) == 0);
171 ASSERT(XFS_FORCED_SHUTDOWN(mp) ||
172 !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL));
177 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags),
178 be32_to_cpu(dqp->q_core.d_id));
182 * We move dquots to the freelist as soon as their reference count
183 * hits zero, so it really should be on the freelist here.
185 ASSERT(!list_empty(&dqp->q_lru));
186 list_lru_del(&qi->qi_lru, &dqp->q_lru);
187 XFS_STATS_DEC(mp, xs_qm_dquot_unused);
189 xfs_qm_dqdestroy(dqp);
194 * Purge the dquot cache.
198 struct xfs_mount *mp,
201 if (flags & XFS_QMOPT_UQUOTA)
202 xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge, NULL);
203 if (flags & XFS_QMOPT_GQUOTA)
204 xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL);
205 if (flags & XFS_QMOPT_PQUOTA)
206 xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge, NULL);
210 * Just destroy the quotainfo structure.
214 struct xfs_mount *mp)
216 if (mp->m_quotainfo) {
217 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL);
218 xfs_qm_destroy_quotainfo(mp);
223 * Called from the vfsops layer.
226 xfs_qm_unmount_quotas(
230 * Release the dquots that root inode, et al might be holding,
231 * before we flush quotas and blow away the quotainfo structure.
233 ASSERT(mp->m_rootip);
234 xfs_qm_dqdetach(mp->m_rootip);
236 xfs_qm_dqdetach(mp->m_rbmip);
238 xfs_qm_dqdetach(mp->m_rsumip);
241 * Release the quota inodes.
243 if (mp->m_quotainfo) {
244 if (mp->m_quotainfo->qi_uquotaip) {
245 IRELE(mp->m_quotainfo->qi_uquotaip);
246 mp->m_quotainfo->qi_uquotaip = NULL;
248 if (mp->m_quotainfo->qi_gquotaip) {
249 IRELE(mp->m_quotainfo->qi_gquotaip);
250 mp->m_quotainfo->qi_gquotaip = NULL;
252 if (mp->m_quotainfo->qi_pquotaip) {
253 IRELE(mp->m_quotainfo->qi_pquotaip);
254 mp->m_quotainfo->qi_pquotaip = NULL;
265 xfs_dquot_t **IO_idqpp)
270 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
274 * See if we already have it in the inode itself. IO_idqpp is &i_udquot
275 * or &i_gdquot. This made the code look weird, but made the logic a lot
280 trace_xfs_dqattach_found(dqp);
285 * Find the dquot from somewhere. This bumps the reference count of
286 * dquot and returns it locked. This can return ENOENT if dquot didn't
287 * exist on disk and we didn't ask it to allocate; ESRCH if quotas got
288 * turned off suddenly.
290 error = xfs_qm_dqget(ip->i_mount, ip, id, type,
291 doalloc | XFS_QMOPT_DOWARN, &dqp);
295 trace_xfs_dqattach_get(dqp);
298 * dqget may have dropped and re-acquired the ilock, but it guarantees
299 * that the dquot returned is the one that should go in the inode.
307 xfs_qm_need_dqattach(
308 struct xfs_inode *ip)
310 struct xfs_mount *mp = ip->i_mount;
312 if (!XFS_IS_QUOTA_RUNNING(mp))
314 if (!XFS_IS_QUOTA_ON(mp))
316 if (!XFS_NOT_DQATTACHED(mp, ip))
318 if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino))
324 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
326 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
327 * Inode may get unlocked and relocked in here, and the caller must deal with
331 xfs_qm_dqattach_locked(
335 xfs_mount_t *mp = ip->i_mount;
338 if (!xfs_qm_need_dqattach(ip))
341 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
343 if (XFS_IS_UQUOTA_ON(mp) && !ip->i_udquot) {
344 error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER,
345 flags & XFS_QMOPT_DQALLOC,
349 ASSERT(ip->i_udquot);
352 if (XFS_IS_GQUOTA_ON(mp) && !ip->i_gdquot) {
353 error = xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP,
354 flags & XFS_QMOPT_DQALLOC,
358 ASSERT(ip->i_gdquot);
361 if (XFS_IS_PQUOTA_ON(mp) && !ip->i_pdquot) {
362 error = xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ,
363 flags & XFS_QMOPT_DQALLOC,
367 ASSERT(ip->i_pdquot);
372 * Don't worry about the dquots that we may have attached before any
373 * error - they'll get detached later if it has not already been done.
375 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
381 struct xfs_inode *ip,
386 if (!xfs_qm_need_dqattach(ip))
389 xfs_ilock(ip, XFS_ILOCK_EXCL);
390 error = xfs_qm_dqattach_locked(ip, flags);
391 xfs_iunlock(ip, XFS_ILOCK_EXCL);
397 * Release dquots (and their references) if any.
398 * The inode should be locked EXCL except when this's called by
405 if (!(ip->i_udquot || ip->i_gdquot || ip->i_pdquot))
408 trace_xfs_dquot_dqdetach(ip);
410 ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino));
412 xfs_qm_dqrele(ip->i_udquot);
416 xfs_qm_dqrele(ip->i_gdquot);
420 xfs_qm_dqrele(ip->i_pdquot);
425 struct xfs_qm_isolate {
426 struct list_head buffers;
427 struct list_head dispose;
430 static enum lru_status
431 xfs_qm_dquot_isolate(
432 struct list_head *item,
433 struct list_lru_one *lru,
434 spinlock_t *lru_lock,
436 __releases(lru_lock) __acquires(lru_lock)
438 struct xfs_dquot *dqp = container_of(item,
439 struct xfs_dquot, q_lru);
440 struct xfs_qm_isolate *isol = arg;
442 if (!xfs_dqlock_nowait(dqp))
446 * This dquot has acquired a reference in the meantime remove it from
447 * the freelist and try again.
451 XFS_STATS_INC(dqp->q_mount, xs_qm_dqwants);
453 trace_xfs_dqreclaim_want(dqp);
454 list_lru_isolate(lru, &dqp->q_lru);
455 XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused);
460 * If the dquot is dirty, flush it. If it's already being flushed, just
461 * skip it so there is time for the IO to complete before we try to
462 * reclaim it again on the next LRU pass.
464 if (!xfs_dqflock_nowait(dqp)) {
469 if (XFS_DQ_IS_DIRTY(dqp)) {
470 struct xfs_buf *bp = NULL;
473 trace_xfs_dqreclaim_dirty(dqp);
475 /* we have to drop the LRU lock to flush the dquot */
476 spin_unlock(lru_lock);
478 error = xfs_qm_dqflush(dqp, &bp);
480 xfs_warn(dqp->q_mount, "%s: dquot %p flush failed",
482 goto out_unlock_dirty;
485 xfs_buf_delwri_queue(bp, &isol->buffers);
487 goto out_unlock_dirty;
492 * Prevent lookups now that we are past the point of no return.
494 dqp->dq_flags |= XFS_DQ_FREEING;
497 ASSERT(dqp->q_nrefs == 0);
498 list_lru_isolate_move(lru, &dqp->q_lru, &isol->dispose);
499 XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused);
500 trace_xfs_dqreclaim_done(dqp);
501 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaims);
505 trace_xfs_dqreclaim_busy(dqp);
506 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses);
510 trace_xfs_dqreclaim_busy(dqp);
511 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses);
519 struct shrinker *shrink,
520 struct shrink_control *sc)
522 struct xfs_quotainfo *qi = container_of(shrink,
523 struct xfs_quotainfo, qi_shrinker);
524 struct xfs_qm_isolate isol;
528 if ((sc->gfp_mask & (__GFP_FS|__GFP_DIRECT_RECLAIM)) != (__GFP_FS|__GFP_DIRECT_RECLAIM))
531 INIT_LIST_HEAD(&isol.buffers);
532 INIT_LIST_HEAD(&isol.dispose);
534 freed = list_lru_shrink_walk(&qi->qi_lru, sc,
535 xfs_qm_dquot_isolate, &isol);
537 error = xfs_buf_delwri_submit(&isol.buffers);
539 xfs_warn(NULL, "%s: dquot reclaim failed", __func__);
541 while (!list_empty(&isol.dispose)) {
542 struct xfs_dquot *dqp;
544 dqp = list_first_entry(&isol.dispose, struct xfs_dquot, q_lru);
545 list_del_init(&dqp->q_lru);
546 xfs_qm_dqfree_one(dqp);
554 struct shrinker *shrink,
555 struct shrink_control *sc)
557 struct xfs_quotainfo *qi = container_of(shrink,
558 struct xfs_quotainfo, qi_shrinker);
560 return list_lru_shrink_count(&qi->qi_lru, sc);
567 xfs_quotainfo_t *qinf)
570 struct xfs_def_quota *defq;
573 error = xfs_qm_dqread(mp, 0, type, XFS_QMOPT_DOWARN, &dqp);
576 xfs_disk_dquot_t *ddqp = &dqp->q_core;
578 defq = xfs_get_defquota(dqp, qinf);
581 * Timers and warnings have been already set, let's just set the
582 * default limits for this quota type
584 defq->bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit);
585 defq->bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit);
586 defq->ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit);
587 defq->isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit);
588 defq->rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit);
589 defq->rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit);
590 xfs_qm_dqdestroy(dqp);
595 * This initializes all the quota information that's kept in the
599 xfs_qm_init_quotainfo(
602 xfs_quotainfo_t *qinf;
606 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
608 qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP);
610 error = list_lru_init(&qinf->qi_lru);
615 * See if quotainodes are setup, and if not, allocate them,
616 * and change the superblock accordingly.
618 error = xfs_qm_init_quotainos(mp);
622 INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS);
623 INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS);
624 INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS);
625 mutex_init(&qinf->qi_tree_lock);
627 /* mutex used to serialize quotaoffs */
628 mutex_init(&qinf->qi_quotaofflock);
630 /* Precalc some constants */
631 qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
632 qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(qinf->qi_dqchunklen);
634 mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD);
637 * We try to get the limits from the superuser's limits fields.
638 * This is quite hacky, but it is standard quota practice.
640 * Since we may not have done a quotacheck by this point, just read
641 * the dquot without attaching it to any hashtables or lists.
643 * Timers and warnings are globally set by the first timer found in
644 * user/group/proj quota types, otherwise a default value is used.
645 * This should be split into different fields per quota type.
647 error = xfs_qm_dqread(mp, 0,
648 XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER :
649 (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP :
651 XFS_QMOPT_DOWARN, &dqp);
654 xfs_disk_dquot_t *ddqp = &dqp->q_core;
657 * The warnings and timers set the grace period given to
658 * a user or group before he or she can not perform any
659 * more writing. If it is zero, a default is used.
661 qinf->qi_btimelimit = ddqp->d_btimer ?
662 be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT;
663 qinf->qi_itimelimit = ddqp->d_itimer ?
664 be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT;
665 qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ?
666 be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT;
667 qinf->qi_bwarnlimit = ddqp->d_bwarns ?
668 be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT;
669 qinf->qi_iwarnlimit = ddqp->d_iwarns ?
670 be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT;
671 qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ?
672 be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT;
673 xfs_qm_dqdestroy(dqp);
675 qinf->qi_btimelimit = XFS_QM_BTIMELIMIT;
676 qinf->qi_itimelimit = XFS_QM_ITIMELIMIT;
677 qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT;
678 qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT;
679 qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT;
680 qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT;
683 if (XFS_IS_UQUOTA_RUNNING(mp))
684 xfs_qm_set_defquota(mp, XFS_DQ_USER, qinf);
685 if (XFS_IS_GQUOTA_RUNNING(mp))
686 xfs_qm_set_defquota(mp, XFS_DQ_GROUP, qinf);
687 if (XFS_IS_PQUOTA_RUNNING(mp))
688 xfs_qm_set_defquota(mp, XFS_DQ_PROJ, qinf);
690 qinf->qi_shrinker.count_objects = xfs_qm_shrink_count;
691 qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan;
692 qinf->qi_shrinker.seeks = DEFAULT_SEEKS;
693 qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE;
694 register_shrinker(&qinf->qi_shrinker);
698 list_lru_destroy(&qinf->qi_lru);
701 mp->m_quotainfo = NULL;
707 * Gets called when unmounting a filesystem or when all quotas get
709 * This purges the quota inodes, destroys locks and frees itself.
712 xfs_qm_destroy_quotainfo(
717 qi = mp->m_quotainfo;
720 unregister_shrinker(&qi->qi_shrinker);
721 list_lru_destroy(&qi->qi_lru);
723 if (qi->qi_uquotaip) {
724 IRELE(qi->qi_uquotaip);
725 qi->qi_uquotaip = NULL; /* paranoia */
727 if (qi->qi_gquotaip) {
728 IRELE(qi->qi_gquotaip);
729 qi->qi_gquotaip = NULL;
731 if (qi->qi_pquotaip) {
732 IRELE(qi->qi_pquotaip);
733 qi->qi_pquotaip = NULL;
735 mutex_destroy(&qi->qi_quotaofflock);
737 mp->m_quotainfo = NULL;
741 * Create an inode and return with a reference already taken, but unlocked
742 * This is how we create quota inodes
753 bool need_alloc = true;
757 * With superblock that doesn't have separate pquotino, we
758 * share an inode between gquota and pquota. If the on-disk
759 * superblock has GQUOTA and the filesystem is now mounted
760 * with PQUOTA, just use sb_gquotino for sb_pquotino and
763 if (!xfs_sb_version_has_pquotino(&mp->m_sb) &&
764 (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) {
765 xfs_ino_t ino = NULLFSINO;
767 if ((flags & XFS_QMOPT_PQUOTA) &&
768 (mp->m_sb.sb_gquotino != NULLFSINO)) {
769 ino = mp->m_sb.sb_gquotino;
770 ASSERT(mp->m_sb.sb_pquotino == NULLFSINO);
771 } else if ((flags & XFS_QMOPT_GQUOTA) &&
772 (mp->m_sb.sb_pquotino != NULLFSINO)) {
773 ino = mp->m_sb.sb_pquotino;
774 ASSERT(mp->m_sb.sb_gquotino == NULLFSINO);
776 if (ino != NULLFSINO) {
777 error = xfs_iget(mp, NULL, ino, 0, 0, ip);
780 mp->m_sb.sb_gquotino = NULLFSINO;
781 mp->m_sb.sb_pquotino = NULLFSINO;
786 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_create,
787 XFS_QM_QINOCREATE_SPACE_RES(mp), 0, 0, &tp);
792 error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip,
795 xfs_trans_cancel(tp);
801 * Make the changes in the superblock, and log those too.
802 * sbfields arg may contain fields other than *QUOTINO;
803 * VERSIONNUM for example.
805 spin_lock(&mp->m_sb_lock);
806 if (flags & XFS_QMOPT_SBVERSION) {
807 ASSERT(!xfs_sb_version_hasquota(&mp->m_sb));
809 xfs_sb_version_addquota(&mp->m_sb);
810 mp->m_sb.sb_uquotino = NULLFSINO;
811 mp->m_sb.sb_gquotino = NULLFSINO;
812 mp->m_sb.sb_pquotino = NULLFSINO;
814 /* qflags will get updated fully _after_ quotacheck */
815 mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT;
817 if (flags & XFS_QMOPT_UQUOTA)
818 mp->m_sb.sb_uquotino = (*ip)->i_ino;
819 else if (flags & XFS_QMOPT_GQUOTA)
820 mp->m_sb.sb_gquotino = (*ip)->i_ino;
822 mp->m_sb.sb_pquotino = (*ip)->i_ino;
823 spin_unlock(&mp->m_sb_lock);
826 error = xfs_trans_commit(tp);
828 ASSERT(XFS_FORCED_SHUTDOWN(mp));
829 xfs_alert(mp, "%s failed (error %d)!", __func__, error);
832 xfs_finish_inode_setup(*ip);
838 xfs_qm_reset_dqcounts(
844 struct xfs_dqblk *dqb;
847 trace_xfs_reset_dqcounts(bp, _RET_IP_);
850 * Reset all counters and timers. They'll be
851 * started afresh by xfs_qm_quotacheck.
854 j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
855 do_div(j, sizeof(xfs_dqblk_t));
856 ASSERT(mp->m_quotainfo->qi_dqperchunk == j);
859 for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) {
860 struct xfs_disk_dquot *ddq;
862 ddq = (struct xfs_disk_dquot *)&dqb[j];
865 * Do a sanity check, and if needed, repair the dqblk. Don't
866 * output any warnings because it's perfectly possible to
867 * find uninitialised dquot blks. See comment in xfs_dqcheck.
869 xfs_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR,
872 * Reset type in case we are reusing group quota file for
873 * project quotas or vice versa
886 if (xfs_sb_version_hascrc(&mp->m_sb)) {
887 xfs_update_cksum((char *)&dqb[j],
888 sizeof(struct xfs_dqblk),
896 struct xfs_mount *mp,
899 xfs_filblks_t blkcnt,
901 struct list_head *buffer_list)
908 type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER :
909 (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP);
913 * Blkcnt arg can be a very big number, and might even be
914 * larger than the log itself. So, we have to break it up into
915 * manageable-sized transactions.
916 * Note that we don't start a permanent transaction here; we might
917 * not be able to get a log reservation for the whole thing up front,
918 * and we don't really care to either, because we just discard
919 * everything if we were to crash in the middle of this loop.
922 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
923 XFS_FSB_TO_DADDR(mp, bno),
924 mp->m_quotainfo->qi_dqchunklen, 0, &bp,
928 * CRC and validation errors will return a EFSCORRUPTED here. If
929 * this occurs, re-read without CRC validation so that we can
930 * repair the damage via xfs_qm_reset_dqcounts(). This process
931 * will leave a trace in the log indicating corruption has
934 if (error == -EFSCORRUPTED) {
935 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
936 XFS_FSB_TO_DADDR(mp, bno),
937 mp->m_quotainfo->qi_dqchunklen, 0, &bp,
945 * A corrupt buffer might not have a verifier attached, so
946 * make sure we have the correct one attached before writeback
949 bp->b_ops = &xfs_dquot_buf_ops;
950 xfs_qm_reset_dqcounts(mp, bp, firstid, type);
951 xfs_buf_delwri_queue(bp, buffer_list);
954 /* goto the next block. */
956 firstid += mp->m_quotainfo->qi_dqperchunk;
963 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
964 * caller supplied function for every chunk of dquots that we find.
968 struct xfs_mount *mp,
969 struct xfs_inode *qip,
971 struct list_head *buffer_list)
973 struct xfs_bmbt_irec *map;
974 int i, nmaps; /* number of map entries */
975 int error; /* return value */
976 xfs_fileoff_t lblkno;
977 xfs_filblks_t maxlblkcnt;
979 xfs_fsblock_t rablkno;
980 xfs_filblks_t rablkcnt;
984 * This looks racy, but we can't keep an inode lock across a
985 * trans_reserve. But, this gets called during quotacheck, and that
986 * happens only at mount time which is single threaded.
988 if (qip->i_d.di_nblocks == 0)
991 map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP);
994 maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes);
998 nmaps = XFS_DQITER_MAP_SIZE;
1000 * We aren't changing the inode itself. Just changing
1001 * some of its data. No new blocks are added here, and
1002 * the inode is never added to the transaction.
1004 lock_mode = xfs_ilock_data_map_shared(qip);
1005 error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno,
1007 xfs_iunlock(qip, lock_mode);
1011 ASSERT(nmaps <= XFS_DQITER_MAP_SIZE);
1012 for (i = 0; i < nmaps; i++) {
1013 ASSERT(map[i].br_startblock != DELAYSTARTBLOCK);
1014 ASSERT(map[i].br_blockcount);
1017 lblkno += map[i].br_blockcount;
1019 if (map[i].br_startblock == HOLESTARTBLOCK)
1022 firstid = (xfs_dqid_t) map[i].br_startoff *
1023 mp->m_quotainfo->qi_dqperchunk;
1025 * Do a read-ahead on the next extent.
1027 if ((i+1 < nmaps) &&
1028 (map[i+1].br_startblock != HOLESTARTBLOCK)) {
1029 rablkcnt = map[i+1].br_blockcount;
1030 rablkno = map[i+1].br_startblock;
1031 while (rablkcnt--) {
1032 xfs_buf_readahead(mp->m_ddev_targp,
1033 XFS_FSB_TO_DADDR(mp, rablkno),
1034 mp->m_quotainfo->qi_dqchunklen,
1035 &xfs_dquot_buf_ops);
1040 * Iterate thru all the blks in the extent and
1041 * reset the counters of all the dquots inside them.
1043 error = xfs_qm_dqiter_bufs(mp, firstid,
1044 map[i].br_startblock,
1045 map[i].br_blockcount,
1046 flags, buffer_list);
1050 } while (nmaps > 0);
1058 * Called by dqusage_adjust in doing a quotacheck.
1060 * Given the inode, and a dquot id this updates both the incore dqout as well
1061 * as the buffer copy. This is so that once the quotacheck is done, we can
1062 * just log all the buffers, as opposed to logging numerous updates to
1063 * individual dquots.
1066 xfs_qm_quotacheck_dqadjust(
1067 struct xfs_inode *ip,
1073 struct xfs_mount *mp = ip->i_mount;
1074 struct xfs_dquot *dqp;
1077 error = xfs_qm_dqget(mp, ip, id, type,
1078 XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp);
1081 * Shouldn't be able to turn off quotas here.
1083 ASSERT(error != -ESRCH);
1084 ASSERT(error != -ENOENT);
1088 trace_xfs_dqadjust(dqp);
1091 * Adjust the inode count and the block count to reflect this inode's
1094 be64_add_cpu(&dqp->q_core.d_icount, 1);
1095 dqp->q_res_icount++;
1097 be64_add_cpu(&dqp->q_core.d_bcount, nblks);
1098 dqp->q_res_bcount += nblks;
1101 be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks);
1102 dqp->q_res_rtbcount += rtblks;
1106 * Set default limits, adjust timers (since we changed usages)
1108 * There are no timers for the default values set in the root dquot.
1110 if (dqp->q_core.d_id) {
1111 xfs_qm_adjust_dqlimits(mp, dqp);
1112 xfs_qm_adjust_dqtimers(mp, &dqp->q_core);
1115 dqp->dq_flags |= XFS_DQ_DIRTY;
1123 xfs_qcnt_t *O_rtblks)
1125 xfs_filblks_t rtblks; /* total rt blks */
1126 xfs_extnum_t idx; /* extent record index */
1127 xfs_ifork_t *ifp; /* inode fork pointer */
1128 xfs_extnum_t nextents; /* number of extent entries */
1131 ASSERT(XFS_IS_REALTIME_INODE(ip));
1132 ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
1133 if (!(ifp->if_flags & XFS_IFEXTENTS)) {
1134 if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK)))
1138 nextents = xfs_iext_count(ifp);
1139 for (idx = 0; idx < nextents; idx++)
1140 rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx));
1141 *O_rtblks = (xfs_qcnt_t)rtblks;
1146 * callback routine supplied to bulkstat(). Given an inumber, find its
1147 * dquots and update them to account for resources taken by that inode.
1151 xfs_qm_dqusage_adjust(
1152 xfs_mount_t *mp, /* mount point for filesystem */
1153 xfs_ino_t ino, /* inode number to get data for */
1154 void __user *buffer, /* not used */
1155 int ubsize, /* not used */
1156 int *ubused, /* not used */
1157 int *res) /* result code value */
1160 xfs_qcnt_t nblks, rtblks = 0;
1163 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1166 * rootino must have its resources accounted for, not so with the quota
1169 if (xfs_is_quota_inode(&mp->m_sb, ino)) {
1170 *res = BULKSTAT_RV_NOTHING;
1175 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1176 * interface expects the inode to be exclusively locked because that's
1177 * the case in all other instances. It's OK that we do this because
1178 * quotacheck is done only at mount time.
1180 error = xfs_iget(mp, NULL, ino, XFS_IGET_DONTCACHE, XFS_ILOCK_EXCL,
1183 *res = BULKSTAT_RV_NOTHING;
1187 ASSERT(ip->i_delayed_blks == 0);
1189 if (XFS_IS_REALTIME_INODE(ip)) {
1191 * Walk thru the extent list and count the realtime blocks.
1193 error = xfs_qm_get_rtblks(ip, &rtblks);
1198 nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks;
1201 * Add the (disk blocks and inode) resources occupied by this
1202 * inode to its dquots. We do this adjustment in the incore dquot,
1203 * and also copy the changes to its buffer.
1204 * We don't care about putting these changes in a transaction
1205 * envelope because if we crash in the middle of a 'quotacheck'
1206 * we have to start from the beginning anyway.
1207 * Once we're done, we'll log all the dquot bufs.
1209 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1210 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1212 if (XFS_IS_UQUOTA_ON(mp)) {
1213 error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid,
1214 XFS_DQ_USER, nblks, rtblks);
1219 if (XFS_IS_GQUOTA_ON(mp)) {
1220 error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid,
1221 XFS_DQ_GROUP, nblks, rtblks);
1226 if (XFS_IS_PQUOTA_ON(mp)) {
1227 error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip),
1228 XFS_DQ_PROJ, nblks, rtblks);
1233 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1235 *res = BULKSTAT_RV_DIDONE;
1239 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1241 *res = BULKSTAT_RV_GIVEUP;
1247 struct xfs_dquot *dqp,
1250 struct list_head *buffer_list = data;
1251 struct xfs_buf *bp = NULL;
1255 if (dqp->dq_flags & XFS_DQ_FREEING)
1257 if (!XFS_DQ_IS_DIRTY(dqp))
1261 error = xfs_qm_dqflush(dqp, &bp);
1265 xfs_buf_delwri_queue(bp, buffer_list);
1273 * Walk thru all the filesystem inodes and construct a consistent view
1274 * of the disk quota world. If the quotacheck fails, disable quotas.
1280 int done, count, error, error2;
1284 LIST_HEAD (buffer_list);
1285 struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip;
1286 struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip;
1287 struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip;
1294 ASSERT(uip || gip || pip);
1295 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1297 xfs_notice(mp, "Quotacheck needed: Please wait.");
1300 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1301 * their counters to zero. We need a clean slate.
1302 * We don't log our changes till later.
1305 error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA,
1309 flags |= XFS_UQUOTA_CHKD;
1313 error = xfs_qm_dqiterate(mp, gip, XFS_QMOPT_GQUOTA,
1317 flags |= XFS_GQUOTA_CHKD;
1321 error = xfs_qm_dqiterate(mp, pip, XFS_QMOPT_PQUOTA,
1325 flags |= XFS_PQUOTA_CHKD;
1330 * Iterate thru all the inodes in the file system,
1331 * adjusting the corresponding dquot counters in core.
1333 error = xfs_bulkstat(mp, &lastino, &count,
1334 xfs_qm_dqusage_adjust,
1335 structsz, NULL, &done);
1342 * We've made all the changes that we need to make incore. Flush them
1343 * down to disk buffers if everything was updated successfully.
1345 if (XFS_IS_UQUOTA_ON(mp)) {
1346 error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one,
1349 if (XFS_IS_GQUOTA_ON(mp)) {
1350 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one,
1355 if (XFS_IS_PQUOTA_ON(mp)) {
1356 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one,
1362 error2 = xfs_buf_delwri_submit(&buffer_list);
1367 * We can get this error if we couldn't do a dquot allocation inside
1368 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1369 * dirty dquots that might be cached, we just want to get rid of them
1370 * and turn quotaoff. The dquots won't be attached to any of the inodes
1371 * at this point (because we intentionally didn't in dqget_noattach).
1374 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL);
1379 * If one type of quotas is off, then it will lose its
1380 * quotachecked status, since we won't be doing accounting for
1381 * that type anymore.
1383 mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD;
1384 mp->m_qflags |= flags;
1387 while (!list_empty(&buffer_list)) {
1388 struct xfs_buf *bp =
1389 list_first_entry(&buffer_list, struct xfs_buf, b_list);
1390 list_del_init(&bp->b_list);
1396 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1399 * We must turn off quotas.
1401 ASSERT(mp->m_quotainfo != NULL);
1402 xfs_qm_destroy_quotainfo(mp);
1403 if (xfs_mount_reset_sbqflags(mp)) {
1405 "Quotacheck: Failed to reset quota flags.");
1408 xfs_notice(mp, "Quotacheck: Done.");
1413 * This is called from xfs_mountfs to start quotas and initialize all
1414 * necessary data structures like quotainfo. This is also responsible for
1415 * running a quotacheck as necessary. We are guaranteed that the superblock
1416 * is consistently read in at this point.
1418 * If we fail here, the mount will continue with quota turned off. We don't
1419 * need to inidicate success or failure at all.
1422 xfs_qm_mount_quotas(
1423 struct xfs_mount *mp)
1429 * If quotas on realtime volumes is not supported, we disable
1430 * quotas immediately.
1432 if (mp->m_sb.sb_rextents) {
1433 xfs_notice(mp, "Cannot turn on quotas for realtime filesystem");
1438 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1441 * Allocate the quotainfo structure inside the mount struct, and
1442 * create quotainode(s), and change/rev superblock if necessary.
1444 error = xfs_qm_init_quotainfo(mp);
1447 * We must turn off quotas.
1449 ASSERT(mp->m_quotainfo == NULL);
1454 * If any of the quotas are not consistent, do a quotacheck.
1456 if (XFS_QM_NEED_QUOTACHECK(mp)) {
1457 error = xfs_qm_quotacheck(mp);
1459 /* Quotacheck failed and disabled quotas. */
1464 * If one type of quotas is off, then it will lose its
1465 * quotachecked status, since we won't be doing accounting for
1466 * that type anymore.
1468 if (!XFS_IS_UQUOTA_ON(mp))
1469 mp->m_qflags &= ~XFS_UQUOTA_CHKD;
1470 if (!XFS_IS_GQUOTA_ON(mp))
1471 mp->m_qflags &= ~XFS_GQUOTA_CHKD;
1472 if (!XFS_IS_PQUOTA_ON(mp))
1473 mp->m_qflags &= ~XFS_PQUOTA_CHKD;
1477 * We actually don't have to acquire the m_sb_lock at all.
1478 * This can only be called from mount, and that's single threaded. XXX
1480 spin_lock(&mp->m_sb_lock);
1481 sbf = mp->m_sb.sb_qflags;
1482 mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL;
1483 spin_unlock(&mp->m_sb_lock);
1485 if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) {
1486 if (xfs_sync_sb(mp, false)) {
1488 * We could only have been turning quotas off.
1489 * We aren't in very good shape actually because
1490 * the incore structures are convinced that quotas are
1491 * off, but the on disk superblock doesn't know that !
1493 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp)));
1494 xfs_alert(mp, "%s: Superblock update failed!",
1500 xfs_warn(mp, "Failed to initialize disk quotas.");
1506 * This is called after the superblock has been read in and we're ready to
1507 * iget the quota inodes.
1510 xfs_qm_init_quotainos(
1513 struct xfs_inode *uip = NULL;
1514 struct xfs_inode *gip = NULL;
1515 struct xfs_inode *pip = NULL;
1519 ASSERT(mp->m_quotainfo);
1522 * Get the uquota and gquota inodes
1524 if (xfs_sb_version_hasquota(&mp->m_sb)) {
1525 if (XFS_IS_UQUOTA_ON(mp) &&
1526 mp->m_sb.sb_uquotino != NULLFSINO) {
1527 ASSERT(mp->m_sb.sb_uquotino > 0);
1528 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
1533 if (XFS_IS_GQUOTA_ON(mp) &&
1534 mp->m_sb.sb_gquotino != NULLFSINO) {
1535 ASSERT(mp->m_sb.sb_gquotino > 0);
1536 error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
1541 if (XFS_IS_PQUOTA_ON(mp) &&
1542 mp->m_sb.sb_pquotino != NULLFSINO) {
1543 ASSERT(mp->m_sb.sb_pquotino > 0);
1544 error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
1550 flags |= XFS_QMOPT_SBVERSION;
1554 * Create the three inodes, if they don't exist already. The changes
1555 * made above will get added to a transaction and logged in one of
1556 * the qino_alloc calls below. If the device is readonly,
1557 * temporarily switch to read-write to do this.
1559 if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) {
1560 error = xfs_qm_qino_alloc(mp, &uip,
1561 flags | XFS_QMOPT_UQUOTA);
1565 flags &= ~XFS_QMOPT_SBVERSION;
1567 if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) {
1568 error = xfs_qm_qino_alloc(mp, &gip,
1569 flags | XFS_QMOPT_GQUOTA);
1573 flags &= ~XFS_QMOPT_SBVERSION;
1575 if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) {
1576 error = xfs_qm_qino_alloc(mp, &pip,
1577 flags | XFS_QMOPT_PQUOTA);
1582 mp->m_quotainfo->qi_uquotaip = uip;
1583 mp->m_quotainfo->qi_gquotaip = gip;
1584 mp->m_quotainfo->qi_pquotaip = pip;
1600 struct xfs_dquot *dqp)
1602 struct xfs_mount *mp = dqp->q_mount;
1603 struct xfs_quotainfo *qi = mp->m_quotainfo;
1605 mutex_lock(&qi->qi_tree_lock);
1606 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags),
1607 be32_to_cpu(dqp->q_core.d_id));
1610 mutex_unlock(&qi->qi_tree_lock);
1612 xfs_qm_dqdestroy(dqp);
1615 /* --------------- utility functions for vnodeops ---------------- */
1619 * Given an inode, a uid, gid and prid make sure that we have
1620 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1621 * quotas by creating this file.
1622 * This also attaches dquot(s) to the given inode after locking it,
1623 * and returns the dquots corresponding to the uid and/or gid.
1625 * in : inode (unlocked)
1626 * out : udquot, gdquot with references taken and unlocked
1630 struct xfs_inode *ip,
1635 struct xfs_dquot **O_udqpp,
1636 struct xfs_dquot **O_gdqpp,
1637 struct xfs_dquot **O_pdqpp)
1639 struct xfs_mount *mp = ip->i_mount;
1640 struct xfs_dquot *uq = NULL;
1641 struct xfs_dquot *gq = NULL;
1642 struct xfs_dquot *pq = NULL;
1646 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1649 lockflags = XFS_ILOCK_EXCL;
1650 xfs_ilock(ip, lockflags);
1652 if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip))
1653 gid = ip->i_d.di_gid;
1656 * Attach the dquot(s) to this inode, doing a dquot allocation
1657 * if necessary. The dquot(s) will not be locked.
1659 if (XFS_NOT_DQATTACHED(mp, ip)) {
1660 error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC);
1662 xfs_iunlock(ip, lockflags);
1667 if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) {
1668 if (ip->i_d.di_uid != uid) {
1670 * What we need is the dquot that has this uid, and
1671 * if we send the inode to dqget, the uid of the inode
1672 * takes priority over what's sent in the uid argument.
1673 * We must unlock inode here before calling dqget if
1674 * we're not sending the inode, because otherwise
1675 * we'll deadlock by doing trans_reserve while
1678 xfs_iunlock(ip, lockflags);
1679 error = xfs_qm_dqget(mp, NULL, uid,
1685 ASSERT(error != -ENOENT);
1689 * Get the ilock in the right order.
1692 lockflags = XFS_ILOCK_SHARED;
1693 xfs_ilock(ip, lockflags);
1696 * Take an extra reference, because we'll return
1699 ASSERT(ip->i_udquot);
1700 uq = xfs_qm_dqhold(ip->i_udquot);
1703 if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) {
1704 if (ip->i_d.di_gid != gid) {
1705 xfs_iunlock(ip, lockflags);
1706 error = xfs_qm_dqget(mp, NULL, gid,
1712 ASSERT(error != -ENOENT);
1716 lockflags = XFS_ILOCK_SHARED;
1717 xfs_ilock(ip, lockflags);
1719 ASSERT(ip->i_gdquot);
1720 gq = xfs_qm_dqhold(ip->i_gdquot);
1723 if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) {
1724 if (xfs_get_projid(ip) != prid) {
1725 xfs_iunlock(ip, lockflags);
1726 error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid,
1732 ASSERT(error != -ENOENT);
1736 lockflags = XFS_ILOCK_SHARED;
1737 xfs_ilock(ip, lockflags);
1739 ASSERT(ip->i_pdquot);
1740 pq = xfs_qm_dqhold(ip->i_pdquot);
1744 trace_xfs_dquot_dqalloc(ip);
1746 xfs_iunlock(ip, lockflags);
1768 * Actually transfer ownership, and do dquot modifications.
1769 * These were already reserved.
1775 xfs_dquot_t **IO_olddq,
1778 xfs_dquot_t *prevdq;
1779 uint bfield = XFS_IS_REALTIME_INODE(ip) ?
1780 XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT;
1783 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
1784 ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount));
1789 ASSERT(prevdq != newdq);
1791 xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks));
1792 xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1);
1794 /* the sparkling new dquot */
1795 xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks);
1796 xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1);
1799 * Take an extra reference, because the inode is going to keep
1800 * this dquot pointer even after the trans_commit.
1802 *IO_olddq = xfs_qm_dqhold(newdq);
1808 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1811 xfs_qm_vop_chown_reserve(
1812 struct xfs_trans *tp,
1813 struct xfs_inode *ip,
1814 struct xfs_dquot *udqp,
1815 struct xfs_dquot *gdqp,
1816 struct xfs_dquot *pdqp,
1819 struct xfs_mount *mp = ip->i_mount;
1820 uint delblks, blkflags, prjflags = 0;
1821 struct xfs_dquot *udq_unres = NULL;
1822 struct xfs_dquot *gdq_unres = NULL;
1823 struct xfs_dquot *pdq_unres = NULL;
1824 struct xfs_dquot *udq_delblks = NULL;
1825 struct xfs_dquot *gdq_delblks = NULL;
1826 struct xfs_dquot *pdq_delblks = NULL;
1830 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
1831 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1833 delblks = ip->i_delayed_blks;
1834 blkflags = XFS_IS_REALTIME_INODE(ip) ?
1835 XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS;
1837 if (XFS_IS_UQUOTA_ON(mp) && udqp &&
1838 ip->i_d.di_uid != be32_to_cpu(udqp->q_core.d_id)) {
1841 * If there are delayed allocation blocks, then we have to
1842 * unreserve those from the old dquot, and add them to the
1846 ASSERT(ip->i_udquot);
1847 udq_unres = ip->i_udquot;
1850 if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp &&
1851 ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id)) {
1854 ASSERT(ip->i_gdquot);
1855 gdq_unres = ip->i_gdquot;
1859 if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp &&
1860 xfs_get_projid(ip) != be32_to_cpu(pdqp->q_core.d_id)) {
1861 prjflags = XFS_QMOPT_ENOSPC;
1864 ASSERT(ip->i_pdquot);
1865 pdq_unres = ip->i_pdquot;
1869 error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount,
1870 udq_delblks, gdq_delblks, pdq_delblks,
1871 ip->i_d.di_nblocks, 1,
1872 flags | blkflags | prjflags);
1877 * Do the delayed blks reservations/unreservations now. Since, these
1878 * are done without the help of a transaction, if a reservation fails
1879 * its previous reservations won't be automatically undone by trans
1880 * code. So, we have to do it manually here.
1884 * Do the reservations first. Unreservation can't fail.
1886 ASSERT(udq_delblks || gdq_delblks || pdq_delblks);
1887 ASSERT(udq_unres || gdq_unres || pdq_unres);
1888 error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
1889 udq_delblks, gdq_delblks, pdq_delblks,
1890 (xfs_qcnt_t)delblks, 0,
1891 flags | blkflags | prjflags);
1894 xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
1895 udq_unres, gdq_unres, pdq_unres,
1896 -((xfs_qcnt_t)delblks), 0, blkflags);
1903 xfs_qm_vop_rename_dqattach(
1904 struct xfs_inode **i_tab)
1906 struct xfs_mount *mp = i_tab[0]->i_mount;
1909 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1912 for (i = 0; (i < 4 && i_tab[i]); i++) {
1913 struct xfs_inode *ip = i_tab[i];
1917 * Watch out for duplicate entries in the table.
1919 if (i == 0 || ip != i_tab[i-1]) {
1920 if (XFS_NOT_DQATTACHED(mp, ip)) {
1921 error = xfs_qm_dqattach(ip, 0);
1931 xfs_qm_vop_create_dqattach(
1932 struct xfs_trans *tp,
1933 struct xfs_inode *ip,
1934 struct xfs_dquot *udqp,
1935 struct xfs_dquot *gdqp,
1936 struct xfs_dquot *pdqp)
1938 struct xfs_mount *mp = tp->t_mountp;
1940 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1943 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
1944 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1946 if (udqp && XFS_IS_UQUOTA_ON(mp)) {
1947 ASSERT(ip->i_udquot == NULL);
1948 ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id));
1950 ip->i_udquot = xfs_qm_dqhold(udqp);
1951 xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1);
1953 if (gdqp && XFS_IS_GQUOTA_ON(mp)) {
1954 ASSERT(ip->i_gdquot == NULL);
1955 ASSERT(ip->i_d.di_gid == be32_to_cpu(gdqp->q_core.d_id));
1956 ip->i_gdquot = xfs_qm_dqhold(gdqp);
1957 xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1);
1959 if (pdqp && XFS_IS_PQUOTA_ON(mp)) {
1960 ASSERT(ip->i_pdquot == NULL);
1961 ASSERT(xfs_get_projid(ip) == be32_to_cpu(pdqp->q_core.d_id));
1963 ip->i_pdquot = xfs_qm_dqhold(pdqp);
1964 xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1);