[PATCH] ocfs2: Fix a GCC compiled warning.

[zhong jiang]

Fix the following compile warning:

fs/ocfs2/dlmglue.c:99:30: warning: Âlockdep_keys defined but not used [-Wunused-variable]
 static struct lock_class_key lockdep_keys[OCFS2_NUM_LOCK_TYPES];

Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
---
 fs/ocfs2/dlmglue.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 040ddb6..7c83582 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -96,7 +96,9 @@ struct ocfs2_unblock_ctl {
 };
 
 /* Lockdep class keys */
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
 static struct lock_class_key lockdep_keys[OCFS2_NUM_LOCK_TYPES];
+#endif
 
 static int ocfs2_check_meta_downconvert(struct ocfs2_lock_res *lockres,
 					int new_level);
-- 
1.7.12.4