3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jonathan E Brassow <[email protected]>

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 <[email protected]>
Acked-by: Mike Snitzer <[email protected]>
Signed-off-by: Alasdair G Kergon <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 drivers/md/dm-raid.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -974,6 +974,7 @@ static int raid_ctr(struct dm_target *ti
 
        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);


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