3484 		int new_order)  in __split_folio_to_order()  argument
3487 	const bool handle_hwpoison = folio_test_has_hwpoisoned(folio) && new_order;  in __split_folio_to_order()
3488 	long new_nr_pages = 1 << new_order;  in __split_folio_to_order()
3565 		if (new_order) {  in __split_folio_to_order()
3566 			prep_compound_page(new_head, new_order);  in __split_folio_to_order()
3581 	if (new_order)  in __split_folio_to_order()
3582 		folio_set_order(folio, new_order);  in __split_folio_to_order()
3628 static int __split_unmapped_folio(struct folio *folio, int new_order,  in __split_unmapped_folio()  argument
3634 	int start_order = split_type == SPLIT_TYPE_UNIFORM ? new_order : old_order - 1;  in __split_unmapped_folio()
3643 	     split_order >= new_order;  in __split_unmapped_folio()
3708 int folio_check_splittable(struct folio *folio, unsigned int new_order,  in folio_check_splittable()  argument
3724 		if (new_order == 1)  in folio_check_splittable()
3726 	} else if (split_type == SPLIT_TYPE_NON_UNIFORM || new_order) {  in folio_check_splittable()
3758 	if ((split_type == SPLIT_TYPE_NON_UNIFORM || new_order) && folio_test_swapcache(folio)) {  in folio_check_splittable()
3779 static int __folio_freeze_and_split_unmapped(struct folio *folio, unsigned int new_order,  in __folio_freeze_and_split_unmapped()  argument
3820 			    new_order < HPAGE_PMD_ORDER) {  in __folio_freeze_and_split_unmapped()
3845 		ret = __split_unmapped_folio(folio, new_order, split_at, xas,  in __folio_freeze_and_split_unmapped()
3944 static int __folio_split(struct folio *folio, unsigned int new_order,  in __folio_split()  argument
3968 	if (new_order >= old_order) {  in __folio_split()
3973 	ret = folio_check_splittable(folio, new_order, split_type);  in __folio_split()
4001 		if (new_order < min_order) {  in __folio_split()
4015 			xas_set_order(&xas, folio->index, new_order);  in __folio_split()
4064 	ret = __folio_freeze_and_split_unmapped(folio, new_order, split_at, &xas, mapping,  in __folio_split()
4137 int folio_split_unmapped(struct folio *folio, unsigned int new_order)  in folio_split_unmapped()  argument
4150 	ret = __folio_freeze_and_split_unmapped(folio, new_order, &folio->page, NULL,  in folio_split_unmapped()
4205 				     unsigned int new_order)  in __split_huge_page_to_list_to_order()  argument
4209 	return __folio_split(folio, new_order, &folio->page, page, list,  in __split_huge_page_to_list_to_order()
4237 int folio_split(struct folio *folio, unsigned int new_order,  in folio_split()  argument
4240 	return __folio_split(folio, new_order, split_at, &folio->page, list,  in folio_split()
4584 				unsigned long vaddr_end, unsigned int new_order,  in split_huge_pages_pid()  argument
4612 		 pid, vaddr_start, vaddr_end, new_order, in_folio_offset);  in split_huge_pages_pid()
4624 		unsigned int target_order = new_order;  in split_huge_pages_pid()
4644 			target_order = max(new_order,  in split_huge_pages_pid()
4701 				pgoff_t off_end, unsigned int new_order,  in split_huge_pages_in_file()  argument
4718 		 file_path, off_start, off_end, new_order, in_folio_offset);  in split_huge_pages_in_file()
4722 	target_order = max(new_order, min_order);  in split_huge_pages_in_file()
4782 	unsigned int new_order = 0;  in split_huge_pages_write()  local
4813 				&new_order, &in_folio_offset);  in split_huge_pages_write()
4819 				new_order, in_folio_offset);  in split_huge_pages_write()
4827 			&vaddr_end, &new_order, &in_folio_offset);  in split_huge_pages_write()
4837 	ret = split_huge_pages_pid(pid, vaddr_start, vaddr_end, new_order,  in split_huge_pages_write()