From: Qu Wenruo <quwenruo@cn.fujitsu.com>
Date: Tue, 5 May 2015 02:53:15 +0000 (+0800)
Subject: btrfs: Fix superblock csum type check.
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~69^2~50
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f6e4b3f9f7c859fed7ac4c0853e976a1a752873;p=pandora-kernel.git

btrfs: Fix superblock csum type check.

Old csum type check is wrong and can't catch csum_type 1(not supported).

Fix it to avoid hostile 0 division.

Reported-by: Lukas Lueg <lukas.lueg@gmail.com>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
---

Reading git-diff-tree failed