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authorAbhijith Das <adas@redhat.com>2007-06-11 08:22:32 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2007-07-09 08:23:36 +0100
commitd93cfa9884354dac2d8ccd894594a43e0b962b6f (patch)
tree72704d54aaa99e0021d3cc0b025fb8c67b09e4ce /fs/gfs2/glock.h
parenta7a2ff8a951ab373732116e7c31e2e1fe025d5e0 (diff)
downloadop-kernel-dev-d93cfa9884354dac2d8ccd894594a43e0b962b6f.zip
op-kernel-dev-d93cfa9884354dac2d8ccd894594a43e0b962b6f.tar.gz
[GFS2] Fix deallocation issues
There were two issues during deallocation of unlinked inodes. The first was relating to the use of a "try" lock which in the case of the inode lock wasn't trying hard enough to deallocate in all circumstances (now changed to a normal glock) and in the case of the iopen lock didn't wait for the demotion of the shared lock before attempting to get the exclusive lock, and thereby sometimes (timing dependent) not completing the deallocation when it should have done. The second issue related to the lack of a way to invalidate dcache entries on remote nodes (now fixed by this patch) which meant that unlinks were taking a long time to return disk space to the fs. By adding some code to invalidate the dcache entries across the cluster for unlinked inodes, that is now fixed. This patch was written jointly by Abhijith Das and Steven Whitehouse. Signed-off-by: Abhijith Das <adas@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/glock.h')
-rw-r--r--fs/gfs2/glock.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index b3e152d..7721ca3 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -87,6 +87,7 @@ int gfs2_glock_nq(struct gfs2_holder *gh);
int gfs2_glock_poll(struct gfs2_holder *gh);
int gfs2_glock_wait(struct gfs2_holder *gh);
void gfs2_glock_dq(struct gfs2_holder *gh);
+void gfs2_glock_dq_wait(struct gfs2_holder *gh);
void gfs2_glock_dq_uninit(struct gfs2_holder *gh);
int gfs2_glock_nq_num(struct gfs2_sbd *sdp,
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