From: Guangliang Zhao <guangliang@unitedstack.com>
Date: Tue, 24 Sep 2013 03:25:36 +0000 (+0800)
Subject: rbd: add ioctl for rbd
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~24^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=131fd9f6fc89ad2cc993f80664d18ca49d6f8483;p=pandora-kernel.git

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-diff-tree failed