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SubjectRe: [PATCH 0/8] Use memory compaction instead of lumpy reclaim during high-order allocations
On Fri, Nov 19, 2010 at 07:43:02AM -0500, Theodore Tso wrote:
>
> On Nov 19, 2010, at 5:48 AM, Mel Gorman wrote:
>
> > At least as long as !CONFIG_COMPACTION exists. That will be a while because
> > bear in mind CONFIG_COMPACTION is disabled by default (although I believe
> > some distros are enabling it at least). Maybe we should choose to deprecate
> > it in 2.6.40 and delete it at the infamous time of 2.6.42? That would give
> > ample time to iron out any issues that crop up with reclaim/compaction
> > (what this series has turned into).
>
> How about making the default before 2.6.40, as an initial step?
>

It'd be a reasonable way of ensuring it's being tested everywhere
and not by those that are interested or using distro kernel configs.
I guess we'd set to "default y" in the same patch that adds the note to
feature-removal-schedule.txt.

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


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