On 02/18/2013 10:50 PM, Mel Gorman wrote:
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 seems that migrate_huge_page just called in memory failure path, why
can't support in memory hotplug path?
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.
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