891 static inline bool page_is_buddy(struct page *page, struct page *buddy,  in page_is_buddy()  argument
894 	if (!page_is_guard(buddy) && !PageBuddy(buddy))  in page_is_buddy()
897 	if (buddy_order(buddy) != order)  in page_is_buddy()
904 	if (page_zone_id(page) != page_zone_id(buddy))  in page_is_buddy()
907 	VM_BUG_ON_PAGE(page_count(buddy) != 0, buddy);  in page_is_buddy()
1067 	struct page *buddy;  in __free_one_page()  local
1090 		buddy = page + (buddy_pfn - pfn);  in __free_one_page()
1092 		if (!page_is_buddy(page, buddy, order))  in __free_one_page()
1098 		if (page_is_guard(buddy))  in __free_one_page()
1099 			clear_page_guard(zone, buddy, order, migratetype);  in __free_one_page()
1101 			del_page_from_free_list(buddy, zone, order);  in __free_one_page()
1120 			buddy = page + (buddy_pfn - pfn);  in __free_one_page()
1121 			buddy_mt = get_pageblock_migratetype(buddy);  in __free_one_page()
1426 	struct page *buddy = page + (buddy_pfn - pfn);  in prefetch_buddy()  local
1428 	prefetch(buddy);  in prefetch_buddy()