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()
223 	int gen;  in lru_gen_folio_seq()  local
240 		gen = MIN_NR_GENS - folio_test_workingset(folio);  in lru_gen_folio_seq()
242 		gen = MAX_NR_GENS;  in lru_gen_folio_seq()
246 		gen = MIN_NR_GENS;  in lru_gen_folio_seq()
248 		gen = MAX_NR_GENS - folio_test_workingset(folio);  in lru_gen_folio_seq()
250 	return max(READ_ONCE(lrugen->max_seq) - gen + 1, READ_ONCE(lrugen->min_seq[type]));  in lru_gen_folio_seq()
257 	int gen = folio_lru_gen(folio);  in lru_gen_add_folio()  local
262 	VM_WARN_ON_ONCE_FOLIO(gen != -1, folio);  in lru_gen_add_folio()
268 	gen = lru_gen_from_seq(seq);  in lru_gen_add_folio()
269 	flags = (gen + 1UL) << LRU_GEN_PGOFF;  in lru_gen_add_folio()
273 	lru_gen_update_size(lruvec, folio, -1, gen);  in lru_gen_add_folio()
276 		list_add_tail(&folio->lru, &lrugen->folios[gen][type][zone]);  in lru_gen_add_folio()
278 		list_add(&folio->lru, &lrugen->folios[gen][type][zone]);  in lru_gen_add_folio()
286 	int gen = folio_lru_gen(folio);  in lru_gen_del_folio()  local
288 	if (gen < 0)  in lru_gen_del_folio()
295 	flags = !reclaiming && lru_gen_is_active(lruvec, gen) ? BIT(PG_active) : 0;  in lru_gen_del_folio()
297 	gen = ((flags & LRU_GEN_MASK) >> LRU_GEN_PGOFF) - 1;  in lru_gen_del_folio()
299 	lru_gen_update_size(lruvec, folio, gen, -1);  in lru_gen_del_folio()