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Date:   Tue, 18 Dec 2018 13:46:44 -0800
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Michal Hocko <mhocko@kernel.org>
Cc:     Oscar Salvador <osalvador@suse.de>, vbabka@suse.cz,
        pavel.tatashin@microsoft.com, rppt@linux.vnet.ibm.com,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] mm, page_alloc: Fix has_unmovable_pages for
 HugePages
Message-Id: <20181218134644.6770936603f7640f415918a7@linux-foundation.org>
In-Reply-To: <20181218073655.GB30879@dhcp22.suse.cz>
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        <20181217150726.6eea4942005516d565dae488@linux-foundation.org>
        <20181218073655.GB30879@dhcp22.suse.cz>
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On Tue, 18 Dec 2018 08:36:55 +0100 Michal Hocko <mhocko@kernel.org> wrote:

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