> On Sep 4, 2024, at 16:40, Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> wrote: > > In walk_pte_range(), we may modify the pte entry after holding the ptl, so > convert it to using pte_offset_map_rw_nolock(). At this time, the > pte_same() check is not performed after the ptl held, so we should get > pmdval and do pmd_same() check to ensure the stability of pmd entry. > > Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> Reviewed-by: Muchun Song <muchun.song@xxxxxxxxx> Thanks.
