138 	struct swap_extent *se;  in discard_swap()  local
144 	se = &si->first_swap_extent;  in discard_swap()
145 	start_block = (se->start_block + 1) << (PAGE_SHIFT - 9);  in discard_swap()
146 	nr_blocks = ((sector_t)se->nr_pages - 1) << (PAGE_SHIFT - 9);  in discard_swap()
155 	list_for_each_entry(se, &si->first_swap_extent.list, list) {  in discard_swap()
156 		start_block = se->start_block << (PAGE_SHIFT - 9);  in discard_swap()
157 		nr_blocks = (sector_t)se->nr_pages << (PAGE_SHIFT - 9);  in discard_swap()
176 	struct swap_extent *se = si->curr_swap_extent;  in discard_swap_cluster()  local
180 		if (se->start_page <= start_page &&  in discard_swap_cluster()
181 		    start_page < se->start_page + se->nr_pages) {  in discard_swap_cluster()
182 			pgoff_t offset = start_page - se->start_page;  in discard_swap_cluster()
183 			sector_t start_block = se->start_block + offset;  in discard_swap_cluster()
184 			sector_t nr_blocks = se->nr_pages - offset;  in discard_swap_cluster()
192 				si->curr_swap_extent = se;  in discard_swap_cluster()
201 		se = list_next_entry(se, list);  in discard_swap_cluster()
1685 			struct swap_extent *se = &sis->first_swap_extent;  in swap_type_of()  local
1687 			if (se->start_block == offset) {  in swap_type_of()
2268 	struct swap_extent *se;  in map_swap_entry()  local
2276 	se = start_se;  in map_swap_entry()
2279 		if (se->start_page <= offset &&  in map_swap_entry()
2280 				offset < (se->start_page + se->nr_pages)) {  in map_swap_entry()
2281 			return se->start_block + (offset - se->start_page);  in map_swap_entry()
2283 		se = list_next_entry(se, list);  in map_swap_entry()
2284 		sis->curr_swap_extent = se;  in map_swap_entry()
2285 		BUG_ON(se == start_se);		/* It *must* be present */  in map_swap_entry()
2305 		struct swap_extent *se;  in destroy_swap_extents()  local
2307 		se = list_first_entry(&sis->first_swap_extent.list,  in destroy_swap_extents()
2309 		list_del(&se->list);  in destroy_swap_extents()
2310 		kfree(se);  in destroy_swap_extents()
2332 	struct swap_extent *se;  in add_swap_extent()  local
2337 		se = &sis->first_swap_extent;  in add_swap_extent()
2338 		sis->curr_swap_extent = se;  in add_swap_extent()
2339 		se->start_page = 0;  in add_swap_extent()
2340 		se->nr_pages = nr_pages;  in add_swap_extent()
2341 		se->start_block = start_block;  in add_swap_extent()
2345 		se = list_entry(lh, struct swap_extent, list);  in add_swap_extent()
2346 		BUG_ON(se->start_page + se->nr_pages != start_page);  in add_swap_extent()
2347 		if (se->start_block + se->nr_pages == start_block) {  in add_swap_extent()
2349 			se->nr_pages += nr_pages;  in add_swap_extent()
2357 	new_se = kmalloc(sizeof(*se), GFP_KERNEL);  in add_swap_extent()