linux-kernel - Re: [net-next-2.6 PATCH 1/2] skbuff: add check for non-linear to warn_if_lro and needs

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Message-Id: <20100605.025423.258132771.davem@davemloft.net>
Date:	Sat, 05 Jun 2010 02:54:23 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeffrey.t.kirsher@...el.com
Cc:	mingo@...hat.com, tglx@...utronix.de, hpa@...or.com,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, gospo@...hat.com,
	alexander.h.duyck@...el.com
Subject: Re: [net-next-2.6 PATCH 1/2] skbuff: add check for non-linear to
 warn_if_lro and needs_linearize

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Wed, 02 Jun 2010 15:24:37 -0700

> From: Alexander Duyck <alexander.h.duyck@...el.com>
> 
> We can avoid an unecessary cache miss by checking if the skb is non-linear
> before accessing gso_size/gso_type in skb_warn_if_lro, the same can also be
> done to avoid a cache miss on nr_frags if data_len is 0.
> 
> Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>

Applied.
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