From: Lukas Czerner <lczerner@redhat.com>
Date: Fri, 7 Dec 2012 10:09:19 +0000 (+0000)
Subject: btrfs: get the device in write mode when deleting it
X-Git-Tag: v3.8-rc5~1^2~10^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc975eb4605c5765a5d5e7a51d24ba5a1cda269e;p=pandora-kernel.git

btrfs: get the device in write mode when deleting it

When we're deleting the device we should get it in write mode since
we're going to re-write the super block magic on that device. And it
should fail if the device is read-only.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
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