214 		if (offset < se->start_page)  in offset_to_swap_extent()
216 		else if (offset >= se->start_page + se->nr_pages)  in offset_to_swap_extent()
234 	sector = se->start_block + (offset - se->start_page);  in swap_page_sector()
243 				 pgoff_t start_page, pgoff_t nr_pages)  in discard_swap_cluster()  argument
245 	struct swap_extent *se = offset_to_swap_extent(si, start_page);  in discard_swap_cluster()
248 		pgoff_t offset = start_page - se->start_page;  in discard_swap_cluster()
254 		start_page += nr_blocks;  in discard_swap_cluster()
2331 	return se->start_block + (offset - se->start_page);  in map_swap_entry()
2374 add_swap_extent(struct swap_info_struct *sis, unsigned long start_page,  in add_swap_extent()  argument
2392 		BUG_ON(se->start_page + se->nr_pages != start_page);  in add_swap_extent()
2404 	new_se->start_page = start_page;  in add_swap_extent()