linux-kernel - Re: [PATCH 06/10] mm/hugetlb: Make hugetlb_follow_page

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Message-ID: <e55915c8-5360-229a-610c-5332f00e7d7c@redhat.com>
Date:   Wed, 30 Nov 2022 17:09:15 +0100
From:   David Hildenbrand <david@...hat.com>
To:     Peter Xu <peterx@...hat.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     James Houghton <jthoughton@...gle.com>,
        Jann Horn <jannh@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Rik van Riel <riel@...riel.com>,
        Nadav Amit <nadav.amit@...il.com>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Muchun Song <songmuchun@...edance.com>,
        Mike Kravetz <mike.kravetz@...cle.com>
Subject: Re: [PATCH 06/10] mm/hugetlb: Make hugetlb_follow_page_mask() safe to
 pmd unshare

On 29.11.22 20:35, Peter Xu wrote:
> Since hugetlb_follow_page_mask() walks the pgtable, it needs the vma lock
> to make sure the pgtable page will not be freed concurrently.
> 
> Signed-off-by: Peter Xu <peterx@...hat.com>
> ---

Acked-by: David Hildenbrand <david@...hat.com>

-- 
Thanks,

David / dhildenb