From: Jan Schmidt <list.btrfs@jan-o-sch.net>
Date: Sat, 13 Apr 2013 13:19:55 +0000 (+0000)
Subject: Btrfs: fix unlock after free on rewinded tree blocks
X-Git-Tag: v3.10-rc1~31^2~54
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=47fb091fb787420cd195e66f162737401cce023f;p=pandora-kernel.git

Btrfs: fix unlock after free on rewinded tree blocks

When tree_mod_log_rewind decides to make a copy of the current tree buffer
for its modifications, it subsequently freed the buffer before unlocking it.
Obviously, those operations are required in reverse order.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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