From 131fd9f6fc89ad2cc993f80664d18ca49d6f8483 Mon Sep 17 00:00:00 2001
From: Guangliang Zhao <guangliang@unitedstack.com>
Date: Tue, 24 Sep 2013 11:25:36 +0800
Subject: [PATCH] rbd: add ioctl for rbd

When running the following commands:
    [root@ceph0 mnt]# blockdev --setro /dev/rbd1
    [root@ceph0 mnt]# blockdev --getro /dev/rbd1
    0

The block setro didn't take effect, it is because
the rbd doesn't support ioctl of block driver.

This resolves:
	http://tracker.ceph.com/issues/6265

Signed-off-by: Guangliang Zhao <guangliang@unitedstack.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
---
Reading git-format-patch failed