diff options
Diffstat (limited to 'mm/list_lru.c')
| -rw-r--r-- | mm/list_lru.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/list_lru.c b/mm/list_lru.c index ba76428ceece..c669d87001a6 100644 --- a/mm/list_lru.c +++ b/mm/list_lru.c @@ -395,6 +395,12 @@ static void memcg_reparent_list_lru_node(struct list_lru *lru, int nid, struct list_lru_one *src, *dst; /* + * If there is no lru entry in this nlru, we can skip it immediately. + */ + if (!READ_ONCE(nlru->nr_items)) + return; + + /* * Since list_lru_{add,del} may be called under an IRQ-safe lock, * we have to use IRQ-safe primitives here to avoid deadlock. */ |