--- a/file.c.orig
+++ b/file.c
@@ -25,6 +25,7 @@
 /* Must come before any kernel header file. */
 #include "driver-config.h"
 
+#include <linux/aio.h>
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/signal.h>