1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_log_format.h"
11 #include "xfs_trans_resv.h"
14 #include "xfs_mount.h"
15 #include "xfs_inode.h"
16 #include "xfs_iwalk.h"
17 #include "xfs_quota.h"
19 #include "xfs_bmap_util.h"
20 #include "xfs_trans.h"
21 #include "xfs_trans_space.h"
23 #include "xfs_trace.h"
24 #include "xfs_icache.h"
25 #include "xfs_error.h"
28 * The global quota manager. There is only one of these for the entire
29 * system, _not_ one per file system. XQM keeps track of the overall
30 * quota functionality, including maintaining the freelist and hash
33 STATIC int xfs_qm_init_quotainos(xfs_mount_t *);
34 STATIC int xfs_qm_init_quotainfo(xfs_mount_t *);
36 STATIC void xfs_qm_destroy_quotainos(xfs_quotainfo_t *qi);
37 STATIC void xfs_qm_dqfree_one(struct xfs_dquot *dqp);
39 * We use the batch lookup interface to iterate over the dquots as it
40 * currently is the only interface into the radix tree code that allows
41 * fuzzy lookups instead of exact matches. Holding the lock over multiple
42 * operations is fine as all callers are used either during mount/umount
45 #define XFS_DQ_LOOKUP_BATCH 32
51 int (*execute)(struct xfs_dquot *dqp, void *data),
54 struct xfs_quotainfo *qi = mp->m_quotainfo;
55 struct radix_tree_root *tree = xfs_dquot_tree(qi, type);
67 struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH];
71 mutex_lock(&qi->qi_tree_lock);
72 nr_found = radix_tree_gang_lookup(tree, (void **)batch,
73 next_index, XFS_DQ_LOOKUP_BATCH);
75 mutex_unlock(&qi->qi_tree_lock);
79 for (i = 0; i < nr_found; i++) {
80 struct xfs_dquot *dqp = batch[i];
82 next_index = be32_to_cpu(dqp->q_core.d_id) + 1;
84 error = execute(batch[i], data);
85 if (error == -EAGAIN) {
89 if (error && last_error != -EFSCORRUPTED)
93 mutex_unlock(&qi->qi_tree_lock);
95 /* bail out if the filesystem is corrupted. */
96 if (last_error == -EFSCORRUPTED) {
100 /* we're done if id overflows back to zero */
115 * Purge a dquot from all tracking data structures and free it.
119 struct xfs_dquot *dqp,
122 struct xfs_mount *mp = dqp->q_mount;
123 struct xfs_quotainfo *qi = mp->m_quotainfo;
126 if ((dqp->dq_flags & XFS_DQ_FREEING) || dqp->q_nrefs != 0) {
131 dqp->dq_flags |= XFS_DQ_FREEING;
136 * If we are turning this type of quotas off, we don't care
137 * about the dirty metadata sitting in this dquot. OTOH, if
138 * we're unmounting, we do care, so we flush it and wait.
140 if (XFS_DQ_IS_DIRTY(dqp)) {
141 struct xfs_buf *bp = NULL;
145 * We don't care about getting disk errors here. We need
146 * to purge this dquot anyway, so we go ahead regardless.
148 error = xfs_qm_dqflush(dqp, &bp);
150 error = xfs_bwrite(bp);
156 ASSERT(atomic_read(&dqp->q_pincount) == 0);
157 ASSERT(XFS_FORCED_SHUTDOWN(mp) ||
158 !test_bit(XFS_LI_IN_AIL, &dqp->q_logitem.qli_item.li_flags));
163 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags),
164 be32_to_cpu(dqp->q_core.d_id));
168 * We move dquots to the freelist as soon as their reference count
169 * hits zero, so it really should be on the freelist here.
171 ASSERT(!list_empty(&dqp->q_lru));
172 list_lru_del(&qi->qi_lru, &dqp->q_lru);
173 XFS_STATS_DEC(mp, xs_qm_dquot_unused);
175 xfs_qm_dqdestroy(dqp);
180 * Purge the dquot cache.
184 struct xfs_mount *mp,
187 if (flags & XFS_QMOPT_UQUOTA)
188 xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge, NULL);
189 if (flags & XFS_QMOPT_GQUOTA)
190 xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL);
191 if (flags & XFS_QMOPT_PQUOTA)
192 xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge, NULL);
196 * Just destroy the quotainfo structure.
200 struct xfs_mount *mp)
202 if (mp->m_quotainfo) {
203 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL);
204 xfs_qm_destroy_quotainfo(mp);
209 * Called from the vfsops layer.
212 xfs_qm_unmount_quotas(
216 * Release the dquots that root inode, et al might be holding,
217 * before we flush quotas and blow away the quotainfo structure.
219 ASSERT(mp->m_rootip);
220 xfs_qm_dqdetach(mp->m_rootip);
222 xfs_qm_dqdetach(mp->m_rbmip);
224 xfs_qm_dqdetach(mp->m_rsumip);
227 * Release the quota inodes.
229 if (mp->m_quotainfo) {
230 if (mp->m_quotainfo->qi_uquotaip) {
231 xfs_irele(mp->m_quotainfo->qi_uquotaip);
232 mp->m_quotainfo->qi_uquotaip = NULL;
234 if (mp->m_quotainfo->qi_gquotaip) {
235 xfs_irele(mp->m_quotainfo->qi_gquotaip);
236 mp->m_quotainfo->qi_gquotaip = NULL;
238 if (mp->m_quotainfo->qi_pquotaip) {
239 xfs_irele(mp->m_quotainfo->qi_pquotaip);
240 mp->m_quotainfo->qi_pquotaip = NULL;
251 xfs_dquot_t **IO_idqpp)
256 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
260 * See if we already have it in the inode itself. IO_idqpp is &i_udquot
261 * or &i_gdquot. This made the code look weird, but made the logic a lot
266 trace_xfs_dqattach_found(dqp);
271 * Find the dquot from somewhere. This bumps the reference count of
272 * dquot and returns it locked. This can return ENOENT if dquot didn't
273 * exist on disk and we didn't ask it to allocate; ESRCH if quotas got
274 * turned off suddenly.
276 error = xfs_qm_dqget_inode(ip, type, doalloc, &dqp);
280 trace_xfs_dqattach_get(dqp);
283 * dqget may have dropped and re-acquired the ilock, but it guarantees
284 * that the dquot returned is the one that should go in the inode.
292 xfs_qm_need_dqattach(
293 struct xfs_inode *ip)
295 struct xfs_mount *mp = ip->i_mount;
297 if (!XFS_IS_QUOTA_RUNNING(mp))
299 if (!XFS_IS_QUOTA_ON(mp))
301 if (!XFS_NOT_DQATTACHED(mp, ip))
303 if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino))
309 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
311 * If @doalloc is true, the dquot(s) will be allocated if needed.
312 * Inode may get unlocked and relocked in here, and the caller must deal with
316 xfs_qm_dqattach_locked(
320 xfs_mount_t *mp = ip->i_mount;
323 if (!xfs_qm_need_dqattach(ip))
326 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
328 if (XFS_IS_UQUOTA_ON(mp) && !ip->i_udquot) {
329 error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER,
330 doalloc, &ip->i_udquot);
333 ASSERT(ip->i_udquot);
336 if (XFS_IS_GQUOTA_ON(mp) && !ip->i_gdquot) {
337 error = xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP,
338 doalloc, &ip->i_gdquot);
341 ASSERT(ip->i_gdquot);
344 if (XFS_IS_PQUOTA_ON(mp) && !ip->i_pdquot) {
345 error = xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ,
346 doalloc, &ip->i_pdquot);
349 ASSERT(ip->i_pdquot);
354 * Don't worry about the dquots that we may have attached before any
355 * error - they'll get detached later if it has not already been done.
357 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
363 struct xfs_inode *ip)
367 if (!xfs_qm_need_dqattach(ip))
370 xfs_ilock(ip, XFS_ILOCK_EXCL);
371 error = xfs_qm_dqattach_locked(ip, false);
372 xfs_iunlock(ip, XFS_ILOCK_EXCL);
378 * Release dquots (and their references) if any.
379 * The inode should be locked EXCL except when this's called by
386 if (!(ip->i_udquot || ip->i_gdquot || ip->i_pdquot))
389 trace_xfs_dquot_dqdetach(ip);
391 ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino));
393 xfs_qm_dqrele(ip->i_udquot);
397 xfs_qm_dqrele(ip->i_gdquot);
401 xfs_qm_dqrele(ip->i_pdquot);
406 struct xfs_qm_isolate {
407 struct list_head buffers;
408 struct list_head dispose;
411 static enum lru_status
412 xfs_qm_dquot_isolate(
413 struct list_head *item,
414 struct list_lru_one *lru,
415 spinlock_t *lru_lock,
417 __releases(lru_lock) __acquires(lru_lock)
419 struct xfs_dquot *dqp = container_of(item,
420 struct xfs_dquot, q_lru);
421 struct xfs_qm_isolate *isol = arg;
423 if (!xfs_dqlock_nowait(dqp))
427 * This dquot has acquired a reference in the meantime remove it from
428 * the freelist and try again.
432 XFS_STATS_INC(dqp->q_mount, xs_qm_dqwants);
434 trace_xfs_dqreclaim_want(dqp);
435 list_lru_isolate(lru, &dqp->q_lru);
436 XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused);
441 * If the dquot is dirty, flush it. If it's already being flushed, just
442 * skip it so there is time for the IO to complete before we try to
443 * reclaim it again on the next LRU pass.
445 if (!xfs_dqflock_nowait(dqp)) {
450 if (XFS_DQ_IS_DIRTY(dqp)) {
451 struct xfs_buf *bp = NULL;
454 trace_xfs_dqreclaim_dirty(dqp);
456 /* we have to drop the LRU lock to flush the dquot */
457 spin_unlock(lru_lock);
459 error = xfs_qm_dqflush(dqp, &bp);
461 goto out_unlock_dirty;
463 xfs_buf_delwri_queue(bp, &isol->buffers);
465 goto out_unlock_dirty;
470 * Prevent lookups now that we are past the point of no return.
472 dqp->dq_flags |= XFS_DQ_FREEING;
475 ASSERT(dqp->q_nrefs == 0);
476 list_lru_isolate_move(lru, &dqp->q_lru, &isol->dispose);
477 XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused);
478 trace_xfs_dqreclaim_done(dqp);
479 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaims);
483 trace_xfs_dqreclaim_busy(dqp);
484 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses);
488 trace_xfs_dqreclaim_busy(dqp);
489 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses);
497 struct shrinker *shrink,
498 struct shrink_control *sc)
500 struct xfs_quotainfo *qi = container_of(shrink,
501 struct xfs_quotainfo, qi_shrinker);
502 struct xfs_qm_isolate isol;
506 if ((sc->gfp_mask & (__GFP_FS|__GFP_DIRECT_RECLAIM)) != (__GFP_FS|__GFP_DIRECT_RECLAIM))
509 INIT_LIST_HEAD(&isol.buffers);
510 INIT_LIST_HEAD(&isol.dispose);
512 freed = list_lru_shrink_walk(&qi->qi_lru, sc,
513 xfs_qm_dquot_isolate, &isol);
515 error = xfs_buf_delwri_submit(&isol.buffers);
517 xfs_warn(NULL, "%s: dquot reclaim failed", __func__);
519 while (!list_empty(&isol.dispose)) {
520 struct xfs_dquot *dqp;
522 dqp = list_first_entry(&isol.dispose, struct xfs_dquot, q_lru);
523 list_del_init(&dqp->q_lru);
524 xfs_qm_dqfree_one(dqp);
532 struct shrinker *shrink,
533 struct shrink_control *sc)
535 struct xfs_quotainfo *qi = container_of(shrink,
536 struct xfs_quotainfo, qi_shrinker);
538 return list_lru_shrink_count(&qi->qi_lru, sc);
545 xfs_quotainfo_t *qinf)
548 struct xfs_def_quota *defq;
549 struct xfs_disk_dquot *ddqp;
552 error = xfs_qm_dqget_uncached(mp, 0, type, &dqp);
557 defq = xfs_get_defquota(dqp, qinf);
560 * Timers and warnings have been already set, let's just set the
561 * default limits for this quota type
563 defq->bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit);
564 defq->bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit);
565 defq->ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit);
566 defq->isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit);
567 defq->rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit);
568 defq->rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit);
569 xfs_qm_dqdestroy(dqp);
572 /* Initialize quota time limits from the root dquot. */
574 xfs_qm_init_timelimits(
575 struct xfs_mount *mp,
576 struct xfs_quotainfo *qinf)
578 struct xfs_disk_dquot *ddqp;
579 struct xfs_dquot *dqp;
583 qinf->qi_btimelimit = XFS_QM_BTIMELIMIT;
584 qinf->qi_itimelimit = XFS_QM_ITIMELIMIT;
585 qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT;
586 qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT;
587 qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT;
588 qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT;
591 * We try to get the limits from the superuser's limits fields.
592 * This is quite hacky, but it is standard quota practice.
594 * Since we may not have done a quotacheck by this point, just read
595 * the dquot without attaching it to any hashtables or lists.
597 * Timers and warnings are globally set by the first timer found in
598 * user/group/proj quota types, otherwise a default value is used.
599 * This should be split into different fields per quota type.
601 if (XFS_IS_UQUOTA_RUNNING(mp))
603 else if (XFS_IS_GQUOTA_RUNNING(mp))
607 error = xfs_qm_dqget_uncached(mp, 0, type, &dqp);
613 * The warnings and timers set the grace period given to
614 * a user or group before he or she can not perform any
615 * more writing. If it is zero, a default is used.
618 qinf->qi_btimelimit = be32_to_cpu(ddqp->d_btimer);
620 qinf->qi_itimelimit = be32_to_cpu(ddqp->d_itimer);
621 if (ddqp->d_rtbtimer)
622 qinf->qi_rtbtimelimit = be32_to_cpu(ddqp->d_rtbtimer);
624 qinf->qi_bwarnlimit = be16_to_cpu(ddqp->d_bwarns);
626 qinf->qi_iwarnlimit = be16_to_cpu(ddqp->d_iwarns);
627 if (ddqp->d_rtbwarns)
628 qinf->qi_rtbwarnlimit = be16_to_cpu(ddqp->d_rtbwarns);
630 xfs_qm_dqdestroy(dqp);
634 * This initializes all the quota information that's kept in the
638 xfs_qm_init_quotainfo(
639 struct xfs_mount *mp)
641 struct xfs_quotainfo *qinf;
644 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
646 qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), 0);
648 error = list_lru_init(&qinf->qi_lru);
653 * See if quotainodes are setup, and if not, allocate them,
654 * and change the superblock accordingly.
656 error = xfs_qm_init_quotainos(mp);
660 INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS);
661 INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS);
662 INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS);
663 mutex_init(&qinf->qi_tree_lock);
665 /* mutex used to serialize quotaoffs */
666 mutex_init(&qinf->qi_quotaofflock);
668 /* Precalc some constants */
669 qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
670 qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(qinf->qi_dqchunklen);
672 mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD);
674 xfs_qm_init_timelimits(mp, qinf);
676 if (XFS_IS_UQUOTA_RUNNING(mp))
677 xfs_qm_set_defquota(mp, XFS_DQ_USER, qinf);
678 if (XFS_IS_GQUOTA_RUNNING(mp))
679 xfs_qm_set_defquota(mp, XFS_DQ_GROUP, qinf);
680 if (XFS_IS_PQUOTA_RUNNING(mp))
681 xfs_qm_set_defquota(mp, XFS_DQ_PROJ, qinf);
683 qinf->qi_shrinker.count_objects = xfs_qm_shrink_count;
684 qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan;
685 qinf->qi_shrinker.seeks = DEFAULT_SEEKS;
686 qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE;
688 error = register_shrinker(&qinf->qi_shrinker);
695 mutex_destroy(&qinf->qi_quotaofflock);
696 mutex_destroy(&qinf->qi_tree_lock);
697 xfs_qm_destroy_quotainos(qinf);
699 list_lru_destroy(&qinf->qi_lru);
702 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);
722 xfs_qm_destroy_quotainos(qi);
723 mutex_destroy(&qi->qi_tree_lock);
724 mutex_destroy(&qi->qi_quotaofflock);
726 mp->m_quotainfo = NULL;
730 * Create an inode and return with a reference already taken, but unlocked
731 * This is how we create quota inodes
741 bool need_alloc = true;
745 * With superblock that doesn't have separate pquotino, we
746 * share an inode between gquota and pquota. If the on-disk
747 * superblock has GQUOTA and the filesystem is now mounted
748 * with PQUOTA, just use sb_gquotino for sb_pquotino and
751 if (!xfs_sb_version_has_pquotino(&mp->m_sb) &&
752 (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) {
753 xfs_ino_t ino = NULLFSINO;
755 if ((flags & XFS_QMOPT_PQUOTA) &&
756 (mp->m_sb.sb_gquotino != NULLFSINO)) {
757 ino = mp->m_sb.sb_gquotino;
758 if (mp->m_sb.sb_pquotino != NULLFSINO) {
759 XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW,
761 return -EFSCORRUPTED;
763 } else if ((flags & XFS_QMOPT_GQUOTA) &&
764 (mp->m_sb.sb_pquotino != NULLFSINO)) {
765 ino = mp->m_sb.sb_pquotino;
766 if (mp->m_sb.sb_gquotino != NULLFSINO) {
767 XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW,
769 return -EFSCORRUPTED;
772 if (ino != NULLFSINO) {
773 error = xfs_iget(mp, NULL, ino, 0, 0, ip);
776 mp->m_sb.sb_gquotino = NULLFSINO;
777 mp->m_sb.sb_pquotino = NULLFSINO;
782 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_create,
783 XFS_QM_QINOCREATE_SPACE_RES(mp), 0, 0, &tp);
788 error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, ip);
790 xfs_trans_cancel(tp);
796 * Make the changes in the superblock, and log those too.
797 * sbfields arg may contain fields other than *QUOTINO;
798 * VERSIONNUM for example.
800 spin_lock(&mp->m_sb_lock);
801 if (flags & XFS_QMOPT_SBVERSION) {
802 ASSERT(!xfs_sb_version_hasquota(&mp->m_sb));
804 xfs_sb_version_addquota(&mp->m_sb);
805 mp->m_sb.sb_uquotino = NULLFSINO;
806 mp->m_sb.sb_gquotino = NULLFSINO;
807 mp->m_sb.sb_pquotino = NULLFSINO;
809 /* qflags will get updated fully _after_ quotacheck */
810 mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT;
812 if (flags & XFS_QMOPT_UQUOTA)
813 mp->m_sb.sb_uquotino = (*ip)->i_ino;
814 else if (flags & XFS_QMOPT_GQUOTA)
815 mp->m_sb.sb_gquotino = (*ip)->i_ino;
817 mp->m_sb.sb_pquotino = (*ip)->i_ino;
818 spin_unlock(&mp->m_sb_lock);
821 error = xfs_trans_commit(tp);
823 ASSERT(XFS_FORCED_SHUTDOWN(mp));
824 xfs_alert(mp, "%s failed (error %d)!", __func__, error);
827 xfs_finish_inode_setup(*ip);
833 xfs_qm_reset_dqcounts(
839 struct xfs_dqblk *dqb;
843 trace_xfs_reset_dqcounts(bp, _RET_IP_);
846 * Reset all counters and timers. They'll be
847 * started afresh by xfs_qm_quotacheck.
850 j = (int)XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) /
852 ASSERT(mp->m_quotainfo->qi_dqperchunk == j);
855 for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) {
856 struct xfs_disk_dquot *ddq;
858 ddq = (struct xfs_disk_dquot *)&dqb[j];
861 * Do a sanity check, and if needed, repair the dqblk. Don't
862 * output any warnings because it's perfectly possible to
863 * find uninitialised dquot blks. See comment in
866 fa = xfs_dqblk_verify(mp, &dqb[j], id + j, type);
868 xfs_dqblk_repair(mp, &dqb[j], id + j, type);
871 * Reset type in case we are reusing group quota file for
872 * project quotas or vice versa
885 if (xfs_sb_version_hascrc(&mp->m_sb)) {
886 xfs_update_cksum((char *)&dqb[j],
887 sizeof(struct xfs_dqblk),
894 xfs_qm_reset_dqcounts_all(
895 struct xfs_mount *mp,
898 xfs_filblks_t blkcnt,
900 struct list_head *buffer_list)
907 type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER :
908 (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP);
912 * Blkcnt arg can be a very big number, and might even be
913 * larger than the log itself. So, we have to break it up into
914 * manageable-sized transactions.
915 * Note that we don't start a permanent transaction here; we might
916 * not be able to get a log reservation for the whole thing up front,
917 * and we don't really care to either, because we just discard
918 * everything if we were to crash in the middle of this loop.
921 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
922 XFS_FSB_TO_DADDR(mp, bno),
923 mp->m_quotainfo->qi_dqchunklen, 0, &bp,
927 * CRC and validation errors will return a EFSCORRUPTED here. If
928 * this occurs, re-read without CRC validation so that we can
929 * repair the damage via xfs_qm_reset_dqcounts(). This process
930 * will leave a trace in the log indicating corruption has
933 if (error == -EFSCORRUPTED) {
934 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
935 XFS_FSB_TO_DADDR(mp, bno),
936 mp->m_quotainfo->qi_dqchunklen, 0, &bp,
944 * A corrupt buffer might not have a verifier attached, so
945 * make sure we have the correct one attached before writeback
948 bp->b_ops = &xfs_dquot_buf_ops;
949 xfs_qm_reset_dqcounts(mp, bp, firstid, type);
950 xfs_buf_delwri_queue(bp, buffer_list);
953 /* goto the next block. */
955 firstid += mp->m_quotainfo->qi_dqperchunk;
962 * Iterate over all allocated dquot blocks in this quota inode, zeroing all
963 * counters for every chunk of dquots that we find.
966 xfs_qm_reset_dqcounts_buf(
967 struct xfs_mount *mp,
968 struct xfs_inode *qip,
970 struct list_head *buffer_list)
972 struct xfs_bmbt_irec *map;
973 int i, nmaps; /* number of map entries */
974 int error; /* return value */
975 xfs_fileoff_t lblkno;
976 xfs_filblks_t maxlblkcnt;
978 xfs_fsblock_t rablkno;
979 xfs_filblks_t rablkcnt;
983 * This looks racy, but we can't keep an inode lock across a
984 * trans_reserve. But, this gets called during quotacheck, and that
985 * happens only at mount time which is single threaded.
987 if (qip->i_d.di_nblocks == 0)
990 map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), 0);
993 maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes);
997 nmaps = XFS_DQITER_MAP_SIZE;
999 * We aren't changing the inode itself. Just changing
1000 * some of its data. No new blocks are added here, and
1001 * the inode is never added to the transaction.
1003 lock_mode = xfs_ilock_data_map_shared(qip);
1004 error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno,
1006 xfs_iunlock(qip, lock_mode);
1010 ASSERT(nmaps <= XFS_DQITER_MAP_SIZE);
1011 for (i = 0; i < nmaps; i++) {
1012 ASSERT(map[i].br_startblock != DELAYSTARTBLOCK);
1013 ASSERT(map[i].br_blockcount);
1016 lblkno += map[i].br_blockcount;
1018 if (map[i].br_startblock == HOLESTARTBLOCK)
1021 firstid = (xfs_dqid_t) map[i].br_startoff *
1022 mp->m_quotainfo->qi_dqperchunk;
1024 * Do a read-ahead on the next extent.
1026 if ((i+1 < nmaps) &&
1027 (map[i+1].br_startblock != HOLESTARTBLOCK)) {
1028 rablkcnt = map[i+1].br_blockcount;
1029 rablkno = map[i+1].br_startblock;
1030 while (rablkcnt--) {
1031 xfs_buf_readahead(mp->m_ddev_targp,
1032 XFS_FSB_TO_DADDR(mp, rablkno),
1033 mp->m_quotainfo->qi_dqchunklen,
1034 &xfs_dquot_buf_ops);
1039 * Iterate thru all the blks in the extent and
1040 * reset the counters of all the dquots inside them.
1042 error = xfs_qm_reset_dqcounts_all(mp, firstid,
1043 map[i].br_startblock,
1044 map[i].br_blockcount,
1045 flags, buffer_list);
1049 } while (nmaps > 0);
1057 * Called by dqusage_adjust in doing a quotacheck.
1059 * Given the inode, and a dquot id this updates both the incore dqout as well
1060 * as the buffer copy. This is so that once the quotacheck is done, we can
1061 * just log all the buffers, as opposed to logging numerous updates to
1062 * individual dquots.
1065 xfs_qm_quotacheck_dqadjust(
1066 struct xfs_inode *ip,
1071 struct xfs_mount *mp = ip->i_mount;
1072 struct xfs_dquot *dqp;
1076 id = xfs_qm_id_for_quotatype(ip, type);
1077 error = xfs_qm_dqget(mp, id, type, true, &dqp);
1080 * Shouldn't be able to turn off quotas here.
1082 ASSERT(error != -ESRCH);
1083 ASSERT(error != -ENOENT);
1087 trace_xfs_dqadjust(dqp);
1090 * Adjust the inode count and the block count to reflect this inode's
1093 be64_add_cpu(&dqp->q_core.d_icount, 1);
1094 dqp->q_res_icount++;
1096 be64_add_cpu(&dqp->q_core.d_bcount, nblks);
1097 dqp->q_res_bcount += nblks;
1100 be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks);
1101 dqp->q_res_rtbcount += rtblks;
1105 * Set default limits, adjust timers (since we changed usages)
1107 * There are no timers for the default values set in the root dquot.
1109 if (dqp->q_core.d_id) {
1110 xfs_qm_adjust_dqlimits(mp, dqp);
1111 xfs_qm_adjust_dqtimers(mp, &dqp->q_core);
1114 dqp->dq_flags |= XFS_DQ_DIRTY;
1120 * callback routine supplied to bulkstat(). Given an inumber, find its
1121 * dquots and update them to account for resources taken by that inode.
1125 xfs_qm_dqusage_adjust(
1126 struct xfs_mount *mp,
1127 struct xfs_trans *tp,
1131 struct xfs_inode *ip;
1133 xfs_filblks_t rtblks = 0; /* total rt blks */
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))
1146 * We don't _need_ to take the ilock EXCL here because quotacheck runs
1147 * at mount time and therefore nobody will be racing chown/chproj.
1149 error = xfs_iget(mp, tp, ino, XFS_IGET_DONTCACHE, 0, &ip);
1150 if (error == -EINVAL || error == -ENOENT)
1155 ASSERT(ip->i_delayed_blks == 0);
1157 if (XFS_IS_REALTIME_INODE(ip)) {
1158 struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
1160 if (!(ifp->if_flags & XFS_IFEXTENTS)) {
1161 error = xfs_iread_extents(tp, ip, XFS_DATA_FORK);
1166 xfs_bmap_count_leaves(ifp, &rtblks);
1169 nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks;
1172 * Add the (disk blocks and inode) resources occupied by this
1173 * inode to its dquots. We do this adjustment in the incore dquot,
1174 * and also copy the changes to its buffer.
1175 * We don't care about putting these changes in a transaction
1176 * envelope because if we crash in the middle of a 'quotacheck'
1177 * we have to start from the beginning anyway.
1178 * Once we're done, we'll log all the dquot bufs.
1180 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1181 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1183 if (XFS_IS_UQUOTA_ON(mp)) {
1184 error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQ_USER, nblks,
1190 if (XFS_IS_GQUOTA_ON(mp)) {
1191 error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQ_GROUP, nblks,
1197 if (XFS_IS_PQUOTA_ON(mp)) {
1198 error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQ_PROJ, nblks,
1211 struct xfs_dquot *dqp,
1214 struct xfs_mount *mp = dqp->q_mount;
1215 struct list_head *buffer_list = data;
1216 struct xfs_buf *bp = NULL;
1220 if (dqp->dq_flags & XFS_DQ_FREEING)
1222 if (!XFS_DQ_IS_DIRTY(dqp))
1226 * The only way the dquot is already flush locked by the time quotacheck
1227 * gets here is if reclaim flushed it before the dqadjust walk dirtied
1228 * it for the final time. Quotacheck collects all dquot bufs in the
1229 * local delwri queue before dquots are dirtied, so reclaim can't have
1230 * possibly queued it for I/O. The only way out is to push the buffer to
1231 * cycle the flush lock.
1233 if (!xfs_dqflock_nowait(dqp)) {
1234 /* buf is pinned in-core by delwri list */
1235 bp = xfs_buf_incore(mp->m_ddev_targp, dqp->q_blkno,
1236 mp->m_quotainfo->qi_dqchunklen, 0);
1243 xfs_buf_delwri_pushbuf(bp, buffer_list);
1250 error = xfs_qm_dqflush(dqp, &bp);
1254 xfs_buf_delwri_queue(bp, buffer_list);
1262 * Walk thru all the filesystem inodes and construct a consistent view
1263 * of the disk quota world. If the quotacheck fails, disable quotas.
1271 LIST_HEAD (buffer_list);
1272 struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip;
1273 struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip;
1274 struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip;
1278 ASSERT(uip || gip || pip);
1279 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1281 xfs_notice(mp, "Quotacheck needed: Please wait.");
1284 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1285 * their counters to zero. We need a clean slate.
1286 * We don't log our changes till later.
1289 error = xfs_qm_reset_dqcounts_buf(mp, uip, XFS_QMOPT_UQUOTA,
1293 flags |= XFS_UQUOTA_CHKD;
1297 error = xfs_qm_reset_dqcounts_buf(mp, gip, XFS_QMOPT_GQUOTA,
1301 flags |= XFS_GQUOTA_CHKD;
1305 error = xfs_qm_reset_dqcounts_buf(mp, pip, XFS_QMOPT_PQUOTA,
1309 flags |= XFS_PQUOTA_CHKD;
1312 error = xfs_iwalk_threaded(mp, 0, 0, xfs_qm_dqusage_adjust, 0, true,
1318 * We've made all the changes that we need to make incore. Flush them
1319 * down to disk buffers if everything was updated successfully.
1321 if (XFS_IS_UQUOTA_ON(mp)) {
1322 error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one,
1325 if (XFS_IS_GQUOTA_ON(mp)) {
1326 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one,
1331 if (XFS_IS_PQUOTA_ON(mp)) {
1332 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one,
1338 error2 = xfs_buf_delwri_submit(&buffer_list);
1343 * We can get this error if we couldn't do a dquot allocation inside
1344 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1345 * dirty dquots that might be cached, we just want to get rid of them
1346 * and turn quotaoff. The dquots won't be attached to any of the inodes
1347 * at this point (because we intentionally didn't in dqget_noattach).
1350 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL);
1355 * If one type of quotas is off, then it will lose its
1356 * quotachecked status, since we won't be doing accounting for
1357 * that type anymore.
1359 mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD;
1360 mp->m_qflags |= flags;
1363 xfs_buf_delwri_cancel(&buffer_list);
1367 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1370 * We must turn off quotas.
1372 ASSERT(mp->m_quotainfo != NULL);
1373 xfs_qm_destroy_quotainfo(mp);
1374 if (xfs_mount_reset_sbqflags(mp)) {
1376 "Quotacheck: Failed to reset quota flags.");
1379 xfs_notice(mp, "Quotacheck: Done.");
1384 * This is called from xfs_mountfs to start quotas and initialize all
1385 * necessary data structures like quotainfo. This is also responsible for
1386 * running a quotacheck as necessary. We are guaranteed that the superblock
1387 * is consistently read in at this point.
1389 * If we fail here, the mount will continue with quota turned off. We don't
1390 * need to inidicate success or failure at all.
1393 xfs_qm_mount_quotas(
1394 struct xfs_mount *mp)
1400 * If quotas on realtime volumes is not supported, we disable
1401 * quotas immediately.
1403 if (mp->m_sb.sb_rextents) {
1404 xfs_notice(mp, "Cannot turn on quotas for realtime filesystem");
1409 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1412 * Allocate the quotainfo structure inside the mount struct, and
1413 * create quotainode(s), and change/rev superblock if necessary.
1415 error = xfs_qm_init_quotainfo(mp);
1418 * We must turn off quotas.
1420 ASSERT(mp->m_quotainfo == NULL);
1425 * If any of the quotas are not consistent, do a quotacheck.
1427 if (XFS_QM_NEED_QUOTACHECK(mp)) {
1428 error = xfs_qm_quotacheck(mp);
1430 /* Quotacheck failed and disabled quotas. */
1435 * If one type of quotas is off, then it will lose its
1436 * quotachecked status, since we won't be doing accounting for
1437 * that type anymore.
1439 if (!XFS_IS_UQUOTA_ON(mp))
1440 mp->m_qflags &= ~XFS_UQUOTA_CHKD;
1441 if (!XFS_IS_GQUOTA_ON(mp))
1442 mp->m_qflags &= ~XFS_GQUOTA_CHKD;
1443 if (!XFS_IS_PQUOTA_ON(mp))
1444 mp->m_qflags &= ~XFS_PQUOTA_CHKD;
1448 * We actually don't have to acquire the m_sb_lock at all.
1449 * This can only be called from mount, and that's single threaded. XXX
1451 spin_lock(&mp->m_sb_lock);
1452 sbf = mp->m_sb.sb_qflags;
1453 mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL;
1454 spin_unlock(&mp->m_sb_lock);
1456 if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) {
1457 if (xfs_sync_sb(mp, false)) {
1459 * We could only have been turning quotas off.
1460 * We aren't in very good shape actually because
1461 * the incore structures are convinced that quotas are
1462 * off, but the on disk superblock doesn't know that !
1464 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp)));
1465 xfs_alert(mp, "%s: Superblock update failed!",
1471 xfs_warn(mp, "Failed to initialize disk quotas.");
1477 * This is called after the superblock has been read in and we're ready to
1478 * iget the quota inodes.
1481 xfs_qm_init_quotainos(
1484 struct xfs_inode *uip = NULL;
1485 struct xfs_inode *gip = NULL;
1486 struct xfs_inode *pip = NULL;
1490 ASSERT(mp->m_quotainfo);
1493 * Get the uquota and gquota inodes
1495 if (xfs_sb_version_hasquota(&mp->m_sb)) {
1496 if (XFS_IS_UQUOTA_ON(mp) &&
1497 mp->m_sb.sb_uquotino != NULLFSINO) {
1498 ASSERT(mp->m_sb.sb_uquotino > 0);
1499 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
1504 if (XFS_IS_GQUOTA_ON(mp) &&
1505 mp->m_sb.sb_gquotino != NULLFSINO) {
1506 ASSERT(mp->m_sb.sb_gquotino > 0);
1507 error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
1512 if (XFS_IS_PQUOTA_ON(mp) &&
1513 mp->m_sb.sb_pquotino != NULLFSINO) {
1514 ASSERT(mp->m_sb.sb_pquotino > 0);
1515 error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
1521 flags |= XFS_QMOPT_SBVERSION;
1525 * Create the three inodes, if they don't exist already. The changes
1526 * made above will get added to a transaction and logged in one of
1527 * the qino_alloc calls below. If the device is readonly,
1528 * temporarily switch to read-write to do this.
1530 if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) {
1531 error = xfs_qm_qino_alloc(mp, &uip,
1532 flags | XFS_QMOPT_UQUOTA);
1536 flags &= ~XFS_QMOPT_SBVERSION;
1538 if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) {
1539 error = xfs_qm_qino_alloc(mp, &gip,
1540 flags | XFS_QMOPT_GQUOTA);
1544 flags &= ~XFS_QMOPT_SBVERSION;
1546 if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) {
1547 error = xfs_qm_qino_alloc(mp, &pip,
1548 flags | XFS_QMOPT_PQUOTA);
1553 mp->m_quotainfo->qi_uquotaip = uip;
1554 mp->m_quotainfo->qi_gquotaip = gip;
1555 mp->m_quotainfo->qi_pquotaip = pip;
1570 xfs_qm_destroy_quotainos(
1571 xfs_quotainfo_t *qi)
1573 if (qi->qi_uquotaip) {
1574 xfs_irele(qi->qi_uquotaip);
1575 qi->qi_uquotaip = NULL; /* paranoia */
1577 if (qi->qi_gquotaip) {
1578 xfs_irele(qi->qi_gquotaip);
1579 qi->qi_gquotaip = NULL;
1581 if (qi->qi_pquotaip) {
1582 xfs_irele(qi->qi_pquotaip);
1583 qi->qi_pquotaip = NULL;
1589 struct xfs_dquot *dqp)
1591 struct xfs_mount *mp = dqp->q_mount;
1592 struct xfs_quotainfo *qi = mp->m_quotainfo;
1594 mutex_lock(&qi->qi_tree_lock);
1595 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags),
1596 be32_to_cpu(dqp->q_core.d_id));
1599 mutex_unlock(&qi->qi_tree_lock);
1601 xfs_qm_dqdestroy(dqp);
1604 /* --------------- utility functions for vnodeops ---------------- */
1608 * Given an inode, a uid, gid and prid make sure that we have
1609 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1610 * quotas by creating this file.
1611 * This also attaches dquot(s) to the given inode after locking it,
1612 * and returns the dquots corresponding to the uid and/or gid.
1614 * in : inode (unlocked)
1615 * out : udquot, gdquot with references taken and unlocked
1619 struct xfs_inode *ip,
1624 struct xfs_dquot **O_udqpp,
1625 struct xfs_dquot **O_gdqpp,
1626 struct xfs_dquot **O_pdqpp)
1628 struct xfs_mount *mp = ip->i_mount;
1629 struct xfs_dquot *uq = NULL;
1630 struct xfs_dquot *gq = NULL;
1631 struct xfs_dquot *pq = NULL;
1635 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1638 lockflags = XFS_ILOCK_EXCL;
1639 xfs_ilock(ip, lockflags);
1641 if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip))
1642 gid = ip->i_d.di_gid;
1645 * Attach the dquot(s) to this inode, doing a dquot allocation
1646 * if necessary. The dquot(s) will not be locked.
1648 if (XFS_NOT_DQATTACHED(mp, ip)) {
1649 error = xfs_qm_dqattach_locked(ip, true);
1651 xfs_iunlock(ip, lockflags);
1656 if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) {
1657 if (ip->i_d.di_uid != uid) {
1659 * What we need is the dquot that has this uid, and
1660 * if we send the inode to dqget, the uid of the inode
1661 * takes priority over what's sent in the uid argument.
1662 * We must unlock inode here before calling dqget if
1663 * we're not sending the inode, because otherwise
1664 * we'll deadlock by doing trans_reserve while
1667 xfs_iunlock(ip, lockflags);
1668 error = xfs_qm_dqget(mp, uid, XFS_DQ_USER, true, &uq);
1670 ASSERT(error != -ENOENT);
1674 * Get the ilock in the right order.
1677 lockflags = XFS_ILOCK_SHARED;
1678 xfs_ilock(ip, lockflags);
1681 * Take an extra reference, because we'll return
1684 ASSERT(ip->i_udquot);
1685 uq = xfs_qm_dqhold(ip->i_udquot);
1688 if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) {
1689 if (ip->i_d.di_gid != gid) {
1690 xfs_iunlock(ip, lockflags);
1691 error = xfs_qm_dqget(mp, gid, XFS_DQ_GROUP, true, &gq);
1693 ASSERT(error != -ENOENT);
1697 lockflags = XFS_ILOCK_SHARED;
1698 xfs_ilock(ip, lockflags);
1700 ASSERT(ip->i_gdquot);
1701 gq = xfs_qm_dqhold(ip->i_gdquot);
1704 if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) {
1705 if (xfs_get_projid(ip) != prid) {
1706 xfs_iunlock(ip, lockflags);
1707 error = xfs_qm_dqget(mp, (xfs_dqid_t)prid, XFS_DQ_PROJ,
1710 ASSERT(error != -ENOENT);
1714 lockflags = XFS_ILOCK_SHARED;
1715 xfs_ilock(ip, lockflags);
1717 ASSERT(ip->i_pdquot);
1718 pq = xfs_qm_dqhold(ip->i_pdquot);
1722 trace_xfs_dquot_dqalloc(ip);
1724 xfs_iunlock(ip, lockflags);
1746 * Actually transfer ownership, and do dquot modifications.
1747 * These were already reserved.
1753 xfs_dquot_t **IO_olddq,
1756 xfs_dquot_t *prevdq;
1757 uint bfield = XFS_IS_REALTIME_INODE(ip) ?
1758 XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT;
1761 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
1762 ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount));
1767 ASSERT(prevdq != newdq);
1769 xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks));
1770 xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1);
1772 /* the sparkling new dquot */
1773 xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks);
1774 xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1);
1777 * Take an extra reference, because the inode is going to keep
1778 * this dquot pointer even after the trans_commit.
1780 *IO_olddq = xfs_qm_dqhold(newdq);
1786 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1789 xfs_qm_vop_chown_reserve(
1790 struct xfs_trans *tp,
1791 struct xfs_inode *ip,
1792 struct xfs_dquot *udqp,
1793 struct xfs_dquot *gdqp,
1794 struct xfs_dquot *pdqp,
1797 struct xfs_mount *mp = ip->i_mount;
1799 unsigned int blkflags, prjflags = 0;
1800 struct xfs_dquot *udq_unres = NULL;
1801 struct xfs_dquot *gdq_unres = NULL;
1802 struct xfs_dquot *pdq_unres = NULL;
1803 struct xfs_dquot *udq_delblks = NULL;
1804 struct xfs_dquot *gdq_delblks = NULL;
1805 struct xfs_dquot *pdq_delblks = NULL;
1809 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
1810 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1812 delblks = ip->i_delayed_blks;
1813 blkflags = XFS_IS_REALTIME_INODE(ip) ?
1814 XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS;
1816 if (XFS_IS_UQUOTA_ON(mp) && udqp &&
1817 ip->i_d.di_uid != be32_to_cpu(udqp->q_core.d_id)) {
1820 * If there are delayed allocation blocks, then we have to
1821 * unreserve those from the old dquot, and add them to the
1825 ASSERT(ip->i_udquot);
1826 udq_unres = ip->i_udquot;
1829 if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp &&
1830 ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id)) {
1833 ASSERT(ip->i_gdquot);
1834 gdq_unres = ip->i_gdquot;
1838 if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp &&
1839 xfs_get_projid(ip) != be32_to_cpu(pdqp->q_core.d_id)) {
1840 prjflags = XFS_QMOPT_ENOSPC;
1843 ASSERT(ip->i_pdquot);
1844 pdq_unres = ip->i_pdquot;
1848 error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount,
1849 udq_delblks, gdq_delblks, pdq_delblks,
1850 ip->i_d.di_nblocks, 1,
1851 flags | blkflags | prjflags);
1856 * Do the delayed blks reservations/unreservations now. Since, these
1857 * are done without the help of a transaction, if a reservation fails
1858 * its previous reservations won't be automatically undone by trans
1859 * code. So, we have to do it manually here.
1863 * Do the reservations first. Unreservation can't fail.
1865 ASSERT(udq_delblks || gdq_delblks || pdq_delblks);
1866 ASSERT(udq_unres || gdq_unres || pdq_unres);
1867 error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
1868 udq_delblks, gdq_delblks, pdq_delblks,
1869 (xfs_qcnt_t)delblks, 0,
1870 flags | blkflags | prjflags);
1873 xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
1874 udq_unres, gdq_unres, pdq_unres,
1875 -((xfs_qcnt_t)delblks), 0, blkflags);
1882 xfs_qm_vop_rename_dqattach(
1883 struct xfs_inode **i_tab)
1885 struct xfs_mount *mp = i_tab[0]->i_mount;
1888 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1891 for (i = 0; (i < 4 && i_tab[i]); i++) {
1892 struct xfs_inode *ip = i_tab[i];
1896 * Watch out for duplicate entries in the table.
1898 if (i == 0 || ip != i_tab[i-1]) {
1899 if (XFS_NOT_DQATTACHED(mp, ip)) {
1900 error = xfs_qm_dqattach(ip);
1910 xfs_qm_vop_create_dqattach(
1911 struct xfs_trans *tp,
1912 struct xfs_inode *ip,
1913 struct xfs_dquot *udqp,
1914 struct xfs_dquot *gdqp,
1915 struct xfs_dquot *pdqp)
1917 struct xfs_mount *mp = tp->t_mountp;
1919 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1922 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
1923 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1925 if (udqp && XFS_IS_UQUOTA_ON(mp)) {
1926 ASSERT(ip->i_udquot == NULL);
1927 ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id));
1929 ip->i_udquot = xfs_qm_dqhold(udqp);
1930 xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1);
1932 if (gdqp && XFS_IS_GQUOTA_ON(mp)) {
1933 ASSERT(ip->i_gdquot == NULL);
1934 ASSERT(ip->i_d.di_gid == be32_to_cpu(gdqp->q_core.d_id));
1935 ip->i_gdquot = xfs_qm_dqhold(gdqp);
1936 xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1);
1938 if (pdqp && XFS_IS_PQUOTA_ON(mp)) {
1939 ASSERT(ip->i_pdquot == NULL);
1940 ASSERT(xfs_get_projid(ip) == be32_to_cpu(pdqp->q_core.d_id));
1942 ip->i_pdquot = xfs_qm_dqhold(pdqp);
1943 xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1);