18 static int set_migratetype_isolate(struct page *page, int migratetype, int isol_flags)  in set_migratetype_isolate()  argument
20 	struct zone *zone = page_zone(page);  in set_migratetype_isolate()
21 	struct page *unmovable;  in set_migratetype_isolate()
31 	if (is_migrate_isolate_page(page)) {  in set_migratetype_isolate()
40 	unmovable = has_unmovable_pages(zone, page, migratetype, isol_flags);  in set_migratetype_isolate()
43 		int mt = get_pageblock_migratetype(page);  in set_migratetype_isolate()
45 		set_pageblock_migratetype(page, MIGRATE_ISOLATE);  in set_migratetype_isolate()
47 		nr_pages = move_freepages_block(zone, page, MIGRATE_ISOLATE,  in set_migratetype_isolate()
67 static void unset_migratetype_isolate(struct page *page, unsigned migratetype)  in unset_migratetype_isolate()  argument
74 	struct page *buddy;  in unset_migratetype_isolate()
76 	zone = page_zone(page);  in unset_migratetype_isolate()
78 	if (!is_migrate_isolate_page(page))  in unset_migratetype_isolate()
89 	if (PageBuddy(page)) {  in unset_migratetype_isolate()
90 		order = buddy_order(page);  in unset_migratetype_isolate()
92 			pfn = page_to_pfn(page);  in unset_migratetype_isolate()
94 			buddy = page + (buddy_pfn - pfn);  in unset_migratetype_isolate()
98 				__isolate_free_page(page, order);  in unset_migratetype_isolate()
115 		nr_pages = move_freepages_block(zone, page, migratetype, NULL);  in unset_migratetype_isolate()
118 	set_pageblock_migratetype(page, migratetype);  in unset_migratetype_isolate()
120 		__putback_isolated_page(page, order, migratetype);  in unset_migratetype_isolate()
126 static inline struct page *
132 		struct page *page;  in __first_valid_page()  local
134 		page = pfn_to_online_page(pfn + i);  in __first_valid_page()
135 		if (!page)  in __first_valid_page()
137 		return page;  in __first_valid_page()
189 	struct page *page;  in start_isolate_page_range()  local
197 		page = __first_valid_page(pfn, pageblock_nr_pages);  in start_isolate_page_range()
198 		if (page) {  in start_isolate_page_range()
199 			if (set_migratetype_isolate(page, migratetype, flags)) {  in start_isolate_page_range()
202 					*failed_pfn = page_to_pfn(page);  in start_isolate_page_range()
212 		struct page *page = pfn_to_online_page(pfn);  in start_isolate_page_range()  local
213 		if (!page)  in start_isolate_page_range()
215 		unset_migratetype_isolate(page, migratetype);  in start_isolate_page_range()
228 	struct page *page;  in undo_isolate_page_range()  local
236 		page = __first_valid_page(pfn, pageblock_nr_pages);  in undo_isolate_page_range()
237 		if (!page || !is_migrate_isolate_page(page))  in undo_isolate_page_range()
239 		unset_migratetype_isolate(page, migratetype);  in undo_isolate_page_range()
253 	struct page *page;  in __test_page_isolated_in_pageblock()  local
260 		page = pfn_to_page(pfn);  in __test_page_isolated_in_pageblock()
261 		if (PageBuddy(page))  in __test_page_isolated_in_pageblock()
267 			pfn += 1 << buddy_order(page);  in __test_page_isolated_in_pageblock()
268 		else if ((flags & MEMORY_OFFLINE) && PageHWPoison(page))  in __test_page_isolated_in_pageblock()
271 		else if ((flags & MEMORY_OFFLINE) && PageOffline(page) &&  in __test_page_isolated_in_pageblock()
272 			 !page_count(page))  in __test_page_isolated_in_pageblock()
284 		dump_page_owner(page);  in __test_page_isolated_in_pageblock()
295 	struct page *page;  in test_pages_isolated()  local
304 		page = __first_valid_page(pfn, pageblock_nr_pages);  in test_pages_isolated()
305 		if (page && !is_migrate_isolate_page(page))  in test_pages_isolated()
308 	page = __first_valid_page(start_pfn, end_pfn - start_pfn);  in test_pages_isolated()
309 	if ((pfn < end_pfn) || !page)  in test_pages_isolated()
312 	zone = page_zone(page);  in test_pages_isolated()