[GFS2] Remove local exclusive glock mode

Here is a patch for GFS2 to remove the local exclusive flag. In
the places it was used, mutex's are always held earlier in the
call path, so it appears redundant in the LM_ST_SHARED case.

Also, the GFS2 holders were setting local exclusive in any case where
the requested lock was LM_ST_EXCLUSIVE. So the other places in the glock
code where the flag was tested have been replaced with tests for the
lock state being LM_ST_EXCLUSIVE in order to ensure the logic is the
same as before (i.e. LM_ST_EXCLUSIVE is always locally exclusive as well
as globally exclusive).

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index fbf55063928f..4855e8cca622 100644
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -216,8 +216,7 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
         }
 
         error = gfs2_glock_nq_num(sdp, inum->no_addr, &gfs2_inode_glops,
-                                  LM_ST_SHARED, LM_FLAG_ANY | GL_LOCAL_EXCL,
-                                  &i_gh);
+                                  LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
         if (error)
                 return ERR_PTR(error);