From: Mike Snitzer <snitzer@redhat.com>
Date: Thu, 1 May 2014 20:14:24 +0000 (-0400)
Subject: dm cache: fix writethrough mode quiescing in cache_map
X-Git-Tag: omap-for-v3.16/pm-signed~18^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=131cd131a9ff63d4b84f3fe15073a2984ac30066;p=pandora-kernel.git

dm cache: fix writethrough mode quiescing in cache_map

Commit 2ee57d58735 ("dm cache: add passthrough mode") inadvertently
removed the deferred set reference that was taken in cache_map()'s
writethrough mode support.  Restore taking this reference.

This issue was found with code inspection.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Cc: stable@vger.kernel.org # 3.13+
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