From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 19 May 2011 19:37:40 +0000 (+0000)
Subject: net: remove synchronize_net() from netdev_set_master()
X-Git-Tag: v3.0-rc1~351^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6df427fe8c481d3be437cbe8bd366bdac82b73c4;p=pandora-kernel.git

net: remove synchronize_net() from netdev_set_master()

In the old days, we used to access dev->master in __netif_receive_skb()
in a rcu_read_lock section.

So one synchronize_net() call was needed in netdev_set_master() to make
sure another cpu could not use old master while/after we release it.

We now use netdev_rx_handler infrastructure and added one
synchronize_net() call in bond_release()/bond_release_all()

Remove the obsolete synchronize_net() from netdev_set_master() and add
one in bridge del_nbp() after its netdev_rx_handler_unregister() call.

This makes enslave -d a bit faster.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Jiri Pirko <jpirko@redhat.com>
CC: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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