tree dd514cc2bf29f73a00e677b963950b2f349a0042
parent ec0bddbc5574ea5903cec8f30ed57777f14d86a8
author Philipp Reisner <philipp.reisner@linbit.com> 1304604790 +0200
committer Philipp Reisner <philipp.reisner@linbit.com> 1352390148 +0100

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>