Re: [PATCH v2] mm, page_alloc: Fix has_unmovable_pages for HugePages

[Andrew Morton]

On Tue, 18 Dec 2018 08:36:55 +0100 Michal Hocko <mhocko@xxxxxxxxxx> wrote:

> > > Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
> 
> Acked-by: Michal Hocko <mhocko@xxxxxxxx>

Thanks.

> > cc:stable?
> 
> See http://lkml.kernel.org/r/20181217152936.GR30879@xxxxxxxxxxxxxxx I
> believe nobody is simply using gigantic pages and hotplug at the same
> time and those pages do not seem to cross cma regions as well. At least
> not since hugepage_migration_supported stops reporting giga pages as
> migrateable.
> 
> That being said, I do not think we really need it in stable but it
> should be relatively easy to backport so no objection from me to put it
> there.

OK, done.  Sasha would have grabbed it anyway :(