From: Jens Axboe Subject: [PATCH 3/7] scsi: add scsi-mq helpers to retrieve pdu and check started state Date: Fri, 3 Apr 2015 09:58:19 -0600 Message-ID: <1428076703-31014-4-git-send-email-axboe@fb.com> References: <1428076703-31014-1-git-send-email-axboe@fb.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1428076703-31014-1-git-send-email-axboe@fb.com> Sender: linux-kernel-owner@vger.kernel.org To: axboe@kernel.dk, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org Cc: hch@lst.de, Jens Axboe List-Id: linux-scsi@vger.kernel.org scsi_mq_scmd_to_pdu() returns the LLD pdu associated with a struct scsi_cmnd. scsi_mq_scmd_start() returns whether or not a given scsi command has been started or not. Signed-off-by: Jens Axboe --- include/scsi/scsi_cmnd.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 9fc1aecfc813..df02c89e8714 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -8,6 +8,7 @@ #include #include #include +#include struct Scsi_Host; struct scsi_driver; @@ -155,6 +156,16 @@ static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd) return *(struct scsi_driver **)cmd->request->rq_disk->private_data; } +static inline void *scsi_mq_scmd_to_pdu(struct scsi_cmnd *scmd) +{ + return blk_mq_rq_to_pdu(scmd->request) + sizeof(*scmd); +} + +static inline bool scsi_mq_scmd_started(struct scsi_cmnd *scmd) +{ + return blk_mq_request_started(scmd->request); +} + extern struct scsi_cmnd *scsi_get_command(struct scsi_device *, gfp_t); extern void scsi_put_command(struct scsi_cmnd *); extern void scsi_finish_command(struct scsi_cmnd *cmd); -- 1.9.1