From: Lars Ellenberg <lars.ellenberg@linbit.com>
Date: Tue, 19 Mar 2013 17:16:45 +0000 (+0100)
Subject: drbd: use the cached meta_dev_idx
X-Git-Tag: omap-for-v3.10/fixes-for-merge-window-part2~10^2~51
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=68e41a43f18b681f83329c8ad83123571bb8db0d;p=pandora-kernel.git

drbd: use the cached meta_dev_idx

Now we have the cached meta_dev_idx member,
we can get rid of a few rcu_read_lock() sections and rcu_dereference().

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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