IO_SQ_THREAD_SHOULD_STOP
return did_sig || test_bit(IO_SQ_THREAD_SHOULD_STOP, &sqd->state);
WARN_ON_ONCE(test_bit(IO_SQ_THREAD_SHOULD_STOP, &sqd->state));
set_bit(IO_SQ_THREAD_SHOULD_STOP, &sqd->state);