netdev - Re: [PATCH net-next-2.6] vlan: remove one synchronize

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Date:	Mon, 09 May 2011 11:42:14 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	greearb@...delatech.com, kaber@...sh.net, netdev@...r.kernel.org,
	paulmck@...ux.vnet.ibm.com, jesse@...ira.com,
	mirq-linux@...e.qmqm.pl
Subject: Re: [PATCH net-next-2.6] vlan: remove one synchronize_net() call

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Mon, 09 May 2011 16:40:44 +0200

> At VLAN dismantle phase, unregister_vlan_dev() makes one
> synchronize_net() call after vlan_group_set_device(grp, vlan_id, NULL).
> 
> This call can be safely removed because we are calling
> unregister_netdevice_queue() to queue device for deletion, and this
> process needs at least one rcu grace period to complete.
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied.
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