From e57138b3e96e45a63124492e736612378096290f Mon Sep 17 00:00:00 2001
From: Anand Jain <Anand.Jain@oracle.com>
Date: Wed, 21 Aug 2013 11:44:48 +0800
Subject: [PATCH] btrfs: return btrfs error code for dev excl ops err

now threads can return BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS
as defined in btrfs.h for the dev excl operation error in
the FS, which means with this kernel would stop logging
(almost an user error) into the /var/log/messages

v2: accepts Josef' comment

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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