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authorBenjamin Marzinski <bmarzins@redhat.com>2008-03-14 13:52:52 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2008-03-31 10:41:44 +0100
commit58e9fee13e579df44922172dbe3c9e3ba3edf7a3 (patch)
tree7b134f28032a3cd498b2d9a18c02ea085c0725e2 /fs/gfs2/ops_fstype.c
parentf5a8cd020173c455705fc0095b7d299da6f8f87b (diff)
downloadconfigs-58e9fee13e579df44922172dbe3c9e3ba3edf7a3.tar.gz
[GFS2] Invalidate cache at correct point
GFS2 wasn't invalidating its cache before it called into the lock manager with a request that could potentially drop a lock. This was leaving a window where the lock could be actually be held by another node, but the file's page cache would still appear valid, causing coherency problems. This patch moves the cache invalidation to before the lock manager call when dropping a lock. It also adds the option to the lock_dlm lock manager to not use conversion mode deadlock avoidance, which, on a conversion from shared to exclusive, could internally drop the lock, and then reacquire in. GFS2 now asks lock_dlm to not do this. Instead, GFS2 manually drops the lock and reacquires it. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/ops_fstype.c')
-rw-r--r--fs/gfs2/ops_fstype.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 5b518f73497..ef9c6c4f80f 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -723,7 +723,7 @@ static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent)
{
char *proto = sdp->sd_proto_name;
char *table = sdp->sd_table_name;
- int flags = 0;
+ int flags = LM_MFLAG_CONV_NODROP;
int error;
if (sdp->sd_args.ar_spectator)