dlm: Change rwlock which is only used in write mode to a spinlock

The ls_dirtbl[].lock was an rwlock, but since it was only used in write
mode a spinlock will suffice.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index 076e86f38bc8..d01ca0a711db 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -99,7 +99,7 @@ struct dlm_direntry {
 
 struct dlm_dirtable {
         struct list_head        list;
-        rwlock_t                lock;
+        spinlock_t              lock;
 };
 
 struct dlm_rsbtable {