--- 64acd05f71c8743330e47a1d9883fc59acc22081
+++ 9abc3a19d53a033e7ff64dd5e68306fc97a2ddb4
@@ -247,6 +247,7 @@ static const struct file_operations raw_
 	.aio_read = 	generic_file_aio_read,
 	.write	=	do_sync_write,
 	.aio_write =	blkdev_aio_write,
+	.fsync	=	block_fsync,
 	.open	=	raw_open,
 	.release=	raw_release,
 	.ioctl	=	raw_ioctl,