netdev - Re: [PATCH] net-packet: tx timestamping on tpacket ring

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Message-Id: <20130413.184727.1419644906707693070.davem@davemloft.net>
Date:	Sat, 13 Apr 2013 18:47:27 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	dborkman@...hat.com
Cc:	willemb@...gle.com, paul.chavent@...ra.fr,
	richardcochran@...il.com, edumazet@...gle.com,
	daniel.borkmann@....ee.ethz.ch, xemul@...allels.com,
	ebiederm@...ssion.com, netdev@...r.kernel.org
Subject: Re: [PATCH] net-packet: tx timestamping on tpacket ring

From: Daniel Borkmann <dborkman@...hat.com>
Date: Sun, 14 Apr 2013 00:18:48 +0200

>> +		flush_dcache_page(pgv_to_page(&h1->tp_sec));
>> +		flush_dcache_page(pgv_to_page(&h1->tp_usec));
> 
> Hmm, not sure, but could we also flush the dcache only once?

Indeed, I truly hope that headers never straddle pages.
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