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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next-2.6] net: propagate NETIF_F_HIGHDMA to vlans
Date: Sun, 26 Sep 2010 18:27:28 -0700 (PDT)
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From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 23 Sep 2010 12:46:11 +0200

> Automatically allows vlans to get NETIF_F_HIGHDMA if underlying device
> supports it.
> 
> On 32bit arches (and more precisely if CONFIG_HIGHMEM is enabled), it
> can help to reduce cost of illegal_highdma() and __skb_linearize()
> calls.
> 
> Tested on tg3 , bnx2, bonding, this worked very well.
> 
> This is a generalization of a patch provided by Yi Zou & Jeff Kirsher.
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>

Applied, thanks Eric.