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authorChristoph Hellwig <hch@infradead.org>2011-04-24 19:06:17 +0000
committerAlex Elder <aelder@sgi.com>2011-04-28 13:18:09 -0500
commit8a072a4d4c6a5b6ec32836c467d2996393c76c6f (patch)
treeb21dad1310e4351854b9e2e24feb86beed20d1f7 /fs/xfs/xfs_trans.c
parent97d3ac75e5e0ebf7ca38ae74cebd201c09b97ab2 (diff)
downloadop-kernel-dev-8a072a4d4c6a5b6ec32836c467d2996393c76c6f.zip
op-kernel-dev-8a072a4d4c6a5b6ec32836c467d2996393c76c6f.tar.gz
xfs: reduce the number of pagb_lock roundtrips in xfs_alloc_clear_busy
Instead of finding the per-ag and then taking and releasing the pagb_lock for every single busy extent completed sort the list of busy extents and only switch betweens AGs where nessecary. This becomes especially important with the online discard support which will hit this lock more often. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_trans.c')
-rw-r--r--fs/xfs/xfs_trans.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index 7692279..d1f2485 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -608,10 +608,8 @@ STATIC void
xfs_trans_free(
struct xfs_trans *tp)
{
- struct xfs_busy_extent *busyp, *n;
-
- list_for_each_entry_safe(busyp, n, &tp->t_busy, list)
- xfs_alloc_busy_clear(tp->t_mountp, busyp);
+ xfs_alloc_busy_sort(&tp->t_busy);
+ xfs_alloc_busy_clear(tp->t_mountp, &tp->t_busy);
atomic_dec(&tp->t_mountp->m_active_trans);
xfs_trans_free_dqinfo(tp);
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