Messages in this thread | | | Subject | Re: -mm merge plans -- anti-fragmentation | From | Peter Zijlstra <> | Date | Tue, 10 Jul 2007 13:04:05 +0200 |
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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.
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