On Tue, Aug 20, 2019 at 05:48:24PM +0800, Alex Shi wrote: > +++ b/include/linux/mmzone.h > @@ -295,6 +295,9 @@ struct zone_reclaim_stat { > > struct lruvec { > struct list_head lists[NR_LRU_LISTS]; > + /* move lru_lock to per lruvec for memcg */ > + spinlock_t lru_lock; This comment makes no sense outside the context of this patch.