321 static bool cond_accept_memory(struct zone *zone, unsigned int order,
347 _deferred_grow_zone(struct zone *zone, unsigned int order)  in _deferred_grow_zone()  argument
349 	return deferred_grow_zone(zone, order);  in _deferred_grow_zone()
357 static inline bool _deferred_grow_zone(struct zone *zone, unsigned int order)  in _deferred_grow_zone()  argument
605 static int page_outside_zone_boundaries(struct zone *zone, struct page *page)  in page_outside_zone_boundaries()  argument
613 		seq = zone_span_seqbegin(zone);  in page_outside_zone_boundaries()
614 		start_pfn = zone->zone_start_pfn;  in page_outside_zone_boundaries()
615 		sp = zone->spanned_pages;  in page_outside_zone_boundaries()
616 		ret = !zone_spans_pfn(zone, pfn);  in page_outside_zone_boundaries()
617 	} while (zone_span_seqretry(zone, seq));  in page_outside_zone_boundaries()
621 			pfn, zone_to_nid(zone), zone->name,  in page_outside_zone_boundaries()
630 static bool __maybe_unused bad_range(struct zone *zone, struct page *page)  in bad_range()  argument
632 	if (page_outside_zone_boundaries(zone, page))  in bad_range()
634 	if (zone != page_zone(page))  in bad_range()
640 static inline bool __maybe_unused bad_range(struct zone *zone, struct page *page)  in bad_range()  argument
760 static inline struct capture_control *task_capc(struct zone *zone)  in task_capc()  argument
767 		capc->cc->zone == zone ? capc : NULL;  in task_capc()
802 static inline struct capture_control *task_capc(struct zone *zone)  in task_capc()  argument
815 static inline void account_freepages(struct zone *zone, int nr_pages,  in account_freepages()  argument
818 	lockdep_assert_held(&zone->lock);  in account_freepages()
823 	__mod_zone_page_state(zone, NR_FREE_PAGES, nr_pages);  in account_freepages()
826 		__mod_zone_page_state(zone, NR_FREE_CMA_PAGES, nr_pages);  in account_freepages()
828 		WRITE_ONCE(zone->nr_free_highatomic,  in account_freepages()
829 			   zone->nr_free_highatomic + nr_pages);  in account_freepages()
833 static inline void __add_to_free_list(struct page *page, struct zone *zone,  in __add_to_free_list()  argument
837 	struct free_area *area = &zone->free_area[order];  in __add_to_free_list()
851 		__mod_zone_page_state(zone, NR_FREE_PAGES_BLOCKS, nr_pages);  in __add_to_free_list()
859 static inline void move_to_free_list(struct page *page, struct zone *zone,  in move_to_free_list()  argument
862 	struct free_area *area = &zone->free_area[order];  in move_to_free_list()
872 	account_freepages(zone, -nr_pages, old_mt);  in move_to_free_list()
873 	account_freepages(zone, nr_pages, new_mt);  in move_to_free_list()
879 		__mod_zone_page_state(zone, NR_FREE_PAGES_BLOCKS, nr_pages);  in move_to_free_list()
883 static inline void __del_page_from_free_list(struct page *page, struct zone *zone,  in __del_page_from_free_list()  argument
899 	zone->free_area[order].nr_free--;  in __del_page_from_free_list()
902 		__mod_zone_page_state(zone, NR_FREE_PAGES_BLOCKS, -nr_pages);  in __del_page_from_free_list()
905 static inline void del_page_from_free_list(struct page *page, struct zone *zone,  in del_page_from_free_list()  argument
908 	__del_page_from_free_list(page, zone, order, migratetype);  in del_page_from_free_list()
909 	account_freepages(zone, -(1 << order), migratetype);  in del_page_from_free_list()
981 		struct zone *zone, unsigned int order,  in __free_one_page()  argument
984 	struct capture_control *capc = task_capc(zone);  in __free_one_page()
990 	VM_BUG_ON(!zone_is_initialized(zone));  in __free_one_page()
995 	VM_BUG_ON_PAGE(bad_range(zone, page), page);  in __free_one_page()
997 	account_freepages(zone, 1 << order, migratetype);  in __free_one_page()
1003 			account_freepages(zone, -(1 << order), migratetype);  in __free_one_page()
1031 			clear_page_guard(zone, buddy, order);  in __free_one_page()
1033 			__del_page_from_free_list(buddy, zone, order, buddy_mt);  in __free_one_page()
1060 	__add_to_free_list(page, zone, order, migratetype, to_tail);  in __free_one_page()
1481 static void free_pcppages_bulk(struct zone *zone, int count,  in free_pcppages_bulk()  argument
1498 	spin_lock_irqsave(&zone->lock, flags);  in free_pcppages_bulk()
1526 			__free_one_page(page, pfn, zone, order, mt, FPI_NONE);  in free_pcppages_bulk()
1531 	spin_unlock_irqrestore(&zone->lock, flags);  in free_pcppages_bulk()
1535 static void split_large_buddy(struct zone *zone, struct page *page,  in split_large_buddy()  argument
1550 		__free_one_page(page, pfn, zone, order, mt, fpi);  in split_large_buddy()
1558 static void add_page_to_zone_llist(struct zone *zone, struct page *page,  in add_page_to_zone_llist()  argument
1564 	llist_add(&page->pcp_llist, &zone->trylock_free_pages);  in add_page_to_zone_llist()
1567 static void free_one_page(struct zone *zone, struct page *page,  in free_one_page()  argument
1575 		if (!spin_trylock_irqsave(&zone->lock, flags)) {  in free_one_page()
1576 			add_page_to_zone_llist(zone, page, order);  in free_one_page()
1580 		spin_lock_irqsave(&zone->lock, flags);  in free_one_page()
1584 	llhead = &zone->trylock_free_pages;  in free_one_page()
1593 			split_large_buddy(zone, p, page_to_pfn(p), p_order, fpi_flags);  in free_one_page()
1597 	split_large_buddy(zone, page, pfn, order, fpi_flags);  in free_one_page()
1598 	spin_unlock_irqrestore(&zone->lock, flags);  in free_one_page()
1607 	struct zone *zone = page_zone(page);  in __free_pages_ok()  local
1610 		free_one_page(zone, page, pfn, order, fpi_flags);  in __free_pages_ok()
1686 				     unsigned long end_pfn, struct zone *zone)  in __pageblock_pfn_to_page()  argument
1701 	if (page_zone(start_page) != zone)  in __pageblock_pfn_to_page()
1727 static inline unsigned int expand(struct zone *zone, struct page *page, int low,  in expand()  argument
1736 		VM_BUG_ON_PAGE(bad_range(zone, &page[size]), &page[size]);  in expand()
1744 		if (set_page_guard(zone, &page[size], high))  in expand()
1747 		__add_to_free_list(&page[size], zone, high, migratetype, false);  in expand()
1755 static __always_inline void page_del_and_expand(struct zone *zone,  in page_del_and_expand()  argument
1761 	__del_page_from_free_list(page, zone, high, migratetype);  in page_del_and_expand()
1762 	nr_pages -= expand(zone, page, low, high, migratetype);  in page_del_and_expand()
1763 	account_freepages(zone, -nr_pages, migratetype);  in page_del_and_expand()
1914 struct page *__rmqueue_smallest(struct zone *zone, unsigned int order,  in __rmqueue_smallest()  argument
1923 		area = &(zone->free_area[current_order]);  in __rmqueue_smallest()
1928 		page_del_and_expand(zone, page, order, current_order,  in __rmqueue_smallest()
1953 static __always_inline struct page *__rmqueue_cma_fallback(struct zone *zone,  in __rmqueue_cma_fallback()  argument
1956 	return __rmqueue_smallest(zone, order, MIGRATE_CMA);  in __rmqueue_cma_fallback()
1959 static inline struct page *__rmqueue_cma_fallback(struct zone *zone,  in __rmqueue_cma_fallback()  argument
1967 static int __move_freepages_block(struct zone *zone, unsigned long start_pfn,  in __move_freepages_block()  argument
1986 		VM_BUG_ON_PAGE(page_to_nid(page) != zone_to_nid(zone), page);  in __move_freepages_block()
1987 		VM_BUG_ON_PAGE(page_zone(page) != zone, page);  in __move_freepages_block()
1991 		move_to_free_list(page, zone, order, old_mt, new_mt);  in __move_freepages_block()
2000 static bool prep_move_freepages_block(struct zone *zone, struct page *page,  in prep_move_freepages_block()  argument
2017 	if (!zone_spans_pfn(zone, start))  in prep_move_freepages_block()
2019 	if (!zone_spans_pfn(zone, end - 1))  in prep_move_freepages_block()
2050 static int move_freepages_block(struct zone *zone, struct page *page,  in move_freepages_block()  argument
2056 	if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))  in move_freepages_block()
2059 	res = __move_freepages_block(zone, start_pfn, old_mt, new_mt);  in move_freepages_block()
2124 static bool __move_freepages_block_isolate(struct zone *zone,  in __move_freepages_block_isolate()  argument
2138 	if (!prep_move_freepages_block(zone, page, &start_pfn, NULL, NULL))  in __move_freepages_block_isolate()
2151 		del_page_from_free_list(buddy, zone, order,  in __move_freepages_block_isolate()
2154 		split_large_buddy(zone, buddy, buddy_pfn, order, FPI_NONE);  in __move_freepages_block_isolate()
2170 	__move_freepages_block(zone, start_pfn, from_mt, to_mt);  in __move_freepages_block_isolate()
2176 bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page)  in pageblock_isolate_and_move_free_pages()  argument
2178 	return __move_freepages_block_isolate(zone, page, true);  in pageblock_isolate_and_move_free_pages()
2181 bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page)  in pageblock_unisolate_and_move_free_pages()  argument
2183 	return __move_freepages_block_isolate(zone, page, false);  in pageblock_unisolate_and_move_free_pages()
2188 static inline bool boost_watermark(struct zone *zone)  in boost_watermark()  argument
2200 	if ((pageblock_nr_pages * 4) > zone_managed_pages(zone))  in boost_watermark()
2203 	max_boost = mult_frac(zone->_watermark[WMARK_HIGH],  in boost_watermark()
2219 	zone->watermark_boost = min(zone->watermark_boost + pageblock_nr_pages,  in boost_watermark()
2307 try_to_claim_block(struct zone *zone, struct page *page,  in try_to_claim_block()  argument
2318 		del_page_from_free_list(page, zone, current_order, block_type);  in try_to_claim_block()
2320 		nr_added = expand(zone, page, order, current_order, start_type);  in try_to_claim_block()
2321 		account_freepages(zone, nr_added, start_type);  in try_to_claim_block()
2330 	if (boost_watermark(zone) && (alloc_flags & ALLOC_KSWAPD))  in try_to_claim_block()
2331 		set_bit(ZONE_BOOSTED_WATERMARK, &zone->flags);  in try_to_claim_block()
2334 	if (!prep_move_freepages_block(zone, page, &start_pfn, &free_pages,  in try_to_claim_block()
2365 		__move_freepages_block(zone, start_pfn, block_type, start_type);  in try_to_claim_block()
2367 		return __rmqueue_smallest(zone, order, start_type);  in try_to_claim_block()
2382 __rmqueue_claim(struct zone *zone, int order, int start_migratetype,  in __rmqueue_claim()  argument
2406 		area = &(zone->free_area[current_order]);  in __rmqueue_claim()
2419 		page = try_to_claim_block(zone, page, current_order, order,  in __rmqueue_claim()
2437 __rmqueue_steal(struct zone *zone, int order, int start_migratetype)  in __rmqueue_steal()  argument
2445 		area = &(zone->free_area[current_order]);  in __rmqueue_steal()
2452 		page_del_and_expand(zone, page, order, current_order, fallback_mt);  in __rmqueue_steal()
2473 __rmqueue(struct zone *zone, unsigned int order, int migratetype,  in __rmqueue()  argument
2485 		    zone_page_state(zone, NR_FREE_CMA_PAGES) >  in __rmqueue()
2486 		    zone_page_state(zone, NR_FREE_PAGES) / 2) {  in __rmqueue()
2487 			page = __rmqueue_cma_fallback(zone, order);  in __rmqueue()
2504 		page = __rmqueue_smallest(zone, order, migratetype);  in __rmqueue()
2510 			page = __rmqueue_cma_fallback(zone, order);  in __rmqueue()
2518 		page = __rmqueue_claim(zone, order, migratetype, alloc_flags);  in __rmqueue()
2527 			page = __rmqueue_steal(zone, order, migratetype);  in __rmqueue()
2542 static int rmqueue_bulk(struct zone *zone, unsigned int order,  in rmqueue_bulk()  argument
2551 		if (!spin_trylock_irqsave(&zone->lock, flags))  in rmqueue_bulk()
2554 		spin_lock_irqsave(&zone->lock, flags);  in rmqueue_bulk()
2557 		struct page *page = __rmqueue(zone, order, migratetype,  in rmqueue_bulk()
2574 	spin_unlock_irqrestore(&zone->lock, flags);  in rmqueue_bulk()
2583 bool decay_pcp_high(struct zone *zone, struct per_cpu_pages *pcp)  in decay_pcp_high()  argument
2607 		free_pcppages_bulk(zone, to_drain_batched, pcp, 0);  in decay_pcp_high()
2623 void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp)  in drain_zone_pages()  argument
2632 		free_pcppages_bulk(zone, to_drain, pcp, 0);  in drain_zone_pages()
2641 static void drain_pages_zone(unsigned int cpu, struct zone *zone)  in drain_pages_zone()  argument
2643 	struct per_cpu_pages *pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu);  in drain_pages_zone()
2654 			free_pcppages_bulk(zone, to_drain, pcp, 0);  in drain_pages_zone()
2666 	struct zone *zone;  in drain_pages()  local
2668 	for_each_populated_zone(zone) {  in drain_pages()
2669 		drain_pages_zone(cpu, zone);  in drain_pages()
2676 void drain_local_pages(struct zone *zone)  in drain_local_pages()  argument
2680 	if (zone)  in drain_local_pages()
2681 		drain_pages_zone(cpu, zone);  in drain_local_pages()
2696 static void __drain_all_pages(struct zone *zone, bool force_all_cpus)  in __drain_all_pages()  argument
2712 		if (!zone)  in __drain_all_pages()
2725 		struct zone *z;  in __drain_all_pages()
2734 		} else if (zone) {  in __drain_all_pages()
2735 			pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu);  in __drain_all_pages()
2755 		if (zone)  in __drain_all_pages()
2756 			drain_pages_zone(cpu, zone);  in __drain_all_pages()
2769 void drain_all_pages(struct zone *zone)  in drain_all_pages()  argument
2771 	__drain_all_pages(zone, false);  in drain_all_pages()
2799 static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone,  in nr_pcp_high()  argument
2821 	if (test_bit(ZONE_RECLAIM_ACTIVE, &zone->flags)) {  in nr_pcp_high()
2831 	if (test_bit(ZONE_BELOW_HIGH, &zone->flags)) {  in nr_pcp_high()
2854 static bool free_frozen_page_commit(struct zone *zone,  in free_frozen_page_commit()  argument
2903 	high = nr_pcp_high(pcp, zone, batch, free_high);  in free_frozen_page_commit()
2910 		free_pcppages_bulk(zone, to_free_batched, pcp, pindex);  in free_frozen_page_commit()
2918 		pcp = pcp_spin_trylock(zone->per_cpu_pageset, *UP_flags);  in free_frozen_page_commit()
2936 	if (test_bit(ZONE_BELOW_HIGH, &zone->flags) &&  in free_frozen_page_commit()
2937 	    zone_watermark_ok(zone, 0, high_wmark_pages(zone),  in free_frozen_page_commit()
2939 		struct pglist_data *pgdat = zone->zone_pgdat;  in free_frozen_page_commit()
2940 		clear_bit(ZONE_BELOW_HIGH, &zone->flags);  in free_frozen_page_commit()
2964 	struct zone *zone;  in __free_frozen_pages()  local
2983 	zone = page_zone(page);  in __free_frozen_pages()
2987 			free_one_page(zone, page, pfn, order, fpi_flags);  in __free_frozen_pages()
2995 		add_page_to_zone_llist(zone, page, order);  in __free_frozen_pages()
2998 	pcp = pcp_spin_trylock(zone->per_cpu_pageset, UP_flags);  in __free_frozen_pages()
3000 		if (!free_frozen_page_commit(zone, pcp, page, migratetype,  in __free_frozen_pages()
3005 		free_one_page(zone, page, pfn, order, fpi_flags);  in __free_frozen_pages()
3021 	struct zone *locked_zone = NULL;  in free_unref_folios()
3050 		struct zone *zone = folio_zone(folio);  in free_unref_folios()  local
3059 		if (zone != locked_zone ||  in free_unref_folios()
3072 				free_one_page(zone, &folio->page, pfn,  in free_unref_folios()
3081 			pcp = pcp_spin_trylock(zone->per_cpu_pageset, UP_flags);  in free_unref_folios()
3083 				free_one_page(zone, &folio->page, pfn,  in free_unref_folios()
3087 			locked_zone = zone;  in free_unref_folios()
3098 		if (!free_frozen_page_commit(zone, pcp, &folio->page,  in free_unref_folios()
3135 	struct zone *zone = page_zone(page);  in __isolate_free_page()  local
3146 		watermark = zone->_watermark[WMARK_MIN] + (1UL << order);  in __isolate_free_page()
3147 		if (!zone_watermark_ok(zone, 0, watermark, 0, ALLOC_CMA))  in __isolate_free_page()
3151 	del_page_from_free_list(page, zone, order, mt);  in __isolate_free_page()
3166 				move_freepages_block(zone, page, mt,  in __isolate_free_page()
3185 	struct zone *zone = page_zone(page);  in __putback_isolated_page()  local
3188 	lockdep_assert_held(&zone->lock);  in __putback_isolated_page()
3191 	__free_one_page(page, page_to_pfn(page), zone, order, mt,  in __putback_isolated_page()
3198 static inline void zone_statistics(struct zone *preferred_zone, struct zone *z,  in zone_statistics()
3222 struct page *rmqueue_buddy(struct zone *preferred_zone, struct zone *zone,  in rmqueue_buddy()  argument
3232 			if (!spin_trylock_irqsave(&zone->lock, flags))  in rmqueue_buddy()
3235 			spin_lock_irqsave(&zone->lock, flags);  in rmqueue_buddy()
3238 			page = __rmqueue_smallest(zone, order, MIGRATE_HIGHATOMIC);  in rmqueue_buddy()
3242 			page = __rmqueue(zone, order, migratetype, alloc_flags, &rmqm);  in rmqueue_buddy()
3251 				page = __rmqueue_smallest(zone, order, MIGRATE_HIGHATOMIC);  in rmqueue_buddy()
3254 				spin_unlock_irqrestore(&zone->lock, flags);  in rmqueue_buddy()
3258 		spin_unlock_irqrestore(&zone->lock, flags);  in rmqueue_buddy()
3262 	zone_statistics(preferred_zone, zone, 1);  in rmqueue_buddy()
3267 static int nr_pcp_alloc(struct per_cpu_pages *pcp, struct zone *zone, int order)  in nr_pcp_alloc()  argument
3290 	if (high_min != high_max && !test_bit(ZONE_BELOW_HIGH, &zone->flags))  in nr_pcp_alloc()
3319 struct page *__rmqueue_pcplist(struct zone *zone, unsigned int order,  in __rmqueue_pcplist()  argument
3329 			int batch = nr_pcp_alloc(pcp, zone, order);  in __rmqueue_pcplist()
3332 			alloced = rmqueue_bulk(zone, order,  in __rmqueue_pcplist()
3350 static struct page *rmqueue_pcplist(struct zone *preferred_zone,  in rmqueue_pcplist()
3351 			struct zone *zone, unsigned int order,  in rmqueue_pcplist()  argument
3360 	pcp = pcp_spin_trylock(zone->per_cpu_pageset, UP_flags);  in rmqueue_pcplist()
3371 	page = __rmqueue_pcplist(zone, order, migratetype, alloc_flags, pcp, list);  in rmqueue_pcplist()
3375 		zone_statistics(preferred_zone, zone, 1);  in rmqueue_pcplist()
3393 struct page *rmqueue(struct zone *preferred_zone,  in rmqueue()
3394 			struct zone *zone, unsigned int order,  in rmqueue()  argument
3401 		page = rmqueue_pcplist(preferred_zone, zone, order,  in rmqueue()
3407 	page = rmqueue_buddy(preferred_zone, zone, order, alloc_flags,  in rmqueue()
3413 	    unlikely(test_bit(ZONE_BOOSTED_WATERMARK, &zone->flags))) {  in rmqueue()
3414 		clear_bit(ZONE_BOOSTED_WATERMARK, &zone->flags);  in rmqueue()
3415 		wakeup_kswapd(zone, 0, 0, zone_idx(zone));  in rmqueue()
3418 	VM_BUG_ON_PAGE(page && bad_range(zone, page), page);  in rmqueue()
3428 					 struct zone *zone)  in reserve_highatomic_pageblock()  argument
3439 	if ((zone_managed_pages(zone) / 100) < pageblock_nr_pages)  in reserve_highatomic_pageblock()
3441 	max_managed = ALIGN((zone_managed_pages(zone) / 100), pageblock_nr_pages);  in reserve_highatomic_pageblock()
3442 	if (zone->nr_reserved_highatomic >= max_managed)  in reserve_highatomic_pageblock()
3445 	spin_lock_irqsave(&zone->lock, flags);  in reserve_highatomic_pageblock()
3448 	if (zone->nr_reserved_highatomic >= max_managed)  in reserve_highatomic_pageblock()
3458 		if (move_freepages_block(zone, page, mt, MIGRATE_HIGHATOMIC) == -1)  in reserve_highatomic_pageblock()
3460 		zone->nr_reserved_highatomic += pageblock_nr_pages;  in reserve_highatomic_pageblock()
3463 		zone->nr_reserved_highatomic += 1 << order;  in reserve_highatomic_pageblock()
3467 	spin_unlock_irqrestore(&zone->lock, flags);  in reserve_highatomic_pageblock()
3485 	struct zone *zone;  in unreserve_highatomic_pageblock()  local
3490 	for_each_zone_zonelist_nodemask(zone, z, zonelist, ac->highest_zoneidx,  in unreserve_highatomic_pageblock()
3496 		if (!force && zone->nr_reserved_highatomic <=  in unreserve_highatomic_pageblock()
3500 		spin_lock_irqsave(&zone->lock, flags);  in unreserve_highatomic_pageblock()
3502 			struct free_area *area = &(zone->free_area[order]);  in unreserve_highatomic_pageblock()
3517 			if (WARN_ON_ONCE(size > zone->nr_reserved_highatomic))  in unreserve_highatomic_pageblock()
3518 				size = zone->nr_reserved_highatomic;  in unreserve_highatomic_pageblock()
3519 			zone->nr_reserved_highatomic -= size;  in unreserve_highatomic_pageblock()
3531 				ret = move_freepages_block(zone, page,  in unreserve_highatomic_pageblock()
3535 				move_to_free_list(page, zone, order,  in unreserve_highatomic_pageblock()
3548 				spin_unlock_irqrestore(&zone->lock, flags);  in unreserve_highatomic_pageblock()
3552 		spin_unlock_irqrestore(&zone->lock, flags);  in unreserve_highatomic_pageblock()
3558 static inline long __zone_watermark_unusable_free(struct zone *z,  in __zone_watermark_unusable_free()
3585 bool __zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark,  in __zone_watermark_ok()
3663 bool zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark,  in zone_watermark_ok()
3670 static inline bool zone_watermark_fast(struct zone *z, unsigned int order,  in zone_watermark_fast()
3718 static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone)  in zone_allows_reclaim()  argument
3720 	return node_distance(zone_to_nid(local_zone), zone_to_nid(zone)) <=  in zone_allows_reclaim()
3724 static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone)  in zone_allows_reclaim()  argument
3739 alloc_flags_nofragment(struct zone *zone, gfp_t gfp_mask)  in alloc_flags_nofragment()  argument
3755 	if (!zone)  in alloc_flags_nofragment()
3758 	if (zone_idx(zone) != ZONE_NORMAL)  in alloc_flags_nofragment()
3767 	if (nr_online_nodes > 1 && !populated_zone(--zone))  in alloc_flags_nofragment()
3795 	struct zone *zone;  in get_page_from_freelist()  local
3809 	for_next_zone_zonelist_nodemask(zone, z, ac->highest_zoneidx,  in get_page_from_freelist()
3816 			!__cpuset_zone_allowed(zone, gfp_mask))  in get_page_from_freelist()
3838 			if (last_pgdat != zone->zone_pgdat) {  in get_page_from_freelist()
3839 				last_pgdat = zone->zone_pgdat;  in get_page_from_freelist()
3840 				last_pgdat_dirty_ok = node_dirty_ok(zone->zone_pgdat);  in get_page_from_freelist()
3848 		    zone != zonelist_zone(ac->preferred_zoneref)) {  in get_page_from_freelist()
3857 			if (zone_to_nid(zone) != local_nid) {  in get_page_from_freelist()
3871 		    !waitqueue_active(&zone->zone_pgdat->kswapd_wait)) {  in get_page_from_freelist()
3876 		cond_accept_memory(zone, order, alloc_flags);  in get_page_from_freelist()
3885 		if (test_bit(ZONE_BELOW_HIGH, &zone->flags))  in get_page_from_freelist()
3888 		mark = high_wmark_pages(zone);  in get_page_from_freelist()
3889 		if (zone_watermark_fast(zone, order, mark,  in get_page_from_freelist()
3894 			set_bit(ZONE_BELOW_HIGH, &zone->flags);  in get_page_from_freelist()
3897 		mark = wmark_pages(zone, alloc_flags & ALLOC_WMARK_MASK);  in get_page_from_freelist()
3898 		if (!zone_watermark_fast(zone, order, mark,  in get_page_from_freelist()
3903 			if (cond_accept_memory(zone, order, alloc_flags))  in get_page_from_freelist()
3911 				if (_deferred_grow_zone(zone, order))  in get_page_from_freelist()
3920 			    !zone_allows_reclaim(zonelist_zone(ac->preferred_zoneref), zone))  in get_page_from_freelist()
3923 			ret = node_reclaim(zone->zone_pgdat, gfp_mask, order);  in get_page_from_freelist()
3933 				if (zone_watermark_ok(zone, order, mark,  in get_page_from_freelist()
3942 		page = rmqueue(zonelist_zone(ac->preferred_zoneref), zone, order,  in get_page_from_freelist()
3952 				reserve_highatomic_pageblock(page, order, zone);  in get_page_from_freelist()
3956 			if (cond_accept_memory(zone, order, alloc_flags))  in get_page_from_freelist()
3961 				if (_deferred_grow_zone(zone, order))  in get_page_from_freelist()
4187 		struct zone *zone = page_zone(page);  in __alloc_pages_direct_compact()  local
4189 		zone->compact_blockskip_flush = false;  in __alloc_pages_direct_compact()
4190 		compaction_defer_reset(zone, order, true);  in __alloc_pages_direct_compact()
4287 	struct zone *zone;  in should_compact_retry()  local
4299 	for_each_zone_zonelist_nodemask(zone, z, ac->zonelist,  in should_compact_retry()
4301 		if (zone_watermark_ok(zone, 0, min_wmark_pages(zone),  in should_compact_retry()
4457 	struct zone *zone;  in wake_all_kswapds()  local
4467 	for_each_zone_zonelist_nodemask(zone, z, ac->zonelist, highest_zoneidx,  in wake_all_kswapds()
4469 		if (!managed_zone(zone))  in wake_all_kswapds()
4471 		if (last_pgdat == zone->zone_pgdat)  in wake_all_kswapds()
4473 		wakeup_kswapd(zone, gfp_mask, reclaim_order, highest_zoneidx);  in wake_all_kswapds()
4474 		last_pgdat = zone->zone_pgdat;  in wake_all_kswapds()
4587 	struct zone *zone;  in should_reclaim_retry()  local
4611 	for_each_zone_zonelist_nodemask(zone, z, ac->zonelist,  in should_reclaim_retry()
4615 		unsigned long min_wmark = min_wmark_pages(zone);  in should_reclaim_retry()
4620 			!__cpuset_zone_allowed(zone, gfp_mask))  in should_reclaim_retry()
4623 		available = reclaimable = zone_reclaimable_pages(zone);  in should_reclaim_retry()
4624 		available += zone_page_state_snapshot(zone, NR_FREE_PAGES);  in should_reclaim_retry()
4630 		wmark = __zone_watermark_ok(zone, order, min_wmark,  in should_reclaim_retry()
5061 	struct zone *zone;  in alloc_pages_bulk_noprof()  local
5114 	for_next_zone_zonelist_nodemask(zone, z, ac.highest_zoneidx, ac.nodemask) {  in alloc_pages_bulk_noprof()
5118 		    !__cpuset_zone_allowed(zone, gfp)) {  in alloc_pages_bulk_noprof()
5122 		if (nr_online_nodes > 1 && zone != zonelist_zone(ac.preferred_zoneref) &&  in alloc_pages_bulk_noprof()
5123 		    zone_to_nid(zone) != zonelist_node_idx(ac.preferred_zoneref)) {  in alloc_pages_bulk_noprof()
5127 		cond_accept_memory(zone, 0, alloc_flags);  in alloc_pages_bulk_noprof()
5129 		mark = wmark_pages(zone, alloc_flags & ALLOC_WMARK_MASK) + nr_pages;  in alloc_pages_bulk_noprof()
5130 		if (zone_watermark_fast(zone, 0,  mark,  in alloc_pages_bulk_noprof()
5136 		if (cond_accept_memory(zone, 0, alloc_flags))  in alloc_pages_bulk_noprof()
5141 			if (_deferred_grow_zone(zone, 0))  in alloc_pages_bulk_noprof()
5150 	if (unlikely(!zone))  in alloc_pages_bulk_noprof()
5154 	pcp = pcp_spin_trylock(zone->per_cpu_pageset, UP_flags);  in alloc_pages_bulk_noprof()
5168 		page = __rmqueue_pcplist(zone, 0, ac.migratetype, alloc_flags,  in alloc_pages_bulk_noprof()
5187 	__count_zid_vm_events(PGALLOC, zone_idx(zone), nr_account);  in alloc_pages_bulk_noprof()
5188 	zone_statistics(zonelist_zone(ac.preferred_zoneref), zone, nr_account);  in alloc_pages_bulk_noprof()
5500 	struct zone *zone;  in nr_free_zone_pages()  local
5507 	for_each_zone_zonelist(zone, z, zonelist, offset) {  in nr_free_zone_pages()
5508 		unsigned long size = zone_managed_pages(zone);  in nr_free_zone_pages()
5509 		unsigned long high = high_wmark_pages(zone);  in nr_free_zone_pages()
5532 static void zoneref_set_zone(struct zone *zone, struct zoneref *zoneref)  in zoneref_set_zone()  argument
5534 	zoneref->zone = zone;  in zoneref_set_zone()
5535 	zoneref->zone_idx = zone_idx(zone);  in zoneref_set_zone()
5545 	struct zone *zone;  in build_zonerefs_node()  local
5551 		zone = pgdat->node_zones + zone_type;  in build_zonerefs_node()
5552 		if (populated_zone(zone)) {  in build_zonerefs_node()
5553 			zoneref_set_zone(zone, &zonerefs[nr_zones++]);  in build_zonerefs_node()
5677 	zonerefs->zone = NULL;  in build_zonelists_in_node_order()
5692 	zonerefs->zone = NULL;  in build_thisnode_zonelists()
5761 	zonerefs->zone = NULL;  in build_zonelists()
5914 static int zone_batchsize(struct zone *zone)  in zone_batchsize()  argument
5925 	batch = min(zone_managed_pages(zone) >> 12, SZ_256K / PAGE_SIZE);  in zone_batchsize()
5962 static int zone_highsize(struct zone *zone, int batch, int cpu_online,  in zone_highsize()  argument
5976 		total_pages = low_wmark_pages(zone);  in zone_highsize()
5983 		total_pages = zone_managed_pages(zone) / high_fraction;  in zone_highsize()
5994 	nr_split_cpus = cpumask_weight(cpumask_of_node(zone_to_nid(zone))) + cpu_online;  in zone_highsize()
6058 static void __zone_set_pageset_high_and_batch(struct zone *zone, unsigned long high_min,  in __zone_set_pageset_high_and_batch()  argument
6065 		pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu);  in __zone_set_pageset_high_and_batch()
6074 static void zone_set_pageset_high_and_batch(struct zone *zone, int cpu_online)  in zone_set_pageset_high_and_batch()  argument
6078 	new_batch = zone_batchsize(zone);  in zone_set_pageset_high_and_batch()
6080 		new_high_min = zone_highsize(zone, new_batch, cpu_online,  in zone_set_pageset_high_and_batch()
6088 		new_high_min = zone_highsize(zone, new_batch, cpu_online, 0);  in zone_set_pageset_high_and_batch()
6089 		new_high_max = zone_highsize(zone, new_batch, cpu_online,  in zone_set_pageset_high_and_batch()
6093 	if (zone->pageset_high_min == new_high_min &&  in zone_set_pageset_high_and_batch()
6094 	    zone->pageset_high_max == new_high_max &&  in zone_set_pageset_high_and_batch()
6095 	    zone->pageset_batch == new_batch)  in zone_set_pageset_high_and_batch()
6098 	zone->pageset_high_min = new_high_min;  in zone_set_pageset_high_and_batch()
6099 	zone->pageset_high_max = new_high_max;  in zone_set_pageset_high_and_batch()
6100 	zone->pageset_batch = new_batch;  in zone_set_pageset_high_and_batch()
6102 	__zone_set_pageset_high_and_batch(zone, new_high_min, new_high_max,  in zone_set_pageset_high_and_batch()
6106 void __meminit setup_zone_pageset(struct zone *zone)  in setup_zone_pageset()  argument
6112 		zone->per_cpu_zonestats = alloc_percpu(struct per_cpu_zonestat);  in setup_zone_pageset()
6114 	zone->per_cpu_pageset = alloc_percpu(struct per_cpu_pages);  in setup_zone_pageset()
6119 		pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu);  in setup_zone_pageset()
6120 		pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu);  in setup_zone_pageset()
6124 	zone_set_pageset_high_and_batch(zone, 0);  in setup_zone_pageset()
6131 static void zone_pcp_update(struct zone *zone, int cpu_online)  in zone_pcp_update()  argument
6134 	zone_set_pageset_high_and_batch(zone, cpu_online);  in zone_pcp_update()
6138 static void zone_pcp_update_cacheinfo(struct zone *zone, unsigned int cpu)  in zone_pcp_update_cacheinfo()  argument
6144 	pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu);  in zone_pcp_update_cacheinfo()
6163 	struct zone *zone;  in setup_pcp_cacheinfo()  local
6165 	for_each_populated_zone(zone)  in setup_pcp_cacheinfo()
6166 		zone_pcp_update_cacheinfo(zone, cpu);  in setup_pcp_cacheinfo()
6176 	struct zone *zone;  in setup_per_cpu_pageset()  local
6179 	for_each_populated_zone(zone)  in setup_per_cpu_pageset()
6180 		setup_zone_pageset(zone);  in setup_per_cpu_pageset()
6201 __meminit void zone_pcp_init(struct zone *zone)  in zone_pcp_init()  argument
6208 	zone->per_cpu_pageset = &boot_pageset;  in zone_pcp_init()
6209 	zone->per_cpu_zonestats = &boot_zonestats;  in zone_pcp_init()
6210 	zone->pageset_high_min = BOOT_PAGESET_HIGH;  in zone_pcp_init()
6211 	zone->pageset_high_max = BOOT_PAGESET_HIGH;  in zone_pcp_init()
6212 	zone->pageset_batch = BOOT_PAGESET_BATCH;  in zone_pcp_init()
6214 	if (populated_zone(zone))  in zone_pcp_init()
6215 		pr_debug("  %s zone: %lu pages, LIFO batch:%u\n", zone->name,  in zone_pcp_init()
6216 			 zone->present_pages, zone_batchsize(zone));  in zone_pcp_init()
6277 	struct zone *zone;  in page_alloc_cpu_dead()  local
6300 	for_each_populated_zone(zone)  in page_alloc_cpu_dead()
6301 		zone_pcp_update(zone, 0);  in page_alloc_cpu_dead()
6308 	struct zone *zone;  in page_alloc_cpu_online()  local
6310 	for_each_populated_zone(zone)  in page_alloc_cpu_online()
6311 		zone_pcp_update(zone, 1);  in page_alloc_cpu_online()
6341 			struct zone *zone = pgdat->node_zones + i;  in calculate_totalreserve_pages()  local
6343 			unsigned long managed_pages = zone_managed_pages(zone);  in calculate_totalreserve_pages()
6354 				if (!zone->lowmem_reserve[j])  in calculate_totalreserve_pages()
6357 				max = zone->lowmem_reserve[j];  in calculate_totalreserve_pages()
6361 			max += high_wmark_pages(zone);  in calculate_totalreserve_pages()
6401 			struct zone *zone = &pgdat->node_zones[i];  in setup_per_zone_lowmem_reserve()  local
6403 			bool clear = !ratio || !zone_managed_pages(zone);  in setup_per_zone_lowmem_reserve()
6407 				struct zone *upper_zone = &pgdat->node_zones[j];  in setup_per_zone_lowmem_reserve()
6412 					zone->lowmem_reserve[j] = 0;  in setup_per_zone_lowmem_reserve()
6414 					zone->lowmem_reserve[j] = managed_pages / ratio;  in setup_per_zone_lowmem_reserve()
6415 				trace_mm_setup_per_zone_lowmem_reserve(zone, upper_zone,  in setup_per_zone_lowmem_reserve()
6416 								       zone->lowmem_reserve[j]);  in setup_per_zone_lowmem_reserve()
6429 	struct zone *zone;  in __setup_per_zone_wmarks()  local
6433 	for_each_zone(zone) {  in __setup_per_zone_wmarks()
6434 		if (!is_highmem(zone) && zone_idx(zone) != ZONE_MOVABLE)  in __setup_per_zone_wmarks()
6435 			lowmem_pages += zone_managed_pages(zone);  in __setup_per_zone_wmarks()
6438 	for_each_zone(zone) {  in __setup_per_zone_wmarks()
6441 		spin_lock_irqsave(&zone->lock, flags);  in __setup_per_zone_wmarks()
6442 		tmp = (u64)pages_min * zone_managed_pages(zone);  in __setup_per_zone_wmarks()
6444 		if (is_highmem(zone) || zone_idx(zone) == ZONE_MOVABLE) {  in __setup_per_zone_wmarks()
6456 			min_pages = zone_managed_pages(zone) / 1024;  in __setup_per_zone_wmarks()
6458 			zone->_watermark[WMARK_MIN] = min_pages;  in __setup_per_zone_wmarks()
6464 			zone->_watermark[WMARK_MIN] = tmp;  in __setup_per_zone_wmarks()
6473 			    mult_frac(zone_managed_pages(zone),  in __setup_per_zone_wmarks()
6476 		zone->watermark_boost = 0;  in __setup_per_zone_wmarks()
6477 		zone->_watermark[WMARK_LOW]  = min_wmark_pages(zone) + tmp;  in __setup_per_zone_wmarks()
6478 		zone->_watermark[WMARK_HIGH] = low_wmark_pages(zone) + tmp;  in __setup_per_zone_wmarks()
6479 		zone->_watermark[WMARK_PROMO] = high_wmark_pages(zone) + tmp;  in __setup_per_zone_wmarks()
6480 		trace_mm_setup_per_zone_wmarks(zone);  in __setup_per_zone_wmarks()
6482 		spin_unlock_irqrestore(&zone->lock, flags);  in __setup_per_zone_wmarks()
6498 	struct zone *zone;  in setup_per_zone_wmarks()  local
6509 	for_each_zone(zone)  in setup_per_zone_wmarks()
6510 		zone_pcp_update(zone, 0);  in setup_per_zone_wmarks()
6611 	struct zone *zone;  in setup_min_unmapped_ratio()  local
6616 	for_each_zone(zone)  in setup_min_unmapped_ratio()
6617 		zone->zone_pgdat->min_unmapped_pages += (zone_managed_pages(zone) *  in setup_min_unmapped_ratio()
6639 	struct zone *zone;  in setup_min_slab_ratio()  local
6644 	for_each_zone(zone)  in setup_min_slab_ratio()
6645 		zone->zone_pgdat->min_slab_pages += (zone_managed_pages(zone) *  in setup_min_slab_ratio()
6697 	struct zone *zone;  in percpu_pagelist_high_fraction_sysctl_handler()  local
6728 	for_each_populated_zone(zone)  in percpu_pagelist_high_fraction_sysctl_handler()
6729 		zone_set_pageset_high_and_batch(zone, 0);  in percpu_pagelist_high_fraction_sysctl_handler()
6844 		.nid = zone_to_nid(cc->zone),  in __alloc_contig_migrate_range()
6869 		nr_reclaimed = reclaim_clean_pages_from_list(cc->zone,  in __alloc_contig_migrate_range()
6984 		.zone = page_zone(pfn_to_page(start)),  in alloc_contig_range_noprof()
7032 	drain_all_pages(cc.zone);  in alloc_contig_range_noprof()
7124 static bool pfn_range_valid_contig(struct zone *z, unsigned long start_pfn,  in pfn_range_valid_contig()
7147 static bool zone_spans_last_pfn(const struct zone *zone,  in zone_spans_last_pfn()  argument
7152 	return zone_spans_pfn(zone, last_pfn);  in zone_spans_last_pfn()
7183 	struct zone *zone;  in alloc_contig_pages_noprof()  local
7187 	for_each_zone_zonelist_nodemask(zone, z, zonelist,  in alloc_contig_pages_noprof()
7189 		spin_lock_irqsave(&zone->lock, flags);  in alloc_contig_pages_noprof()
7191 		pfn = ALIGN(zone->zone_start_pfn, nr_pages);  in alloc_contig_pages_noprof()
7192 		while (zone_spans_last_pfn(zone, pfn, nr_pages)) {  in alloc_contig_pages_noprof()
7193 			if (pfn_range_valid_contig(zone, pfn, nr_pages)) {  in alloc_contig_pages_noprof()
7201 				spin_unlock_irqrestore(&zone->lock, flags);  in alloc_contig_pages_noprof()
7206 				spin_lock_irqsave(&zone->lock, flags);  in alloc_contig_pages_noprof()
7210 		spin_unlock_irqrestore(&zone->lock, flags);  in alloc_contig_pages_noprof()
7250 void zone_pcp_disable(struct zone *zone)  in zone_pcp_disable()  argument
7253 	__zone_set_pageset_high_and_batch(zone, 0, 0, 1);  in zone_pcp_disable()
7254 	__drain_all_pages(zone, true);  in zone_pcp_disable()
7257 void zone_pcp_enable(struct zone *zone)  in zone_pcp_enable()  argument
7259 	__zone_set_pageset_high_and_batch(zone, zone->pageset_high_min,  in zone_pcp_enable()
7260 		zone->pageset_high_max, zone->pageset_batch);  in zone_pcp_enable()
7264 void zone_pcp_reset(struct zone *zone)  in zone_pcp_reset()  argument
7269 	if (zone->per_cpu_pageset != &boot_pageset) {  in zone_pcp_reset()
7271 			pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu);  in zone_pcp_reset()
7272 			drain_zonestat(zone, pzstats);  in zone_pcp_reset()
7274 		free_percpu(zone->per_cpu_pageset);  in zone_pcp_reset()
7275 		zone->per_cpu_pageset = &boot_pageset;  in zone_pcp_reset()
7276 		if (zone->per_cpu_zonestats != &boot_zonestats) {  in zone_pcp_reset()
7277 			free_percpu(zone->per_cpu_zonestats);  in zone_pcp_reset()
7278 			zone->per_cpu_zonestats = &boot_zonestats;  in zone_pcp_reset()
7298 	struct zone *zone;  in __offline_isolated_pages()  local
7302 	zone = page_zone(pfn_to_page(pfn));  in __offline_isolated_pages()
7303 	spin_lock_irqsave(&zone->lock, flags);  in __offline_isolated_pages()
7330 		del_page_from_free_list(page, zone, order, MIGRATE_ISOLATE);  in __offline_isolated_pages()
7333 	spin_unlock_irqrestore(&zone->lock, flags);  in __offline_isolated_pages()
7360 static inline void add_to_free_list(struct page *page, struct zone *zone,  in add_to_free_list()  argument
7364 	__add_to_free_list(page, zone, order, migratetype, tail);  in add_to_free_list()
7365 	account_freepages(zone, 1 << order, migratetype);  in add_to_free_list()
7372 static void break_down_buddy_pages(struct zone *zone, struct page *page,  in break_down_buddy_pages()  argument
7390 		if (set_page_guard(zone, current_buddy, high))  in break_down_buddy_pages()
7393 		add_to_free_list(current_buddy, zone, high, migratetype, false);  in break_down_buddy_pages()
7403 	struct zone *zone = page_zone(page);  in take_page_off_buddy()  local
7409 	spin_lock_irqsave(&zone->lock, flags);  in take_page_off_buddy()
7419 			del_page_from_free_list(page_head, zone, page_order,  in take_page_off_buddy()
7421 			break_down_buddy_pages(zone, page_head, page, 0,  in take_page_off_buddy()
7430 	spin_unlock_irqrestore(&zone->lock, flags);  in take_page_off_buddy()
7439 	struct zone *zone = page_zone(page);  in put_page_back_buddy()  local
7443 	spin_lock_irqsave(&zone->lock, flags);  in put_page_back_buddy()
7449 		__free_one_page(page, pfn, zone, 0, migratetype, FPI_NONE);  in put_page_back_buddy()
7454 	spin_unlock_irqrestore(&zone->lock, flags);  in put_page_back_buddy()
7466 		struct zone *zone = &pgdat->node_zones[ZONE_DMA];  in has_managed_dma()  local
7468 		if (managed_zone(zone))  in has_managed_dma()
7500 static void __accept_page(struct zone *zone, unsigned long *flags,  in __accept_page()  argument
7504 	account_freepages(zone, -MAX_ORDER_NR_PAGES, MIGRATE_MOVABLE);  in __accept_page()
7505 	__mod_zone_page_state(zone, NR_UNACCEPTED, -MAX_ORDER_NR_PAGES);  in __accept_page()
7507 	spin_unlock_irqrestore(&zone->lock, *flags);  in __accept_page()
7516 	struct zone *zone = page_zone(page);  in accept_page()  local
7519 	spin_lock_irqsave(&zone->lock, flags);  in accept_page()
7521 		spin_unlock_irqrestore(&zone->lock, flags);  in accept_page()
7526 	__accept_page(zone, &flags, page);  in accept_page()
7529 static bool try_to_accept_memory_one(struct zone *zone)  in try_to_accept_memory_one()  argument
7534 	spin_lock_irqsave(&zone->lock, flags);  in try_to_accept_memory_one()
7535 	page = list_first_entry_or_null(&zone->unaccepted_pages,  in try_to_accept_memory_one()
7538 		spin_unlock_irqrestore(&zone->lock, flags);  in try_to_accept_memory_one()
7543 	__accept_page(zone, &flags, page);  in try_to_accept_memory_one()
7548 static bool cond_accept_memory(struct zone *zone, unsigned int order,  in cond_accept_memory()  argument
7554 	if (list_empty(&zone->unaccepted_pages))  in cond_accept_memory()
7561 	wmark = promo_wmark_pages(zone);  in cond_accept_memory()
7569 		return try_to_accept_memory_one(zone);  in cond_accept_memory()
7573 		    (zone_page_state(zone, NR_FREE_PAGES) -  in cond_accept_memory()
7574 		    __zone_watermark_unusable_free(zone, order, 0) -  in cond_accept_memory()
7575 		    zone_page_state(zone, NR_UNACCEPTED));  in cond_accept_memory()
7578 		if (!try_to_accept_memory_one(zone))  in cond_accept_memory()
7589 	struct zone *zone = page_zone(page);  in __free_unaccepted()  local
7595 	spin_lock_irqsave(&zone->lock, flags);  in __free_unaccepted()
7596 	list_add_tail(&page->lru, &zone->unaccepted_pages);  in __free_unaccepted()
7597 	account_freepages(zone, MAX_ORDER_NR_PAGES, MIGRATE_MOVABLE);  in __free_unaccepted()
7598 	__mod_zone_page_state(zone, NR_UNACCEPTED, MAX_ORDER_NR_PAGES);  in __free_unaccepted()
7600 	spin_unlock_irqrestore(&zone->lock, flags);  in __free_unaccepted()
7612 static bool cond_accept_memory(struct zone *zone, unsigned int order,  in cond_accept_memory()  argument