1394 		if (PageDoubleMap(page) || !page->mapping)  in follow_trans_huge_pmd()
1398 		if (page->mapping && !PageDoubleMap(page))  in follow_trans_huge_pmd()
2423 	VM_BUG_ON_PAGE(tail > 2 && page_tail->mapping != TAIL_MAPPING,  in __split_huge_page_tail()
2425 	page_tail->mapping = head->mapping;  in __split_huge_page_tail()
2489 				shmem_uncharge(head->mapping->host, 1);  in __split_huge_page()
2492 			__xa_store(&head->mapping->i_pages, head[i].index,  in __split_huge_page()
2516 		xa_unlock(&head->mapping->i_pages);  in __split_huge_page()
2668 	struct address_space *mapping = NULL;  in split_huge_page_to_list()  local
2695 		mapping = NULL;  in split_huge_page_to_list()
2698 		mapping = head->mapping;  in split_huge_page_to_list()
2701 		if (!mapping) {  in split_huge_page_to_list()
2707 		i_mmap_lock_read(mapping);  in split_huge_page_to_list()
2716 		end = DIV_ROUND_UP(i_size_read(mapping->host), PAGE_SIZE);  in split_huge_page_to_list()
2733 	if (mapping) {  in split_huge_page_to_list()
2734 		XA_STATE(xas, &mapping->i_pages, page_index(head));  in split_huge_page_to_list()
2740 		xa_lock(&mapping->i_pages);  in split_huge_page_to_list()
2753 		if (mapping) {  in split_huge_page_to_list()
2765 		if (mapping)  in split_huge_page_to_list()
2766 			xa_unlock(&mapping->i_pages);  in split_huge_page_to_list()
2777 	if (mapping)  in split_huge_page_to_list()
2778 		i_mmap_unlock_read(mapping);  in split_huge_page_to_list()
2869 		page = list_entry((void *)pos, struct page, mapping);  in deferred_split_scan()
2884 		page = list_entry((void *)pos, struct page, mapping);  in deferred_split_scan()