linux-kernel - Re: [net-next PATCH] net: Reserve skb headroom and set skb->dev even if using __alloc

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Message-Id: <20150513.180744.973850573845788118.davem@davemloft.net>
Date:	Wed, 13 May 2015 18:07:44 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	alexander.h.duyck@...hat.com
Cc:	linux-kernel@...r.kernel.org, balbi@...com, tony@...mide.com,
	netdev@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [net-next PATCH] net: Reserve skb headroom and set skb->dev
 even if using __alloc_skb

From: Alexander Duyck <alexander.h.duyck@...hat.com>
Date: Wed, 13 May 2015 13:34:13 -0700

> When I had inlined __alloc_rx_skb into __netdev_alloc_skb and
> __napi_alloc_skb I had overlooked the fact that there was a return in the
> __alloc_rx_skb.  As a result we weren't reserving headroom or setting the
> skb->dev in certain cases.  This change corrects that by adding a couple of
> jump labels to jump to depending on __alloc_skb either succeeding or failing.
> 
> Fixes: 9451980a6646 ("net: Use cached copy of pfmemalloc to avoid accessing page")
> Reported-by: Felipe Balbi <balbi@...com>
> Signed-off-by: Alexander Duyck <alexander.h.duyck@...hat.com>

Applied, thanks.
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