scsi: use host wide tags by default

This patch changes the !blk-mq path to the same defaults as the blk-mq
I/O path by always enabling block tagging, and always using host wide
tags.  We've had blk-mq available for a few releases so bugs with
this mode should have been ironed out, and this ensures we get better
coverage of over tagging setup over different configs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>

drivers/scsi/fnic/fnic_main.c

@@ -118,7 +118,6 @@ static struct scsi_host_template fnic_host_template = {
 	.sg_tablesize = FNIC_MAX_SG_DESC_CNT,
 	.max_sectors = 0xffff,
 	.shost_attrs = fnic_attrs,
-	.use_blk_tags = 1,
 	.track_queue_depth = 1,
 };
 
@@ -697,13 +696,6 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	}
 	fnic->fnic_max_tag_id = host->can_queue;
 
-	err = scsi_init_shared_tag_map(host, fnic->fnic_max_tag_id);
-	if (err) {
-		shost_printk(KERN_ERR, fnic->lport->host,
-			  "Unable to alloc shared tag map\n");
-		goto err_out_dev_close;
-	}
-
 	host->max_lun = fnic->config.luns_per_tgt;
 	host->max_id = FNIC_MAX_FCP_TARGET;
 	host->max_cmd_len = FCOE_MAX_CMD_LEN;