Constant IOPRIO_CLASS_NONE

pub const IOPRIO_CLASS_NONE: i32 = 0;

Available on crate feature dep_nc only.

These are the io priority groups as implemented by CFQ.

RT is the realtime class, it always gets premium service. BE is the best-effort scheduling class, the default for any process. IDLE is the idle scheduling class, it is only served when no one else is using the disk.