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(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(xs_qm_dqwants);
453 trace_xfs_dqreclaim_want(dqp);
454 list_lru_isolate(lru, &dqp->q_lru);
455 XFS_STATS_DEC(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(xs_qm_dquot_unused);
500 trace_xfs_dqreclaim_done(dqp);
501 XFS_STATS_INC(xs_qm_dqreclaims);
505 trace_xfs_dqreclaim_busy(dqp);
506 XFS_STATS_INC(xs_qm_dqreclaim_misses);
510 trace_xfs_dqreclaim_busy(dqp);
511 XFS_STATS_INC(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_WAIT)) != (__GFP_FS|__GFP_WAIT))
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);
564 * This initializes all the quota information that's kept in the
568 xfs_qm_init_quotainfo(
571 xfs_quotainfo_t *qinf;
575 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
577 qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP);
579 error = list_lru_init(&qinf->qi_lru);
584 * See if quotainodes are setup, and if not, allocate them,
585 * and change the superblock accordingly.
587 error = xfs_qm_init_quotainos(mp);
591 INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS);
592 INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS);
593 INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS);
594 mutex_init(&qinf->qi_tree_lock);
596 /* mutex used to serialize quotaoffs */
597 mutex_init(&qinf->qi_quotaofflock);
599 /* Precalc some constants */
600 qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
601 qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(qinf->qi_dqchunklen);
603 mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD);
606 * We try to get the limits from the superuser's limits fields.
607 * This is quite hacky, but it is standard quota practice.
609 * We look at the USR dquot with id == 0 first, but if user quotas
610 * are not enabled we goto the GRP dquot with id == 0.
611 * We don't really care to keep separate default limits for user
612 * and group quotas, at least not at this point.
614 * Since we may not have done a quotacheck by this point, just read
615 * the dquot without attaching it to any hashtables or lists.
617 error = xfs_qm_dqread(mp, 0,
618 XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER :
619 (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP :
621 XFS_QMOPT_DOWARN, &dqp);
623 xfs_disk_dquot_t *ddqp = &dqp->q_core;
626 * The warnings and timers set the grace period given to
627 * a user or group before he or she can not perform any
628 * more writing. If it is zero, a default is used.
630 qinf->qi_btimelimit = ddqp->d_btimer ?
631 be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT;
632 qinf->qi_itimelimit = ddqp->d_itimer ?
633 be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT;
634 qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ?
635 be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT;
636 qinf->qi_bwarnlimit = ddqp->d_bwarns ?
637 be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT;
638 qinf->qi_iwarnlimit = ddqp->d_iwarns ?
639 be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT;
640 qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ?
641 be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT;
642 qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit);
643 qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit);
644 qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit);
645 qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit);
646 qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit);
647 qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit);
649 xfs_qm_dqdestroy(dqp);
651 qinf->qi_btimelimit = XFS_QM_BTIMELIMIT;
652 qinf->qi_itimelimit = XFS_QM_ITIMELIMIT;
653 qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT;
654 qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT;
655 qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT;
656 qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT;
659 qinf->qi_shrinker.count_objects = xfs_qm_shrink_count;
660 qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan;
661 qinf->qi_shrinker.seeks = DEFAULT_SEEKS;
662 qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE;
663 register_shrinker(&qinf->qi_shrinker);
667 list_lru_destroy(&qinf->qi_lru);
670 mp->m_quotainfo = NULL;
676 * Gets called when unmounting a filesystem or when all quotas get
678 * This purges the quota inodes, destroys locks and frees itself.
681 xfs_qm_destroy_quotainfo(
686 qi = mp->m_quotainfo;
689 unregister_shrinker(&qi->qi_shrinker);
690 list_lru_destroy(&qi->qi_lru);
692 if (qi->qi_uquotaip) {
693 IRELE(qi->qi_uquotaip);
694 qi->qi_uquotaip = NULL; /* paranoia */
696 if (qi->qi_gquotaip) {
697 IRELE(qi->qi_gquotaip);
698 qi->qi_gquotaip = NULL;
700 if (qi->qi_pquotaip) {
701 IRELE(qi->qi_pquotaip);
702 qi->qi_pquotaip = NULL;
704 mutex_destroy(&qi->qi_quotaofflock);
706 mp->m_quotainfo = NULL;
710 * Create an inode and return with a reference already taken, but unlocked
711 * This is how we create quota inodes
722 bool need_alloc = true;
726 * With superblock that doesn't have separate pquotino, we
727 * share an inode between gquota and pquota. If the on-disk
728 * superblock has GQUOTA and the filesystem is now mounted
729 * with PQUOTA, just use sb_gquotino for sb_pquotino and
732 if (!xfs_sb_version_has_pquotino(&mp->m_sb) &&
733 (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) {
734 xfs_ino_t ino = NULLFSINO;
736 if ((flags & XFS_QMOPT_PQUOTA) &&
737 (mp->m_sb.sb_gquotino != NULLFSINO)) {
738 ino = mp->m_sb.sb_gquotino;
739 ASSERT(mp->m_sb.sb_pquotino == NULLFSINO);
740 } else if ((flags & XFS_QMOPT_GQUOTA) &&
741 (mp->m_sb.sb_pquotino != NULLFSINO)) {
742 ino = mp->m_sb.sb_pquotino;
743 ASSERT(mp->m_sb.sb_gquotino == NULLFSINO);
745 if (ino != NULLFSINO) {
746 error = xfs_iget(mp, NULL, ino, 0, 0, ip);
749 mp->m_sb.sb_gquotino = NULLFSINO;
750 mp->m_sb.sb_pquotino = NULLFSINO;
755 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE);
756 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_create,
757 XFS_QM_QINOCREATE_SPACE_RES(mp), 0);
759 xfs_trans_cancel(tp, 0);
764 error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip,
767 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
774 * Make the changes in the superblock, and log those too.
775 * sbfields arg may contain fields other than *QUOTINO;
776 * VERSIONNUM for example.
778 spin_lock(&mp->m_sb_lock);
779 if (flags & XFS_QMOPT_SBVERSION) {
780 ASSERT(!xfs_sb_version_hasquota(&mp->m_sb));
782 xfs_sb_version_addquota(&mp->m_sb);
783 mp->m_sb.sb_uquotino = NULLFSINO;
784 mp->m_sb.sb_gquotino = NULLFSINO;
785 mp->m_sb.sb_pquotino = NULLFSINO;
787 /* qflags will get updated fully _after_ quotacheck */
788 mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT;
790 if (flags & XFS_QMOPT_UQUOTA)
791 mp->m_sb.sb_uquotino = (*ip)->i_ino;
792 else if (flags & XFS_QMOPT_GQUOTA)
793 mp->m_sb.sb_gquotino = (*ip)->i_ino;
795 mp->m_sb.sb_pquotino = (*ip)->i_ino;
796 spin_unlock(&mp->m_sb_lock);
799 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
801 ASSERT(XFS_FORCED_SHUTDOWN(mp));
802 xfs_alert(mp, "%s failed (error %d)!", __func__, error);
805 xfs_finish_inode_setup(*ip);
811 xfs_qm_reset_dqcounts(
817 struct xfs_dqblk *dqb;
820 trace_xfs_reset_dqcounts(bp, _RET_IP_);
823 * Reset all counters and timers. They'll be
824 * started afresh by xfs_qm_quotacheck.
827 j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
828 do_div(j, sizeof(xfs_dqblk_t));
829 ASSERT(mp->m_quotainfo->qi_dqperchunk == j);
832 for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) {
833 struct xfs_disk_dquot *ddq;
835 ddq = (struct xfs_disk_dquot *)&dqb[j];
838 * Do a sanity check, and if needed, repair the dqblk. Don't
839 * output any warnings because it's perfectly possible to
840 * find uninitialised dquot blks. See comment in xfs_dqcheck.
842 xfs_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR,
845 * Reset type in case we are reusing group quota file for
846 * project quotas or vice versa
859 if (xfs_sb_version_hascrc(&mp->m_sb)) {
860 xfs_update_cksum((char *)&dqb[j],
861 sizeof(struct xfs_dqblk),
869 struct xfs_mount *mp,
872 xfs_filblks_t blkcnt,
874 struct list_head *buffer_list)
881 type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER :
882 (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP);
886 * Blkcnt arg can be a very big number, and might even be
887 * larger than the log itself. So, we have to break it up into
888 * manageable-sized transactions.
889 * Note that we don't start a permanent transaction here; we might
890 * not be able to get a log reservation for the whole thing up front,
891 * and we don't really care to either, because we just discard
892 * everything if we were to crash in the middle of this loop.
895 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
896 XFS_FSB_TO_DADDR(mp, bno),
897 mp->m_quotainfo->qi_dqchunklen, 0, &bp,
901 * CRC and validation errors will return a EFSCORRUPTED here. If
902 * this occurs, re-read without CRC validation so that we can
903 * repair the damage via xfs_qm_reset_dqcounts(). This process
904 * will leave a trace in the log indicating corruption has
907 if (error == -EFSCORRUPTED) {
908 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
909 XFS_FSB_TO_DADDR(mp, bno),
910 mp->m_quotainfo->qi_dqchunklen, 0, &bp,
918 * A corrupt buffer might not have a verifier attached, so
919 * make sure we have the correct one attached before writeback
922 bp->b_ops = &xfs_dquot_buf_ops;
923 xfs_qm_reset_dqcounts(mp, bp, firstid, type);
924 xfs_buf_delwri_queue(bp, buffer_list);
927 /* goto the next block. */
929 firstid += mp->m_quotainfo->qi_dqperchunk;
936 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
937 * caller supplied function for every chunk of dquots that we find.
941 struct xfs_mount *mp,
942 struct xfs_inode *qip,
944 struct list_head *buffer_list)
946 struct xfs_bmbt_irec *map;
947 int i, nmaps; /* number of map entries */
948 int error; /* return value */
949 xfs_fileoff_t lblkno;
950 xfs_filblks_t maxlblkcnt;
952 xfs_fsblock_t rablkno;
953 xfs_filblks_t rablkcnt;
957 * This looks racy, but we can't keep an inode lock across a
958 * trans_reserve. But, this gets called during quotacheck, and that
959 * happens only at mount time which is single threaded.
961 if (qip->i_d.di_nblocks == 0)
964 map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP);
967 maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes);
971 nmaps = XFS_DQITER_MAP_SIZE;
973 * We aren't changing the inode itself. Just changing
974 * some of its data. No new blocks are added here, and
975 * the inode is never added to the transaction.
977 lock_mode = xfs_ilock_data_map_shared(qip);
978 error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno,
980 xfs_iunlock(qip, lock_mode);
984 ASSERT(nmaps <= XFS_DQITER_MAP_SIZE);
985 for (i = 0; i < nmaps; i++) {
986 ASSERT(map[i].br_startblock != DELAYSTARTBLOCK);
987 ASSERT(map[i].br_blockcount);
990 lblkno += map[i].br_blockcount;
992 if (map[i].br_startblock == HOLESTARTBLOCK)
995 firstid = (xfs_dqid_t) map[i].br_startoff *
996 mp->m_quotainfo->qi_dqperchunk;
998 * Do a read-ahead on the next extent.
1000 if ((i+1 < nmaps) &&
1001 (map[i+1].br_startblock != HOLESTARTBLOCK)) {
1002 rablkcnt = map[i+1].br_blockcount;
1003 rablkno = map[i+1].br_startblock;
1004 while (rablkcnt--) {
1005 xfs_buf_readahead(mp->m_ddev_targp,
1006 XFS_FSB_TO_DADDR(mp, rablkno),
1007 mp->m_quotainfo->qi_dqchunklen,
1008 &xfs_dquot_buf_ops);
1013 * Iterate thru all the blks in the extent and
1014 * reset the counters of all the dquots inside them.
1016 error = xfs_qm_dqiter_bufs(mp, firstid,
1017 map[i].br_startblock,
1018 map[i].br_blockcount,
1019 flags, buffer_list);
1023 } while (nmaps > 0);
1031 * Called by dqusage_adjust in doing a quotacheck.
1033 * Given the inode, and a dquot id this updates both the incore dqout as well
1034 * as the buffer copy. This is so that once the quotacheck is done, we can
1035 * just log all the buffers, as opposed to logging numerous updates to
1036 * individual dquots.
1039 xfs_qm_quotacheck_dqadjust(
1040 struct xfs_inode *ip,
1046 struct xfs_mount *mp = ip->i_mount;
1047 struct xfs_dquot *dqp;
1050 error = xfs_qm_dqget(mp, ip, id, type,
1051 XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp);
1054 * Shouldn't be able to turn off quotas here.
1056 ASSERT(error != -ESRCH);
1057 ASSERT(error != -ENOENT);
1061 trace_xfs_dqadjust(dqp);
1064 * Adjust the inode count and the block count to reflect this inode's
1067 be64_add_cpu(&dqp->q_core.d_icount, 1);
1068 dqp->q_res_icount++;
1070 be64_add_cpu(&dqp->q_core.d_bcount, nblks);
1071 dqp->q_res_bcount += nblks;
1074 be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks);
1075 dqp->q_res_rtbcount += rtblks;
1079 * Set default limits, adjust timers (since we changed usages)
1081 * There are no timers for the default values set in the root dquot.
1083 if (dqp->q_core.d_id) {
1084 xfs_qm_adjust_dqlimits(mp, dqp);
1085 xfs_qm_adjust_dqtimers(mp, &dqp->q_core);
1088 dqp->dq_flags |= XFS_DQ_DIRTY;
1096 xfs_qcnt_t *O_rtblks)
1098 xfs_filblks_t rtblks; /* total rt blks */
1099 xfs_extnum_t idx; /* extent record index */
1100 xfs_ifork_t *ifp; /* inode fork pointer */
1101 xfs_extnum_t nextents; /* number of extent entries */
1104 ASSERT(XFS_IS_REALTIME_INODE(ip));
1105 ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
1106 if (!(ifp->if_flags & XFS_IFEXTENTS)) {
1107 if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK)))
1111 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
1112 for (idx = 0; idx < nextents; idx++)
1113 rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx));
1114 *O_rtblks = (xfs_qcnt_t)rtblks;
1119 * callback routine supplied to bulkstat(). Given an inumber, find its
1120 * dquots and update them to account for resources taken by that inode.
1124 xfs_qm_dqusage_adjust(
1125 xfs_mount_t *mp, /* mount point for filesystem */
1126 xfs_ino_t ino, /* inode number to get data for */
1127 void __user *buffer, /* not used */
1128 int ubsize, /* not used */
1129 int *ubused, /* not used */
1130 int *res) /* result code value */
1133 xfs_qcnt_t nblks, rtblks = 0;
1136 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1139 * rootino must have its resources accounted for, not so with the quota
1142 if (xfs_is_quota_inode(&mp->m_sb, ino)) {
1143 *res = BULKSTAT_RV_NOTHING;
1148 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1149 * interface expects the inode to be exclusively locked because that's
1150 * the case in all other instances. It's OK that we do this because
1151 * quotacheck is done only at mount time.
1153 error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip);
1155 *res = BULKSTAT_RV_NOTHING;
1159 ASSERT(ip->i_delayed_blks == 0);
1161 if (XFS_IS_REALTIME_INODE(ip)) {
1163 * Walk thru the extent list and count the realtime blocks.
1165 error = xfs_qm_get_rtblks(ip, &rtblks);
1170 nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks;
1173 * Add the (disk blocks and inode) resources occupied by this
1174 * inode to its dquots. We do this adjustment in the incore dquot,
1175 * and also copy the changes to its buffer.
1176 * We don't care about putting these changes in a transaction
1177 * envelope because if we crash in the middle of a 'quotacheck'
1178 * we have to start from the beginning anyway.
1179 * Once we're done, we'll log all the dquot bufs.
1181 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1182 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1184 if (XFS_IS_UQUOTA_ON(mp)) {
1185 error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid,
1186 XFS_DQ_USER, nblks, rtblks);
1191 if (XFS_IS_GQUOTA_ON(mp)) {
1192 error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid,
1193 XFS_DQ_GROUP, nblks, rtblks);
1198 if (XFS_IS_PQUOTA_ON(mp)) {
1199 error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip),
1200 XFS_DQ_PROJ, nblks, rtblks);
1205 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1207 *res = BULKSTAT_RV_DIDONE;
1211 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1213 *res = BULKSTAT_RV_GIVEUP;
1219 struct xfs_dquot *dqp,
1222 struct list_head *buffer_list = data;
1223 struct xfs_buf *bp = NULL;
1227 if (dqp->dq_flags & XFS_DQ_FREEING)
1229 if (!XFS_DQ_IS_DIRTY(dqp))
1233 error = xfs_qm_dqflush(dqp, &bp);
1237 xfs_buf_delwri_queue(bp, buffer_list);
1245 * Walk thru all the filesystem inodes and construct a consistent view
1246 * of the disk quota world. If the quotacheck fails, disable quotas.
1252 int done, count, error, error2;
1256 LIST_HEAD (buffer_list);
1257 struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip;
1258 struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip;
1259 struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip;
1266 ASSERT(uip || gip || pip);
1267 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1269 xfs_notice(mp, "Quotacheck needed: Please wait.");
1272 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1273 * their counters to zero. We need a clean slate.
1274 * We don't log our changes till later.
1277 error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA,
1281 flags |= XFS_UQUOTA_CHKD;
1285 error = xfs_qm_dqiterate(mp, gip, XFS_QMOPT_GQUOTA,
1289 flags |= XFS_GQUOTA_CHKD;
1293 error = xfs_qm_dqiterate(mp, pip, XFS_QMOPT_PQUOTA,
1297 flags |= XFS_PQUOTA_CHKD;
1302 * Iterate thru all the inodes in the file system,
1303 * adjusting the corresponding dquot counters in core.
1305 error = xfs_bulkstat(mp, &lastino, &count,
1306 xfs_qm_dqusage_adjust,
1307 structsz, NULL, &done);
1314 * We've made all the changes that we need to make incore. Flush them
1315 * down to disk buffers if everything was updated successfully.
1317 if (XFS_IS_UQUOTA_ON(mp)) {
1318 error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one,
1321 if (XFS_IS_GQUOTA_ON(mp)) {
1322 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one,
1327 if (XFS_IS_PQUOTA_ON(mp)) {
1328 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one,
1334 error2 = xfs_buf_delwri_submit(&buffer_list);
1339 * We can get this error if we couldn't do a dquot allocation inside
1340 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1341 * dirty dquots that might be cached, we just want to get rid of them
1342 * and turn quotaoff. The dquots won't be attached to any of the inodes
1343 * at this point (because we intentionally didn't in dqget_noattach).
1346 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL);
1351 * If one type of quotas is off, then it will lose its
1352 * quotachecked status, since we won't be doing accounting for
1353 * that type anymore.
1355 mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD;
1356 mp->m_qflags |= flags;
1359 while (!list_empty(&buffer_list)) {
1360 struct xfs_buf *bp =
1361 list_first_entry(&buffer_list, struct xfs_buf, b_list);
1362 list_del_init(&bp->b_list);
1368 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1371 * We must turn off quotas.
1373 ASSERT(mp->m_quotainfo != NULL);
1374 xfs_qm_destroy_quotainfo(mp);
1375 if (xfs_mount_reset_sbqflags(mp)) {
1377 "Quotacheck: Failed to reset quota flags.");
1380 xfs_notice(mp, "Quotacheck: Done.");
1385 * This is called from xfs_mountfs to start quotas and initialize all
1386 * necessary data structures like quotainfo. This is also responsible for
1387 * running a quotacheck as necessary. We are guaranteed that the superblock
1388 * is consistently read in at this point.
1390 * If we fail here, the mount will continue with quota turned off. We don't
1391 * need to inidicate success or failure at all.
1394 xfs_qm_mount_quotas(
1395 struct xfs_mount *mp)
1401 * If quotas on realtime volumes is not supported, we disable
1402 * quotas immediately.
1404 if (mp->m_sb.sb_rextents) {
1405 xfs_notice(mp, "Cannot turn on quotas for realtime filesystem");
1410 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1413 * Allocate the quotainfo structure inside the mount struct, and
1414 * create quotainode(s), and change/rev superblock if necessary.
1416 error = xfs_qm_init_quotainfo(mp);
1419 * We must turn off quotas.
1421 ASSERT(mp->m_quotainfo == NULL);
1426 * If any of the quotas are not consistent, do a quotacheck.
1428 if (XFS_QM_NEED_QUOTACHECK(mp)) {
1429 error = xfs_qm_quotacheck(mp);
1431 /* Quotacheck failed and disabled quotas. */
1436 * If one type of quotas is off, then it will lose its
1437 * quotachecked status, since we won't be doing accounting for
1438 * that type anymore.
1440 if (!XFS_IS_UQUOTA_ON(mp))
1441 mp->m_qflags &= ~XFS_UQUOTA_CHKD;
1442 if (!XFS_IS_GQUOTA_ON(mp))
1443 mp->m_qflags &= ~XFS_GQUOTA_CHKD;
1444 if (!XFS_IS_PQUOTA_ON(mp))
1445 mp->m_qflags &= ~XFS_PQUOTA_CHKD;
1449 * We actually don't have to acquire the m_sb_lock at all.
1450 * This can only be called from mount, and that's single threaded. XXX
1452 spin_lock(&mp->m_sb_lock);
1453 sbf = mp->m_sb.sb_qflags;
1454 mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL;
1455 spin_unlock(&mp->m_sb_lock);
1457 if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) {
1458 if (xfs_sync_sb(mp, false)) {
1460 * We could only have been turning quotas off.
1461 * We aren't in very good shape actually because
1462 * the incore structures are convinced that quotas are
1463 * off, but the on disk superblock doesn't know that !
1465 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp)));
1466 xfs_alert(mp, "%s: Superblock update failed!",
1472 xfs_warn(mp, "Failed to initialize disk quotas.");
1478 * This is called after the superblock has been read in and we're ready to
1479 * iget the quota inodes.
1482 xfs_qm_init_quotainos(
1485 struct xfs_inode *uip = NULL;
1486 struct xfs_inode *gip = NULL;
1487 struct xfs_inode *pip = NULL;
1491 ASSERT(mp->m_quotainfo);
1494 * Get the uquota and gquota inodes
1496 if (xfs_sb_version_hasquota(&mp->m_sb)) {
1497 if (XFS_IS_UQUOTA_ON(mp) &&
1498 mp->m_sb.sb_uquotino != NULLFSINO) {
1499 ASSERT(mp->m_sb.sb_uquotino > 0);
1500 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
1505 if (XFS_IS_GQUOTA_ON(mp) &&
1506 mp->m_sb.sb_gquotino != NULLFSINO) {
1507 ASSERT(mp->m_sb.sb_gquotino > 0);
1508 error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
1513 if (XFS_IS_PQUOTA_ON(mp) &&
1514 mp->m_sb.sb_pquotino != NULLFSINO) {
1515 ASSERT(mp->m_sb.sb_pquotino > 0);
1516 error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
1522 flags |= XFS_QMOPT_SBVERSION;
1526 * Create the three inodes, if they don't exist already. The changes
1527 * made above will get added to a transaction and logged in one of
1528 * the qino_alloc calls below. If the device is readonly,
1529 * temporarily switch to read-write to do this.
1531 if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) {
1532 error = xfs_qm_qino_alloc(mp, &uip,
1533 flags | XFS_QMOPT_UQUOTA);
1537 flags &= ~XFS_QMOPT_SBVERSION;
1539 if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) {
1540 error = xfs_qm_qino_alloc(mp, &gip,
1541 flags | XFS_QMOPT_GQUOTA);
1545 flags &= ~XFS_QMOPT_SBVERSION;
1547 if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) {
1548 error = xfs_qm_qino_alloc(mp, &pip,
1549 flags | XFS_QMOPT_PQUOTA);
1554 mp->m_quotainfo->qi_uquotaip = uip;
1555 mp->m_quotainfo->qi_gquotaip = gip;
1556 mp->m_quotainfo->qi_pquotaip = pip;
1572 struct xfs_dquot *dqp)
1574 struct xfs_mount *mp = dqp->q_mount;
1575 struct xfs_quotainfo *qi = mp->m_quotainfo;
1577 mutex_lock(&qi->qi_tree_lock);
1578 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags),
1579 be32_to_cpu(dqp->q_core.d_id));
1582 mutex_unlock(&qi->qi_tree_lock);
1584 xfs_qm_dqdestroy(dqp);
1587 /* --------------- utility functions for vnodeops ---------------- */
1591 * Given an inode, a uid, gid and prid make sure that we have
1592 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1593 * quotas by creating this file.
1594 * This also attaches dquot(s) to the given inode after locking it,
1595 * and returns the dquots corresponding to the uid and/or gid.
1597 * in : inode (unlocked)
1598 * out : udquot, gdquot with references taken and unlocked
1602 struct xfs_inode *ip,
1607 struct xfs_dquot **O_udqpp,
1608 struct xfs_dquot **O_gdqpp,
1609 struct xfs_dquot **O_pdqpp)
1611 struct xfs_mount *mp = ip->i_mount;
1612 struct xfs_dquot *uq = NULL;
1613 struct xfs_dquot *gq = NULL;
1614 struct xfs_dquot *pq = NULL;
1618 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1621 lockflags = XFS_ILOCK_EXCL;
1622 xfs_ilock(ip, lockflags);
1624 if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip))
1625 gid = ip->i_d.di_gid;
1628 * Attach the dquot(s) to this inode, doing a dquot allocation
1629 * if necessary. The dquot(s) will not be locked.
1631 if (XFS_NOT_DQATTACHED(mp, ip)) {
1632 error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC);
1634 xfs_iunlock(ip, lockflags);
1639 if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) {
1640 if (ip->i_d.di_uid != uid) {
1642 * What we need is the dquot that has this uid, and
1643 * if we send the inode to dqget, the uid of the inode
1644 * takes priority over what's sent in the uid argument.
1645 * We must unlock inode here before calling dqget if
1646 * we're not sending the inode, because otherwise
1647 * we'll deadlock by doing trans_reserve while
1650 xfs_iunlock(ip, lockflags);
1651 error = xfs_qm_dqget(mp, NULL, uid,
1657 ASSERT(error != -ENOENT);
1661 * Get the ilock in the right order.
1664 lockflags = XFS_ILOCK_SHARED;
1665 xfs_ilock(ip, lockflags);
1668 * Take an extra reference, because we'll return
1671 ASSERT(ip->i_udquot);
1672 uq = xfs_qm_dqhold(ip->i_udquot);
1675 if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) {
1676 if (ip->i_d.di_gid != gid) {
1677 xfs_iunlock(ip, lockflags);
1678 error = xfs_qm_dqget(mp, NULL, gid,
1684 ASSERT(error != -ENOENT);
1688 lockflags = XFS_ILOCK_SHARED;
1689 xfs_ilock(ip, lockflags);
1691 ASSERT(ip->i_gdquot);
1692 gq = xfs_qm_dqhold(ip->i_gdquot);
1695 if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) {
1696 if (xfs_get_projid(ip) != prid) {
1697 xfs_iunlock(ip, lockflags);
1698 error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid,
1704 ASSERT(error != -ENOENT);
1708 lockflags = XFS_ILOCK_SHARED;
1709 xfs_ilock(ip, lockflags);
1711 ASSERT(ip->i_pdquot);
1712 pq = xfs_qm_dqhold(ip->i_pdquot);
1716 trace_xfs_dquot_dqalloc(ip);
1718 xfs_iunlock(ip, lockflags);
1740 * Actually transfer ownership, and do dquot modifications.
1741 * These were already reserved.
1747 xfs_dquot_t **IO_olddq,
1750 xfs_dquot_t *prevdq;
1751 uint bfield = XFS_IS_REALTIME_INODE(ip) ?
1752 XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT;
1755 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
1756 ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount));
1761 ASSERT(prevdq != newdq);
1763 xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks));
1764 xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1);
1766 /* the sparkling new dquot */
1767 xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks);
1768 xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1);
1771 * Take an extra reference, because the inode is going to keep
1772 * this dquot pointer even after the trans_commit.
1774 *IO_olddq = xfs_qm_dqhold(newdq);
1780 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1783 xfs_qm_vop_chown_reserve(
1784 struct xfs_trans *tp,
1785 struct xfs_inode *ip,
1786 struct xfs_dquot *udqp,
1787 struct xfs_dquot *gdqp,
1788 struct xfs_dquot *pdqp,
1791 struct xfs_mount *mp = ip->i_mount;
1792 uint delblks, blkflags, prjflags = 0;
1793 struct xfs_dquot *udq_unres = NULL;
1794 struct xfs_dquot *gdq_unres = NULL;
1795 struct xfs_dquot *pdq_unres = NULL;
1796 struct xfs_dquot *udq_delblks = NULL;
1797 struct xfs_dquot *gdq_delblks = NULL;
1798 struct xfs_dquot *pdq_delblks = NULL;
1802 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
1803 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1805 delblks = ip->i_delayed_blks;
1806 blkflags = XFS_IS_REALTIME_INODE(ip) ?
1807 XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS;
1809 if (XFS_IS_UQUOTA_ON(mp) && udqp &&
1810 ip->i_d.di_uid != be32_to_cpu(udqp->q_core.d_id)) {
1813 * If there are delayed allocation blocks, then we have to
1814 * unreserve those from the old dquot, and add them to the
1818 ASSERT(ip->i_udquot);
1819 udq_unres = ip->i_udquot;
1822 if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp &&
1823 ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id)) {
1826 ASSERT(ip->i_gdquot);
1827 gdq_unres = ip->i_gdquot;
1831 if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp &&
1832 xfs_get_projid(ip) != be32_to_cpu(pdqp->q_core.d_id)) {
1833 prjflags = XFS_QMOPT_ENOSPC;
1836 ASSERT(ip->i_pdquot);
1837 pdq_unres = ip->i_pdquot;
1841 error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount,
1842 udq_delblks, gdq_delblks, pdq_delblks,
1843 ip->i_d.di_nblocks, 1,
1844 flags | blkflags | prjflags);
1849 * Do the delayed blks reservations/unreservations now. Since, these
1850 * are done without the help of a transaction, if a reservation fails
1851 * its previous reservations won't be automatically undone by trans
1852 * code. So, we have to do it manually here.
1856 * Do the reservations first. Unreservation can't fail.
1858 ASSERT(udq_delblks || gdq_delblks || pdq_delblks);
1859 ASSERT(udq_unres || gdq_unres || pdq_unres);
1860 error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
1861 udq_delblks, gdq_delblks, pdq_delblks,
1862 (xfs_qcnt_t)delblks, 0,
1863 flags | blkflags | prjflags);
1866 xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
1867 udq_unres, gdq_unres, pdq_unres,
1868 -((xfs_qcnt_t)delblks), 0, blkflags);
1875 xfs_qm_vop_rename_dqattach(
1876 struct xfs_inode **i_tab)
1878 struct xfs_mount *mp = i_tab[0]->i_mount;
1881 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1884 for (i = 0; (i < 4 && i_tab[i]); i++) {
1885 struct xfs_inode *ip = i_tab[i];
1889 * Watch out for duplicate entries in the table.
1891 if (i == 0 || ip != i_tab[i-1]) {
1892 if (XFS_NOT_DQATTACHED(mp, ip)) {
1893 error = xfs_qm_dqattach(ip, 0);
1903 xfs_qm_vop_create_dqattach(
1904 struct xfs_trans *tp,
1905 struct xfs_inode *ip,
1906 struct xfs_dquot *udqp,
1907 struct xfs_dquot *gdqp,
1908 struct xfs_dquot *pdqp)
1910 struct xfs_mount *mp = tp->t_mountp;
1912 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1915 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
1916 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1918 if (udqp && XFS_IS_UQUOTA_ON(mp)) {
1919 ASSERT(ip->i_udquot == NULL);
1920 ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id));
1922 ip->i_udquot = xfs_qm_dqhold(udqp);
1923 xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1);
1925 if (gdqp && XFS_IS_GQUOTA_ON(mp)) {
1926 ASSERT(ip->i_gdquot == NULL);
1927 ASSERT(ip->i_d.di_gid == be32_to_cpu(gdqp->q_core.d_id));
1928 ip->i_gdquot = xfs_qm_dqhold(gdqp);
1929 xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1);
1931 if (pdqp && XFS_IS_PQUOTA_ON(mp)) {
1932 ASSERT(ip->i_pdquot == NULL);
1933 ASSERT(xfs_get_projid(ip) == be32_to_cpu(pdqp->q_core.d_id));
1935 ip->i_pdquot = xfs_qm_dqhold(pdqp);
1936 xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1);