On 18 Jun 2025, at 13:40, David Hildenbrand wrote: > Now that PAGE_MAPPING_MOVABLE is gone, we can simplify and rely on the > folio_test_anon() test only. > > ... but staring at the users, this function should never even have been > called on movable_ops pages. E.g., > * __buffer_migrate_folio() does not make sense for them > * folio_migrate_mapping() does not make sense for them > * migrate_huge_page_move_mapping() does not make sense for them > * __migrate_folio() does not make sense for them > * ... and khugepaged should never stumble over them > > Let's simply refuse typed pages (which includes slab) except hugetlb, > and WARN. > > Signed-off-by: David Hildenbrand <david@xxxxxxxxxx> > --- > include/linux/mm.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > Reviewed-by: Zi Yan <ziy@xxxxxxxxxx> -- Best Regards, Yan, Zi
