217 		if (offset < se->start_page)  in offset_to_swap_extent()
219 		else if (offset >= se->start_page + se->nr_pages)  in offset_to_swap_extent()
237 	sector = se->start_block + (offset - se->start_page);  in swap_page_sector()
246 				 pgoff_t start_page, pgoff_t nr_pages)  in discard_swap_cluster()  argument
248 	struct swap_extent *se = offset_to_swap_extent(si, start_page);  in discard_swap_cluster()
251 		pgoff_t offset = start_page - se->start_page;  in discard_swap_cluster()
257 		start_page += nr_blocks;  in discard_swap_cluster()
1720 	return se->start_block + (offset - se->start_page);  in swapdev_block()
2179 add_swap_extent(struct swap_info_struct *sis, unsigned long start_page,  in add_swap_extent()  argument
2197 		BUG_ON(se->start_page + se->nr_pages != start_page);  in add_swap_extent()
2209 	new_se->start_page = start_page;  in add_swap_extent()