On Thu, May 20, 2021 at 01:56:54PM +0530, Aneesh Kumar K.V wrote: > > This seems to work at least for my userfaultfd test on shmem, however I don't > > fully understand the commit message [1] on: How do we guarantee we're not > > moving a thp pte? > > > > move_page_tables() checks for pmd_trans_huge() and ends up calling > move_huge_pmd if it is a THP entry. Sorry to be unclear: what if a huge pud thp? -- Peter Xu