From 8092731b611778e6151662f3cc35d02101bd0ab8 Mon Sep 17 00:00:00 2001
From: Jonathan E Brassow <jbrassow@redhat.com>
Date: Wed, 7 Mar 2012 19:09:48 +0000
Subject: [PATCH 91/95] dm raid: fix flush support

commit 0ca93de9b789e0eb05e103f0c04de72df13da73a upstream.

Fix dm-raid flush support.

Both md and dm have support for flush, but the dm-raid target
forgot to set the flag to indicate that flushes should be
passed on.  (Important for data integrity e.g. with writeback cache
enabled.)

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/dm-raid.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 4834d43..d2a3223 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -974,6 +974,7 @@ static int raid_ctr(struct dm_target *ti, unsigned argc, char **argv)
 
 	INIT_WORK(&rs->md.event_work, do_table_event);
 	ti->private = rs;
+	ti->num_flush_requests = 1;
 
 	mutex_lock(&rs->md.reconfig_mutex);
 	ret = md_run(&rs->md);
-- 
1.7.9.4

