netdev - Re: X or AF_UNIX and order 3 allocation

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Message-ID: <20080416085213.1e55bd1e@extreme>
Date:	Wed, 16 Apr 2008 08:52:13 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	David Miller <davem@...emloft.net>
Cc:	zaitcev@...hat.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: X or AF_UNIX and order 3 allocation

On Tue, 15 Apr 2008 21:51:44 -0700 (PDT)
David Miller <davem@...emloft.net> wrote:

> From: Pete Zaitcev <zaitcev@...hat.com>
> Date: Tue, 15 Apr 2008 21:10:55 -0700
> 
> > Hi, Guys:
> > 
> > Not sure if the problem is caused by X or kernel, but this is what
> 
> It seems to be the b44 driver doing a large huge order allocation.
> 
> That driver only asks for (1536 + 30 + 64) bytes, so I suppose part of
> the problem is that SLAB is using an order 3 allocation to satisfy
> that.
>

The chip needs memory below 1G for DMA, perhaps low memory is getting
exhausted.
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