Pull virtio fixes from Michael Tsirkin:
"A couple of fixes that seem important enough to pick at the last
moment"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio-ring: fix DMA metadata flags
vduse: Fix race condition between resetting and irq injecting
vduse: Disallow injecting interrupt before DRIVER_OK is set