268     blk_unref(blk);  in test_drv_cb_drain_all()
275     blk_unref(blk);  in test_drv_cb_drain()
288     blk_unref(blk);  in test_drv_cb_co_drain_all()
301     blk_unref(blk);  in test_drv_cb_co_drain()
338     blk_unref(blk);  in test_quiesce_drain_all()
345     blk_unref(blk);  in test_quiesce_drain()
358     blk_unref(blk);  in test_quiesce_co_drain_all()
371     blk_unref(blk);  in test_quiesce_co_drain()
421     blk_unref(blk);  in test_nested()
459     blk_unref(blk_a);  in test_graph_change_drain_all()
478     blk_unref(blk_b);  in test_graph_change_drain_all()
610     blk_unref(blk);  in test_iothread_common()
886     blk_unref(blk_src);  in test_blockjob_common_drain_node()
887     blk_unref(blk_target);  in test_blockjob_common_drain_node()
1134         blk_unref(blk);  in do_test_delete_by_drain()
1342     blk_unref(blk);  in test_detach_indirect()
1401     blk_unref(blk);  in test_append_to_drained()
2064     blk_unref(parent_blk);  in do_test_replace_child_mid_drain()