164 static inline bool lru_gen_is_active(struct lruvec *lruvec, int gen)  in lru_gen_is_active()  argument
168 	VM_WARN_ON_ONCE(gen >= MAX_NR_GENS);  in lru_gen_is_active()
171 	return gen == lru_gen_from_seq(max_seq) || gen == lru_gen_from_seq(max_seq - 1);  in lru_gen_is_active()
224 	int gen = folio_lru_gen(folio);  in lru_gen_add_folio()  local
229 	VM_WARN_ON_ONCE_FOLIO(gen != -1, folio);  in lru_gen_add_folio()
251 	gen = lru_gen_from_seq(seq);  in lru_gen_add_folio()
252 	flags = (gen + 1UL) << LRU_GEN_PGOFF;  in lru_gen_add_folio()
256 	lru_gen_update_size(lruvec, folio, -1, gen);  in lru_gen_add_folio()
259 		list_add_tail(&folio->lru, &lrugen->folios[gen][type][zone]);  in lru_gen_add_folio()
261 		list_add(&folio->lru, &lrugen->folios[gen][type][zone]);  in lru_gen_add_folio()
269 	int gen = folio_lru_gen(folio);  in lru_gen_del_folio()  local
271 	if (gen < 0)  in lru_gen_del_folio()
278 	flags = !reclaiming && lru_gen_is_active(lruvec, gen) ? BIT(PG_active) : 0;  in lru_gen_del_folio()
280 	gen = ((flags & LRU_GEN_MASK) >> LRU_GEN_PGOFF) - 1;  in lru_gen_del_folio()
282 	lru_gen_update_size(lruvec, folio, gen, -1);  in lru_gen_del_folio()