73 static void __page_cache_release(struct folio *folio, struct lruvec **lruvecp,  in __page_cache_release()  argument
76 	if (folio_test_lru(folio)) {  in __page_cache_release()
77 		folio_lruvec_relock_irqsave(folio, lruvecp, flagsp);  in __page_cache_release()
78 		lruvec_del_folio(*lruvecp, folio);  in __page_cache_release()
79 		__folio_clear_lru_flags(folio);  in __page_cache_release()
87 static void page_cache_release(struct folio *folio)  in page_cache_release()  argument
92 	__page_cache_release(folio, &lruvec, &flags);  in page_cache_release()
97 void __folio_put(struct folio *folio)  in __folio_put()  argument
99 	if (unlikely(folio_is_zone_device(folio))) {  in __folio_put()
100 		free_zone_device_folio(folio);  in __folio_put()
104 	if (folio_test_hugetlb(folio)) {  in __folio_put()
105 		free_huge_folio(folio);  in __folio_put()
109 	page_cache_release(folio);  in __folio_put()
110 	folio_unqueue_deferred_split(folio);  in __folio_put()
111 	mem_cgroup_uncharge(folio);  in __folio_put()
112 	free_frozen_pages(&folio->page, folio_order(folio));  in __folio_put()
116 typedef void (*move_fn_t)(struct lruvec *lruvec, struct folio *folio);
118 static void lru_add(struct lruvec *lruvec, struct folio *folio)  in lru_add()  argument
120 	int was_unevictable = folio_test_clear_unevictable(folio);  in lru_add()
121 	long nr_pages = folio_nr_pages(folio);  in lru_add()
123 	VM_BUG_ON_FOLIO(folio_test_lru(folio), folio);  in lru_add()
136 	if (folio_evictable(folio)) {  in lru_add()
140 		folio_clear_active(folio);  in lru_add()
141 		folio_set_unevictable(folio);  in lru_add()
149 		folio->mlock_count = 0;  in lru_add()
154 	lruvec_add_folio(lruvec, folio);  in lru_add()
155 	trace_mm_lru_insertion(folio);  in lru_add()
165 		struct folio *folio = fbatch->folios[i];  in folio_batch_move_lru()  local
168 		if (move_fn != lru_add && !folio_test_clear_lru(folio))  in folio_batch_move_lru()
171 		folio_lruvec_relock_irqsave(folio, &lruvec, &flags);  in folio_batch_move_lru()
172 		move_fn(lruvec, folio);  in folio_batch_move_lru()
174 		folio_set_lru(folio);  in folio_batch_move_lru()
183 		struct folio *folio, move_fn_t move_fn, bool disable_irq)  in __folio_batch_add_and_move()  argument
187 	folio_get(folio);  in __folio_batch_add_and_move()
194 	if (!folio_batch_add(this_cpu_ptr(fbatch), folio) ||  in __folio_batch_add_and_move()
195 			!folio_may_be_lru_cached(folio) || lru_cache_disabled())  in __folio_batch_add_and_move()
204 #define folio_batch_add_and_move(folio, op)		\  argument
207 		folio,					\
213 static void lru_move_tail(struct lruvec *lruvec, struct folio *folio)  in lru_move_tail()  argument
215 	if (folio_test_unevictable(folio))  in lru_move_tail()
218 	lruvec_del_folio(lruvec, folio);  in lru_move_tail()
219 	folio_clear_active(folio);  in lru_move_tail()
220 	lruvec_add_folio_tail(lruvec, folio);  in lru_move_tail()
221 	__count_vm_events(PGROTATED, folio_nr_pages(folio));  in lru_move_tail()
231 void folio_rotate_reclaimable(struct folio *folio)  in folio_rotate_reclaimable()  argument
233 	if (folio_test_locked(folio) || folio_test_dirty(folio) ||  in folio_rotate_reclaimable()
234 	    folio_test_unevictable(folio) || !folio_test_lru(folio))  in folio_rotate_reclaimable()
237 	folio_batch_add_and_move(folio, lru_move_tail);  in folio_rotate_reclaimable()
294 void lru_note_cost_refault(struct folio *folio)  in lru_note_cost_refault()  argument
298 	lruvec = folio_lruvec_lock_irq(folio);  in lru_note_cost_refault()
299 	lru_note_cost_unlock_irq(lruvec, folio_is_file_lru(folio),  in lru_note_cost_refault()
300 				folio_nr_pages(folio), 0);  in lru_note_cost_refault()
303 static void lru_activate(struct lruvec *lruvec, struct folio *folio)  in lru_activate()  argument
305 	long nr_pages = folio_nr_pages(folio);  in lru_activate()
307 	if (folio_test_active(folio) || folio_test_unevictable(folio))  in lru_activate()
311 	lruvec_del_folio(lruvec, folio);  in lru_activate()
312 	folio_set_active(folio);  in lru_activate()
313 	lruvec_add_folio(lruvec, folio);  in lru_activate()
314 	trace_mm_lru_activate(folio);  in lru_activate()
329 void folio_activate(struct folio *folio)  in folio_activate()  argument
331 	if (folio_test_active(folio) || folio_test_unevictable(folio) ||  in folio_activate()
332 	    !folio_test_lru(folio))  in folio_activate()
335 	folio_batch_add_and_move(folio, lru_activate);  in folio_activate()
343 void folio_activate(struct folio *folio)  in folio_activate()  argument
347 	if (!folio_test_clear_lru(folio))  in folio_activate()
350 	lruvec = folio_lruvec_lock_irq(folio);  in folio_activate()
351 	lru_activate(lruvec, folio);  in folio_activate()
353 	folio_set_lru(folio);  in folio_activate()
357 static void __lru_cache_activate_folio(struct folio *folio)  in __lru_cache_activate_folio()  argument
376 		struct folio *batch_folio = fbatch->folios[i];  in __lru_cache_activate_folio()
378 		if (batch_folio == folio) {  in __lru_cache_activate_folio()
379 			folio_set_active(folio);  in __lru_cache_activate_folio()
389 static void lru_gen_inc_refs(struct folio *folio)  in lru_gen_inc_refs()  argument
391 	unsigned long new_flags, old_flags = READ_ONCE(folio->flags.f);  in lru_gen_inc_refs()
393 	if (folio_test_unevictable(folio))  in lru_gen_inc_refs()
397 	if (!folio_test_referenced(folio)) {  in lru_gen_inc_refs()
398 		set_mask_bits(&folio->flags.f, LRU_REFS_MASK, BIT(PG_referenced));  in lru_gen_inc_refs()
404 			if (!folio_test_workingset(folio))  in lru_gen_inc_refs()
405 				folio_set_workingset(folio);  in lru_gen_inc_refs()
410 	} while (!try_cmpxchg(&folio->flags.f, &old_flags, new_flags));  in lru_gen_inc_refs()
413 static bool lru_gen_clear_refs(struct folio *folio)  in lru_gen_clear_refs()  argument
416 	int gen = folio_lru_gen(folio);  in lru_gen_clear_refs()
417 	int type = folio_is_file_lru(folio);  in lru_gen_clear_refs()
422 	set_mask_bits(&folio->flags.f, LRU_REFS_FLAGS | BIT(PG_workingset), 0);  in lru_gen_clear_refs()
424 	lrugen = &folio_lruvec(folio)->lrugen;  in lru_gen_clear_refs()
431 static void lru_gen_inc_refs(struct folio *folio)  in lru_gen_inc_refs()  argument
435 static bool lru_gen_clear_refs(struct folio *folio)  in lru_gen_clear_refs()  argument
455 void folio_mark_accessed(struct folio *folio)  in folio_mark_accessed()  argument
457 	if (folio_test_dropbehind(folio))  in folio_mark_accessed()
460 		lru_gen_inc_refs(folio);  in folio_mark_accessed()
464 	if (!folio_test_referenced(folio)) {  in folio_mark_accessed()
465 		folio_set_referenced(folio);  in folio_mark_accessed()
466 	} else if (folio_test_unevictable(folio)) {  in folio_mark_accessed()
472 	} else if (!folio_test_active(folio)) {  in folio_mark_accessed()
479 		if (folio_test_lru(folio))  in folio_mark_accessed()
480 			folio_activate(folio);  in folio_mark_accessed()
482 			__lru_cache_activate_folio(folio);  in folio_mark_accessed()
483 		folio_clear_referenced(folio);  in folio_mark_accessed()
484 		workingset_activation(folio);  in folio_mark_accessed()
486 	if (folio_test_idle(folio))  in folio_mark_accessed()
487 		folio_clear_idle(folio);  in folio_mark_accessed()
500 void folio_add_lru(struct folio *folio)  in folio_add_lru()  argument
502 	VM_BUG_ON_FOLIO(folio_test_active(folio) &&  in folio_add_lru()
503 			folio_test_unevictable(folio), folio);  in folio_add_lru()
504 	VM_BUG_ON_FOLIO(folio_test_lru(folio), folio);  in folio_add_lru()
507 	if (lru_gen_enabled() && !folio_test_unevictable(folio) &&  in folio_add_lru()
509 		folio_set_active(folio);  in folio_add_lru()
511 	folio_batch_add_and_move(folio, lru_add);  in folio_add_lru()
523 void folio_add_lru_vma(struct folio *folio, struct vm_area_struct *vma)  in folio_add_lru_vma()  argument
525 	VM_BUG_ON_FOLIO(folio_test_lru(folio), folio);  in folio_add_lru_vma()
528 		mlock_new_folio(folio);  in folio_add_lru_vma()
530 		folio_add_lru(folio);  in folio_add_lru_vma()
554 static void lru_deactivate_file(struct lruvec *lruvec, struct folio *folio)  in lru_deactivate_file()  argument
556 	bool active = folio_test_active(folio) || lru_gen_enabled();  in lru_deactivate_file()
557 	long nr_pages = folio_nr_pages(folio);  in lru_deactivate_file()
559 	if (folio_test_unevictable(folio))  in lru_deactivate_file()
563 	if (folio_mapped(folio))  in lru_deactivate_file()
566 	lruvec_del_folio(lruvec, folio);  in lru_deactivate_file()
567 	folio_clear_active(folio);  in lru_deactivate_file()
568 	folio_clear_referenced(folio);  in lru_deactivate_file()
570 	if (folio_test_writeback(folio) || folio_test_dirty(folio)) {  in lru_deactivate_file()
577 		lruvec_add_folio(lruvec, folio);  in lru_deactivate_file()
578 		folio_set_reclaim(folio);  in lru_deactivate_file()
584 		lruvec_add_folio_tail(lruvec, folio);  in lru_deactivate_file()
595 static void lru_deactivate(struct lruvec *lruvec, struct folio *folio)  in lru_deactivate()  argument
597 	long nr_pages = folio_nr_pages(folio);  in lru_deactivate()
599 	if (folio_test_unevictable(folio) || !(folio_test_active(folio) || lru_gen_enabled()))  in lru_deactivate()
602 	lruvec_del_folio(lruvec, folio);  in lru_deactivate()
603 	folio_clear_active(folio);  in lru_deactivate()
604 	folio_clear_referenced(folio);  in lru_deactivate()
605 	lruvec_add_folio(lruvec, folio);  in lru_deactivate()
611 static void lru_lazyfree(struct lruvec *lruvec, struct folio *folio)  in lru_lazyfree()  argument
613 	long nr_pages = folio_nr_pages(folio);  in lru_lazyfree()
615 	if (!folio_test_anon(folio) || !folio_test_swapbacked(folio) ||  in lru_lazyfree()
616 	    folio_test_swapcache(folio) || folio_test_unevictable(folio))  in lru_lazyfree()
619 	lruvec_del_folio(lruvec, folio);  in lru_lazyfree()
620 	folio_clear_active(folio);  in lru_lazyfree()
622 		lru_gen_clear_refs(folio);  in lru_lazyfree()
624 		folio_clear_referenced(folio);  in lru_lazyfree()
630 	folio_clear_swapbacked(folio);  in lru_lazyfree()
631 	lruvec_add_folio(lruvec, folio);  in lru_lazyfree()
686 void deactivate_file_folio(struct folio *folio)  in deactivate_file_folio()  argument
689 	if (folio_test_unevictable(folio) || !folio_test_lru(folio))  in deactivate_file_folio()
692 	if (lru_gen_enabled() && lru_gen_clear_refs(folio))  in deactivate_file_folio()
695 	folio_batch_add_and_move(folio, lru_deactivate_file);  in deactivate_file_folio()
706 void folio_deactivate(struct folio *folio)  in folio_deactivate()  argument
708 	if (folio_test_unevictable(folio) || !folio_test_lru(folio))  in folio_deactivate()
711 	if (lru_gen_enabled() ? lru_gen_clear_refs(folio) : !folio_test_active(folio))  in folio_deactivate()
714 	folio_batch_add_and_move(folio, lru_deactivate);  in folio_deactivate()
724 void folio_mark_lazyfree(struct folio *folio)  in folio_mark_lazyfree()  argument
726 	if (!folio_test_anon(folio) || !folio_test_swapbacked(folio) ||  in folio_mark_lazyfree()
727 	    !folio_test_lru(folio) ||  in folio_mark_lazyfree()
728 	    folio_test_swapcache(folio) || folio_test_unevictable(folio))  in folio_mark_lazyfree()
731 	folio_batch_add_and_move(folio, lru_lazyfree);  in folio_mark_lazyfree()
958 		struct folio *folio = folios->folios[i];  in folios_put_refs()  local
961 		if (is_huge_zero_folio(folio))  in folios_put_refs()
964 		if (folio_is_zone_device(folio)) {  in folios_put_refs()
969 			if (folio_ref_sub_and_test(folio, nr_refs))  in folios_put_refs()
970 				free_zone_device_folio(folio);  in folios_put_refs()
974 		if (!folio_ref_sub_and_test(folio, nr_refs))  in folios_put_refs()
978 		if (folio_test_hugetlb(folio)) {  in folios_put_refs()
983 			free_huge_folio(folio);  in folios_put_refs()
986 		folio_unqueue_deferred_split(folio);  in folios_put_refs()
987 		__page_cache_release(folio, &lruvec, &flags);  in folios_put_refs()
990 			folios->folios[j] = folio;  in folios_put_refs()
1028 		struct folio *folio = page_folio(encoded_page_ptr(encoded[i]));  in release_pages()  local
1036 		if (folio_batch_add(&fbatch, folio) > 0)  in release_pages()
1080 		struct folio *folio = fbatch->folios[i];  in folio_batch_remove_exceptionals()  local
1081 		if (!xa_is_value(folio))  in folio_batch_remove_exceptionals()
1082 			fbatch->folios[j++] = folio;  in folio_batch_remove_exceptionals()