From: NeilBrown <neilb@suse.de>
Date: Mon, 29 Sep 2014 05:33:20 +0000 (+1000)
Subject: md: Just use RCU when checking for overlap between arrays.
X-Git-Tag: omap-for-v3.19/prcm-cleanup~52^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8b1afc3d6751063d3f0cdefe55719b1cd2f7edcc;p=pandora-kernel.git

md: Just use RCU when checking for overlap between arrays.

We don't really need the full mddev_lock here, and having to
drop it is messy.
RCU is enough to protect these lists.

Signed-off-by: NeilBrown <neilb@suse.de>
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