[DLM] Update DLM to the latest patch level

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steve Whitehouse <swhiteho@redhat.com>
diff --git a/fs/dlm/lock.h b/fs/dlm/lock.h
index 9e6499f..bffab9c 100644
--- a/fs/dlm/lock.h
+++ b/fs/dlm/lock.h
@@ -38,12 +38,12 @@
 
 static inline void lock_rsb(struct dlm_rsb *r)
 {
-	down(&r->res_sem);
+	mutex_lock(&r->res_mutex);
 }
 
 static inline void unlock_rsb(struct dlm_rsb *r)
 {
-	up(&r->res_sem);
+	mutex_unlock(&r->res_mutex);
 }
 
 #endif