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Diffstat (limited to 'fs/xfs/xfs_qm.c')
-rw-r--r--fs/xfs/xfs_qm.c196
1 files changed, 110 insertions, 86 deletions
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index 55c6afedc879..249db1987764 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -19,7 +19,6 @@
#include "xfs_fs.h"
#include "xfs_bit.h"
#include "xfs_log.h"
-#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
@@ -65,7 +64,8 @@ STATIC int
xfs_qm_dquot_walk(
struct xfs_mount *mp,
int type,
- int (*execute)(struct xfs_dquot *dqp))
+ int (*execute)(struct xfs_dquot *dqp, void *data),
+ void *data)
{
struct xfs_quotainfo *qi = mp->m_quotainfo;
struct radix_tree_root *tree = XFS_DQUOT_TREE(qi, type);
@@ -97,7 +97,7 @@ restart:
next_index = be32_to_cpu(dqp->q_core.d_id) + 1;
- error = execute(batch[i]);
+ error = execute(batch[i], data);
if (error == EAGAIN) {
skipped++;
continue;
@@ -129,7 +129,8 @@ restart:
*/
STATIC int
xfs_qm_dqpurge(
- struct xfs_dquot *dqp)
+ struct xfs_dquot *dqp,
+ void *data)
{
struct xfs_mount *mp = dqp->q_mount;
struct xfs_quotainfo *qi = mp->m_quotainfo;
@@ -153,21 +154,7 @@ xfs_qm_dqpurge(
dqp->dq_flags |= XFS_DQ_FREEING;
- /*
- * If we're turning off quotas, we have to make sure that, for
- * example, we don't delete quota disk blocks while dquots are
- * in the process of getting written to those disk blocks.
- * This dquot might well be on AIL, and we can't leave it there
- * if we're turning off quotas. Basically, we need this flush
- * lock, and are willing to block on it.
- */
- if (!xfs_dqflock_nowait(dqp)) {
- /*
- * Block on the flush lock after nudging dquot buffer,
- * if it is incore.
- */
- xfs_dqflock_pushbuf_wait(dqp);
- }
+ xfs_dqflock(dqp);
/*
* If we are turning this type of quotas off, we don't care
@@ -175,16 +162,21 @@ xfs_qm_dqpurge(
* we're unmounting, we do care, so we flush it and wait.
*/
if (XFS_DQ_IS_DIRTY(dqp)) {
- int error;
+ struct xfs_buf *bp = NULL;
+ int error;
/*
* We don't care about getting disk errors here. We need
* to purge this dquot anyway, so we go ahead regardless.
*/
- error = xfs_qm_dqflush(dqp, SYNC_WAIT);
- if (error)
+ error = xfs_qm_dqflush(dqp, &bp);
+ if (error) {
xfs_warn(mp, "%s: dquot %p flush failed",
__func__, dqp);
+ } else {
+ error = xfs_bwrite(bp);
+ xfs_buf_relse(bp);
+ }
xfs_dqflock(dqp);
}
@@ -226,11 +218,11 @@ xfs_qm_dqpurge_all(
uint flags)
{
if (flags & XFS_QMOPT_UQUOTA)
- xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge);
+ xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge, NULL);
if (flags & XFS_QMOPT_GQUOTA)
- xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge);
+ xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL);
if (flags & XFS_QMOPT_PQUOTA)
- xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge);
+ xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge, NULL);
}
/*
@@ -483,6 +475,23 @@ done:
xfs_dqunlock(udq);
}
+static bool
+xfs_qm_need_dqattach(
+ struct xfs_inode *ip)
+{
+ struct xfs_mount *mp = ip->i_mount;
+
+ if (!XFS_IS_QUOTA_RUNNING(mp))
+ return false;
+ if (!XFS_IS_QUOTA_ON(mp))
+ return false;
+ if (!XFS_NOT_DQATTACHED(mp, ip))
+ return false;
+ if (ip->i_ino == mp->m_sb.sb_uquotino ||
+ ip->i_ino == mp->m_sb.sb_gquotino)
+ return false;
+ return true;
+}
/*
* Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
@@ -500,11 +509,7 @@ xfs_qm_dqattach_locked(
uint nquotas = 0;
int error = 0;
- if (!XFS_IS_QUOTA_RUNNING(mp) ||
- !XFS_IS_QUOTA_ON(mp) ||
- !XFS_NOT_DQATTACHED(mp, ip) ||
- ip->i_ino == mp->m_sb.sb_uquotino ||
- ip->i_ino == mp->m_sb.sb_gquotino)
+ if (!xfs_qm_need_dqattach(ip))
return 0;
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
@@ -575,6 +580,9 @@ xfs_qm_dqattach(
{
int error;
+ if (!xfs_qm_need_dqattach(ip))
+ return 0;
+
xfs_ilock(ip, XFS_ILOCK_EXCL);
error = xfs_qm_dqattach_locked(ip, flags);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
@@ -855,15 +863,16 @@ xfs_qm_reset_dqcounts(
STATIC int
xfs_qm_dqiter_bufs(
- xfs_mount_t *mp,
- xfs_dqid_t firstid,
- xfs_fsblock_t bno,
- xfs_filblks_t blkcnt,
- uint flags)
+ struct xfs_mount *mp,
+ xfs_dqid_t firstid,
+ xfs_fsblock_t bno,
+ xfs_filblks_t blkcnt,
+ uint flags,
+ struct list_head *buffer_list)
{
- xfs_buf_t *bp;
- int error;
- int type;
+ struct xfs_buf *bp;
+ int error;
+ int type;
ASSERT(blkcnt > 0);
type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER :
@@ -887,7 +896,7 @@ xfs_qm_dqiter_bufs(
break;
xfs_qm_reset_dqcounts(mp, bp, firstid, type);
- xfs_buf_delwri_queue(bp);
+ xfs_buf_delwri_queue(bp, buffer_list);
xfs_buf_relse(bp);
/*
* goto the next block.
@@ -895,6 +904,7 @@ xfs_qm_dqiter_bufs(
bno++;
firstid += mp->m_quotainfo->qi_dqperchunk;
}
+
return error;
}
@@ -904,11 +914,12 @@ xfs_qm_dqiter_bufs(
*/
STATIC int
xfs_qm_dqiterate(
- xfs_mount_t *mp,
- xfs_inode_t *qip,
- uint flags)
+ struct xfs_mount *mp,
+ struct xfs_inode *qip,
+ uint flags,
+ struct list_head *buffer_list)
{
- xfs_bmbt_irec_t *map;
+ struct xfs_bmbt_irec *map;
int i, nmaps; /* number of map entries */
int error; /* return value */
xfs_fileoff_t lblkno;
@@ -975,21 +986,17 @@ xfs_qm_dqiterate(
* Iterate thru all the blks in the extent and
* reset the counters of all the dquots inside them.
*/
- if ((error = xfs_qm_dqiter_bufs(mp,
- firstid,
- map[i].br_startblock,
- map[i].br_blockcount,
- flags))) {
- break;
- }
+ error = xfs_qm_dqiter_bufs(mp, firstid,
+ map[i].br_startblock,
+ map[i].br_blockcount,
+ flags, buffer_list);
+ if (error)
+ goto out;
}
-
- if (error)
- break;
} while (nmaps > 0);
+out:
kmem_free(map);
-
return error;
}
@@ -1182,8 +1189,11 @@ error0:
STATIC int
xfs_qm_flush_one(
- struct xfs_dquot *dqp)
+ struct xfs_dquot *dqp,
+ void *data)
{
+ struct list_head *buffer_list = data;
+ struct xfs_buf *bp = NULL;
int error = 0;
xfs_dqlock(dqp);
@@ -1192,11 +1202,13 @@ xfs_qm_flush_one(
if (!XFS_DQ_IS_DIRTY(dqp))
goto out_unlock;
- if (!xfs_dqflock_nowait(dqp))
- xfs_dqflock_pushbuf_wait(dqp);
-
- error = xfs_qm_dqflush(dqp, 0);
+ xfs_dqflock(dqp);
+ 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;
@@ -1215,6 +1227,7 @@ xfs_qm_quotacheck(
size_t structsz;
xfs_inode_t *uip, *gip;
uint flags;
+ LIST_HEAD (buffer_list);
count = INT_MAX;
structsz = 1;
@@ -1233,7 +1246,8 @@ xfs_qm_quotacheck(
*/
uip = mp->m_quotainfo->qi_uquotaip;
if (uip) {
- error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA);
+ error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA,
+ &buffer_list);
if (error)
goto error_return;
flags |= XFS_UQUOTA_CHKD;
@@ -1242,7 +1256,8 @@ xfs_qm_quotacheck(
gip = mp->m_quotainfo->qi_gquotaip;
if (gip) {
error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ?
- XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA);
+ XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA,
+ &buffer_list);
if (error)
goto error_return;
flags |= XFS_OQUOTA_CHKD;
@@ -1265,19 +1280,27 @@ xfs_qm_quotacheck(
* 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_DQ_USER, xfs_qm_flush_one);
+ if (XFS_IS_UQUOTA_ON(mp)) {
+ error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one,
+ &buffer_list);
+ }
if (XFS_IS_GQUOTA_ON(mp)) {
- error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one);
+ error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one,
+ &buffer_list);
if (!error)
error = error2;
}
if (XFS_IS_PQUOTA_ON(mp)) {
- error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one);
+ error2 = xfs_qm_dquot_walk(mp, XFS_DQ_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
@@ -1291,15 +1314,6 @@ xfs_qm_quotacheck(
}
/*
- * We didn't log anything, because if we crashed, we'll have to
- * start the quotacheck from scratch anyway. However, we must make
- * sure that our dquot changes are secure before we put the
- * quotacheck'd stamp on the superblock. So, here we do a synchronous
- * flush.
- */
- xfs_flush_buftarg(mp->m_ddev_targp, 1);
-
- /*
* 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.
@@ -1308,6 +1322,13 @@ xfs_qm_quotacheck(
mp->m_qflags |= flags;
error_return:
+ while (!list_empty(&buffer_list)) {
+ struct xfs_buf *bp =
+ list_first_entry(&buffer_list, struct xfs_buf, b_list);
+ list_del_init(&bp->b_list);
+ xfs_buf_relse(bp);
+ }
+
if (error) {
xfs_warn(mp,
"Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
@@ -1424,6 +1445,7 @@ xfs_qm_dqfree_one(
STATIC void
xfs_qm_dqreclaim_one(
struct xfs_dquot *dqp,
+ struct list_head *buffer_list,
struct list_head *dispose_list)
{
struct xfs_mount *mp = dqp->q_mount;
@@ -1456,25 +1478,20 @@ xfs_qm_dqreclaim_one(
if (!xfs_dqflock_nowait(dqp))
goto out_busy;
- /*
- * We have the flush lock so we know that this is not in the
- * process of being flushed. So, if this is dirty, flush it
- * DELWRI so that we don't get a freelist infested with
- * dirty dquots.
- */
if (XFS_DQ_IS_DIRTY(dqp)) {
+ struct xfs_buf *bp = NULL;
+
trace_xfs_dqreclaim_dirty(dqp);
- /*
- * We flush it delayed write, so don't bother releasing the
- * freelist lock.
- */
- error = xfs_qm_dqflush(dqp, 0);
+ error = xfs_qm_dqflush(dqp, &bp);
if (error) {
xfs_warn(mp, "%s: dquot %p flush failed",
__func__, dqp);
+ goto out_busy;
}
+ xfs_buf_delwri_queue(bp, buffer_list);
+ xfs_buf_relse(bp);
/*
* Give the dquot another try on the freelist, as the
* flushing will take some time.
@@ -1518,8 +1535,10 @@ xfs_qm_shake(
struct xfs_quotainfo *qi =
container_of(shrink, struct xfs_quotainfo, qi_shrinker);
int nr_to_scan = sc->nr_to_scan;
+ LIST_HEAD (buffer_list);
LIST_HEAD (dispose_list);
struct xfs_dquot *dqp;
+ int error;
if ((sc->gfp_mask & (__GFP_FS|__GFP_WAIT)) != (__GFP_FS|__GFP_WAIT))
return 0;
@@ -1532,15 +1551,20 @@ xfs_qm_shake(
break;
dqp = list_first_entry(&qi->qi_lru_list, struct xfs_dquot,
q_lru);
- xfs_qm_dqreclaim_one(dqp, &dispose_list);
+ xfs_qm_dqreclaim_one(dqp, &buffer_list, &dispose_list);
}
mutex_unlock(&qi->qi_lru_lock);
+ error = xfs_buf_delwri_submit(&buffer_list);
+ if (error)
+ xfs_warn(NULL, "%s: dquot reclaim failed", __func__);
+
while (!list_empty(&dispose_list)) {
dqp = list_first_entry(&dispose_list, struct xfs_dquot, q_lru);
list_del_init(&dqp->q_lru);
xfs_qm_dqfree_one(dqp);
}
+
out:
return (qi->qi_lru_count / 100) * sysctl_vfs_cache_pressure;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.