blk_mq_rq_to

函数名称：lk_mq_rq_to_pdu - cast a request to a PDU*@rq: the request to be casted* Return: pointer to the PDU* Driver command data is immediately after the request. So add request to get* the PDU.

函数原型：static inline void *blk_mq_rq_to_pdu(struct request *rq)

返回类型：void

参数：

类型	参数	名称
struct request *	rq

**调用者**
名称	描述
bsg_transport_fill_hdr
bsg_transport_complete_rq
bsg_transport_free_rq
bsg_complete	sg_complete - softirq done routine for destroying the bsg requests*@rq: BSG request that holds the job to be destroyed
bsg_prepare_job	sg_prepare_job - create the bsg_job structure for the bsg request@dev: device that is being sent the bsg request@req: BSG request that needs a job structure
bsg_queue_rq	sg_queue_rq - generic handler for bsg requests@hctx: hardware queue@bd: queue data* On error the create_bsg_job function should return a -Exyz error value* that will be set to ->result.* Drivers/subsys should pass this to the queue init function.
bsg_init_rq	alled right after the request is allocated for the request_queue
bsg_initialize_rq	alled right before the request is given to the request_queue user
bsg_exit_rq
scsi_req

函数逻辑报告