linux-kernel - Re: [PATCH 3/8] Allow huge page allocations to use GFP_HIGH

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Message-ID: <Pine.LNX.4.64.0701261720120.23091@skynet.skynet.ie>
Date:	Fri, 26 Jan 2007 17:20:47 +0000 (GMT)
From:	Mel Gorman <mel@....ul.ie>
To:	Christoph Lameter <clameter@....com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/8] Allow huge page allocations to use GFP_HIGH_MOVABLE

On Fri, 26 Jan 2007, Christoph Lameter wrote:

> On Fri, 26 Jan 2007, Mel Gorman wrote:
>
>> Because Andrew has made it pretty clear he will not take those patches on the
>> grounds of complexity - at least until it can be shown that they fix the e1000
>> problem. Any improvement on the behavior of those patches such as address
>> biasing to allow memory hot-remove of the higher addresses makes them even
>> more complex.
>
> What is the e1000 problem? Jumbo packet allocation via GFP_KERNEL?
>

Yes. Potentially the anti-fragmentation patches could address this by 
clustering atomic allocations together as much as possible.

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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