Re: [PATCH 1/3] net: introduce a list of device addresses dev_addr_list

David Miller
2009-04-15T10:16:11Z

From: Patrick McHardy <kaber@trash.net>
Date: Wed, 15 Apr 2009 12:13:57 +0200

> 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.

Indeed, that is true :-/