Commit 52fb90cc authored by Miaohe Lin's avatar Miaohe Lin Committed by Andrew Morton
Browse files

mm/z3fold: remove redundant list_del_init of zhdr->buddy in z3fold_free 

do_compact_page() will do list_del_init(&zhdr->buddy) for us.  Remove this
extra one to save some possible cpu cycles.

Link: https://lkml.kernel.org/r/20220308134311.59086-8-linmiaohe@huawei.com


Signed-off-by: default avatarMiaohe Lin <linmiaohe@huawei.com>
Reviewed-by: default avatarVitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 5e36c25b

mm/z3fold.c

+0 −3
Original line number Diff line number Diff line
@@ -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);