MirrorBlockJob *s = container_of(job, MirrorBlockJob, common);
int ret;
- ret = bdrv_open_backing_file(s->target);
+ ret = bdrv_open_backing_file(s->target, NULL);
if (ret < 0) {
char backing_filename[PATH_MAX];
bdrv_get_full_backing_filename(s->target, backing_filename,