From: Josh Durgin <josh.durgin@inktank.com>
Date: Sat, 5 Apr 2014 00:47:52 +0000 (-0700)
Subject: rbd: fix snapshot context reference count for discards
X-Git-Tag: omap-for-v3.19/prcm-cleanup~68^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bef95455a44e2533fcea376740bb1a5cbd71269f;p=pandora-kernel.git

rbd: fix snapshot context reference count for discards

Discards take a reference to the snapshot context of an image when
they are created.  This reference needs to be cleaned up when the
request is done just as it is for regular writes.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
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