227 static int lo_write_simple(struct loop_device *lo, struct request *rq,  in lo_write_simple()  argument
234 	rq_for_each_segment(bvec, rq, iter) {  in lo_write_simple()
249 static int lo_write_transfer(struct loop_device *lo, struct request *rq,  in lo_write_transfer()  argument
261 	rq_for_each_segment(bvec, rq, iter) {  in lo_write_transfer()
279 static int lo_read_simple(struct loop_device *lo, struct request *rq,  in lo_read_simple()  argument
287 	rq_for_each_segment(bvec, rq, iter) {  in lo_read_simple()
298 			__rq_for_each_bio(bio, rq)  in lo_read_simple()
308 static int lo_read_transfer(struct loop_device *lo, struct request *rq,  in lo_read_transfer()  argument
322 	rq_for_each_segment(bvec, rq, iter) {  in lo_read_transfer()
346 			__rq_for_each_bio(bio, rq)  in lo_read_transfer()
358 static int lo_discard(struct loop_device *lo, struct request *rq, loff_t pos)  in lo_discard()  argument
375 	ret = file->f_op->fallocate(file, mode, pos, blk_rq_bytes(rq));  in lo_discard()
382 static int lo_req_flush(struct loop_device *lo, struct request *rq)  in lo_req_flush()  argument
392 static int do_req_filebacked(struct loop_device *lo, struct request *rq)  in do_req_filebacked()  argument
397 	pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;  in do_req_filebacked()
399 	if (rq->cmd_flags & REQ_WRITE) {  in do_req_filebacked()
400 		if (rq->cmd_flags & REQ_FLUSH)  in do_req_filebacked()
401 			ret = lo_req_flush(lo, rq);  in do_req_filebacked()
402 		else if (rq->cmd_flags & REQ_DISCARD)  in do_req_filebacked()
403 			ret = lo_discard(lo, rq, pos);  in do_req_filebacked()
405 			ret = lo_write_transfer(lo, rq, pos);  in do_req_filebacked()
407 			ret = lo_write_simple(lo, rq, pos);  in do_req_filebacked()
411 			ret = lo_read_transfer(lo, rq, pos);  in do_req_filebacked()
413 			ret = lo_read_simple(lo, rq, pos);  in do_req_filebacked()
1433 	struct loop_cmd *cmd = blk_mq_rq_to_pdu(bd->rq);  in loop_queue_rq()
1434 	struct loop_device *lo = cmd->rq->q->queuedata;  in loop_queue_rq()
1436 	blk_mq_start_request(bd->rq);  in loop_queue_rq()
1441 	if (cmd->rq->cmd_flags & REQ_WRITE) {  in loop_queue_rq()
1442 		struct loop_device *lo = cmd->rq->q->queuedata;  in loop_queue_rq()
1464 	const bool write = cmd->rq->cmd_flags & REQ_WRITE;  in loop_handle_cmd()
1465 	struct loop_device *lo = cmd->rq->q->queuedata;  in loop_handle_cmd()
1471 	ret = do_req_filebacked(lo, cmd->rq);  in loop_handle_cmd()
1475 		cmd->rq->errors = -EIO;  in loop_handle_cmd()
1476 	blk_mq_complete_request(cmd->rq);  in loop_handle_cmd()
1512 static int loop_init_request(void *data, struct request *rq,  in loop_init_request()  argument
1516 	struct loop_cmd *cmd = blk_mq_rq_to_pdu(rq);  in loop_init_request()
1518 	cmd->rq = rq;  in loop_init_request()