From: Yan, Zheng <zheng.yan@oracle.com>
Date: Mon, 1 Feb 2010 02:41:17 +0000 (+0000)
Subject: Btrfs: Fix oopsen when dropping empty tree.
X-Git-Tag: v2.6.33-rc7~9^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7a7965f83e89f0be506a96769938a721e4e5ae50;p=pandora-kernel.git

Btrfs: Fix oopsen when dropping empty tree.

When dropping a empty tree, walk_down_tree() skips checking
extent information for the tree root. This will triggers a
BUG_ON in walk_up_proc().

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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