linux/mm/vmscan.c

4345 	spin_lock_irqsave(&pgdat->memcg_lru.lock, flags);
4358 		new = get_memcg_gen(pgdat->memcg_lru.seq);
4360 		new = get_memcg_gen(pgdat->memcg_lru.seq + 1);
4370 		hlist_nulls_add_head_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[new][bin]);
4372 		hlist_nulls_add_tail_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[new][bin]);
4374 	pgdat->memcg_lru.nr_memcgs[old]--;
4375 	pgdat->memcg_lru.nr_memcgs[new]++;
4377 	if (!pgdat->memcg_lru.nr_memcgs[old] && old == get_memcg_gen(pgdat->memcg_lru.seq))
4378 		WRITE_ONCE(pgdat->memcg_lru.seq, pgdat->memcg_lru.seq + 1);
4380 	spin_unlock_irqrestore(&pgdat->memcg_lru.lock, flags);
4395 		spin_lock_irq(&pgdat->memcg_lru.lock);
4399 		gen = get_memcg_gen(pgdat->memcg_lru.seq);
4403 		hlist_nulls_add_tail_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[gen][bin]);
4404 		pgdat->memcg_lru.nr_memcgs[gen]++;
4406 		spin_unlock_irq(&pgdat->memcg_lru.lock);
4430 		spin_lock_irq(&pgdat->memcg_lru.lock);
4438 		pgdat->memcg_lru.nr_memcgs[gen]--;
4440 		if (!pgdat->memcg_lru.nr_memcgs[gen] && gen == get_memcg_gen(pgdat->memcg_lru.seq))
4441 			WRITE_ONCE(pgdat->memcg_lru.seq, pgdat->memcg_lru.seq + 1);
4443 		spin_unlock_irq(&pgdat->memcg_lru.lock);
4984 	gen = get_memcg_gen(READ_ONCE(pgdat->memcg_lru.seq));
4992 	hlist_nulls_for_each_entry_rcu(lrugen, pos, &pgdat->memcg_lru.fifo[gen][bin], list) {
5697 	spin_lock_init(&pgdat->memcg_lru.lock);
5701 			INIT_HLIST_NULLS_HEAD(&pgdat->memcg_lru.fifo[i][j], i);