netdev - Re: [PATCH net-next-2.6] tg3: 64bits stats

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Message-ID: <1278345780.2877.376.camel@edumazet-laptop>
Date:	Mon, 05 Jul 2010 18:03:00 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Matt Carlson <mcarlson@...adcom.com>
Cc:	Michael Chan <mchan@...adcom.com>, netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>
Subject: Re: [PATCH net-next-2.6] tg3: 64bits stats

Le lundi 05 juillet 2010 à 11:14 +0200, Eric Dumazet a écrit :
> After commit be1f3c2c027c (net: Enable 64-bit net device statistics on
> 32-bit architectures), we can now provide 64bit stats, even on 32bit
> arches.
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
> ---

Please disregard this patch.

There is small possibility a reader might read a 64bit value while
another writer makes a change to it, changing high 32bit value.

A change in core network would be needed to make this 100% safe,
possibly using a seqlock to protect dev->stats64



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