scsi: core: add scsi_host_complete_all_commands() helper (466552b9) · Commits · 戴 / test

drivers/scsi/hosts.c

+28 −0

Original line number	Diff line number	Diff line
		@@ -650,3 +650,31 @@ void scsi_flush_work(struct Scsi_Host *shost)
		flush_workqueue(shost->work_q);
		}
		EXPORT_SYMBOL_GPL(scsi_flush_work);

		static bool complete_all_cmds_iter(struct request rq, void data, bool rsvd)
		{
		struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
		int status = (int )data;

		scsi_dma_unmap(scmd);
		scmd->result = status << 16;
		scmd->scsi_done(scmd);
		return true;
		}

		/**
		* scsi_host_complete_all_commands - Terminate all running commands
		* @shost: Scsi Host on which commands should be terminated
		* @status: Status to be set for the terminated commands
		*
		* There is no protection against modification of the number
		* of outstanding commands. It is the responsibility of the
		* caller to ensure that concurrent I/O submission and/or
		* completion is stopped when calling this function.
		*/
		void scsi_host_complete_all_commands(struct Scsi_Host *shost, int status)
		{
		blk_mq_tagset_busy_iter(&shost->tag_set, complete_all_cmds_iter,
		&status);
		}
		EXPORT_SYMBOL_GPL(scsi_host_complete_all_commands);

+2 −0

Original line number	Diff line number	Diff line
		@@ -732,6 +732,8 @@ extern int scsi_host_busy(struct Scsi_Host *shost);
		extern void scsi_host_put(struct Scsi_Host *t);
		extern struct Scsi_Host *scsi_host_lookup(unsigned short);
		extern const char *scsi_host_state_name(enum scsi_host_state);
		extern void scsi_host_complete_all_commands(struct Scsi_Host *shost,
		int status);

		static inline int __must_check scsi_add_host(struct Scsi_Host *host,
		struct device *dev)