linux-kernel - Re: [RFC PATCH v1 1/2] virtio_net: Pass gfp flags when allocating rx buffers.

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Date:	Thu, 05 Jan 2012 13:21:04 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	rusty@...tcorp.com.au
Cc:	mikew@...gle.com, mst@...hat.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org
Subject: Re: [RFC PATCH v1 1/2] virtio_net: Pass gfp flags when allocating
 rx buffers.

From: Rusty Russell <rusty@...tcorp.com.au>
Date: Thu, 05 Jan 2012 10:40:02 +1030

> On Wed, 04 Jan 2012 14:52:32 -0800, Mike Waychison <mikew@...gle.com> wrote:
>> Currently, the refill path for RX buffers will always allocate the
>> buffers as GFP_ATOMIC, even if we are in process context.  This will
>> fail to apply memory pressure as the worker thread will not contribute
>> to the freeing of memory.
>> 
>> Fix this by changing add_recvbuf_small to use the gfp variant allocator,
>> __netdev_alloc_skb_ip_align().
>> 
>> Signed-off-by: Mike Waychison <mikew@...gle.com>
> 
> OK, this is a no-brainer.  Thanks!  Dave, can you pick this up?
> 
> Acked-by: Rusty Russell <rusty@...tcorp.com.au>

Applied.
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