--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -1,6 +1,7 @@
#ifndef _LINUX_TYPES_H
#define _LINUX_TYPES_H
+typedef unsigned long long __u64;
#include <linux/posix_types.h>
#include <asm/types.h>
#include <stdbool.h>