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mm/slab: use list_move instead of list_del/list_add 

Using list_move() instead of list_del() + list_add() to avoid needlessly
poisoning the next and prev values.

Link: http://lkml.kernel.org/r/1468929772-9174-1-git-send-email-weiyj_lk@163.com
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Wei Yongjun 2016-07-26 15:22:11 -07:00 committed by Linus Torvalds
parent 91c6a05f72
commit de24baecd7
1 changed files with 1 additions and 2 deletions
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3
mm/slab.c
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@ -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);
}
}