On Thu, 5 Sep 2019 20:27:36 +0800 From: Jason Wang <jasowang@xxxxxxxxxx> > > +static void vhost_set_map_dirty(struct vhost_virtqueue *vq, > + struct vhost_map *map, int index) > +{ > + struct vhost_uaddr *uaddr = &vq->uaddrs[index]; > + int i; > + > + if (uaddr->write) { > + for (i = 0; i < map->npages; i++) > + set_page_dirty(map->pages[i]); > + } Not sure need to set page dirty under page lock.