[PATCH] Remember to define OS_O_DIRECT to OS type if available
diff --git a/os.h b/os.h
index 1160f44..1bce2f6 100644
--- a/os.h
+++ b/os.h
@@ -42,7 +42,9 @@
 #endif
 
 #ifndef FIO_HAVE_ODIRECT
-#define OS_O_DIRECT			(0)
+#define OS_O_DIRECT			0
+#else
+#define OS_O_DIRECT			O_DIRECT
 #endif
 
 struct thread_data;