From: Zhao Lei <zhaolei@cn.fujitsu.com>
Date: Tue, 20 Jan 2015 07:11:31 +0000 (+0800)
Subject: Btrfs: fix a out-of-bound access of raid_map
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~34^2~40
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e34c330d639177bbb345bf2bde16613b00cc6e6b;p=pandora-kernel.git

Btrfs: fix a out-of-bound access of raid_map

We add the number of stripes on target devices into bbio->num_stripes
if we are under device replacement, and we just sort the raid_map of
those stripes that not on the target devices, so if when we need
real raid_map, we need skip the stripes on the target devices.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
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