linux-kernel - Re: [PATCH] virtio-net: move sg off stack

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Date:	Tue, 6 Apr 2010 12:44:28 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	David Miller <davem@...emloft.net>
Cc:	mst@...hat.com, jpirko@...hat.com, xma@...ibm.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] virtio-net: move sg off stack

On Fri, 2 Apr 2010 12:56:48 pm David Miller wrote:
> From: "Michael S. Tsirkin" <mst@...hat.com>
> Date: Wed, 31 Mar 2010 15:41:58 +0300
> 
> > Move sg structure off stack and into virtnet_info structure.
> > This helps remove extra sg_init_table calls as well as reduce
> > stack usage.
> > 
> > Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> > ---
> > 
> > Compile-tested only for now.
> > Shirley, Rusty Russell, does this fix CONFIG_DEBUG_SG=y for you?

Yes, this fixes the BUG_ON() for me (trivial changes to base on Linus'
tree only).

Thanks,
Rusty.
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