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path: root/fs/xfs/linux-2.6/xfs_sync.c
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Diffstat (limited to 'fs/xfs/linux-2.6/xfs_sync.c')
-rw-r--r--fs/xfs/linux-2.6/xfs_sync.c81
1 files changed, 31 insertions, 50 deletions
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index 8ecad5ff9f9b..e4c938afb910 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -179,6 +179,8 @@ restart:
if (error == EFSCORRUPTED)
break;
+ cond_resched();
+
} while (nr_found && !done);
if (skipped) {
@@ -359,14 +361,12 @@ xfs_quiesce_data(
{
int error, error2 = 0;
- /* push non-blocking */
- xfs_sync_data(mp, 0);
xfs_qm_sync(mp, SYNC_TRYLOCK);
-
- /* push and block till complete */
- xfs_sync_data(mp, SYNC_WAIT);
xfs_qm_sync(mp, SYNC_WAIT);
+ /* force out the newly dirtied log buffers */
+ xfs_log_force(mp, XFS_LOG_SYNC);
+
/* write superblock and hoover up shutdown errors */
error = xfs_sync_fsdata(mp);
@@ -436,7 +436,7 @@ xfs_quiesce_attr(
WARN_ON(atomic_read(&mp->m_active_trans) != 0);
/* Push the superblock and write an unmount record */
- error = xfs_log_sbcount(mp, 1);
+ error = xfs_log_sbcount(mp);
if (error)
xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. "
"Frozen image may not be consistent.");
@@ -986,6 +986,8 @@ restart:
*nr_to_scan -= XFS_LOOKUP_BATCH;
+ cond_resched();
+
} while (nr_found && !done && *nr_to_scan > 0);
if (trylock && !done)
@@ -1003,7 +1005,7 @@ restart:
* ensure that when we get more reclaimers than AGs we block rather
* than spin trying to execute reclaim.
*/
- if (trylock && skipped && *nr_to_scan > 0) {
+ if (skipped && (flags & SYNC_WAIT) && *nr_to_scan > 0) {
trylock = 0;
goto restart;
}
@@ -1021,44 +1023,38 @@ xfs_reclaim_inodes(
}
/*
- * Inode cache shrinker.
+ * Scan a certain number of inodes for reclaim.
*
* When called we make sure that there is a background (fast) inode reclaim in
- * progress, while we will throttle the speed of reclaim via doiing synchronous
+ * progress, while we will throttle the speed of reclaim via doing synchronous
* reclaim of inodes. That means if we come across dirty inodes, we wait for
* them to be cleaned, which we hope will not be very long due to the
* background walker having already kicked the IO off on those dirty inodes.
*/
-static int
-xfs_reclaim_inode_shrink(
- struct shrinker *shrink,
- struct shrink_control *sc)
+void
+xfs_reclaim_inodes_nr(
+ struct xfs_mount *mp,
+ int nr_to_scan)
{
- struct xfs_mount *mp;
- struct xfs_perag *pag;
- xfs_agnumber_t ag;
- int reclaimable;
- int nr_to_scan = sc->nr_to_scan;
- gfp_t gfp_mask = sc->gfp_mask;
-
- mp = container_of(shrink, struct xfs_mount, m_inode_shrink);
- if (nr_to_scan) {
- /* kick background reclaimer and push the AIL */
- xfs_syncd_queue_reclaim(mp);
- xfs_ail_push_all(mp->m_ail);
+ /* kick background reclaimer and push the AIL */
+ xfs_syncd_queue_reclaim(mp);
+ xfs_ail_push_all(mp->m_ail);
- if (!(gfp_mask & __GFP_FS))
- return -1;
+ xfs_reclaim_inodes_ag(mp, SYNC_TRYLOCK | SYNC_WAIT, &nr_to_scan);
+}
- xfs_reclaim_inodes_ag(mp, SYNC_TRYLOCK | SYNC_WAIT,
- &nr_to_scan);
- /* terminate if we don't exhaust the scan */
- if (nr_to_scan > 0)
- return -1;
- }
+/*
+ * Return the number of reclaimable inodes in the filesystem for
+ * the shrinker to determine how much to reclaim.
+ */
+int
+xfs_reclaim_inodes_count(
+ struct xfs_mount *mp)
+{
+ struct xfs_perag *pag;
+ xfs_agnumber_t ag = 0;
+ int reclaimable = 0;
- reclaimable = 0;
- ag = 0;
while ((pag = xfs_perag_get_tag(mp, ag, XFS_ICI_RECLAIM_TAG))) {
ag = pag->pag_agno + 1;
reclaimable += pag->pag_ici_reclaimable;
@@ -1067,18 +1063,3 @@ xfs_reclaim_inode_shrink(
return reclaimable;
}
-void
-xfs_inode_shrinker_register(
- struct xfs_mount *mp)
-{
- mp->m_inode_shrink.shrink = xfs_reclaim_inode_shrink;
- mp->m_inode_shrink.seeks = DEFAULT_SEEKS;
- register_shrinker(&mp->m_inode_shrink);
-}
-
-void
-xfs_inode_shrinker_unregister(
- struct xfs_mount *mp)
-{
- unregister_shrinker(&mp->m_inode_shrink);
-}