CMDQ_STAT_RUNNING
if (test_and_set_bit(CMDQ_STAT_RUNNING, &q->status) == 0) {
clear_bit(CMDQ_STAT_RUNNING, &cmdq->status);
set_bit(CMDQ_STAT_RUNNING, &cmdq->status);
if (test_and_set_bit(CMDQ_STAT_RUNNING, &q->status) == 0) {
if (test_and_set_bit(CMDQ_STAT_RUNNING, &q->status) == 0) {