231     BlockDriverState *top = exclusive_writer_node("top");  in test_parallel_exclusive_write()  local
248     bdrv_attach_child(top, fl1, "backing", &child_of_bds,  in test_parallel_exclusive_write()
266     bdrv_unref(top);  in test_parallel_exclusive_write()
350     BlockDriverState *top = no_perm_node("top");  in test_parallel_perm_update()  local
367     bdrv_attach_child(top, ws, "file", &child_of_bds, BDRV_CHILD_DATA,  in test_parallel_perm_update()
386     bdrv_child_refresh_perms(top, top->children.lh_first, &error_abort);  in test_parallel_perm_update()
393     bdrv_child_refresh_perms(top, top->children.lh_first, &error_abort);  in test_parallel_perm_update()
400     bdrv_child_refresh_perms(top, top->children.lh_first, &error_abort);  in test_parallel_perm_update()
406     bdrv_unref(top);  in test_parallel_perm_update()
429     BlockDriverState *top = exclusive_writer_node("top");  in test_append_greedy_filter()  local
434     bdrv_attach_child(top, base, "backing", &child_of_bds,  in test_append_greedy_filter()
441     bdrv_unref(top);  in test_append_greedy_filter()