From: Philipp Reisner <philipp.reisner@linbit.com>
Date: Thu, 5 May 2011 14:13:10 +0000 (+0200)
Subject: drbd: Removing drbd_cfg_rwsem
X-Git-Tag: v3.8-rc1~78^2~18^2~218
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c141ebda031a0550d75634f7c94f7c85c2d5c9f5;p=pandora-kernel.git

drbd: Removing drbd_cfg_rwsem

 * Updates to all configuration items is done under genl_lock().
   Including removal of mdevs or tconns.
 * All read non sleeping read sides are protected by rcu
 * All sleeping read sides keep reference counts to keep the
   objects alive

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
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