Message-ID: <49E5B365.2010008@trash.net>
Date: Wed, 15 Apr 2009 12:13:57 +0200
From: Patrick McHardy <kaber@trash.net>
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To: David Miller <davem@davemloft.net>
CC: dada1@cosmosbay.com, jpirko@redhat.com, lizf@cn.fujitsu.com,
       linux-kernel@vger.kernel.org, netdev@vger.kernel.org, jgarzik@pobox.com,
       shemminger@linux-foundation.org, bridge@lists.linux-foundation.org,
       fubar@us.ibm.com, bonding-devel@lists.sourceforge.net,
       mschmidt@redhat.com, ivecera@redhat.com
Subject: Re: [PATCH 1/3] net: introduce a list of device addresses dev_addr_list
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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.
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