Re: [PATCH 6/7] mm/khugepaged: remove unneeded return value of khugepaged_add_pte_mapped_thp()

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On Sat, Jun 11, 2022 at 1:47 AM Miaohe Lin <linmiaohe@xxxxxxxxxx> wrote:
>
> The return value of khugepaged_add_pte_mapped_thp() is always 0 and also
> ignored. Remove it to clean up the code.
>
> Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>

Reviewed-by: Yang Shi <shy828301@xxxxxxxxx>

> ---
>  mm/khugepaged.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/mm/khugepaged.c b/mm/khugepaged.c
> index 142e26e4bdbf..ee0a719c8be9 100644
> --- a/mm/khugepaged.c
> +++ b/mm/khugepaged.c
> @@ -1372,7 +1372,7 @@ static void collect_mm_slot(struct mm_slot *mm_slot)
>   * Notify khugepaged that given addr of the mm is pte-mapped THP. Then
>   * khugepaged should try to collapse the page table.
>   */
> -static int khugepaged_add_pte_mapped_thp(struct mm_struct *mm,
> +static void khugepaged_add_pte_mapped_thp(struct mm_struct *mm,
>                                          unsigned long addr)
>  {
>         struct mm_slot *mm_slot;
> @@ -1384,7 +1384,6 @@ static int khugepaged_add_pte_mapped_thp(struct mm_struct *mm,
>         if (likely(mm_slot && mm_slot->nr_pte_mapped_thp < MAX_PTE_MAPPED_THP))
>                 mm_slot->pte_mapped_thp[mm_slot->nr_pte_mapped_thp++] = addr;
>         spin_unlock(&khugepaged_mm_lock);
> -       return 0;
>  }
>
>  static void collapse_and_free_pmd(struct mm_struct *mm, struct vm_area_struct *vma,
> --
> 2.23.0
>
>




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