Re: [PATCH v2 2/2] mm:vmscan: the ref clean dirty folio skip unmap

[Matthew Wilcox]

On Thu, Oct 19, 2023 at 09:42:11PM +0800, Zhiguo Jiang wrote:
> +++ b/mm/vmscan.c
> @@ -1225,7 +1225,10 @@ static unsigned int shrink_folio_list(struct list_head *folio_list,
>  			stat->nr_ref_keep += nr_pages;
>  			goto keep_locked;
>  		case FOLIOREF_RECLAIM:
> +			break;
>  		case FOLIOREF_RECLAIM_CLEAN:
> +			if (dirty)
> +				goto activate_locked;

Why activate_locked and not keep_locked?