From: Heinz Mauelshagen <heinzm@redhat.com>
Date: Wed, 20 Mar 2013 17:21:26 +0000 (+0000)
Subject: dm cache: detect cache_create failure
X-Git-Tag: v3.9-rc4~20^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=617a0b89da4898d4cc990c9eb4bc9c0591c538a5;p=pandora-kernel.git

dm cache: detect cache_create failure

Return error if cache_create() fails.

A missing return check made cache_ctr continue even after an error in
cache_create() resulting in the cache object being destroyed.  So a
simple failure like an odd number of cache policy config value arguments
would result in an oops.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---

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