diff --git a/fs/direct-io.c b/fs/direct-io.c
index 0ec4f27..00b4d15 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -39,6 +39,8 @@
 #include <linux/atomic.h>
 #include <linux/prefetch.h>
 
+#include "internal.h"
+
 /*
  * How many user pages to map in one call to get_user_pages().  This determines
  * the size of a structure in the slab cache