Re: [PATCH 07/10] mm/hugetlb: Make follow_hugetlb_page() safe to pmd unshare

Mike Kravetz
2022-12-05T22:47:28Z

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>
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Mike Kravetz