block: Rename blk_queue_max_sectors to blk_queue_max_hw_sectors

The block layer calling convention is blk_queue_<limit name>.
blk_queue_max_sectors predates this practice, leading to some confusion.
Rename the function to appropriately reflect that its intended use is to
set max_hw_sectors.

Also introduce a temporary wrapper for backwards compability.  This can
be removed after the merge window is closed.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 9e52d16..032f0d0 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -3674,7 +3674,7 @@
 		if (ipr_is_vset_device(res)) {
 			blk_queue_rq_timeout(sdev->request_queue,
 					     IPR_VSET_RW_TIMEOUT);
-			blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
+			blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
 		}
 		if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
 			sdev->allow_restart = 1;
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index b6f1ef9..9b1c143 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -235,7 +235,7 @@
 		scsi_dev->allow_restart = 1;
 		blk_queue_rq_timeout(scsi_dev->request_queue,
 				     PMCRAID_VSET_IO_TIMEOUT);
-		blk_queue_max_sectors(scsi_dev->request_queue,
+		blk_queue_max_hw_sectors(scsi_dev->request_queue,
 				      PMCRAID_VSET_MAX_SECTORS);
 	}
 
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index c664242..ac3cca7 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1627,7 +1627,7 @@
 	blk_queue_max_hw_segments(q, shost->sg_tablesize);
 	blk_queue_max_phys_segments(q, SCSI_MAX_SG_CHAIN_SEGMENTS);
 
-	blk_queue_max_sectors(q, shost->max_sectors);
+	blk_queue_max_hw_sectors(q, shost->max_sectors);
 	blk_queue_bounce_limit(q, scsi_calculate_bounce_limit(shost));
 	blk_queue_segment_boundary(q, shost->dma_boundary);
 	dma_set_seg_boundary(dev, shost->dma_boundary);
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 012f73a..5d9b513 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -879,7 +879,7 @@
 	 * broken RA4x00 Compaq Disk Array
 	 */
 	if (*bflags & BLIST_MAX_512)
-		blk_queue_max_sectors(sdev->request_queue, 512);
+		blk_queue_max_hw_sectors(sdev->request_queue, 512);
 
 	/*
 	 * Some devices may not want to have a start command automatically