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| author | Jeff Layton <jlayton@poochiereds.net> | 2015-09-08 15:03:44 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-08 15:35:28 -0700 |
| commit | 26f5d7609f03ad8d6dc552458e4e371a62416b37 (patch) | |
| tree | 33868d7b635a40367d0848dc4b049a8485d1572d | |
| parent | 21cd3a604797c2774676926a95a3d17d4cd5cbb3 (diff) | |
| download | linux-26f5d7609f03ad8d6dc552458e4e371a62416b37.tar.gz linux-26f5d7609f03ad8d6dc552458e4e371a62416b37.tar.bz2 linux-26f5d7609f03ad8d6dc552458e4e371a62416b37.zip | |
list_lru: don't call list_lru_from_kmem if the list_head is empty
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.
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/list_lru.c | 4 |
1 files 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); |