target/iblock: Use request_queue->nr_request for se_device defaults

This patch converts iblock_create_virtdevice() to use request_queue->nr_request
for se_dev_limits usage of ->hw_queue_depth and ->queue_depth for individual
struct se_device export.

It also removes the now unused defines for IBLOCK_DEVICE_QUEUE_DEPTH and
IBLOCK_MAX_DEVICE_QUEUE_DEPTH
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

drivers/target/target_core_iblock.c

@@ -164,8 +164,8 @@ static struct se_device *iblock_create_virtdevice(
 	limits->logical_block_size = bdev_logical_block_size(bd);
 	limits->max_hw_sectors = queue_max_hw_sectors(q);
 	limits->max_sectors = queue_max_sectors(q);
-	dev_limits.hw_queue_depth = IBLOCK_MAX_DEVICE_QUEUE_DEPTH;
-	dev_limits.queue_depth = IBLOCK_DEVICE_QUEUE_DEPTH;
+	dev_limits.hw_queue_depth = q->nr_requests;
+	dev_limits.queue_depth = q->nr_requests;
 
 	ib_dev->ibd_major = MAJOR(bd->bd_dev);
 	ib_dev->ibd_minor = MINOR(bd->bd_dev);

drivers/target/target_core_iblock.h

@@ -3,8 +3,6 @@
 
 #define IBLOCK_VERSION		"4.0"
 
-#define IBLOCK_DEVICE_QUEUE_DEPTH	32
-#define IBLOCK_MAX_DEVICE_QUEUE_DEPTH	128
 #define IBLOCK_MAX_CDBS		16
 #define IBLOCK_LBA_SHIFT	9