53  * @bitmap:	The bitmap represents which sector in the page has data.
54  *		Each bit represents one block size. For example, sector 8
866 static void null_free_sector(struct nullb *nullb, sector_t sector,  in null_free_sector()  argument
875 	idx = sector >> PAGE_SECTORS_SHIFT;  in null_free_sector()
876 	sector_bit = (sector & SECTOR_MASK);  in null_free_sector()
939 	sector_t sector, bool for_write, bool is_cache)  in __null_lookup_page()  argument
946 	idx = sector >> PAGE_SECTORS_SHIFT;  in __null_lookup_page()
947 	sector_bit = (sector & SECTOR_MASK);  in __null_lookup_page()
960 	sector_t sector, bool for_write, bool ignore_cache)  in null_lookup_page()  argument
965 		page = __null_lookup_page(nullb, sector, for_write, true);  in null_lookup_page()
968 	return __null_lookup_page(nullb, sector, for_write, false);  in null_lookup_page()
972 					   sector_t sector, bool ignore_cache)  in null_insert_page()  argument
979 	t_page = null_lookup_page(nullb, sector, true, ignore_cache);  in null_insert_page()
993 	idx = sector >> PAGE_SECTORS_SHIFT;  in null_insert_page()
1003 	return null_lookup_page(nullb, sector, true, ignore_cache);  in null_insert_page()
1109 	unsigned int off, sector_t sector, size_t n, bool is_fua)  in copy_to_nullb()  argument
1121 		offset = (sector & SECTOR_MASK) << SECTOR_SHIFT;  in copy_to_nullb()
1122 		t_page = null_insert_page(nullb, sector,  in copy_to_nullb()
1129 		__set_bit(sector & SECTOR_MASK, t_page->bitmap);  in copy_to_nullb()
1132 			null_free_sector(nullb, sector, true);  in copy_to_nullb()
1135 		sector += temp >> SECTOR_SHIFT;  in copy_to_nullb()
1141 	unsigned int off, sector_t sector, size_t n)  in copy_from_nullb()  argument
1150 		offset = (sector & SECTOR_MASK) << SECTOR_SHIFT;  in copy_from_nullb()
1151 		t_page = null_lookup_page(nullb, sector, false,  in copy_from_nullb()
1161 		sector += temp >> SECTOR_SHIFT;  in copy_from_nullb()
1173 				 sector_t sector, sector_t nr_sectors)  in null_handle_discard()  argument
1182 		null_free_sector(nullb, sector, false);  in null_handle_discard()
1184 			null_free_sector(nullb, sector, true);  in null_handle_discard()
1185 		sector += temp >> SECTOR_SHIFT;  in null_handle_discard()
1214 	unsigned int len, unsigned int off, bool is_write, sector_t sector,  in null_transfer()  argument
1224 				sector, len);  in null_transfer()
1228 				sector, valid_len);  in null_transfer()
1238 		err = copy_to_nullb(nullb, page, off, sector, len, is_fua);  in null_transfer()
1250 	sector_t sector = blk_rq_pos(rq);  in null_handle_rq()  local
1258 				     op_is_write(req_op(rq)), sector,  in null_handle_rq()
1262 		sector += len >> SECTOR_SHIFT;  in null_handle_rq()
1291 						 sector_t sector,  in null_handle_badblocks()  argument
1298 	if (badblocks_check(bb, sector, nr_sectors, &first_bad, &bad_sectors))  in null_handle_badblocks()
1306 						     sector_t sector,  in null_handle_memory_backed()  argument
1312 		return null_handle_discard(dev, sector, nr_sectors);  in null_handle_memory_backed()
1358 			      sector_t sector, unsigned int nr_sectors)  in null_process_cmd()  argument
1364 		ret = null_handle_badblocks(cmd, sector, nr_sectors);  in null_process_cmd()
1370 		return null_handle_memory_backed(cmd, op, sector, nr_sectors);  in null_process_cmd()
1375 static void null_handle_cmd(struct nullb_cmd *cmd, sector_t sector,  in null_handle_cmd()  argument
1388 		sts = null_process_zoned_cmd(cmd, op, sector, nr_sectors);  in null_handle_cmd()
1390 		sts = null_process_cmd(cmd, op, sector, nr_sectors);  in null_handle_cmd()
1593 	sector_t sector = blk_rq_pos(rq);  in null_queue_rq()  local
1637 	null_handle_cmd(cmd, sector, nr_sectors, req_op(rq));  in null_queue_rq()