From: Yan <yanzheng@21cn.com>
Date: Tue, 4 Dec 2007 18:20:20 +0000 (-0500)
Subject: Btrfs: Fix buffer get/release issue in create_snapshot
X-Git-Tag: v2.6.29-rc1~27^2~9^2~55^2~56^2~30^2~390
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9691975dd663b255fa52404dc7de4b18892bf244;p=pandora-kernel.git

Btrfs: Fix buffer get/release issue in create_snapshot
btrfs_cow_block expects a reference to be held on the buffer being cow'd.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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