block: introduce blk_rq_is_passthrough

This can be used to check for fs vs non-fs requests and basically
removes all knowledge of BLOCK_PC specific from the block layer,
as well as preparing for removing the cmd_type field in struct request.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 18 insertions, 18 deletions

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index b93bb73..53dc297 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -1854,7 +1854,7 @@ static void cciss_softirq_done(struct request *rq)
 	dev_dbg(&h->pdev->dev, "Done with %p\n", rq);
 
 	/* set the residual count for pc requests */
-	if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
+	if (blk_rq_is_passthrough(rq))
 		scsi_req(rq)->resid_len = c->err_info->ResidualCnt;
 
 	blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO);
@@ -3083,7 +3083,7 @@ static inline int evaluate_target_status(ctlr_info_t *h,
 	driver_byte = DRIVER_OK;
 	msg_byte = cmd->err_info->CommandStatus; /* correct?  seems too device specific */
 
-	if (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC)
+	if (blk_rq_is_passthrough(cmd->rq))
 		host_byte = DID_PASSTHROUGH;
 	else
 		host_byte = DID_OK;
@@ -3092,7 +3092,7 @@ static inline int evaluate_target_status(ctlr_info_t *h,
 		host_byte, driver_byte);
 
 	if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) {
-		if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC)
+		if (!blk_rq_is_passthrough(cmd->rq))
 			dev_warn(&h->pdev->dev, "cmd %p "
 			       "has SCSI Status 0x%x\n",
 			       cmd, cmd->err_info->ScsiStatus);
@@ -3103,16 +3103,16 @@ static inline int evaluate_target_status(ctlr_info_t *h,
 	sense_key = 0xf & cmd->err_info->SenseInfo[2];
 	/* no status or recovered error */
 	if (((sense_key == 0x0) || (sense_key == 0x1)) &&
-	    (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC))
+	    !blk_rq_is_passthrough(cmd->rq))
 		error_value = 0;
 
 	if (check_for_unit_attention(h, cmd)) {
-		*retry_cmd = !(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC);
+		*retry_cmd = !blk_rq_is_passthrough(cmd->rq);
 		return 0;
 	}
 
 	/* Not SG_IO or similar? */
-	if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) {
+	if (!blk_rq_is_passthrough(cmd->rq)) {
 		if (error_value != 0)
 			dev_warn(&h->pdev->dev, "cmd %p has CHECK CONDITION"
 			       " sense key = 0x%x\n", cmd, sense_key);
@@ -3146,14 +3146,14 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
 		rq->errors = evaluate_target_status(h, cmd, &retry_cmd);
 		break;
 	case CMD_DATA_UNDERRUN:
-		if (cmd->rq->cmd_type == REQ_TYPE_FS) {
+		if (!blk_rq_is_passthrough(cmd->rq)) {
 			dev_warn(&h->pdev->dev, "cmd %p has"
 			       " completed with data underrun "
 			       "reported\n", cmd);
 		}
 		break;
 	case CMD_DATA_OVERRUN:
-		if (cmd->rq->cmd_type == REQ_TYPE_FS)
+		if (!blk_rq_is_passthrough(cmd->rq))
 			dev_warn(&h->pdev->dev, "cciss: cmd %p has"
 			       " completed with data overrun "
 			       "reported\n", cmd);
@@ -3163,7 +3163,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
 		       "reported invalid\n", cmd);
 		rq->errors = make_status_bytes(SAM_STAT_GOOD,
 			cmd->err_info->CommandStatus, DRIVER_OK,
-			(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+			blk_rq_is_passthrough(cmd->rq) ?
 				DID_PASSTHROUGH : DID_ERROR);
 		break;
 	case CMD_PROTOCOL_ERR:
@@ -3171,7 +3171,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
 		       "protocol error\n", cmd);
 		rq->errors = make_status_bytes(SAM_STAT_GOOD,
 			cmd->err_info->CommandStatus, DRIVER_OK,
-			(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+			blk_rq_is_passthrough(cmd->rq) ?
 				DID_PASSTHROUGH : DID_ERROR);
 		break;
 	case CMD_HARDWARE_ERR:
@@ -3179,7 +3179,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
 		       " hardware error\n", cmd);
 		rq->errors = make_status_bytes(SAM_STAT_GOOD,
 			cmd->err_info->CommandStatus, DRIVER_OK,
-			(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+			blk_rq_is_passthrough(cmd->rq) ?
 				DID_PASSTHROUGH : DID_ERROR);
 		break;
 	case CMD_CONNECTION_LOST:
@@ -3187,7 +3187,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
 		       "connection lost\n", cmd);
 		rq->errors = make_status_bytes(SAM_STAT_GOOD,
 			cmd->err_info->CommandStatus, DRIVER_OK,
-			(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+			blk_rq_is_passthrough(cmd->rq) ?
 				DID_PASSTHROUGH : DID_ERROR);
 		break;
 	case CMD_ABORTED:
@@ -3195,7 +3195,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
 		       "aborted\n", cmd);
 		rq->errors = make_status_bytes(SAM_STAT_GOOD,
 			cmd->err_info->CommandStatus, DRIVER_OK,
-			(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+			blk_rq_is_passthrough(cmd->rq) ?
 				DID_PASSTHROUGH : DID_ABORT);
 		break;
 	case CMD_ABORT_FAILED:
@@ -3203,7 +3203,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
 		       "abort failed\n", cmd);
 		rq->errors = make_status_bytes(SAM_STAT_GOOD,
 			cmd->err_info->CommandStatus, DRIVER_OK,
-			(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+			blk_rq_is_passthrough(cmd->rq) ?
 				DID_PASSTHROUGH : DID_ERROR);
 		break;
 	case CMD_UNSOLICITED_ABORT:
@@ -3218,21 +3218,21 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
 				"%p retried too many times\n", cmd);
 		rq->errors = make_status_bytes(SAM_STAT_GOOD,
 			cmd->err_info->CommandStatus, DRIVER_OK,
-			(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+			blk_rq_is_passthrough(cmd->rq) ?
 				DID_PASSTHROUGH : DID_ABORT);
 		break;
 	case CMD_TIMEOUT:
 		dev_warn(&h->pdev->dev, "cmd %p timedout\n", cmd);
 		rq->errors = make_status_bytes(SAM_STAT_GOOD,
 			cmd->err_info->CommandStatus, DRIVER_OK,
-			(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+			blk_rq_is_passthrough(cmd->rq) ?
 				DID_PASSTHROUGH : DID_ERROR);
 		break;
 	case CMD_UNABORTABLE:
 		dev_warn(&h->pdev->dev, "cmd %p unabortable\n", cmd);
 		rq->errors = make_status_bytes(SAM_STAT_GOOD,
 			cmd->err_info->CommandStatus, DRIVER_OK,
-			cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC ?
+			blk_rq_is_passthrough(cmd->rq) ?
 				DID_PASSTHROUGH : DID_ERROR);
 		break;
 	default:
@@ -3241,7 +3241,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
 		       cmd->err_info->CommandStatus);
 		rq->errors = make_status_bytes(SAM_STAT_GOOD,
 			cmd->err_info->CommandStatus, DRIVER_OK,
-			(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+			blk_rq_is_passthrough(cmd->rq) ?
 				DID_PASSTHROUGH : DID_ERROR);
 	}