On Wed, Aug 19, 2015 at 10:05:40AM -0400, Jeff Layton wrote:
> If the list_head is empty then we'll have called list_lru_from_kmem
> for nothing. Move that call inside of the list_empty if block.
>
> Cc: Vladimir Davydov <vdavy...@parallels.com>
> Signed-off-by: Jeff Layton <jeff.lay...@primarydata.com>
Reviewed-by: Vladimir Davydov <vdavy...@parallels.com>
> ---
> mm/list_lru.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/mm/list_lru.c b/mm/list_lru.c
> index 909eca2c820e..e1da19fac1b3 100644
> --- a/mm/list_lru.c
> +++ b/mm/list_lru.c
> @@ -99,8 +99,8 @@ bool list_lru_add(struct list_lru *lru, struct list_head
> *item)
> struct list_lru_one *l;
>
> spin_lock(&nlru->lock);
> - l = list_lru_from_kmem(nlru, item);
> if (list_empty(item)) {
> + l = list_lru_from_kmem(nlru, item);
> list_add_tail(item, &l->list);
> l->nr_items++;
> spin_unlock(&nlru->lock);
> @@ -118,8 +118,8 @@ bool list_lru_del(struct list_lru *lru, struct list_head
> *item)
> struct list_lru_one *l;
>
> spin_lock(&nlru->lock);
> - l = list_lru_from_kmem(nlru, item);
> if (!list_empty(item)) {
> + l = list_lru_from_kmem(nlru, item);
> list_del_init(item);
> l->nr_items--;
> spin_unlock(&nlru->lock);
--
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