From: Miao Xie <miaox@cn.fujitsu.com>
Date: Wed, 19 Jun 2013 10:20:17 +0000 (+0800)
Subject: Btrfs: fix wrong mirror number tuning
X-Git-Tag: v3.11-rc1~70^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a70c6172e714c70439b8321a201635f56a178913;p=pandora-kernel.git

Btrfs: fix wrong mirror number tuning

Now reading the data from the target device of the replace operation is allowed,
so the mirror number that is greater than the stripes number of a chunk is valid,
we will tune it when we find there is no target device later. Fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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