Re: [PATCH 1/7] mm/khugepaged: remove unneeded shmem_huge_enabled() check

From: Yang Shi
Date: Wed Jun 15 2022 - 13:36:07 EST


On Sat, Jun 11, 2022 at 1:47 AM Miaohe Lin <linmiaohe@xxxxxxxxxx> wrote:
>
> If we reach here, hugepage_vma_check() has already made sure that hugepage
> is enabled for shmem. Remove this duplicated check.
>
> Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>

Reviewed-by: Yang Shi <shy828301@xxxxxxxxx>

> ---
> mm/khugepaged.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/mm/khugepaged.c b/mm/khugepaged.c
> index 476d79360101..73570dfffcec 100644
> --- a/mm/khugepaged.c
> +++ b/mm/khugepaged.c
> @@ -2153,8 +2153,6 @@ static unsigned int khugepaged_scan_mm_slot(unsigned int pages,
> if (khugepaged_scan.address < hstart)
> khugepaged_scan.address = hstart;
> VM_BUG_ON(khugepaged_scan.address & ~HPAGE_PMD_MASK);
> - if (shmem_file(vma->vm_file) && !shmem_huge_enabled(vma))
> - goto skip;
>
> while (khugepaged_scan.address < hend) {
> int ret;
> --
> 2.23.0
>
>