From: Tejun Heo <tj@kernel.org>
Date: Mon, 4 Jun 2012 06:21:00 +0000 (+0900)
Subject: blkcg: fix blkg_alloc() failure path
X-Git-Tag: v3.5-rc6~20^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9b2ea86bc9e940950a088e9795ab28f006e73276;p=pandora-kernel.git

blkcg: fix blkg_alloc() failure path

When policy data allocation fails in the middle, blkg_alloc() invokes
blkg_free() to destroy the half constructed blkg.  This ends up
calling pd_exit_fn() on policy datas which didn't go through
pd_init_fn().  Fix it by making blkg_alloc() call pd_init_fn()
immediately after each policy data allocation.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

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