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Date: Tue, 10 Jul 2007 13:04:05 +0200 From: Peter Zijlstra <a.p.zijlstra@...llo.nl> To: Mel Gorman <mel@...net.ie> Cc: Andrew Morton <akpm@...ux-foundation.org>, npiggin@...e.de, kenchen@...gle.com, jschopp@...tin.ibm.com, apw@...dowen.org, kamezawa.hiroyu@...fujitsu.com, y-goto@...fujitsu.com, clameter@....com, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: -mm merge plans -- anti-fragmentation On Tue, 2007-07-10 at 11:20 +0100, Mel Gorman wrote: <snip> > > lumpy-reclaim-v4.patch > > This patch is really what lumpy reclaim is. I believe Peter has looked > at this and was happy enough at the time although he is cc'd here again > in case this has changed. This is mainly useful with either grouping > pages by mobility or the ZONE_MOVABLE stuff. However, at the time the > patch was proposed, there was a feeling that it might help jumbo frame > allocation on e1000's and maybe if fsblock optimistically uses > contiguous pages it would have an application. I would like to see it go > through to see does it help e1000 at least. I'm not seeing how this will help e1000 (and other jumbo drivers). They typically allocate using GFP_ATOMIC, so in order to satisfy those you'd need to either have a higher order watermark or do atomic defrag of the free space. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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