Re: [PATCH] mm: huge_memory: add folio_mark_accessed() when zapping file THP

[Oscar Salvador <osalvador@suse.de>]

On Fri, Apr 11, 2025 at 09:07:16AM +0800, Baolin Wang wrote:
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index b3ade7ac5bbf..93abd1fcc4fb 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -2263,6 +2263,10 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct
> vm_area_struct *vma,
>                         add_mm_counter(tlb->mm, mm_counter_file(folio),
>                                        -HPAGE_PMD_NR);
> 
> +                       /*
> +                        * Use flush_needed to indicate whether the PMD
> entry is present,
> +                        * instead of checking pmd_present() again.
> +                        */
>                         if (flush_needed && pmd_young(orig_pmd) &&
>                             likely(vma_has_recency(vma)))
>                                 folio_mark_accessed(folio);
Yes, thanks, looks good to me, and I see that Andrew has already taken
it.


-- 
Oscar Salvador
SUSE Labs