On Mon, Jun 20, 2022 at 10:34:42AM +0800, Baolin Wang wrote: > The huge_ptep_set_access_flags() can not make the huge pte old according > to the discussion [1], that means we will always mornitor the young state > of the hugetlb though we stopped accessing the hugetlb, as a result DAMON > will get inaccurate accessing statistics. > > So changing to use set_huge_pte_at() to make the huge pte old to fix this > issue. > > [1] https://lore.kernel.org/all/Yqy97gXI4Nqb7dYo@xxxxxxx/ > > Fixes: 49f4203aae06 ("mm/damon: add access checking for hugetlb pages") > Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx> The changes make sense to me. Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
