diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index c79197edb163..aae1164e1ca9 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -2434,9 +2434,10 @@ vhost_scsi_ioctl(struct file *f,
 	default:
 		mutex_lock(&vs->dev.mutex);
 		r = vhost_dev_ioctl(&vs->dev, ioctl, argp);
-		/* TODO: flush backend after dev ioctl. */
 		if (r == -ENOIOCTLCMD)
 			r = vhost_vring_ioctl(&vs->dev, ioctl, argp);
+		else
+			vhost_scsi_flush(vs);
 		mutex_unlock(&vs->dev.mutex);
 		return r;
 	}