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()
68 static void unset_migratetype_isolate(struct page *page, unsigned migratetype)  in unset_migratetype_isolate()  argument
75 	struct page *buddy;  in unset_migratetype_isolate()
77 	zone = page_zone(page);  in unset_migratetype_isolate()
79 	if (!is_migrate_isolate_page(page))  in unset_migratetype_isolate()
90 	if (PageBuddy(page)) {  in unset_migratetype_isolate()
91 		order = buddy_order(page);  in unset_migratetype_isolate()
93 			pfn = page_to_pfn(page);  in unset_migratetype_isolate()
95 			buddy = page + (buddy_pfn - pfn);  in unset_migratetype_isolate()
99 				__isolate_free_page(page, order);  in unset_migratetype_isolate()
116 		nr_pages = move_freepages_block(zone, page, migratetype, NULL);  in unset_migratetype_isolate()
119 	set_pageblock_migratetype(page, migratetype);  in unset_migratetype_isolate()
121 		__putback_isolated_page(page, order, migratetype);  in unset_migratetype_isolate()
127 static inline struct page *
133 		struct page *page;  in __first_valid_page()  local
135 		page = pfn_to_online_page(pfn + i);  in __first_valid_page()
136 		if (!page)  in __first_valid_page()
138 		return page;  in __first_valid_page()
188 	struct page *page;  in start_isolate_page_range()  local
196 		page = __first_valid_page(pfn, pageblock_nr_pages);  in start_isolate_page_range()
197 		if (page) {  in start_isolate_page_range()
198 			if (set_migratetype_isolate(page, migratetype, flags)) {  in start_isolate_page_range()
209 		struct page *page = pfn_to_online_page(pfn);  in start_isolate_page_range()  local
210 		if (!page)  in start_isolate_page_range()
212 		unset_migratetype_isolate(page, migratetype);  in start_isolate_page_range()
225 	struct page *page;  in undo_isolate_page_range()  local
233 		page = __first_valid_page(pfn, pageblock_nr_pages);  in undo_isolate_page_range()
234 		if (!page || !is_migrate_isolate_page(page))  in undo_isolate_page_range()
236 		unset_migratetype_isolate(page, migratetype);  in undo_isolate_page_range()
250 	struct page *page;  in __test_page_isolated_in_pageblock()  local
257 		page = pfn_to_page(pfn);  in __test_page_isolated_in_pageblock()
258 		if (PageBuddy(page))  in __test_page_isolated_in_pageblock()
264 			pfn += 1 << buddy_order(page);  in __test_page_isolated_in_pageblock()
265 		else if ((flags & MEMORY_OFFLINE) && PageHWPoison(page))  in __test_page_isolated_in_pageblock()
268 		else if ((flags & MEMORY_OFFLINE) && PageOffline(page) &&  in __test_page_isolated_in_pageblock()
269 			 !page_count(page))  in __test_page_isolated_in_pageblock()
288 	struct page *page;  in test_pages_isolated()  local
297 		page = __first_valid_page(pfn, pageblock_nr_pages);  in test_pages_isolated()
298 		if (page && !is_migrate_isolate_page(page))  in test_pages_isolated()
301 	page = __first_valid_page(start_pfn, end_pfn - start_pfn);  in test_pages_isolated()
302 	if ((pfn < end_pfn) || !page)  in test_pages_isolated()
305 	zone = page_zone(page);  in test_pages_isolated()