linux-kernel - Re: [PATCH v4] hugetlb: simplify hugetlb handling in follow_page

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Message-ID: <Y1xkonJ2DkQQbAaT@x1n>
Date:   Fri, 28 Oct 2022 19:24:18 -0400
From:   Peter Xu <peterx@...hat.com>
To:     Mike Kravetz <mike.kravetz@...cle.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-ia64@...r.kernel.org,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        David Hildenbrand <david@...hat.com>,
        "Aneesh Kumar K . V" <aneesh.kumar@...ux.ibm.com>,
        Naoya Horiguchi <naoya.horiguchi@...ux.dev>,
        Michael Ellerman <mpe@...erman.id.au>,
        Muchun Song <songmuchun@...edance.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v4] hugetlb: simplify hugetlb handling in follow_page_mask

On Fri, Oct 28, 2022 at 11:11:08AM -0700, Mike Kravetz wrote:
> v4 -    Remove vma (pmd sharing) locking as this can be called with
> 	FOLL_NOWAIT. Peter

Thanks, Mike.  For the gup safety on pmd unshare, I'll prepare a few small
patches and post hopefully early next week (will be off-work on Mon & Tue,
but maybe I'll still try).

-- 
Peter Xu