12 int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages)  in set_migratetype_isolate()  argument
20 	zone = page_zone(page);  in set_migratetype_isolate()
24 	pfn = page_to_pfn(page);  in set_migratetype_isolate()
48 	if (!has_unmovable_pages(zone, page, arg.pages_found,  in set_migratetype_isolate()
60 		int migratetype = get_pageblock_migratetype(page);  in set_migratetype_isolate()
62 		set_pageblock_migratetype(page, MIGRATE_ISOLATE);  in set_migratetype_isolate()
64 		nr_pages = move_freepages_block(zone, page, MIGRATE_ISOLATE);  in set_migratetype_isolate()
75 void unset_migratetype_isolate(struct page *page, unsigned migratetype)  in unset_migratetype_isolate()  argument
79 	struct page *isolated_page = NULL;  in unset_migratetype_isolate()
82 	struct page *buddy;  in unset_migratetype_isolate()
84 	zone = page_zone(page);  in unset_migratetype_isolate()
86 	if (get_pageblock_migratetype(page) != MIGRATE_ISOLATE)  in unset_migratetype_isolate()
97 	if (PageBuddy(page)) {  in unset_migratetype_isolate()
98 		order = page_order(page);  in unset_migratetype_isolate()
100 			page_idx = page_to_pfn(page) & ((1 << MAX_ORDER) - 1);  in unset_migratetype_isolate()
102 			buddy = page + (buddy_idx - page_idx);  in unset_migratetype_isolate()
106 				__isolate_free_page(page, order);  in unset_migratetype_isolate()
107 				kernel_map_pages(page, (1 << order), 1);  in unset_migratetype_isolate()
108 				set_page_refcounted(page);  in unset_migratetype_isolate()
109 				isolated_page = page;  in unset_migratetype_isolate()
120 		nr_pages = move_freepages_block(zone, page, migratetype);  in unset_migratetype_isolate()
123 	set_pageblock_migratetype(page, migratetype);  in unset_migratetype_isolate()
131 static inline struct page *
162 	struct page *page;  in start_isolate_page_range()  local
170 		page = __first_valid_page(pfn, pageblock_nr_pages);  in start_isolate_page_range()
171 		if (page &&  in start_isolate_page_range()
172 		    set_migratetype_isolate(page, skip_hwpoisoned_pages)) {  in start_isolate_page_range()
194 	struct page *page;  in undo_isolate_page_range()  local
200 		page = __first_valid_page(pfn, pageblock_nr_pages);  in undo_isolate_page_range()
201 		if (!page || get_pageblock_migratetype(page) != MIGRATE_ISOLATE)  in undo_isolate_page_range()
203 		unset_migratetype_isolate(page, migratetype);  in undo_isolate_page_range()
218 	struct page *page;  in __test_page_isolated_in_pageblock()  local
225 		page = pfn_to_page(pfn);  in __test_page_isolated_in_pageblock()
226 		if (PageBuddy(page)) {  in __test_page_isolated_in_pageblock()
234 			if (get_freepage_migratetype(page) != MIGRATE_ISOLATE) {  in __test_page_isolated_in_pageblock()
235 				struct page *end_page;  in __test_page_isolated_in_pageblock()
237 				end_page = page + (1 << page_order(page)) - 1;  in __test_page_isolated_in_pageblock()
238 				move_freepages(page_zone(page), page, end_page,  in __test_page_isolated_in_pageblock()
241 			pfn += 1 << page_order(page);  in __test_page_isolated_in_pageblock()
243 		else if (page_count(page) == 0 &&  in __test_page_isolated_in_pageblock()
244 			get_freepage_migratetype(page) == MIGRATE_ISOLATE)  in __test_page_isolated_in_pageblock()
246 		else if (skip_hwpoisoned_pages && PageHWPoison(page)) {  in __test_page_isolated_in_pageblock()
266 	struct page *page;  in test_pages_isolated()  local
276 		page = __first_valid_page(pfn, pageblock_nr_pages);  in test_pages_isolated()
277 		if (page && get_pageblock_migratetype(page) != MIGRATE_ISOLATE)  in test_pages_isolated()
280 	page = __first_valid_page(start_pfn, end_pfn - start_pfn);  in test_pages_isolated()
281 	if ((pfn < end_pfn) || !page)  in test_pages_isolated()
284 	zone = page_zone(page);  in test_pages_isolated()
292 struct page *alloc_migrate_target(struct page *page, unsigned long private,  in alloc_migrate_target()  argument
302 	if (PageHuge(page)) {  in alloc_migrate_target()
303 		nodemask_t src = nodemask_of_node(page_to_nid(page));  in alloc_migrate_target()
306 		return alloc_huge_page_node(page_hstate(compound_head(page)),  in alloc_migrate_target()
307 					    next_node(page_to_nid(page), dst));  in alloc_migrate_target()
310 	if (PageHighMem(page))  in alloc_migrate_target()