[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, 0 insertions, 1 deletions

diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index ddc56dc4ec9f..1eaeacdd14a4 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -20,7 +20,6 @@
 #define LM_FLAG_ANY             0x00000008
 #define LM_FLAG_PRIORITY        0x00000010 */
 
-#define GL_LOCAL_EXCL           0x00000020
 #define GL_ASYNC                0x00000040
 #define GL_EXACT                0x00000080
 #define GL_SKIP                 0x00000100