Re: [PATCH] mm: remove unused clear_flush_young_ptes_notify()

["Lorenzo Stoakes (ARM)" <ljs@kernel.org>]

On Mon, Nov 09, 2026 at 06:41:55PM +0000, Shivank Garg wrote:
> clear_flush_young_ptes_notify()'s last user was removed in
> commit f3c493d2f42b ("mm/rmap: handle device-exclusive entries in
> folio_referenced_one()"), which open-codes clear_flush_young_ptes()
> and mmu_notifier_clear_flush_young() in folio_referenced_one().
>
> Remove both the CONFIG_MMU_NOTIFIER definition and the
> !CONFIG_MMU_NOTIFIER alias.
>
> Signed-off-by: Shivank Garg <shivankg@amd.com>

LGTM

Reviewed-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>

> ---
> Applies cleanly on mm/core.git/for-next.
> ---
>  mm/internal.h | 12 ------------
>  1 file changed, 12 deletions(-)
>
> diff --git a/mm/internal.h b/mm/internal.h
> index b129510b92e2..b1f3a1a59bc0 100644
> --- a/mm/internal.h
> +++ b/mm/internal.h
> @@ -1598,17 +1598,6 @@ static inline void maybe_rmap_unlock_action(struct vm_area_struct *vma,
>  }
>
>  #ifdef CONFIG_MMU_NOTIFIER
> -static inline bool clear_flush_young_ptes_notify(struct vm_area_struct *vma,
> -		unsigned long addr, pte_t *ptep, unsigned int nr)
> -{
> -	bool young;
> -
> -	young = clear_flush_young_ptes(vma, addr, ptep, nr);
> -	young |= mmu_notifier_clear_flush_young(vma->vm_mm, addr,
> -						addr + nr * PAGE_SIZE);
> -	return young;
> -}
> -
>  static inline bool pmdp_clear_flush_young_notify(struct vm_area_struct *vma,
>  		unsigned long addr, pmd_t *pmdp)
>  {
> @@ -1641,7 +1630,6 @@ static inline bool pmdp_test_and_clear_young_notify(struct vm_area_struct *vma,
>
>  #else /* CONFIG_MMU_NOTIFIER */
>
> -#define clear_flush_young_ptes_notify	clear_flush_young_ptes
>  #define pmdp_clear_flush_young_notify	pmdp_clear_flush_young
>  #define test_and_clear_young_ptes_notify	test_and_clear_young_ptes
>  #define pmdp_test_and_clear_young_notify	pmdp_test_and_clear_young
>
> ---
> base-commit: 2683df3b7eac1d91380194955ad0c9751454610c
> change-id: 20261109-clear-flush-young-notify-dac8b5496ec4
>
> Best regards,
> --
> Shivank Garg <shivankg@amd.com>
>

--
Cheers, Lorenzo