linux-kernel - Re: [PATCH v2] mm, page_alloc: Fix has_unmovable

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Date:   Tue, 18 Dec 2018 13:46:44 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Oscar Salvador <osalvador@...e.de>, vbabka@...e.cz,
        pavel.tatashin@...rosoft.com, rppt@...ux.vnet.ibm.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mm, page_alloc: Fix has_unmovable_pages for
 HugePages

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

> > > Signed-off-by: Oscar Salvador <osalvador@...e.de>
> 
> Acked-by: Michal Hocko <mhocko@...e.com>

Thanks.

> > cc:stable?
> 
> See http://lkml.kernel.org/r/20181217152936.GR30879@dhcp22.suse.cz. 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 :(