[PATCH -next] mm/slab: use list_move instead of list_del/list_add

[Wei Yongjun]

From: Wei Yongjun <yongjun_...@trendmicro.com.cn>

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

Signed-off-by: Wei Yongjun <yongjun_...@trendmicro.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);
        }
 }