From: Vitaly Wool <vitaly.wool@konsulko.com>
To: Miaohe Lin <linmiaohe@huawei.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 7/9] mm/z3fold: remove redundant list_del_init of zhdr->buddy in z3fold_free
Date: Wed, 2 Mar 2022 09:38:18 +0100 [thread overview]
Message-ID: <CAM4kBBJ79OQDbetD20rLNRESE0ncYix5RMeuHvPSLHxyxxB3Dg@mail.gmail.com> (raw)
In-Reply-To: <20220219092533.12596-8-linmiaohe@huawei.com>
On Sat, Feb 19, 2022 at 10:26 AM Miaohe Lin <linmiaohe@huawei.com> wrote:
>
> The do_compact_page will do list_del_init(&zhdr->buddy) for us. Remove this
> extra one to save some possible cpu cycles.
>
> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Vitaly Wool <vitaly.wool@konsulko.com>
> ---
> mm/z3fold.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/mm/z3fold.c b/mm/z3fold.c
> index 18a697f6fe32..867c590df027 100644
> --- a/mm/z3fold.c
> +++ b/mm/z3fold.c
> @@ -1244,9 +1244,6 @@ static void z3fold_free(struct z3fold_pool *pool, unsigned long handle)
> return;
> }
> if (zhdr->cpu < 0 || !cpu_online(zhdr->cpu)) {
> - spin_lock(&pool->lock);
> - list_del_init(&zhdr->buddy);
> - spin_unlock(&pool->lock);
> zhdr->cpu = -1;
> kref_get(&zhdr->refcount);
> clear_bit(PAGE_CLAIMED, &page->private);
> --
> 2.23.0
>
next prev parent reply other threads:[~2022-03-02 8:38 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-19 9:25 [PATCH 0/9] A few cleanup patches for z3fold Miaohe Lin
2022-02-19 9:25 ` [PATCH 1/9] mm/z3fold: declare z3fold_mount with __init Miaohe Lin
2022-03-02 8:17 ` Vitaly Wool
2022-02-19 9:25 ` [PATCH 2/9] mm/z3fold: remove obsolete comment in z3fold_alloc Miaohe Lin
2022-03-02 8:18 ` Vitaly Wool
2022-02-19 9:25 ` [PATCH 3/9] mm/z3fold: minor clean up for z3fold_free Miaohe Lin
2022-03-02 8:21 ` Vitaly Wool
2022-02-19 9:25 ` [PATCH 4/9] mm/z3fold: remove unneeded page_mapcount_reset and ClearPagePrivate Miaohe Lin
2022-03-02 8:22 ` Vitaly Wool
2022-02-19 9:25 ` [PATCH 5/9] mm/z3fold: remove confusing local variable l reassignment Miaohe Lin
2022-03-02 8:24 ` Vitaly Wool
2022-02-19 9:25 ` [PATCH 6/9] mm/z3fold: move decrement of pool->pages_nr into __release_z3fold_page() Miaohe Lin
2022-02-19 16:33 ` David Laight
2022-02-21 2:53 ` Miaohe Lin
2022-02-21 5:17 ` David Laight
2022-02-21 11:37 ` Miaohe Lin
2022-03-02 8:31 ` Vitaly Wool
2022-03-02 9:12 ` David Laight
2022-03-02 10:19 ` Vitaly Wool
2022-03-03 2:27 ` Miaohe Lin
2022-02-19 9:25 ` [PATCH 7/9] mm/z3fold: remove redundant list_del_init of zhdr->buddy in z3fold_free Miaohe Lin
2022-03-02 8:38 ` Vitaly Wool [this message]
2022-02-19 9:25 ` [PATCH 8/9] mm/z3fold: remove unneeded PAGE_HEADLESS check in free_handle() Miaohe Lin
2022-02-19 9:25 ` [PATCH 9/9] mm/z3fold: remove unneeded return value of z3fold_compact_page() Miaohe Lin
2022-02-19 20:37 ` Souptick Joarder
2022-03-02 8:40 ` Vitaly Wool
2022-03-02 8:56 ` Miaohe Lin
2022-03-01 13:03 ` [PATCH 0/9] A few cleanup patches for z3fold Miaohe Lin
2022-03-01 17:36 ` Andrew Morton
2022-03-02 1:54 ` Miaohe Lin
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