[PATCH v4 3/4] mm: Support batched unmap for lazyfree large folios during reclamation

[Barry Song]

On Thu, Jun 26, 2025 at 9:29 PM Lance Yang <ioworker0 at gmail.com> wrote:
>
[...]
> +
> +               /*
> +                * If we are sure that we batched the entire folio and cleared
> +                * all PTEs, we can just optimize and stop right here.
> +                */
> +               if (nr_pages == folio_nr_pages(folio))

David also mentioned if (nr_pages > 1 && nr_pages == folio_nr_pages(folio)).
I assume it’s still fine when nr_pages == 1 for small folios? No?

>                         goto walk_done;
>                 continue;
>  walk_abort:
> --
>

Thanks,
Lance