Re: [PATCH] netfilter: remove an atomic bit operation

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On Sun, Nov 21, 2010 at 12:50 AM, Eric Dumazet <eric.dumazet@xxxxxxxxx> wrote:
> Le samedi 20 novembre 2010 à 09:03 -0700, Tim Gardner a écrit :
>
>> NAK, set_bit() takes a bit number, not a mask. That is, assuming you can
>> get away with a non-atomic operation on this field. I'll defer to
>> Patrick on that.
>>
>> I think you have to use IPS_CONFIRMED instead, e.g.,
>>
>>       ct->status |= IPS_CONFIRMED;
>>
>
> Or
>
>        __set_bit(IPS_CONFIRMED_BIT, &ct->status);
>
>
> set_bit() is atomic, while __set_bit() is not
>

Oh, you are right. Thanks. My a previous patch accepted by Patrick has
the same problem.

-- 
Regards,
Changli Gao(xiaosuo@xxxxxxxxx)
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