From: Josh Durgin <josh.durgin@inktank.com>
Date: Tue, 1 Oct 2013 00:09:54 +0000 (-0700)
Subject: rbd: move calls that may sleep out of spin lock range
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~24^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=77f33c03739697d01c2e730e4c2610424059ceaf;p=pandora-kernel.git

rbd: move calls that may sleep out of spin lock range

get_user() and set_disk_ro() may allocate memory, leading to a
potential deadlock if theye are called while a spin lock is held.

Move the acquisition and release of rbd_dev->lock from rbd_ioctl()
into rbd_ioctl_set_ro(), so it can occur between get_user() and
set_disk_ro().

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

Reading git-diff-tree failed