linux-kernel - Re: [PATCH v2] hugetlb: freeze allocated pages before creating hugetlb pages

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Message-ID: <YyqK51L65yS4OKye@localhost.localdomain>
Date:   Wed, 21 Sep 2022 05:54:15 +0200
From:   Oscar Salvador <osalvador@...e.de>
To:     Mike Kravetz <mike.kravetz@...cle.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Muchun Song <songmuchun@...edance.com>,
        Joao Martins <joao.m.martins@...cle.com>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...e.com>, Peter Xu <peterx@...hat.com>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Vlastimil Babka <vbabka@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2] hugetlb: freeze allocated pages before creating
 hugetlb pages

On Tue, Sep 20, 2022 at 10:10:29AM -0700, Mike Kravetz wrote:
> Hi Oscar, thanks for taking a look.
> 
> I think you may have missed something in the above comment.  For gigantic
> pages, we only freeze pages if NOT demote.  In the demote case, pages are
> already frozen.

Yeah.
It got me confused that the link you posted
(https://lore.kernel.org/linux-mm/20210622021423.154662-3-mike.kravetz@oracle.com/)
seemed like an earlier version of what it got into upstream,
and in there there was "demotion" handling.

Having checked the tree it all looks sound.

I will wait for v3.

Thanks Mike!


-- 
Oscar Salvador
SUSE Labs