Re: [Lsf-pc] [LSF/MM TOPIC][ATTEND] a few topics I'd like to discuss

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On Sun, Feb 17, 2013 at 01:44:33AM -0500, KOSAKI Motohiro wrote:
> Sorry for the delay.
> 
> I would like to discuss the following topics:
> 
> 
> 
> * Hugepage migration ? Currently, hugepage is not migratable and can?t
> use pages in ZONE_MOVABLE.  It is not happy from point of CMA/hotplug
> view.
> 

migrate_huge_page() ?

It's also possible to allocate hugetlbfs pages in ZONE_MOVABLE but must
be enabled via /proc/sys/vm/hugepages_treat_as_movable.

> * Remove ZONE_MOVABLE ?Very long term goal. Maybe not suitable in this year.
> 

Whatever about removing it totally I would like to see node memory hot-remove
not depending on ZONE_MOVABLE.

-- 
Mel Gorman
SUSE Labs

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