Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:

 - new vdpa features to allow creation and deletion of new devices

 - virtio-blk support per-device queue depth

 - fixes, cleanups all over the place

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (31 commits)
  virtio-input: add multi-touch support
  virtio_mmio: fix one typo
  vdpa/mlx5: fix param validation in mlx5_vdpa_get_config()
  virtio_net: Fix fall-through warnings for Clang
  virtio_input: Prevent EV_MSC/MSC_TIMESTAMP loop storm for MT.
  virtio-blk: support per-device queue depth
  virtio_vdpa: don't warn when fail to disable vq
  virtio-pci: introduce modern device module
  virito-pci-modern: rename map_capability() to vp_modern_map_capability()
  virtio-pci-modern: introduce helper to get notification offset
  virtio-pci-modern: introduce helper for getting queue nums
  virtio-pci-modern: introduce helper for setting/geting queue size
  virtio-pci-modern: introduce helper to set/get queue_enable
  virtio-pci-modern: introduce vp_modern_queue_address()
  virtio-pci-modern: introduce vp_modern_set_queue_vector()
  virtio-pci-modern: introduce vp_modern_generation()
  virtio-pci-modern: introduce helpers for setting and getting features
  virtio-pci-modern: introduce helpers for setting and getting status
  virtio-pci-modern: introduce helper to set config vector
  virtio-pci-modern: introduce vp_modern_remove()
  ...

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index b0285db7cf4f..b9fa3ef5b57c 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -705,6 +705,7 @@ static int virtblk_probe(struct virtio_device *vdev)
 	u32 v, blk_size, max_size, sg_elems, opt_io_size;
 	u16 min_io_size;
 	u8 physical_block_exp, alignment_offset;
+	unsigned int queue_depth;
 
 	if (!vdev->config->get) {
 		dev_err(&vdev->dev, "%s failure: config access disabled\n",
@@ -756,16 +757,18 @@ static int virtblk_probe(struct virtio_device *vdev)
 	}
 
 	/* Default queue sizing is to fill the ring. */
-	if (!virtblk_queue_depth) {
-		virtblk_queue_depth = vblk->vqs[0].vq->num_free;
+	if (likely(!virtblk_queue_depth)) {
+		queue_depth = vblk->vqs[0].vq->num_free;
 		/* ... but without indirect descs, we use 2 descs per req */
 		if (!virtio_has_feature(vdev, VIRTIO_RING_F_INDIRECT_DESC))
-			virtblk_queue_depth /= 2;
+			queue_depth /= 2;
+	} else {
+		queue_depth = virtblk_queue_depth;
 	}
 
 	memset(&vblk->tag_set, 0, sizeof(vblk->tag_set));
 	vblk->tag_set.ops = &virtio_mq_ops;
-	vblk->tag_set.queue_depth = virtblk_queue_depth;
+	vblk->tag_set.queue_depth = queue_depth;
 	vblk->tag_set.numa_node = NUMA_NO_NODE;
 	vblk->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
 	vblk->tag_set.cmd_size =