Messages in this thread | | | From | Vitaly Wool <> | Date | Wed, 2 Mar 2022 09:38:18 +0100 | Subject | Re: [PATCH 7/9] mm/z3fold: remove redundant list_del_init of zhdr->buddy in z3fold_free |
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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 >
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