From: Julian Anastasov <ja@ssi.bg>
Date: Fri, 22 Mar 2013 09:46:37 +0000 (+0200)
Subject: ipvs: preparations for using rcu in schedulers
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~65^2~235^2~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6b6df46663e7aa6f7b1d82435a3488f9b81316b3;p=pandora-kernel.git

ipvs: preparations for using rcu in schedulers

Allow schedulers to use rcu_dereference when
returning destination on lookup. The RCU read-side critical
section will allow ip_vs_bind_dest to get dest refcnt as
preparation for the step where destinations will be
deleted without an IP_VS_WAIT_WHILE guard that holds the
packet processing during update.

	Add new optional scheduler methods add_dest,
del_dest and upd_dest. For now the methods are called
together with update_service but update_service will be
removed in a following change.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
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