linux-kernel - Re: [PATCH mm-unstable 1/4] mm: multi-gen LRU: use macro for bitmap

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Message-ID: <CAJj2-QGuYP68ZVfb1PAHmCnS8H+Bzkvpz3c7G9An4=FL-=JApg@mail.gmail.com>
Date:   Thu, 1 Jun 2023 16:01:16 +0800
From:   Yuanchu Xie <yuanchu@...gle.com>
To:     "T.J. Alumbaugh" <talumbau@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Yu Zhao <yuzhao@...gle.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, linux-mm@...gle.com
Subject: Re: [PATCH mm-unstable 1/4] mm: multi-gen LRU: use macro for bitmap

Reviewed-by: Yuanchu Xie <yuanchu@...gle.com>

On Mon, May 22, 2023 at 7:21 PM T.J. Alumbaugh <talumbau@...gle.com> wrote:
>
> Use DECLARE_BITMAP macro when possible.
>
> Signed-off-by: T.J. Alumbaugh <talumbau@...gle.com>
> ---
>  mm/vmscan.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index 4637f6462e9c..cf18873a36b9 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -4144,7 +4144,7 @@ static void walk_pmd_range(pud_t *pud, unsigned long start, unsigned long end,
>         unsigned long next;
>         unsigned long addr;
>         struct vm_area_struct *vma;
> -       unsigned long bitmap[BITS_TO_LONGS(MIN_LRU_BATCH)];
> +       DECLARE_BITMAP(bitmap, MIN_LRU_BATCH);
>         unsigned long first = -1;
>         struct lru_gen_mm_walk *walk = args->private;
>
> --
> 2.40.1.698.g37aff9b760-goog
>