diff --git a/fs/f2fs/trace.c b/fs/f2fs/trace.c
index b3570dcca945..ce01a2c903bd 100644
--- a/fs/f2fs/trace.c
+++ b/fs/f2fs/trace.c
@@ -17,7 +17,7 @@
 #include "trace.h"
 
 RADIX_TREE(pids, GFP_ATOMIC);
-spinlock_t pids_lock;
+static spinlock_t pids_lock;
 struct last_io_info last_io;
 
 static inline void __print_last_io(void)