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authorWei Yongjun <yongjun_wei@trendmicro.com.cn>2016-07-27 00:22:11 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 01:19:19 +0200
commitde24baecd7628aa19e8b53530bb33f8ffbaf5220 (patch)
tree2f5bc8f8243b300de9fd269f2a49c0442684f734 /mm/slab.c
parentmm: faster kmalloc_array(), kcalloc() (diff)
downloadlinux-de24baecd7628aa19e8b53530bb33f8ffbaf5220.tar.xz
linux-de24baecd7628aa19e8b53530bb33f8ffbaf5220.zip
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>
Diffstat (limited to '')
-rw-r--r--mm/slab.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/slab.c b/mm/slab.c
index fc9496bdd038..09771ed3e693 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);
}
}