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Message-ID: <Y45w13WvB9K/G9qn@monkey>
Date: Mon, 5 Dec 2022 14:29:43 -0800
From: Mike Kravetz <mike.kravetz@...cle.com>
To: Peter Xu <peterx@...hat.com>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
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>,
David Hildenbrand <david@...hat.com>
Subject: Re: [PATCH 06/10] mm/hugetlb: Make hugetlb_follow_page_mask() safe
to pmd unshare
On 11/29/22 14:35, 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>
> ---
> mm/hugetlb.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
Thanks!
Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>
--
Mike Kravetz
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