From: Joe Thornber <ejt@redhat.com>
Date: Fri, 27 Jul 2012 14:08:07 +0000 (+0100)
Subject: dm thin: set flush_supported
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=16ad3d103dbec4fe6c5950d5a6c383ba9a5296ef;p=linux-beck.git

dm thin: set flush_supported

The thin provisioning target commits internal metadata on flush.  So it
should receive flushes regardless of whether the underlying devices
support them.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---

diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 7510cb3d571c..ee5a3fc93b0e 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2652,6 +2652,7 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv)
 		goto bad_thin_open;
 
 	ti->num_flush_requests = 1;
+	ti->flush_supported = true;
 
 	/* In case the pool supports discards, pass them on. */
 	if (tc->pool->pf.discard_enabled) {