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1884 lines
45 KiB
1884 lines
45 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
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* Copyright (c) 2000-2005 Silicon Graphics, Inc. |
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* All Rights Reserved. |
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*/ |
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#include "xfs.h" |
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#include "xfs_fs.h" |
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#include "xfs_shared.h" |
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#include "xfs_format.h" |
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#include "xfs_log_format.h" |
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#include "xfs_trans_resv.h" |
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#include "xfs_bit.h" |
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#include "xfs_sb.h" |
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#include "xfs_mount.h" |
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#include "xfs_inode.h" |
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#include "xfs_iwalk.h" |
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#include "xfs_quota.h" |
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#include "xfs_bmap.h" |
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#include "xfs_bmap_util.h" |
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#include "xfs_trans.h" |
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#include "xfs_trans_space.h" |
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#include "xfs_qm.h" |
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#include "xfs_trace.h" |
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#include "xfs_icache.h" |
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#include "xfs_error.h" |
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|
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/* |
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* The global quota manager. There is only one of these for the entire |
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* system, _not_ one per file system. XQM keeps track of the overall |
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* quota functionality, including maintaining the freelist and hash |
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* tables of dquots. |
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*/ |
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STATIC int xfs_qm_init_quotainos(struct xfs_mount *mp); |
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STATIC int xfs_qm_init_quotainfo(struct xfs_mount *mp); |
|
|
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STATIC void xfs_qm_destroy_quotainos(struct xfs_quotainfo *qi); |
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STATIC void xfs_qm_dqfree_one(struct xfs_dquot *dqp); |
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/* |
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* We use the batch lookup interface to iterate over the dquots as it |
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* currently is the only interface into the radix tree code that allows |
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* fuzzy lookups instead of exact matches. Holding the lock over multiple |
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* operations is fine as all callers are used either during mount/umount |
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* or quotaoff. |
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*/ |
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#define XFS_DQ_LOOKUP_BATCH 32 |
|
|
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STATIC int |
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xfs_qm_dquot_walk( |
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struct xfs_mount *mp, |
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xfs_dqtype_t type, |
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int (*execute)(struct xfs_dquot *dqp, void *data), |
|
void *data) |
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{ |
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struct xfs_quotainfo *qi = mp->m_quotainfo; |
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struct radix_tree_root *tree = xfs_dquot_tree(qi, type); |
|
uint32_t next_index; |
|
int last_error = 0; |
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int skipped; |
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int nr_found; |
|
|
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restart: |
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skipped = 0; |
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next_index = 0; |
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nr_found = 0; |
|
|
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while (1) { |
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struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH]; |
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int error = 0; |
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int i; |
|
|
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mutex_lock(&qi->qi_tree_lock); |
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nr_found = radix_tree_gang_lookup(tree, (void **)batch, |
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next_index, XFS_DQ_LOOKUP_BATCH); |
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if (!nr_found) { |
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mutex_unlock(&qi->qi_tree_lock); |
|
break; |
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} |
|
|
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for (i = 0; i < nr_found; i++) { |
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struct xfs_dquot *dqp = batch[i]; |
|
|
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next_index = dqp->q_id + 1; |
|
|
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error = execute(batch[i], data); |
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if (error == -EAGAIN) { |
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skipped++; |
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continue; |
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} |
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if (error && last_error != -EFSCORRUPTED) |
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last_error = error; |
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} |
|
|
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mutex_unlock(&qi->qi_tree_lock); |
|
|
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/* bail out if the filesystem is corrupted. */ |
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if (last_error == -EFSCORRUPTED) { |
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skipped = 0; |
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break; |
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} |
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/* we're done if id overflows back to zero */ |
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if (!next_index) |
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break; |
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} |
|
|
|
if (skipped) { |
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delay(1); |
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goto restart; |
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} |
|
|
|
return last_error; |
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} |
|
|
|
|
|
/* |
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* Purge a dquot from all tracking data structures and free it. |
|
*/ |
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STATIC int |
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xfs_qm_dqpurge( |
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struct xfs_dquot *dqp, |
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void *data) |
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{ |
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struct xfs_mount *mp = dqp->q_mount; |
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struct xfs_quotainfo *qi = mp->m_quotainfo; |
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int error = -EAGAIN; |
|
|
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xfs_dqlock(dqp); |
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if ((dqp->q_flags & XFS_DQFLAG_FREEING) || dqp->q_nrefs != 0) |
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goto out_unlock; |
|
|
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dqp->q_flags |= XFS_DQFLAG_FREEING; |
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|
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xfs_dqflock(dqp); |
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|
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/* |
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* If we are turning this type of quotas off, we don't care |
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* about the dirty metadata sitting in this dquot. OTOH, if |
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* we're unmounting, we do care, so we flush it and wait. |
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*/ |
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if (XFS_DQ_IS_DIRTY(dqp)) { |
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struct xfs_buf *bp = NULL; |
|
|
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/* |
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* We don't care about getting disk errors here. We need |
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* to purge this dquot anyway, so we go ahead regardless. |
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*/ |
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error = xfs_qm_dqflush(dqp, &bp); |
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if (!error) { |
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error = xfs_bwrite(bp); |
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xfs_buf_relse(bp); |
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} else if (error == -EAGAIN) { |
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dqp->q_flags &= ~XFS_DQFLAG_FREEING; |
|
goto out_unlock; |
|
} |
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xfs_dqflock(dqp); |
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} |
|
|
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ASSERT(atomic_read(&dqp->q_pincount) == 0); |
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ASSERT(XFS_FORCED_SHUTDOWN(mp) || |
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!test_bit(XFS_LI_IN_AIL, &dqp->q_logitem.qli_item.li_flags)); |
|
|
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xfs_dqfunlock(dqp); |
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xfs_dqunlock(dqp); |
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|
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radix_tree_delete(xfs_dquot_tree(qi, xfs_dquot_type(dqp)), dqp->q_id); |
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qi->qi_dquots--; |
|
|
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/* |
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* We move dquots to the freelist as soon as their reference count |
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* hits zero, so it really should be on the freelist here. |
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*/ |
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ASSERT(!list_empty(&dqp->q_lru)); |
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list_lru_del(&qi->qi_lru, &dqp->q_lru); |
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XFS_STATS_DEC(mp, xs_qm_dquot_unused); |
|
|
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xfs_qm_dqdestroy(dqp); |
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return 0; |
|
|
|
out_unlock: |
|
xfs_dqunlock(dqp); |
|
return error; |
|
} |
|
|
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/* |
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* Purge the dquot cache. |
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*/ |
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void |
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xfs_qm_dqpurge_all( |
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struct xfs_mount *mp, |
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uint flags) |
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{ |
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if (flags & XFS_QMOPT_UQUOTA) |
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xfs_qm_dquot_walk(mp, XFS_DQTYPE_USER, xfs_qm_dqpurge, NULL); |
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if (flags & XFS_QMOPT_GQUOTA) |
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xfs_qm_dquot_walk(mp, XFS_DQTYPE_GROUP, xfs_qm_dqpurge, NULL); |
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if (flags & XFS_QMOPT_PQUOTA) |
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xfs_qm_dquot_walk(mp, XFS_DQTYPE_PROJ, xfs_qm_dqpurge, NULL); |
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} |
|
|
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/* |
|
* Just destroy the quotainfo structure. |
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*/ |
|
void |
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xfs_qm_unmount( |
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struct xfs_mount *mp) |
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{ |
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if (mp->m_quotainfo) { |
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xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
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xfs_qm_destroy_quotainfo(mp); |
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} |
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} |
|
|
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/* |
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* Called from the vfsops layer. |
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*/ |
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void |
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xfs_qm_unmount_quotas( |
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xfs_mount_t *mp) |
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{ |
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/* |
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* Release the dquots that root inode, et al might be holding, |
|
* before we flush quotas and blow away the quotainfo structure. |
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*/ |
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ASSERT(mp->m_rootip); |
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xfs_qm_dqdetach(mp->m_rootip); |
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if (mp->m_rbmip) |
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xfs_qm_dqdetach(mp->m_rbmip); |
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if (mp->m_rsumip) |
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xfs_qm_dqdetach(mp->m_rsumip); |
|
|
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/* |
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* Release the quota inodes. |
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*/ |
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if (mp->m_quotainfo) { |
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if (mp->m_quotainfo->qi_uquotaip) { |
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xfs_irele(mp->m_quotainfo->qi_uquotaip); |
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mp->m_quotainfo->qi_uquotaip = NULL; |
|
} |
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if (mp->m_quotainfo->qi_gquotaip) { |
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xfs_irele(mp->m_quotainfo->qi_gquotaip); |
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mp->m_quotainfo->qi_gquotaip = NULL; |
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} |
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if (mp->m_quotainfo->qi_pquotaip) { |
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xfs_irele(mp->m_quotainfo->qi_pquotaip); |
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mp->m_quotainfo->qi_pquotaip = NULL; |
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} |
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} |
|
} |
|
|
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STATIC int |
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xfs_qm_dqattach_one( |
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struct xfs_inode *ip, |
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xfs_dqtype_t type, |
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bool doalloc, |
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struct xfs_dquot **IO_idqpp) |
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{ |
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struct xfs_dquot *dqp; |
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int error; |
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|
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ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
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error = 0; |
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|
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/* |
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* See if we already have it in the inode itself. IO_idqpp is &i_udquot |
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* or &i_gdquot. This made the code look weird, but made the logic a lot |
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* simpler. |
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*/ |
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dqp = *IO_idqpp; |
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if (dqp) { |
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trace_xfs_dqattach_found(dqp); |
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return 0; |
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} |
|
|
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/* |
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* Find the dquot from somewhere. This bumps the reference count of |
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* dquot and returns it locked. This can return ENOENT if dquot didn't |
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* exist on disk and we didn't ask it to allocate; ESRCH if quotas got |
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* turned off suddenly. |
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*/ |
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error = xfs_qm_dqget_inode(ip, type, doalloc, &dqp); |
|
if (error) |
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return error; |
|
|
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trace_xfs_dqattach_get(dqp); |
|
|
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/* |
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* dqget may have dropped and re-acquired the ilock, but it guarantees |
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* that the dquot returned is the one that should go in the inode. |
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*/ |
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*IO_idqpp = dqp; |
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xfs_dqunlock(dqp); |
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return 0; |
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} |
|
|
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static bool |
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xfs_qm_need_dqattach( |
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struct xfs_inode *ip) |
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{ |
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struct xfs_mount *mp = ip->i_mount; |
|
|
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if (!XFS_IS_QUOTA_RUNNING(mp)) |
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return false; |
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if (!XFS_IS_QUOTA_ON(mp)) |
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return false; |
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if (!XFS_NOT_DQATTACHED(mp, ip)) |
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return false; |
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if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino)) |
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return false; |
|
return true; |
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} |
|
|
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/* |
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* Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
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* into account. |
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* If @doalloc is true, the dquot(s) will be allocated if needed. |
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* Inode may get unlocked and relocked in here, and the caller must deal with |
|
* the consequences. |
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*/ |
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int |
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xfs_qm_dqattach_locked( |
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xfs_inode_t *ip, |
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bool doalloc) |
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{ |
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xfs_mount_t *mp = ip->i_mount; |
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int error = 0; |
|
|
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if (!xfs_qm_need_dqattach(ip)) |
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return 0; |
|
|
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ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
|
|
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if (XFS_IS_UQUOTA_ON(mp) && !ip->i_udquot) { |
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error = xfs_qm_dqattach_one(ip, XFS_DQTYPE_USER, |
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doalloc, &ip->i_udquot); |
|
if (error) |
|
goto done; |
|
ASSERT(ip->i_udquot); |
|
} |
|
|
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if (XFS_IS_GQUOTA_ON(mp) && !ip->i_gdquot) { |
|
error = xfs_qm_dqattach_one(ip, XFS_DQTYPE_GROUP, |
|
doalloc, &ip->i_gdquot); |
|
if (error) |
|
goto done; |
|
ASSERT(ip->i_gdquot); |
|
} |
|
|
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if (XFS_IS_PQUOTA_ON(mp) && !ip->i_pdquot) { |
|
error = xfs_qm_dqattach_one(ip, XFS_DQTYPE_PROJ, |
|
doalloc, &ip->i_pdquot); |
|
if (error) |
|
goto done; |
|
ASSERT(ip->i_pdquot); |
|
} |
|
|
|
done: |
|
/* |
|
* Don't worry about the dquots that we may have attached before any |
|
* error - they'll get detached later if it has not already been done. |
|
*/ |
|
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
|
return error; |
|
} |
|
|
|
int |
|
xfs_qm_dqattach( |
|
struct xfs_inode *ip) |
|
{ |
|
int error; |
|
|
|
if (!xfs_qm_need_dqattach(ip)) |
|
return 0; |
|
|
|
xfs_ilock(ip, XFS_ILOCK_EXCL); |
|
error = xfs_qm_dqattach_locked(ip, false); |
|
xfs_iunlock(ip, XFS_ILOCK_EXCL); |
|
|
|
return error; |
|
} |
|
|
|
/* |
|
* Release dquots (and their references) if any. |
|
* The inode should be locked EXCL except when this's called by |
|
* xfs_ireclaim. |
|
*/ |
|
void |
|
xfs_qm_dqdetach( |
|
xfs_inode_t *ip) |
|
{ |
|
if (!(ip->i_udquot || ip->i_gdquot || ip->i_pdquot)) |
|
return; |
|
|
|
trace_xfs_dquot_dqdetach(ip); |
|
|
|
ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino)); |
|
if (ip->i_udquot) { |
|
xfs_qm_dqrele(ip->i_udquot); |
|
ip->i_udquot = NULL; |
|
} |
|
if (ip->i_gdquot) { |
|
xfs_qm_dqrele(ip->i_gdquot); |
|
ip->i_gdquot = NULL; |
|
} |
|
if (ip->i_pdquot) { |
|
xfs_qm_dqrele(ip->i_pdquot); |
|
ip->i_pdquot = NULL; |
|
} |
|
} |
|
|
|
struct xfs_qm_isolate { |
|
struct list_head buffers; |
|
struct list_head dispose; |
|
}; |
|
|
|
static enum lru_status |
|
xfs_qm_dquot_isolate( |
|
struct list_head *item, |
|
struct list_lru_one *lru, |
|
spinlock_t *lru_lock, |
|
void *arg) |
|
__releases(lru_lock) __acquires(lru_lock) |
|
{ |
|
struct xfs_dquot *dqp = container_of(item, |
|
struct xfs_dquot, q_lru); |
|
struct xfs_qm_isolate *isol = arg; |
|
|
|
if (!xfs_dqlock_nowait(dqp)) |
|
goto out_miss_busy; |
|
|
|
/* |
|
* This dquot has acquired a reference in the meantime remove it from |
|
* the freelist and try again. |
|
*/ |
|
if (dqp->q_nrefs) { |
|
xfs_dqunlock(dqp); |
|
XFS_STATS_INC(dqp->q_mount, xs_qm_dqwants); |
|
|
|
trace_xfs_dqreclaim_want(dqp); |
|
list_lru_isolate(lru, &dqp->q_lru); |
|
XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused); |
|
return LRU_REMOVED; |
|
} |
|
|
|
/* |
|
* If the dquot is dirty, flush it. If it's already being flushed, just |
|
* skip it so there is time for the IO to complete before we try to |
|
* reclaim it again on the next LRU pass. |
|
*/ |
|
if (!xfs_dqflock_nowait(dqp)) { |
|
xfs_dqunlock(dqp); |
|
goto out_miss_busy; |
|
} |
|
|
|
if (XFS_DQ_IS_DIRTY(dqp)) { |
|
struct xfs_buf *bp = NULL; |
|
int error; |
|
|
|
trace_xfs_dqreclaim_dirty(dqp); |
|
|
|
/* we have to drop the LRU lock to flush the dquot */ |
|
spin_unlock(lru_lock); |
|
|
|
error = xfs_qm_dqflush(dqp, &bp); |
|
if (error) |
|
goto out_unlock_dirty; |
|
|
|
xfs_buf_delwri_queue(bp, &isol->buffers); |
|
xfs_buf_relse(bp); |
|
goto out_unlock_dirty; |
|
} |
|
xfs_dqfunlock(dqp); |
|
|
|
/* |
|
* Prevent lookups now that we are past the point of no return. |
|
*/ |
|
dqp->q_flags |= XFS_DQFLAG_FREEING; |
|
xfs_dqunlock(dqp); |
|
|
|
ASSERT(dqp->q_nrefs == 0); |
|
list_lru_isolate_move(lru, &dqp->q_lru, &isol->dispose); |
|
XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused); |
|
trace_xfs_dqreclaim_done(dqp); |
|
XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaims); |
|
return LRU_REMOVED; |
|
|
|
out_miss_busy: |
|
trace_xfs_dqreclaim_busy(dqp); |
|
XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses); |
|
return LRU_SKIP; |
|
|
|
out_unlock_dirty: |
|
trace_xfs_dqreclaim_busy(dqp); |
|
XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses); |
|
xfs_dqunlock(dqp); |
|
spin_lock(lru_lock); |
|
return LRU_RETRY; |
|
} |
|
|
|
static unsigned long |
|
xfs_qm_shrink_scan( |
|
struct shrinker *shrink, |
|
struct shrink_control *sc) |
|
{ |
|
struct xfs_quotainfo *qi = container_of(shrink, |
|
struct xfs_quotainfo, qi_shrinker); |
|
struct xfs_qm_isolate isol; |
|
unsigned long freed; |
|
int error; |
|
|
|
if ((sc->gfp_mask & (__GFP_FS|__GFP_DIRECT_RECLAIM)) != (__GFP_FS|__GFP_DIRECT_RECLAIM)) |
|
return 0; |
|
|
|
INIT_LIST_HEAD(&isol.buffers); |
|
INIT_LIST_HEAD(&isol.dispose); |
|
|
|
freed = list_lru_shrink_walk(&qi->qi_lru, sc, |
|
xfs_qm_dquot_isolate, &isol); |
|
|
|
error = xfs_buf_delwri_submit(&isol.buffers); |
|
if (error) |
|
xfs_warn(NULL, "%s: dquot reclaim failed", __func__); |
|
|
|
while (!list_empty(&isol.dispose)) { |
|
struct xfs_dquot *dqp; |
|
|
|
dqp = list_first_entry(&isol.dispose, struct xfs_dquot, q_lru); |
|
list_del_init(&dqp->q_lru); |
|
xfs_qm_dqfree_one(dqp); |
|
} |
|
|
|
return freed; |
|
} |
|
|
|
static unsigned long |
|
xfs_qm_shrink_count( |
|
struct shrinker *shrink, |
|
struct shrink_control *sc) |
|
{ |
|
struct xfs_quotainfo *qi = container_of(shrink, |
|
struct xfs_quotainfo, qi_shrinker); |
|
|
|
return list_lru_shrink_count(&qi->qi_lru, sc); |
|
} |
|
|
|
STATIC void |
|
xfs_qm_set_defquota( |
|
struct xfs_mount *mp, |
|
xfs_dqtype_t type, |
|
struct xfs_quotainfo *qinf) |
|
{ |
|
struct xfs_dquot *dqp; |
|
struct xfs_def_quota *defq; |
|
int error; |
|
|
|
error = xfs_qm_dqget_uncached(mp, 0, type, &dqp); |
|
if (error) |
|
return; |
|
|
|
defq = xfs_get_defquota(qinf, xfs_dquot_type(dqp)); |
|
|
|
/* |
|
* Timers and warnings have been already set, let's just set the |
|
* default limits for this quota type |
|
*/ |
|
defq->blk.hard = dqp->q_blk.hardlimit; |
|
defq->blk.soft = dqp->q_blk.softlimit; |
|
defq->ino.hard = dqp->q_ino.hardlimit; |
|
defq->ino.soft = dqp->q_ino.softlimit; |
|
defq->rtb.hard = dqp->q_rtb.hardlimit; |
|
defq->rtb.soft = dqp->q_rtb.softlimit; |
|
xfs_qm_dqdestroy(dqp); |
|
} |
|
|
|
/* Initialize quota time limits from the root dquot. */ |
|
static void |
|
xfs_qm_init_timelimits( |
|
struct xfs_mount *mp, |
|
xfs_dqtype_t type) |
|
{ |
|
struct xfs_quotainfo *qinf = mp->m_quotainfo; |
|
struct xfs_def_quota *defq; |
|
struct xfs_dquot *dqp; |
|
int error; |
|
|
|
defq = xfs_get_defquota(qinf, type); |
|
|
|
defq->blk.time = XFS_QM_BTIMELIMIT; |
|
defq->ino.time = XFS_QM_ITIMELIMIT; |
|
defq->rtb.time = XFS_QM_RTBTIMELIMIT; |
|
defq->blk.warn = XFS_QM_BWARNLIMIT; |
|
defq->ino.warn = XFS_QM_IWARNLIMIT; |
|
defq->rtb.warn = XFS_QM_RTBWARNLIMIT; |
|
|
|
/* |
|
* We try to get the limits from the superuser's limits fields. |
|
* This is quite hacky, but it is standard quota practice. |
|
* |
|
* Since we may not have done a quotacheck by this point, just read |
|
* the dquot without attaching it to any hashtables or lists. |
|
*/ |
|
error = xfs_qm_dqget_uncached(mp, 0, type, &dqp); |
|
if (error) |
|
return; |
|
|
|
/* |
|
* The warnings and timers set the grace period given to |
|
* a user or group before he or she can not perform any |
|
* more writing. If it is zero, a default is used. |
|
*/ |
|
if (dqp->q_blk.timer) |
|
defq->blk.time = dqp->q_blk.timer; |
|
if (dqp->q_ino.timer) |
|
defq->ino.time = dqp->q_ino.timer; |
|
if (dqp->q_rtb.timer) |
|
defq->rtb.time = dqp->q_rtb.timer; |
|
if (dqp->q_blk.warnings) |
|
defq->blk.warn = dqp->q_blk.warnings; |
|
if (dqp->q_ino.warnings) |
|
defq->ino.warn = dqp->q_ino.warnings; |
|
if (dqp->q_rtb.warnings) |
|
defq->rtb.warn = dqp->q_rtb.warnings; |
|
|
|
xfs_qm_dqdestroy(dqp); |
|
} |
|
|
|
/* |
|
* This initializes all the quota information that's kept in the |
|
* mount structure |
|
*/ |
|
STATIC int |
|
xfs_qm_init_quotainfo( |
|
struct xfs_mount *mp) |
|
{ |
|
struct xfs_quotainfo *qinf; |
|
int error; |
|
|
|
ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
|
|
|
qinf = mp->m_quotainfo = kmem_zalloc(sizeof(struct xfs_quotainfo), 0); |
|
|
|
error = list_lru_init(&qinf->qi_lru); |
|
if (error) |
|
goto out_free_qinf; |
|
|
|
/* |
|
* See if quotainodes are setup, and if not, allocate them, |
|
* and change the superblock accordingly. |
|
*/ |
|
error = xfs_qm_init_quotainos(mp); |
|
if (error) |
|
goto out_free_lru; |
|
|
|
INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS); |
|
INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS); |
|
INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS); |
|
mutex_init(&qinf->qi_tree_lock); |
|
|
|
/* mutex used to serialize quotaoffs */ |
|
mutex_init(&qinf->qi_quotaofflock); |
|
|
|
/* Precalc some constants */ |
|
qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); |
|
qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(qinf->qi_dqchunklen); |
|
if (xfs_sb_version_hasbigtime(&mp->m_sb)) { |
|
qinf->qi_expiry_min = |
|
xfs_dq_bigtime_to_unix(XFS_DQ_BIGTIME_EXPIRY_MIN); |
|
qinf->qi_expiry_max = |
|
xfs_dq_bigtime_to_unix(XFS_DQ_BIGTIME_EXPIRY_MAX); |
|
} else { |
|
qinf->qi_expiry_min = XFS_DQ_LEGACY_EXPIRY_MIN; |
|
qinf->qi_expiry_max = XFS_DQ_LEGACY_EXPIRY_MAX; |
|
} |
|
trace_xfs_quota_expiry_range(mp, qinf->qi_expiry_min, |
|
qinf->qi_expiry_max); |
|
|
|
mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); |
|
|
|
xfs_qm_init_timelimits(mp, XFS_DQTYPE_USER); |
|
xfs_qm_init_timelimits(mp, XFS_DQTYPE_GROUP); |
|
xfs_qm_init_timelimits(mp, XFS_DQTYPE_PROJ); |
|
|
|
if (XFS_IS_UQUOTA_RUNNING(mp)) |
|
xfs_qm_set_defquota(mp, XFS_DQTYPE_USER, qinf); |
|
if (XFS_IS_GQUOTA_RUNNING(mp)) |
|
xfs_qm_set_defquota(mp, XFS_DQTYPE_GROUP, qinf); |
|
if (XFS_IS_PQUOTA_RUNNING(mp)) |
|
xfs_qm_set_defquota(mp, XFS_DQTYPE_PROJ, qinf); |
|
|
|
qinf->qi_shrinker.count_objects = xfs_qm_shrink_count; |
|
qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan; |
|
qinf->qi_shrinker.seeks = DEFAULT_SEEKS; |
|
qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE; |
|
|
|
error = register_shrinker(&qinf->qi_shrinker); |
|
if (error) |
|
goto out_free_inos; |
|
|
|
return 0; |
|
|
|
out_free_inos: |
|
mutex_destroy(&qinf->qi_quotaofflock); |
|
mutex_destroy(&qinf->qi_tree_lock); |
|
xfs_qm_destroy_quotainos(qinf); |
|
out_free_lru: |
|
list_lru_destroy(&qinf->qi_lru); |
|
out_free_qinf: |
|
kmem_free(qinf); |
|
mp->m_quotainfo = NULL; |
|
return error; |
|
} |
|
|
|
/* |
|
* Gets called when unmounting a filesystem or when all quotas get |
|
* turned off. |
|
* This purges the quota inodes, destroys locks and frees itself. |
|
*/ |
|
void |
|
xfs_qm_destroy_quotainfo( |
|
struct xfs_mount *mp) |
|
{ |
|
struct xfs_quotainfo *qi; |
|
|
|
qi = mp->m_quotainfo; |
|
ASSERT(qi != NULL); |
|
|
|
unregister_shrinker(&qi->qi_shrinker); |
|
list_lru_destroy(&qi->qi_lru); |
|
xfs_qm_destroy_quotainos(qi); |
|
mutex_destroy(&qi->qi_tree_lock); |
|
mutex_destroy(&qi->qi_quotaofflock); |
|
kmem_free(qi); |
|
mp->m_quotainfo = NULL; |
|
} |
|
|
|
/* |
|
* Create an inode and return with a reference already taken, but unlocked |
|
* This is how we create quota inodes |
|
*/ |
|
STATIC int |
|
xfs_qm_qino_alloc( |
|
struct xfs_mount *mp, |
|
struct xfs_inode **ipp, |
|
unsigned int flags) |
|
{ |
|
struct xfs_trans *tp; |
|
int error; |
|
bool need_alloc = true; |
|
|
|
*ipp = NULL; |
|
/* |
|
* With superblock that doesn't have separate pquotino, we |
|
* share an inode between gquota and pquota. If the on-disk |
|
* superblock has GQUOTA and the filesystem is now mounted |
|
* with PQUOTA, just use sb_gquotino for sb_pquotino and |
|
* vice-versa. |
|
*/ |
|
if (!xfs_sb_version_has_pquotino(&mp->m_sb) && |
|
(flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) { |
|
xfs_ino_t ino = NULLFSINO; |
|
|
|
if ((flags & XFS_QMOPT_PQUOTA) && |
|
(mp->m_sb.sb_gquotino != NULLFSINO)) { |
|
ino = mp->m_sb.sb_gquotino; |
|
if (XFS_IS_CORRUPT(mp, |
|
mp->m_sb.sb_pquotino != NULLFSINO)) |
|
return -EFSCORRUPTED; |
|
} else if ((flags & XFS_QMOPT_GQUOTA) && |
|
(mp->m_sb.sb_pquotino != NULLFSINO)) { |
|
ino = mp->m_sb.sb_pquotino; |
|
if (XFS_IS_CORRUPT(mp, |
|
mp->m_sb.sb_gquotino != NULLFSINO)) |
|
return -EFSCORRUPTED; |
|
} |
|
if (ino != NULLFSINO) { |
|
error = xfs_iget(mp, NULL, ino, 0, 0, ipp); |
|
if (error) |
|
return error; |
|
mp->m_sb.sb_gquotino = NULLFSINO; |
|
mp->m_sb.sb_pquotino = NULLFSINO; |
|
need_alloc = false; |
|
} |
|
} |
|
|
|
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_create, |
|
need_alloc ? XFS_QM_QINOCREATE_SPACE_RES(mp) : 0, |
|
0, 0, &tp); |
|
if (error) |
|
return error; |
|
|
|
if (need_alloc) { |
|
error = xfs_dir_ialloc(&init_user_ns, &tp, NULL, S_IFREG, 1, 0, |
|
0, false, ipp); |
|
if (error) { |
|
xfs_trans_cancel(tp); |
|
return error; |
|
} |
|
} |
|
|
|
/* |
|
* Make the changes in the superblock, and log those too. |
|
* sbfields arg may contain fields other than *QUOTINO; |
|
* VERSIONNUM for example. |
|
*/ |
|
spin_lock(&mp->m_sb_lock); |
|
if (flags & XFS_QMOPT_SBVERSION) { |
|
ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
|
|
|
xfs_sb_version_addquota(&mp->m_sb); |
|
mp->m_sb.sb_uquotino = NULLFSINO; |
|
mp->m_sb.sb_gquotino = NULLFSINO; |
|
mp->m_sb.sb_pquotino = NULLFSINO; |
|
|
|
/* qflags will get updated fully _after_ quotacheck */ |
|
mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT; |
|
} |
|
if (flags & XFS_QMOPT_UQUOTA) |
|
mp->m_sb.sb_uquotino = (*ipp)->i_ino; |
|
else if (flags & XFS_QMOPT_GQUOTA) |
|
mp->m_sb.sb_gquotino = (*ipp)->i_ino; |
|
else |
|
mp->m_sb.sb_pquotino = (*ipp)->i_ino; |
|
spin_unlock(&mp->m_sb_lock); |
|
xfs_log_sb(tp); |
|
|
|
error = xfs_trans_commit(tp); |
|
if (error) { |
|
ASSERT(XFS_FORCED_SHUTDOWN(mp)); |
|
xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
|
} |
|
if (need_alloc) |
|
xfs_finish_inode_setup(*ipp); |
|
return error; |
|
} |
|
|
|
|
|
STATIC void |
|
xfs_qm_reset_dqcounts( |
|
struct xfs_mount *mp, |
|
struct xfs_buf *bp, |
|
xfs_dqid_t id, |
|
xfs_dqtype_t type) |
|
{ |
|
struct xfs_dqblk *dqb; |
|
int j; |
|
|
|
trace_xfs_reset_dqcounts(bp, _RET_IP_); |
|
|
|
/* |
|
* Reset all counters and timers. They'll be |
|
* started afresh by xfs_qm_quotacheck. |
|
*/ |
|
#ifdef DEBUG |
|
j = (int)XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) / |
|
sizeof(xfs_dqblk_t); |
|
ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
|
#endif |
|
dqb = bp->b_addr; |
|
for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
|
struct xfs_disk_dquot *ddq; |
|
|
|
ddq = (struct xfs_disk_dquot *)&dqb[j]; |
|
|
|
/* |
|
* Do a sanity check, and if needed, repair the dqblk. Don't |
|
* output any warnings because it's perfectly possible to |
|
* find uninitialised dquot blks. See comment in |
|
* xfs_dquot_verify. |
|
*/ |
|
if (xfs_dqblk_verify(mp, &dqb[j], id + j) || |
|
(dqb[j].dd_diskdq.d_type & XFS_DQTYPE_REC_MASK) != type) |
|
xfs_dqblk_repair(mp, &dqb[j], id + j, type); |
|
|
|
/* |
|
* Reset type in case we are reusing group quota file for |
|
* project quotas or vice versa |
|
*/ |
|
ddq->d_type = type; |
|
ddq->d_bcount = 0; |
|
ddq->d_icount = 0; |
|
ddq->d_rtbcount = 0; |
|
|
|
/* |
|
* dquot id 0 stores the default grace period and the maximum |
|
* warning limit that were set by the administrator, so we |
|
* should not reset them. |
|
*/ |
|
if (ddq->d_id != 0) { |
|
ddq->d_btimer = 0; |
|
ddq->d_itimer = 0; |
|
ddq->d_rtbtimer = 0; |
|
ddq->d_bwarns = 0; |
|
ddq->d_iwarns = 0; |
|
ddq->d_rtbwarns = 0; |
|
if (xfs_sb_version_hasbigtime(&mp->m_sb)) |
|
ddq->d_type |= XFS_DQTYPE_BIGTIME; |
|
} |
|
|
|
if (xfs_sb_version_hascrc(&mp->m_sb)) { |
|
xfs_update_cksum((char *)&dqb[j], |
|
sizeof(struct xfs_dqblk), |
|
XFS_DQUOT_CRC_OFF); |
|
} |
|
} |
|
} |
|
|
|
STATIC int |
|
xfs_qm_reset_dqcounts_all( |
|
struct xfs_mount *mp, |
|
xfs_dqid_t firstid, |
|
xfs_fsblock_t bno, |
|
xfs_filblks_t blkcnt, |
|
xfs_dqtype_t type, |
|
struct list_head *buffer_list) |
|
{ |
|
struct xfs_buf *bp; |
|
int error = 0; |
|
|
|
ASSERT(blkcnt > 0); |
|
|
|
/* |
|
* Blkcnt arg can be a very big number, and might even be |
|
* larger than the log itself. So, we have to break it up into |
|
* manageable-sized transactions. |
|
* Note that we don't start a permanent transaction here; we might |
|
* not be able to get a log reservation for the whole thing up front, |
|
* and we don't really care to either, because we just discard |
|
* everything if we were to crash in the middle of this loop. |
|
*/ |
|
while (blkcnt--) { |
|
error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, |
|
XFS_FSB_TO_DADDR(mp, bno), |
|
mp->m_quotainfo->qi_dqchunklen, 0, &bp, |
|
&xfs_dquot_buf_ops); |
|
|
|
/* |
|
* CRC and validation errors will return a EFSCORRUPTED here. If |
|
* this occurs, re-read without CRC validation so that we can |
|
* repair the damage via xfs_qm_reset_dqcounts(). This process |
|
* will leave a trace in the log indicating corruption has |
|
* been detected. |
|
*/ |
|
if (error == -EFSCORRUPTED) { |
|
error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, |
|
XFS_FSB_TO_DADDR(mp, bno), |
|
mp->m_quotainfo->qi_dqchunklen, 0, &bp, |
|
NULL); |
|
} |
|
|
|
if (error) |
|
break; |
|
|
|
/* |
|
* A corrupt buffer might not have a verifier attached, so |
|
* make sure we have the correct one attached before writeback |
|
* occurs. |
|
*/ |
|
bp->b_ops = &xfs_dquot_buf_ops; |
|
xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
|
xfs_buf_delwri_queue(bp, buffer_list); |
|
xfs_buf_relse(bp); |
|
|
|
/* goto the next block. */ |
|
bno++; |
|
firstid += mp->m_quotainfo->qi_dqperchunk; |
|
} |
|
|
|
return error; |
|
} |
|
|
|
/* |
|
* Iterate over all allocated dquot blocks in this quota inode, zeroing all |
|
* counters for every chunk of dquots that we find. |
|
*/ |
|
STATIC int |
|
xfs_qm_reset_dqcounts_buf( |
|
struct xfs_mount *mp, |
|
struct xfs_inode *qip, |
|
xfs_dqtype_t type, |
|
struct list_head *buffer_list) |
|
{ |
|
struct xfs_bmbt_irec *map; |
|
int i, nmaps; /* number of map entries */ |
|
int error; /* return value */ |
|
xfs_fileoff_t lblkno; |
|
xfs_filblks_t maxlblkcnt; |
|
xfs_dqid_t firstid; |
|
xfs_fsblock_t rablkno; |
|
xfs_filblks_t rablkcnt; |
|
|
|
error = 0; |
|
/* |
|
* This looks racy, but we can't keep an inode lock across a |
|
* trans_reserve. But, this gets called during quotacheck, and that |
|
* happens only at mount time which is single threaded. |
|
*/ |
|
if (qip->i_nblocks == 0) |
|
return 0; |
|
|
|
map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), 0); |
|
|
|
lblkno = 0; |
|
maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); |
|
do { |
|
uint lock_mode; |
|
|
|
nmaps = XFS_DQITER_MAP_SIZE; |
|
/* |
|
* We aren't changing the inode itself. Just changing |
|
* some of its data. No new blocks are added here, and |
|
* the inode is never added to the transaction. |
|
*/ |
|
lock_mode = xfs_ilock_data_map_shared(qip); |
|
error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
|
map, &nmaps, 0); |
|
xfs_iunlock(qip, lock_mode); |
|
if (error) |
|
break; |
|
|
|
ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); |
|
for (i = 0; i < nmaps; i++) { |
|
ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); |
|
ASSERT(map[i].br_blockcount); |
|
|
|
|
|
lblkno += map[i].br_blockcount; |
|
|
|
if (map[i].br_startblock == HOLESTARTBLOCK) |
|
continue; |
|
|
|
firstid = (xfs_dqid_t) map[i].br_startoff * |
|
mp->m_quotainfo->qi_dqperchunk; |
|
/* |
|
* Do a read-ahead on the next extent. |
|
*/ |
|
if ((i+1 < nmaps) && |
|
(map[i+1].br_startblock != HOLESTARTBLOCK)) { |
|
rablkcnt = map[i+1].br_blockcount; |
|
rablkno = map[i+1].br_startblock; |
|
while (rablkcnt--) { |
|
xfs_buf_readahead(mp->m_ddev_targp, |
|
XFS_FSB_TO_DADDR(mp, rablkno), |
|
mp->m_quotainfo->qi_dqchunklen, |
|
&xfs_dquot_buf_ops); |
|
rablkno++; |
|
} |
|
} |
|
/* |
|
* Iterate thru all the blks in the extent and |
|
* reset the counters of all the dquots inside them. |
|
*/ |
|
error = xfs_qm_reset_dqcounts_all(mp, firstid, |
|
map[i].br_startblock, |
|
map[i].br_blockcount, |
|
type, buffer_list); |
|
if (error) |
|
goto out; |
|
} |
|
} while (nmaps > 0); |
|
|
|
out: |
|
kmem_free(map); |
|
return error; |
|
} |
|
|
|
/* |
|
* Called by dqusage_adjust in doing a quotacheck. |
|
* |
|
* Given the inode, and a dquot id this updates both the incore dqout as well |
|
* as the buffer copy. This is so that once the quotacheck is done, we can |
|
* just log all the buffers, as opposed to logging numerous updates to |
|
* individual dquots. |
|
*/ |
|
STATIC int |
|
xfs_qm_quotacheck_dqadjust( |
|
struct xfs_inode *ip, |
|
xfs_dqtype_t type, |
|
xfs_qcnt_t nblks, |
|
xfs_qcnt_t rtblks) |
|
{ |
|
struct xfs_mount *mp = ip->i_mount; |
|
struct xfs_dquot *dqp; |
|
xfs_dqid_t id; |
|
int error; |
|
|
|
id = xfs_qm_id_for_quotatype(ip, type); |
|
error = xfs_qm_dqget(mp, id, type, true, &dqp); |
|
if (error) { |
|
/* |
|
* Shouldn't be able to turn off quotas here. |
|
*/ |
|
ASSERT(error != -ESRCH); |
|
ASSERT(error != -ENOENT); |
|
return error; |
|
} |
|
|
|
trace_xfs_dqadjust(dqp); |
|
|
|
/* |
|
* Adjust the inode count and the block count to reflect this inode's |
|
* resource usage. |
|
*/ |
|
dqp->q_ino.count++; |
|
dqp->q_ino.reserved++; |
|
if (nblks) { |
|
dqp->q_blk.count += nblks; |
|
dqp->q_blk.reserved += nblks; |
|
} |
|
if (rtblks) { |
|
dqp->q_rtb.count += rtblks; |
|
dqp->q_rtb.reserved += rtblks; |
|
} |
|
|
|
/* |
|
* Set default limits, adjust timers (since we changed usages) |
|
* |
|
* There are no timers for the default values set in the root dquot. |
|
*/ |
|
if (dqp->q_id) { |
|
xfs_qm_adjust_dqlimits(dqp); |
|
xfs_qm_adjust_dqtimers(dqp); |
|
} |
|
|
|
dqp->q_flags |= XFS_DQFLAG_DIRTY; |
|
xfs_qm_dqput(dqp); |
|
return 0; |
|
} |
|
|
|
/* |
|
* callback routine supplied to bulkstat(). Given an inumber, find its |
|
* dquots and update them to account for resources taken by that inode. |
|
*/ |
|
/* ARGSUSED */ |
|
STATIC int |
|
xfs_qm_dqusage_adjust( |
|
struct xfs_mount *mp, |
|
struct xfs_trans *tp, |
|
xfs_ino_t ino, |
|
void *data) |
|
{ |
|
struct xfs_inode *ip; |
|
xfs_qcnt_t nblks; |
|
xfs_filblks_t rtblks = 0; /* total rt blks */ |
|
int error; |
|
|
|
ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
|
|
|
/* |
|
* rootino must have its resources accounted for, not so with the quota |
|
* inodes. |
|
*/ |
|
if (xfs_is_quota_inode(&mp->m_sb, ino)) |
|
return 0; |
|
|
|
/* |
|
* We don't _need_ to take the ilock EXCL here because quotacheck runs |
|
* at mount time and therefore nobody will be racing chown/chproj. |
|
*/ |
|
error = xfs_iget(mp, tp, ino, XFS_IGET_DONTCACHE, 0, &ip); |
|
if (error == -EINVAL || error == -ENOENT) |
|
return 0; |
|
if (error) |
|
return error; |
|
|
|
ASSERT(ip->i_delayed_blks == 0); |
|
|
|
if (XFS_IS_REALTIME_INODE(ip)) { |
|
struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); |
|
|
|
error = xfs_iread_extents(tp, ip, XFS_DATA_FORK); |
|
if (error) |
|
goto error0; |
|
|
|
xfs_bmap_count_leaves(ifp, &rtblks); |
|
} |
|
|
|
nblks = (xfs_qcnt_t)ip->i_nblocks - rtblks; |
|
|
|
/* |
|
* Add the (disk blocks and inode) resources occupied by this |
|
* inode to its dquots. We do this adjustment in the incore dquot, |
|
* and also copy the changes to its buffer. |
|
* We don't care about putting these changes in a transaction |
|
* envelope because if we crash in the middle of a 'quotacheck' |
|
* we have to start from the beginning anyway. |
|
* Once we're done, we'll log all the dquot bufs. |
|
* |
|
* The *QUOTA_ON checks below may look pretty racy, but quotachecks |
|
* and quotaoffs don't race. (Quotachecks happen at mount time only). |
|
*/ |
|
if (XFS_IS_UQUOTA_ON(mp)) { |
|
error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQTYPE_USER, nblks, |
|
rtblks); |
|
if (error) |
|
goto error0; |
|
} |
|
|
|
if (XFS_IS_GQUOTA_ON(mp)) { |
|
error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQTYPE_GROUP, nblks, |
|
rtblks); |
|
if (error) |
|
goto error0; |
|
} |
|
|
|
if (XFS_IS_PQUOTA_ON(mp)) { |
|
error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQTYPE_PROJ, nblks, |
|
rtblks); |
|
if (error) |
|
goto error0; |
|
} |
|
|
|
error0: |
|
xfs_irele(ip); |
|
return error; |
|
} |
|
|
|
STATIC int |
|
xfs_qm_flush_one( |
|
struct xfs_dquot *dqp, |
|
void *data) |
|
{ |
|
struct xfs_mount *mp = dqp->q_mount; |
|
struct list_head *buffer_list = data; |
|
struct xfs_buf *bp = NULL; |
|
int error = 0; |
|
|
|
xfs_dqlock(dqp); |
|
if (dqp->q_flags & XFS_DQFLAG_FREEING) |
|
goto out_unlock; |
|
if (!XFS_DQ_IS_DIRTY(dqp)) |
|
goto out_unlock; |
|
|
|
/* |
|
* The only way the dquot is already flush locked by the time quotacheck |
|
* gets here is if reclaim flushed it before the dqadjust walk dirtied |
|
* it for the final time. Quotacheck collects all dquot bufs in the |
|
* local delwri queue before dquots are dirtied, so reclaim can't have |
|
* possibly queued it for I/O. The only way out is to push the buffer to |
|
* cycle the flush lock. |
|
*/ |
|
if (!xfs_dqflock_nowait(dqp)) { |
|
/* buf is pinned in-core by delwri list */ |
|
bp = xfs_buf_incore(mp->m_ddev_targp, dqp->q_blkno, |
|
mp->m_quotainfo->qi_dqchunklen, 0); |
|
if (!bp) { |
|
error = -EINVAL; |
|
goto out_unlock; |
|
} |
|
xfs_buf_unlock(bp); |
|
|
|
xfs_buf_delwri_pushbuf(bp, buffer_list); |
|
xfs_buf_rele(bp); |
|
|
|
error = -EAGAIN; |
|
goto out_unlock; |
|
} |
|
|
|
error = xfs_qm_dqflush(dqp, &bp); |
|
if (error) |
|
goto out_unlock; |
|
|
|
xfs_buf_delwri_queue(bp, buffer_list); |
|
xfs_buf_relse(bp); |
|
out_unlock: |
|
xfs_dqunlock(dqp); |
|
return error; |
|
} |
|
|
|
/* |
|
* Walk thru all the filesystem inodes and construct a consistent view |
|
* of the disk quota world. If the quotacheck fails, disable quotas. |
|
*/ |
|
STATIC int |
|
xfs_qm_quotacheck( |
|
xfs_mount_t *mp) |
|
{ |
|
int error, error2; |
|
uint flags; |
|
LIST_HEAD (buffer_list); |
|
struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip; |
|
struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip; |
|
struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip; |
|
|
|
flags = 0; |
|
|
|
ASSERT(uip || gip || pip); |
|
ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
|
|
|
xfs_notice(mp, "Quotacheck needed: Please wait."); |
|
|
|
/* |
|
* First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
|
* their counters to zero. We need a clean slate. |
|
* We don't log our changes till later. |
|
*/ |
|
if (uip) { |
|
error = xfs_qm_reset_dqcounts_buf(mp, uip, XFS_DQTYPE_USER, |
|
&buffer_list); |
|
if (error) |
|
goto error_return; |
|
flags |= XFS_UQUOTA_CHKD; |
|
} |
|
|
|
if (gip) { |
|
error = xfs_qm_reset_dqcounts_buf(mp, gip, XFS_DQTYPE_GROUP, |
|
&buffer_list); |
|
if (error) |
|
goto error_return; |
|
flags |= XFS_GQUOTA_CHKD; |
|
} |
|
|
|
if (pip) { |
|
error = xfs_qm_reset_dqcounts_buf(mp, pip, XFS_DQTYPE_PROJ, |
|
&buffer_list); |
|
if (error) |
|
goto error_return; |
|
flags |= XFS_PQUOTA_CHKD; |
|
} |
|
|
|
error = xfs_iwalk_threaded(mp, 0, 0, xfs_qm_dqusage_adjust, 0, true, |
|
NULL); |
|
if (error) |
|
goto error_return; |
|
|
|
/* |
|
* We've made all the changes that we need to make incore. Flush them |
|
* down to disk buffers if everything was updated successfully. |
|
*/ |
|
if (XFS_IS_UQUOTA_ON(mp)) { |
|
error = xfs_qm_dquot_walk(mp, XFS_DQTYPE_USER, xfs_qm_flush_one, |
|
&buffer_list); |
|
} |
|
if (XFS_IS_GQUOTA_ON(mp)) { |
|
error2 = xfs_qm_dquot_walk(mp, XFS_DQTYPE_GROUP, xfs_qm_flush_one, |
|
&buffer_list); |
|
if (!error) |
|
error = error2; |
|
} |
|
if (XFS_IS_PQUOTA_ON(mp)) { |
|
error2 = xfs_qm_dquot_walk(mp, XFS_DQTYPE_PROJ, xfs_qm_flush_one, |
|
&buffer_list); |
|
if (!error) |
|
error = error2; |
|
} |
|
|
|
error2 = xfs_buf_delwri_submit(&buffer_list); |
|
if (!error) |
|
error = error2; |
|
|
|
/* |
|
* We can get this error if we couldn't do a dquot allocation inside |
|
* xfs_qm_dqusage_adjust (via bulkstat). We don't care about the |
|
* dirty dquots that might be cached, we just want to get rid of them |
|
* and turn quotaoff. The dquots won't be attached to any of the inodes |
|
* at this point (because we intentionally didn't in dqget_noattach). |
|
*/ |
|
if (error) { |
|
xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
|
goto error_return; |
|
} |
|
|
|
/* |
|
* If one type of quotas is off, then it will lose its |
|
* quotachecked status, since we won't be doing accounting for |
|
* that type anymore. |
|
*/ |
|
mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD; |
|
mp->m_qflags |= flags; |
|
|
|
error_return: |
|
xfs_buf_delwri_cancel(&buffer_list); |
|
|
|
if (error) { |
|
xfs_warn(mp, |
|
"Quotacheck: Unsuccessful (Error %d): Disabling quotas.", |
|
error); |
|
/* |
|
* We must turn off quotas. |
|
*/ |
|
ASSERT(mp->m_quotainfo != NULL); |
|
xfs_qm_destroy_quotainfo(mp); |
|
if (xfs_mount_reset_sbqflags(mp)) { |
|
xfs_warn(mp, |
|
"Quotacheck: Failed to reset quota flags."); |
|
} |
|
} else |
|
xfs_notice(mp, "Quotacheck: Done."); |
|
return error; |
|
} |
|
|
|
/* |
|
* This is called from xfs_mountfs to start quotas and initialize all |
|
* necessary data structures like quotainfo. This is also responsible for |
|
* running a quotacheck as necessary. We are guaranteed that the superblock |
|
* is consistently read in at this point. |
|
* |
|
* If we fail here, the mount will continue with quota turned off. We don't |
|
* need to inidicate success or failure at all. |
|
*/ |
|
void |
|
xfs_qm_mount_quotas( |
|
struct xfs_mount *mp) |
|
{ |
|
int error = 0; |
|
uint sbf; |
|
|
|
/* |
|
* If quotas on realtime volumes is not supported, we disable |
|
* quotas immediately. |
|
*/ |
|
if (mp->m_sb.sb_rextents) { |
|
xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
|
mp->m_qflags = 0; |
|
goto write_changes; |
|
} |
|
|
|
ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
|
|
|
/* |
|
* Allocate the quotainfo structure inside the mount struct, and |
|
* create quotainode(s), and change/rev superblock if necessary. |
|
*/ |
|
error = xfs_qm_init_quotainfo(mp); |
|
if (error) { |
|
/* |
|
* We must turn off quotas. |
|
*/ |
|
ASSERT(mp->m_quotainfo == NULL); |
|
mp->m_qflags = 0; |
|
goto write_changes; |
|
} |
|
/* |
|
* If any of the quotas are not consistent, do a quotacheck. |
|
*/ |
|
if (XFS_QM_NEED_QUOTACHECK(mp)) { |
|
error = xfs_qm_quotacheck(mp); |
|
if (error) { |
|
/* Quotacheck failed and disabled quotas. */ |
|
return; |
|
} |
|
} |
|
/* |
|
* If one type of quotas is off, then it will lose its |
|
* quotachecked status, since we won't be doing accounting for |
|
* that type anymore. |
|
*/ |
|
if (!XFS_IS_UQUOTA_ON(mp)) |
|
mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
|
if (!XFS_IS_GQUOTA_ON(mp)) |
|
mp->m_qflags &= ~XFS_GQUOTA_CHKD; |
|
if (!XFS_IS_PQUOTA_ON(mp)) |
|
mp->m_qflags &= ~XFS_PQUOTA_CHKD; |
|
|
|
write_changes: |
|
/* |
|
* We actually don't have to acquire the m_sb_lock at all. |
|
* This can only be called from mount, and that's single threaded. XXX |
|
*/ |
|
spin_lock(&mp->m_sb_lock); |
|
sbf = mp->m_sb.sb_qflags; |
|
mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; |
|
spin_unlock(&mp->m_sb_lock); |
|
|
|
if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { |
|
if (xfs_sync_sb(mp, false)) { |
|
/* |
|
* We could only have been turning quotas off. |
|
* We aren't in very good shape actually because |
|
* the incore structures are convinced that quotas are |
|
* off, but the on disk superblock doesn't know that ! |
|
*/ |
|
ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); |
|
xfs_alert(mp, "%s: Superblock update failed!", |
|
__func__); |
|
} |
|
} |
|
|
|
if (error) { |
|
xfs_warn(mp, "Failed to initialize disk quotas."); |
|
return; |
|
} |
|
} |
|
|
|
/* |
|
* This is called after the superblock has been read in and we're ready to |
|
* iget the quota inodes. |
|
*/ |
|
STATIC int |
|
xfs_qm_init_quotainos( |
|
xfs_mount_t *mp) |
|
{ |
|
struct xfs_inode *uip = NULL; |
|
struct xfs_inode *gip = NULL; |
|
struct xfs_inode *pip = NULL; |
|
int error; |
|
uint flags = 0; |
|
|
|
ASSERT(mp->m_quotainfo); |
|
|
|
/* |
|
* Get the uquota and gquota inodes |
|
*/ |
|
if (xfs_sb_version_hasquota(&mp->m_sb)) { |
|
if (XFS_IS_UQUOTA_ON(mp) && |
|
mp->m_sb.sb_uquotino != NULLFSINO) { |
|
ASSERT(mp->m_sb.sb_uquotino > 0); |
|
error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, |
|
0, 0, &uip); |
|
if (error) |
|
return error; |
|
} |
|
if (XFS_IS_GQUOTA_ON(mp) && |
|
mp->m_sb.sb_gquotino != NULLFSINO) { |
|
ASSERT(mp->m_sb.sb_gquotino > 0); |
|
error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, |
|
0, 0, &gip); |
|
if (error) |
|
goto error_rele; |
|
} |
|
if (XFS_IS_PQUOTA_ON(mp) && |
|
mp->m_sb.sb_pquotino != NULLFSINO) { |
|
ASSERT(mp->m_sb.sb_pquotino > 0); |
|
error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino, |
|
0, 0, &pip); |
|
if (error) |
|
goto error_rele; |
|
} |
|
} else { |
|
flags |= XFS_QMOPT_SBVERSION; |
|
} |
|
|
|
/* |
|
* Create the three inodes, if they don't exist already. The changes |
|
* made above will get added to a transaction and logged in one of |
|
* the qino_alloc calls below. If the device is readonly, |
|
* temporarily switch to read-write to do this. |
|
*/ |
|
if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { |
|
error = xfs_qm_qino_alloc(mp, &uip, |
|
flags | XFS_QMOPT_UQUOTA); |
|
if (error) |
|
goto error_rele; |
|
|
|
flags &= ~XFS_QMOPT_SBVERSION; |
|
} |
|
if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) { |
|
error = xfs_qm_qino_alloc(mp, &gip, |
|
flags | XFS_QMOPT_GQUOTA); |
|
if (error) |
|
goto error_rele; |
|
|
|
flags &= ~XFS_QMOPT_SBVERSION; |
|
} |
|
if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) { |
|
error = xfs_qm_qino_alloc(mp, &pip, |
|
flags | XFS_QMOPT_PQUOTA); |
|
if (error) |
|
goto error_rele; |
|
} |
|
|
|
mp->m_quotainfo->qi_uquotaip = uip; |
|
mp->m_quotainfo->qi_gquotaip = gip; |
|
mp->m_quotainfo->qi_pquotaip = pip; |
|
|
|
return 0; |
|
|
|
error_rele: |
|
if (uip) |
|
xfs_irele(uip); |
|
if (gip) |
|
xfs_irele(gip); |
|
if (pip) |
|
xfs_irele(pip); |
|
return error; |
|
} |
|
|
|
STATIC void |
|
xfs_qm_destroy_quotainos( |
|
struct xfs_quotainfo *qi) |
|
{ |
|
if (qi->qi_uquotaip) { |
|
xfs_irele(qi->qi_uquotaip); |
|
qi->qi_uquotaip = NULL; /* paranoia */ |
|
} |
|
if (qi->qi_gquotaip) { |
|
xfs_irele(qi->qi_gquotaip); |
|
qi->qi_gquotaip = NULL; |
|
} |
|
if (qi->qi_pquotaip) { |
|
xfs_irele(qi->qi_pquotaip); |
|
qi->qi_pquotaip = NULL; |
|
} |
|
} |
|
|
|
STATIC void |
|
xfs_qm_dqfree_one( |
|
struct xfs_dquot *dqp) |
|
{ |
|
struct xfs_mount *mp = dqp->q_mount; |
|
struct xfs_quotainfo *qi = mp->m_quotainfo; |
|
|
|
mutex_lock(&qi->qi_tree_lock); |
|
radix_tree_delete(xfs_dquot_tree(qi, xfs_dquot_type(dqp)), dqp->q_id); |
|
|
|
qi->qi_dquots--; |
|
mutex_unlock(&qi->qi_tree_lock); |
|
|
|
xfs_qm_dqdestroy(dqp); |
|
} |
|
|
|
/* --------------- utility functions for vnodeops ---------------- */ |
|
|
|
|
|
/* |
|
* Given an inode, a uid, gid and prid make sure that we have |
|
* allocated relevant dquot(s) on disk, and that we won't exceed inode |
|
* quotas by creating this file. |
|
* This also attaches dquot(s) to the given inode after locking it, |
|
* and returns the dquots corresponding to the uid and/or gid. |
|
* |
|
* in : inode (unlocked) |
|
* out : udquot, gdquot with references taken and unlocked |
|
*/ |
|
int |
|
xfs_qm_vop_dqalloc( |
|
struct xfs_inode *ip, |
|
kuid_t uid, |
|
kgid_t gid, |
|
prid_t prid, |
|
uint flags, |
|
struct xfs_dquot **O_udqpp, |
|
struct xfs_dquot **O_gdqpp, |
|
struct xfs_dquot **O_pdqpp) |
|
{ |
|
struct xfs_mount *mp = ip->i_mount; |
|
struct inode *inode = VFS_I(ip); |
|
struct user_namespace *user_ns = inode->i_sb->s_user_ns; |
|
struct xfs_dquot *uq = NULL; |
|
struct xfs_dquot *gq = NULL; |
|
struct xfs_dquot *pq = NULL; |
|
int error; |
|
uint lockflags; |
|
|
|
if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
|
return 0; |
|
|
|
lockflags = XFS_ILOCK_EXCL; |
|
xfs_ilock(ip, lockflags); |
|
|
|
if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
|
gid = inode->i_gid; |
|
|
|
/* |
|
* Attach the dquot(s) to this inode, doing a dquot allocation |
|
* if necessary. The dquot(s) will not be locked. |
|
*/ |
|
if (XFS_NOT_DQATTACHED(mp, ip)) { |
|
error = xfs_qm_dqattach_locked(ip, true); |
|
if (error) { |
|
xfs_iunlock(ip, lockflags); |
|
return error; |
|
} |
|
} |
|
|
|
if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
|
ASSERT(O_udqpp); |
|
if (!uid_eq(inode->i_uid, uid)) { |
|
/* |
|
* What we need is the dquot that has this uid, and |
|
* if we send the inode to dqget, the uid of the inode |
|
* takes priority over what's sent in the uid argument. |
|
* We must unlock inode here before calling dqget if |
|
* we're not sending the inode, because otherwise |
|
* we'll deadlock by doing trans_reserve while |
|
* holding ilock. |
|
*/ |
|
xfs_iunlock(ip, lockflags); |
|
error = xfs_qm_dqget(mp, from_kuid(user_ns, uid), |
|
XFS_DQTYPE_USER, true, &uq); |
|
if (error) { |
|
ASSERT(error != -ENOENT); |
|
return error; |
|
} |
|
/* |
|
* Get the ilock in the right order. |
|
*/ |
|
xfs_dqunlock(uq); |
|
lockflags = XFS_ILOCK_SHARED; |
|
xfs_ilock(ip, lockflags); |
|
} else { |
|
/* |
|
* Take an extra reference, because we'll return |
|
* this to caller |
|
*/ |
|
ASSERT(ip->i_udquot); |
|
uq = xfs_qm_dqhold(ip->i_udquot); |
|
} |
|
} |
|
if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
|
ASSERT(O_gdqpp); |
|
if (!gid_eq(inode->i_gid, gid)) { |
|
xfs_iunlock(ip, lockflags); |
|
error = xfs_qm_dqget(mp, from_kgid(user_ns, gid), |
|
XFS_DQTYPE_GROUP, true, &gq); |
|
if (error) { |
|
ASSERT(error != -ENOENT); |
|
goto error_rele; |
|
} |
|
xfs_dqunlock(gq); |
|
lockflags = XFS_ILOCK_SHARED; |
|
xfs_ilock(ip, lockflags); |
|
} else { |
|
ASSERT(ip->i_gdquot); |
|
gq = xfs_qm_dqhold(ip->i_gdquot); |
|
} |
|
} |
|
if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
|
ASSERT(O_pdqpp); |
|
if (ip->i_projid != prid) { |
|
xfs_iunlock(ip, lockflags); |
|
error = xfs_qm_dqget(mp, prid, |
|
XFS_DQTYPE_PROJ, true, &pq); |
|
if (error) { |
|
ASSERT(error != -ENOENT); |
|
goto error_rele; |
|
} |
|
xfs_dqunlock(pq); |
|
lockflags = XFS_ILOCK_SHARED; |
|
xfs_ilock(ip, lockflags); |
|
} else { |
|
ASSERT(ip->i_pdquot); |
|
pq = xfs_qm_dqhold(ip->i_pdquot); |
|
} |
|
} |
|
trace_xfs_dquot_dqalloc(ip); |
|
|
|
xfs_iunlock(ip, lockflags); |
|
if (O_udqpp) |
|
*O_udqpp = uq; |
|
else |
|
xfs_qm_dqrele(uq); |
|
if (O_gdqpp) |
|
*O_gdqpp = gq; |
|
else |
|
xfs_qm_dqrele(gq); |
|
if (O_pdqpp) |
|
*O_pdqpp = pq; |
|
else |
|
xfs_qm_dqrele(pq); |
|
return 0; |
|
|
|
error_rele: |
|
xfs_qm_dqrele(gq); |
|
xfs_qm_dqrele(uq); |
|
return error; |
|
} |
|
|
|
/* |
|
* Actually transfer ownership, and do dquot modifications. |
|
* These were already reserved. |
|
*/ |
|
struct xfs_dquot * |
|
xfs_qm_vop_chown( |
|
struct xfs_trans *tp, |
|
struct xfs_inode *ip, |
|
struct xfs_dquot **IO_olddq, |
|
struct xfs_dquot *newdq) |
|
{ |
|
struct xfs_dquot *prevdq; |
|
uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
|
XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; |
|
|
|
|
|
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
|
ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
|
|
|
/* old dquot */ |
|
prevdq = *IO_olddq; |
|
ASSERT(prevdq); |
|
ASSERT(prevdq != newdq); |
|
|
|
xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_nblocks)); |
|
xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); |
|
|
|
/* the sparkling new dquot */ |
|
xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_nblocks); |
|
xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); |
|
|
|
/* |
|
* Back when we made quota reservations for the chown, we reserved the |
|
* ondisk blocks + delalloc blocks with the new dquot. Now that we've |
|
* switched the dquots, decrease the new dquot's block reservation |
|
* (having already bumped up the real counter) so that we don't have |
|
* any reservation to give back when we commit. |
|
*/ |
|
xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_RES_BLKS, |
|
-ip->i_delayed_blks); |
|
|
|
/* |
|
* Give the incore reservation for delalloc blocks back to the old |
|
* dquot. We don't normally handle delalloc quota reservations |
|
* transactionally, so just lock the dquot and subtract from the |
|
* reservation. Dirty the transaction because it's too late to turn |
|
* back now. |
|
*/ |
|
tp->t_flags |= XFS_TRANS_DIRTY; |
|
xfs_dqlock(prevdq); |
|
ASSERT(prevdq->q_blk.reserved >= ip->i_delayed_blks); |
|
prevdq->q_blk.reserved -= ip->i_delayed_blks; |
|
xfs_dqunlock(prevdq); |
|
|
|
/* |
|
* Take an extra reference, because the inode is going to keep |
|
* this dquot pointer even after the trans_commit. |
|
*/ |
|
*IO_olddq = xfs_qm_dqhold(newdq); |
|
|
|
return prevdq; |
|
} |
|
|
|
int |
|
xfs_qm_vop_rename_dqattach( |
|
struct xfs_inode **i_tab) |
|
{ |
|
struct xfs_mount *mp = i_tab[0]->i_mount; |
|
int i; |
|
|
|
if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
|
return 0; |
|
|
|
for (i = 0; (i < 4 && i_tab[i]); i++) { |
|
struct xfs_inode *ip = i_tab[i]; |
|
int error; |
|
|
|
/* |
|
* Watch out for duplicate entries in the table. |
|
*/ |
|
if (i == 0 || ip != i_tab[i-1]) { |
|
if (XFS_NOT_DQATTACHED(mp, ip)) { |
|
error = xfs_qm_dqattach(ip); |
|
if (error) |
|
return error; |
|
} |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
void |
|
xfs_qm_vop_create_dqattach( |
|
struct xfs_trans *tp, |
|
struct xfs_inode *ip, |
|
struct xfs_dquot *udqp, |
|
struct xfs_dquot *gdqp, |
|
struct xfs_dquot *pdqp) |
|
{ |
|
struct xfs_mount *mp = tp->t_mountp; |
|
|
|
if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
|
return; |
|
|
|
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
|
|
|
if (udqp && XFS_IS_UQUOTA_ON(mp)) { |
|
ASSERT(ip->i_udquot == NULL); |
|
ASSERT(i_uid_read(VFS_I(ip)) == udqp->q_id); |
|
|
|
ip->i_udquot = xfs_qm_dqhold(udqp); |
|
xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
|
} |
|
if (gdqp && XFS_IS_GQUOTA_ON(mp)) { |
|
ASSERT(ip->i_gdquot == NULL); |
|
ASSERT(i_gid_read(VFS_I(ip)) == gdqp->q_id); |
|
|
|
ip->i_gdquot = xfs_qm_dqhold(gdqp); |
|
xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
|
} |
|
if (pdqp && XFS_IS_PQUOTA_ON(mp)) { |
|
ASSERT(ip->i_pdquot == NULL); |
|
ASSERT(ip->i_projid == pdqp->q_id); |
|
|
|
ip->i_pdquot = xfs_qm_dqhold(pdqp); |
|
xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1); |
|
} |
|
} |
|
|
|
|