linux-kernel - [PATCH -next] mm/slab: use list_move instead of list_del/list

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Date:	Tue, 19 Jul 2016 12:02:52 +0000
From:	Wei Yongjun <weiyj_lk@....com>
To:	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH -next] mm/slab: use list_move instead of list_del/list_add

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

Using list_move() instead of list_del() + list_add().

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 mm/slab.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/slab.c b/mm/slab.c
index 32c2296..cc6d816 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3452,8 +3452,7 @@ static void free_block(struct kmem_cache *cachep, void **objpp,
 		n->free_objects -= cachep->num;
 
 		page = list_last_entry(&n->slabs_free, struct page, lru);
-		list_del(&page->lru);
-		list_add(&page->lru, list);
+		list_move(&page->lru, list);
 	}
 }