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authorSteven Whitehouse <swhiteho@redhat.com>2011-03-30 16:33:25 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2011-04-20 08:59:48 +0100
commit29687a2ac8dfcd5363e515ea715ec226aef8c26b (patch)
treea9bb35c110396c9c2a563c9442690cfb3368c8a8 /fs/gfs2/super.c
parent5ac048bb7ea6e87b06504b999017cfa1f38f4092 (diff)
downloadop-kernel-dev-29687a2ac8dfcd5363e515ea715ec226aef8c26b.zip
op-kernel-dev-29687a2ac8dfcd5363e515ea715ec226aef8c26b.tar.gz
GFS2: Alter point of entry to glock lru list for glocks with an address_space
Rather than allowing the glocks to be scheduled for possible reclaim as soon as they have exited the journal, this patch delays their entry to the list until the glocks in question are no longer in use. This means that we will rely on the vm for writeback of all dirty data and metadata from now on. When glocks are added to the lru list they should be freeable much faster since all the I/O required to free them should have already been completed. This should lead to much better I/O patterns under low memory conditions. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/super.c')
-rw-r--r--fs/gfs2/super.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index d827b93..b62c842 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -1401,6 +1401,7 @@ out:
end_writeback(inode);
ip->i_gl->gl_object = NULL;
+ gfs2_glock_add_to_lru(ip->i_gl);
gfs2_glock_put(ip->i_gl);
ip->i_gl = NULL;
if (ip->i_iopen_gh.gh_gl) {
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