From bed2213d01de474eb8a6f3891070eec6be6fe772 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Fri, 25 Aug 2017 13:46:32 -0700 Subject: scsi: Use blk_mq_rq_to_pdu() to convert a request to a SCSI command pointer Since commit e9c787e65c0c ("scsi: allocate scsi_cmnd structures as part of struct request") struct request and struct scsi_cmnd are adjacent. This means that there is now an alternative to reading req->special to convert a pointer to a prepared request into a SCSI command pointer, namely by using blk_mq_rq_to_pdu(). Make this change where appropriate. Although this patch does not change any functionality, it slightly improves performance and slightly improves readability. Signed-off-by: Bart Van Assche Reviewed-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn Reviewed-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- drivers/scsi/scsi_error.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/scsi_error.c') diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 01b2d2055edf..38942050b265 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -259,7 +259,7 @@ void scsi_eh_scmd_add(struct scsi_cmnd *scmd) */ enum blk_eh_timer_return scsi_times_out(struct request *req) { - struct scsi_cmnd *scmd = req->special; + struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(req); enum blk_eh_timer_return rtn = BLK_EH_NOT_HANDLED; struct Scsi_Host *host = scmd->device->host; -- cgit v1.2.3-73-gaa49b