DD_IDLE_PRIO
[IOPRIO_CLASS_IDLE] = DD_IDLE_PRIO,
!!dd_queued(dd, DD_IDLE_PRIO);
DEADLINE_DEBUGFS_DDIR_ATTRS(DD_IDLE_PRIO, DD_READ, read2);
DEADLINE_DEBUGFS_DDIR_ATTRS(DD_IDLE_PRIO, DD_WRITE, write2);
idle = dd_queued(dd, DD_IDLE_PRIO);
idle = dd_owned_by_driver(dd, DD_IDLE_PRIO);