Initial suppor for sync_file_range()

This revs the ioengine to 11, as we now have another data direction.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/ioengine.h b/ioengine.h
index eb6655d..5acfbd2 100644
--- a/ioengine.h
+++ b/ioengine.h
@@ -1,7 +1,7 @@
 #ifndef FIO_IOENGINE_H
 #define FIO_IOENGINE_H
 
-#define FIO_IOOPS_VERSION	10
+#define FIO_IOOPS_VERSION	11
 
 enum {
 	IO_U_F_FREE		= 1 << 0,
@@ -153,6 +153,8 @@
 void io_u_mark_complete(struct thread_data *, unsigned int);
 void io_u_mark_submit(struct thread_data *, unsigned int);
 
+int do_sync_file_range(struct thread_data *, struct fio_file *);
+
 #ifdef FIO_INC_DEBUG
 static inline void dprint_io_u(struct io_u *io_u, const char *p)
 {