virtio-blk: Remove the stale FIXME comment

By default, we have ioeventfd enabled, so the IO request processing is
in IO thread; in the vcpu thread, guest mode is returned to as quickly
as possible, and completion is delivered via irqfd. Therefore this
comment from the initial implementation is barely relevant.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index 2acfef8..0468297 100644 (file)
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -597,12 +597,6 @@ static void virtio_blk_handle_output(VirtIODevice *vdev, VirtQueue *vq)
     if (mrb.num_reqs) {
         virtio_blk_submit_multireq(s->blk, &mrb);
     }
-
-    /*
-     * FIXME: Want to check for completions before returning to guest mode,
-     * so cached reads and writes are reported as quickly as possible. But
-     * that should be done in the generic block layer.
-     */
 }
 
 static void virtio_blk_dma_restart_bh(void *opaque)