ocfs2: fix a GCC warning

Fix the following compile warning:

fs/ocfs2/dlmglue.c:99:30: warning: \91lockdep_keys\92 defined but not used [-Wunused-variable]
 static struct lock_class_key lockdep_keys[OCFS2_NUM_LOCK_TYPES];

Link: http://lkml.kernel.org/r/1536938148-32110-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 8e712b614e6e2ac541528d90cc75ea6f850a0e1e..933aac5da193415643b34a33e14db4fdb6fc29b5 100644 (file)
--- 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);