Add kcompat.h

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/kcompat.h b/kcompat.h
new file mode 100644
index 0000000..9ef1f33
--- /dev/null
+++ b/kcompat.h
@@ -0,0 +1,9 @@
+#ifndef _KCOMPAT_H_
+#define _KCOMPAT_H_
+
+#include <stdint.h>
+
+#define u64 uint64_t
+#define u32 uint32_t
+
+#endif