diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 017ab44d572a..911d5d80b49f 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -4,6 +4,7 @@
 #ifdef CONFIG_FTRACE
 
 #include <linux/linkage.h>
+#include <linux/fs.h>
 
 extern int ftrace_enabled;
 extern int