netdev - Re: [PATCH net-next] net: introduce netdev_alloc

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Message-Id: <20120518.133144.1518569661201765520.davem@davemloft.net>
Date:	Fri, 18 May 2012 13:31:44 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: introduce netdev_alloc_frag()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Fri, 18 May 2012 17:12:12 +0200

> From: Eric Dumazet <edumazet@...gle.com>
> 
> Fix two issues introduced in commit a1c7fff7e18f5
> ( net: netdev_alloc_skb() use build_skb() )
> 
> - Must be IRQ safe (non NAPI drivers can use it)
> - Must not leak the frag if build_skb() fails to allocate sk_buff
> 
> This patch introduces netdev_alloc_frag() for drivers willing to
> use build_skb() instead of __netdev_alloc_skb() variants.
> 
> Factorize code so that :
> __dev_alloc_skb() is a wrapper around __netdev_alloc_skb(), and
> dev_alloc_skb() a wrapper around netdev_alloc_skb()
> 
> Use __GFP_COLD flag.
> 
> Almost all network drivers now benefit from skb->head_frag
> infrastructure.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied.
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