linux-kernel - Re: [PATCH 3/9] mm/z3fold: minor clean up for z3fold

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Message-ID: <CAM4kBBL3ZDTnB4bWLRZSow1jaAeVwuJx4rbnzsVdy06p1Fnf-A@mail.gmail.com>
Date:   Wed, 2 Mar 2022 09:21:26 +0100
From:   Vitaly Wool <vitaly.wool@...sulko.com>
To:     Miaohe Lin <linmiaohe@...wei.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Linux-MM <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/9] mm/z3fold: minor clean up for z3fold_free

On Sat, Feb 19, 2022 at 10:26 AM Miaohe Lin <linmiaohe@...wei.com> wrote:
>
> Use put_z3fold_header() to pair with get_z3fold_header. Also fix the wrong
> comments. Minor readability improvement.
>
> Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>

Reviewed-by: Vitaly Wool <vitaly.wool@...sulko.com>
> ---
>  mm/z3fold.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/mm/z3fold.c b/mm/z3fold.c
> index 87689f50f709..eb89271aea83 100644
> --- a/mm/z3fold.c
> +++ b/mm/z3fold.c
> @@ -1187,9 +1187,9 @@ static int z3fold_alloc(struct z3fold_pool *pool, size_t size, gfp_t gfp,
>   * @handle:    handle associated with the allocation returned by z3fold_alloc()
>   *
>   * In the case that the z3fold page in which the allocation resides is under
> - * reclaim, as indicated by the PG_reclaim flag being set, this function
> - * only sets the first|last_chunks to 0.  The page is actually freed
> - * once both buddies are evicted (see z3fold_reclaim_page() below).
> + * reclaim, as indicated by the PAGE_CLAIMED flag being set, this function
> + * only sets the first|middle|last_chunks to 0.  The page is actually freed
> + * once all buddies are evicted (see z3fold_reclaim_page() below).
>   */
>  static void z3fold_free(struct z3fold_pool *pool, unsigned long handle)
>  {
> @@ -1247,7 +1247,7 @@ static void z3fold_free(struct z3fold_pool *pool, unsigned long handle)
>         }
>         if (page_claimed) {
>                 /* the page has not been claimed by us */
> -               z3fold_page_unlock(zhdr);
> +               put_z3fold_header(zhdr);
>                 return;
>         }
>         if (test_and_set_bit(NEEDS_COMPACTING, &page->private)) {
> --
> 2.23.0
>