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

David Miller davem at davemloft.net
Wed Apr 15 03:15:10 PDT 2009


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

> David Miller wrote:
>> From: Eric Dumazet <dada1 at 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 :-/


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