linux-kernel - Re: [PATCH 3/6] hugetlb_cgroup: hugetlbfs: use helper macro SZ

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Date:   Thu, 28 Jul 2022 10:48:41 -0700
From:   Mina Almasry <almasrymina@...gle.com>
To:     Miaohe Lin <linmiaohe@...wei.com>
Cc:     akpm@...ux-foundation.org, mike.kravetz@...cle.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/6] hugetlb_cgroup: hugetlbfs: use helper macro SZ_1{K,M,G}

On Thu, Jul 28, 2022 at 5:20 AM Miaohe Lin <linmiaohe@...wei.com> wrote:
>
> Use helper macro SZ_1K, SZ_1M and SZ_1G to do the size conversion. Minor
> readability improvement.
>
> Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>

Thanks Miaohe,

Reviewed-by: Mina Almasry <almasrymina@...gle.com>

> ---
>  mm/hugetlb_cgroup.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c
> index 99e9a367e1e5..7e0bca52c40f 100644
> --- a/mm/hugetlb_cgroup.c
> +++ b/mm/hugetlb_cgroup.c
> @@ -674,12 +674,12 @@ static ssize_t hugetlb_cgroup_reset(struct kernfs_open_file *of,
>
>  static char *mem_fmt(char *buf, int size, unsigned long hsize)
>  {
> -       if (hsize >= (1UL << 30))
> -               snprintf(buf, size, "%luGB", hsize >> 30);
> -       else if (hsize >= (1UL << 20))
> -               snprintf(buf, size, "%luMB", hsize >> 20);
> +       if (hsize >= SZ_1G)
> +               snprintf(buf, size, "%luGB", hsize / SZ_1G);
> +       else if (hsize >= SZ_1M)
> +               snprintf(buf, size, "%luMB", hsize / SZ_1M);
>         else
> -               snprintf(buf, size, "%luKB", hsize >> 10);
> +               snprintf(buf, size, "%luKB", hsize / SZ_1K);
>         return buf;
>  }
>
> --
> 2.23.0
>