From: Mikulas Patocka <mpatocka@redhat.com>
Date: Tue, 9 Jun 2015 21:22:49 +0000 (-0400)
Subject: dm stats: add support for request-based DM devices
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~116^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e262f34741522e0d821642e5449c6eeb512723fc;p=pandora-kernel.git

dm stats: add support for request-based DM devices

This makes it possible to use dm stats with DM multipath.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---

diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c
index faf1071ef631..8a8b48fa901a 100644
--- a/drivers/md/dm-stats.c
+++ b/drivers/md/dm-stats.c
@@ -1155,11 +1155,6 @@ int dm_stats_message(struct mapped_device *md, unsigned argc, char **argv,
 {
 	int r;
 
-	if (dm_request_based(md)) {
-		DMWARN("Statistics are only supported for bio-based devices");
-		return -EOPNOTSUPP;
-	}
-
 	/* All messages here must start with '@' */
 	if (!strcasecmp(argv[0], "@stats_create"))
 		r = message_stats_create(md, argc, argv, result, maxlen);
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