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/fio.h b/fio.h
index f00f64a..05911c0 100644
--- a/fio.h
+++ b/fio.h
@@ -282,6 +282,8 @@
 
 	unsigned int uid;
 	unsigned int gid;
+
+	unsigned int sync_file_range;
 };
 
 #define FIO_VERROR_SIZE	128
@@ -417,6 +419,8 @@
 	unsigned int file_service_left;
 	struct fio_file *file_service_file;
 
+	unsigned int sync_file_range_nr;
+
 	/*
 	 * For generating file sizes
 	 */