From: Tetsuo Takata <takatan.linux@gmail.com>

q->ordered is not being set properly.  This causes `-o barrier' to not work,
and makes XFS say

Filesystem "sdb1": Disabling barriers, not supported by the underlying device

Signed-off-by: Tetsuo Takata <takatatt@intellilink.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 block/ll_rw_blk.c |    1 +
 1 files changed, 1 insertion(+)

diff -puN block/ll_rw_blk.c~enable-xfs-write-barrier block/ll_rw_blk.c
--- devel/block/ll_rw_blk.c~enable-xfs-write-barrier	2006-01-23 14:51:33.000000000 -0800
+++ devel-akpm/block/ll_rw_blk.c	2006-01-23 14:51:33.000000000 -0800
@@ -333,6 +333,7 @@ int blk_queue_ordered(request_queue_t *q
 		return -EINVAL;
 	}
 
+	q->ordered = ordered;
 	q->next_ordered = ordered;
 	q->prepare_flush_fn = prepare_flush_fn;
 
_