NVMe: Rename nr_queues to nr_io_queues

I got confused about whether this included the admin queue or not, and
had to resort to reading the spec.  It doesn't include the admin queue,
so make that clear in the name.
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

drivers/block/nvme.c

@@ -1202,29 +1202,30 @@ static int set_queue_count(struct nvme_dev *dev, int count)
 
 static int __devinit nvme_setup_io_queues(struct nvme_dev *dev)
 {
-	int result, cpu, i, nr_queues;
+	int result, cpu, i, nr_io_queues;
 
-	nr_queues = num_online_cpus();
-	result = set_queue_count(dev, nr_queues);
+	nr_io_queues = num_online_cpus();
+	result = set_queue_count(dev, nr_io_queues);
 	if (result < 0)
 		return result;
-	if (result < nr_queues)
-		nr_queues = result;
+	if (result < nr_io_queues)
+		nr_io_queues = result;
 
 	/* Deregister the admin queue's interrupt */
 	free_irq(dev->entry[0].vector, dev->queues[0]);
 
-	for (i = 0; i < nr_queues; i++)
+	for (i = 0; i < nr_io_queues; i++)
 		dev->entry[i].entry = i;
 	for (;;) {
-		result = pci_enable_msix(dev->pci_dev, dev->entry, nr_queues);
+		result = pci_enable_msix(dev->pci_dev, dev->entry,
+								nr_io_queues);
 		if (result == 0) {
 			break;
 		} else if (result > 0) {
-			nr_queues = result;
+			nr_io_queues = result;
 			continue;
 		} else {
-			nr_queues = 1;
+			nr_io_queues = 1;
 			break;
 		}
 	}
@@ -1233,12 +1234,12 @@ static int __devinit nvme_setup_io_queues(struct nvme_dev *dev)
 	/* XXX: handle failure here */
 
 	cpu = cpumask_first(cpu_online_mask);
-	for (i = 0; i < nr_queues; i++) {
+	for (i = 0; i < nr_io_queues; i++) {
 		irq_set_affinity_hint(dev->entry[i].vector, get_cpu_mask(cpu));
 		cpu = cpumask_next(cpu, cpu_online_mask);
 	}
 
-	for (i = 0; i < nr_queues; i++) {
+	for (i = 0; i < nr_io_queues; i++) {
 		dev->queues[i + 1] = nvme_create_queue(dev, i + 1,
 							NVME_Q_DEPTH, i);
 		if (!dev->queues[i + 1])