From: Josh Durgin <josh.durgin@inktank.com>
Date: Tue, 1 Oct 2013 03:10:04 +0000 (-0700)
Subject: rbd: only set disk to read-only once
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~24^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=22001f619f29ddf66582d834223dcff4c0b74595;p=pandora-kernel.git

rbd: only set disk to read-only once

rbd_open(), called every time the device is opened, calls
set_device_ro().  There's no reason to set the device read-only or
read-write every time it is opened. Just do this once during device
setup, using set_disk_ro() instead because the struct block_device
isn't available to us there.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
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