Re: [PATCH] mm: Remove redundant condition for THP folio

David Hildenbrand
2024-10-18T10:50:31Z

On 18.10.24 11:41, Dev Jain wrote:
> folio_test_pmd_mappable() implies folio_test_large(), therefore,
> simplify the expression for is_thp.
>
> Signed-off-by: Dev Jain <dev.jain@arm.com>
> ---
> mm/migrate.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/migrate.c b/mm/migrate.c
> index df91248755e4..b43e7b105559 100644
> --- a/mm/migrate.c
> +++ b/mm/migrate.c
> @@ -1731,7 +1731,7 @@ static int migrate_pages_batch(struct list_head *from,
>
> list_for_each_entry_safe(folio, folio2, from, lru) {
> is_large = folio_test_large(folio);
> - is_thp = is_large && folio_test_pmd_mappable(folio);
> + is_thp = folio_test_pmd_mappable(folio);
> nr_pages = folio_nr_pages(folio);
>
> cond_resched();

Acked-by: David Hildenbrand <david@redhat.com>

--
Cheers,

David / dhildenb