linux-kernel - Re: mmotm 2010-04-28

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Message-ID: <4BE8290A.2080707@trash.net>
Date:	Mon, 10 May 2010 17:40:58 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	David Miller <davem@...emloft.net>
CC:	eric.dumazet@...il.com, Valdis.Kletnieks@...edu,
	akpm@...ux-foundation.org, peterz@...radead.org,
	linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org,
	netdev@...r.kernel.org, paulmck@...ux.vnet.ibm.com
Subject: Re: mmotm 2010-04-28 - RCU whinges

David Miller wrote:
> From: Eric Dumazet <eric.dumazet@...il.com>
> Date: Mon, 03 May 2010 07:43:56 +0200
> 
>> Le lundi 03 mai 2010 à 07:41 +0200, Eric Dumazet a écrit :
>>
>>> Oops scratch that, I'll resend a correct version.
>>>
>>>
>> Sorry, patch _is_ fine, I had one brain collapse when re-reading it, I
>> thought a different mutex was in use in one of the functions.
> 
> Ok, Patrick please review, thanks.

Actually we don't need the rcu_dereference() calls at all since
registration and unregistration are protected by the mutexes.

I queued this patch in nf-next, the only reason why I haven't
submitted it yet is that I was unable to get git to cleanly export
only the proper set of patches meant for -next due to a few merges,
it insists on including 5 patches already merged upstream. If you
don't mind ignoring the first 5 patches in the series, I'll send a
pull request tonight.

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