From: dingtianhong <dingtianhong@huawei.com>
Date: Fri, 13 Dec 2013 02:19:50 +0000 (+0800)
Subject: bonding: rebuild the lock use for bond_loadbalance_arp_mon()
X-Git-Tag: v3.14-rc1~94^2~495^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2e52f4fe3655c7a2311070c6713f7feabc75486c;p=pandora-kernel.git

bonding: rebuild the lock use for bond_loadbalance_arp_mon()

The bond_loadbalance_arp_mon() use the bond lock to protect the
bond slave list, it is no effect, so I could use RTNL or RCU to
replace it, considering the performance impact, the RCU is more
better here, so the bond lock replace with the RCU.

The bond_select_active_slave() need RTNL and curr_slave_lock
together, but there is no RTNL lock here, so add a rtnl_rtylock.

Suggested-by: Jay Vosburgh <fubar@us.ibm.com>
Suggested-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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