12 static int set_migratetype_isolate(struct page *page,  in set_migratetype_isolate()  argument
21 	zone = page_zone(page);  in set_migratetype_isolate()
25 	pfn = page_to_pfn(page);  in set_migratetype_isolate()
49 	if (!has_unmovable_pages(zone, page, arg.pages_found,  in set_migratetype_isolate()
61 		int migratetype = get_pageblock_migratetype(page);  in set_migratetype_isolate()
63 		set_pageblock_migratetype(page, MIGRATE_ISOLATE);  in set_migratetype_isolate()
65 		nr_pages = move_freepages_block(zone, page, MIGRATE_ISOLATE);  in set_migratetype_isolate()
76 static void unset_migratetype_isolate(struct page *page, unsigned migratetype)  in unset_migratetype_isolate()  argument
80 	struct page *isolated_page = NULL;  in unset_migratetype_isolate()
83 	struct page *buddy;  in unset_migratetype_isolate()
85 	zone = page_zone(page);  in unset_migratetype_isolate()
87 	if (get_pageblock_migratetype(page) != MIGRATE_ISOLATE)  in unset_migratetype_isolate()
98 	if (PageBuddy(page)) {  in unset_migratetype_isolate()
99 		order = page_order(page);  in unset_migratetype_isolate()
101 			page_idx = page_to_pfn(page) & ((1 << MAX_ORDER) - 1);  in unset_migratetype_isolate()
103 			buddy = page + (buddy_idx - page_idx);  in unset_migratetype_isolate()
107 				__isolate_free_page(page, order);  in unset_migratetype_isolate()
108 				kernel_map_pages(page, (1 << order), 1);  in unset_migratetype_isolate()
109 				set_page_refcounted(page);  in unset_migratetype_isolate()
110 				isolated_page = page;  in unset_migratetype_isolate()
121 		nr_pages = move_freepages_block(zone, page, migratetype);  in unset_migratetype_isolate()
124 	set_pageblock_migratetype(page, migratetype);  in unset_migratetype_isolate()
132 static inline struct page *
163 	struct page *page;  in start_isolate_page_range()  local
171 		page = __first_valid_page(pfn, pageblock_nr_pages);  in start_isolate_page_range()
172 		if (page &&  in start_isolate_page_range()
173 		    set_migratetype_isolate(page, skip_hwpoisoned_pages)) {  in start_isolate_page_range()
195 	struct page *page;  in undo_isolate_page_range()  local
201 		page = __first_valid_page(pfn, pageblock_nr_pages);  in undo_isolate_page_range()
202 		if (!page || get_pageblock_migratetype(page) != MIGRATE_ISOLATE)  in undo_isolate_page_range()
204 		unset_migratetype_isolate(page, migratetype);  in undo_isolate_page_range()
219 	struct page *page;  in __test_page_isolated_in_pageblock()  local
226 		page = pfn_to_page(pfn);  in __test_page_isolated_in_pageblock()
227 		if (PageBuddy(page))  in __test_page_isolated_in_pageblock()
233 			pfn += 1 << page_order(page);  in __test_page_isolated_in_pageblock()
234 		else if (skip_hwpoisoned_pages && PageHWPoison(page))  in __test_page_isolated_in_pageblock()
249 	struct page *page;  in test_pages_isolated()  local
259 		page = __first_valid_page(pfn, pageblock_nr_pages);  in test_pages_isolated()
260 		if (page && get_pageblock_migratetype(page) != MIGRATE_ISOLATE)  in test_pages_isolated()
263 	page = __first_valid_page(start_pfn, end_pfn - start_pfn);  in test_pages_isolated()
264 	if ((pfn < end_pfn) || !page)  in test_pages_isolated()
267 	zone = page_zone(page);  in test_pages_isolated()
275 struct page *alloc_migrate_target(struct page *page, unsigned long private,  in alloc_migrate_target()  argument
285 	if (PageHuge(page)) {  in alloc_migrate_target()
286 		int node = next_online_node(page_to_nid(page));  in alloc_migrate_target()
289 		return alloc_huge_page_node(page_hstate(compound_head(page)),  in alloc_migrate_target()
293 	if (PageHighMem(page))  in alloc_migrate_target()