From 79aec2b80db1089f983d60e4a22cb95d8b939844 Mon Sep 17 00:00:00 2001
From: Anand Jain <Anand.Jain@oracle.com>
Date: Wed, 30 Jul 2014 20:04:10 +0800
Subject: [PATCH] btrfs: sysfs label interface should check for read only FS

Not sure how this escaped many eyes so far

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
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Reading git-format-patch failed