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    SubjectRe: [PATCH 07/10] mm/hugetlb: Make follow_hugetlb_page() safe to pmd unshare
    On 11/29/22 14:35, Peter Xu wrote:
    > Since follow_hugetlb_page() 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@redhat.com>
    > ---
    > mm/hugetlb.c | 7 +++++++
    > 1 file changed, 7 insertions(+)

    Thanks! The flow of that routine is difficult to follow.

    Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
    --
    Mike Kravetz

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