From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Wed, 15 Apr 2009 12:13:57 +0200
From: Patrick McHardy <kaber@trash.net>
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	<20090415.023104.82135803.davem@davemloft.net>
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Subject: Re: [Bridge] [PATCH 1/3] net: introduce a list of device addresses
	dev_addr_list
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To: David Miller <davem@davemloft.net>
Cc: ivecera@redhat.com, fubar@us.ibm.com, jpirko@redhat.com, netdev@vger.kernel.org, bridge@lists.linux-foundation.org, lizf@cn.fujitsu.com, linux-kernel@vger.kernel.org, mschmidt@redhat.com, dada1@cosmosbay.com, jgarzik@pobox.com, bonding-devel@lists.sourceforge.net

David Miller wrote:
> From: Eric Dumazet <dada1@cosmosbay.com>
> Date: Wed, 15 Apr 2009 11:27:50 +0200
> 
>> Since you obviously need a write lock here to be sure following
>> can be done by one cpu only.
>>
>> You have same problem all over this patch.
> 
> RTNL semaphore is held across all modification operations.

If this will also be used for multicast lists, changes can happen
(IPv6) without the RTNL.