diff options
Diffstat (limited to 'mm/list_lru.c')
-rw-r--r-- | mm/list_lru.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/mm/list_lru.c b/mm/list_lru.c index a6031f1c5bd7..9a1f7df1afc9 100644 --- a/mm/list_lru.c +++ b/mm/list_lru.c @@ -398,18 +398,7 @@ static int memcg_update_list_lru_node(struct list_lru_node *nlru, } memcpy(&new->lru, &old->lru, flex_array_size(new, lru, old_size)); - - /* - * The locking below allows readers that hold nlru->lock avoid taking - * rcu_read_lock (see list_lru_from_memcg_idx). - * - * Since list_lru_{add,del} may be called under an IRQ-safe lock, - * we have to use IRQ-safe primitives here to avoid deadlock. - */ - spin_lock_irq(&nlru->lock); rcu_assign_pointer(nlru->memcg_lrus, new); - spin_unlock_irq(&nlru->lock); - kvfree_rcu(old, rcu); return 0; } |