linux-kernel - Re: [PATCH 14/15] mm/swap: fix the comment of get_kernel

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Date:   Thu, 12 May 2022 15:45:19 +0200
From:   David Hildenbrand <david@...hat.com>
To:     Miaohe Lin <linmiaohe@...wei.com>, akpm@...ux-foundation.org
Cc:     willy@...radead.org, vbabka@...e.cz, dhowells@...hat.com,
        neilb@...e.de, apopple@...dia.com, surenb@...gle.com,
        peterx@...hat.com, naoya.horiguchi@....com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 14/15] mm/swap: fix the comment of get_kernel_pages

On 09.05.22 15:14, Miaohe Lin wrote:
> If no pages were pinned, 0 is returned in fact. Fix the corresponding
> comment.
> 
> Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
> ---
>  mm/swap.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/mm/swap.c b/mm/swap.c
> index 6d2c37f781f8..236b37663a1a 100644
> --- a/mm/swap.c
> +++ b/mm/swap.c
> @@ -168,8 +168,8 @@ EXPORT_SYMBOL(put_pages_list);
>   *
>   * Returns number of pages pinned. This may be fewer than the number
>   * requested. If nr_pages is 0 or negative, returns 0. If no pages

Ehm, there is only "nr_segs", no "nr_pages" :/ Want to fix that up in
the same patch?

> - * were pinned, returns -errno. Each page returned must be released
> - * with a put_page() call when it is finished with.
> + * were pinned, returns 0. Each page returned must be released with
> + * a put_page() call when it is finished with.
>   */
>  int get_kernel_pages(const struct kvec *kiov, int nr_segs, int write,
>  		struct page **pages)

Apart from that

Reviewed-by: David Hildenbrand <david@...hat.com>

-- 
Thanks,

David / dhildenb