[PATCH] Allow io engine to do the file setup

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/fio.h b/fio.h
index 112736c..db39ea1 100644
--- a/fio.h
+++ b/fio.h
@@ -455,6 +455,7 @@
 	char name[16];
 	int version;
 	int flags;
+	int (*setup)(struct thread_data *);
 	int (*init)(struct thread_data *);
 	int (*prep)(struct thread_data *, struct io_u *);
 	int (*queue)(struct thread_data *, struct io_u *);