diff --git a/fs/ocfs2/reservations.c b/fs/ocfs2/reservations.c
index 41ffd36..6a348b0 100644
--- a/fs/ocfs2/reservations.c
+++ b/fs/ocfs2/reservations.c
@@ -39,7 +39,7 @@
 #define OCFS2_CHECK_RESERVATIONS
 #endif
 
-DEFINE_SPINLOCK(resv_lock);
+static DEFINE_SPINLOCK(resv_lock);
 
 #define	OCFS2_MIN_RESV_WINDOW_BITS	8
 #define	OCFS2_MAX_RESV_WINDOW_BITS	1024