KeAbProcessBaseIoPriorityChange

VOID __stdcall KeAbProcessBaseIoPriorityChange(
        _ETHREAD *Thread,
        _IO_PRIORITY_HINT OldPriority,
        _IO_PRIORITY_HINT NewPriority){
  UINT64 v4; 
  _BOOL8 v5; 

  v4 = 0i64;
  if( NewPriority >= IoPriorityNormal )
  {
    if( OldPriority >= IoPriorityNormal )
      return;
    v4 = 1i64;
    LODWORD(v5) = 1;
  }
  else
  {
    v5 = OldPriority >= IoPriorityNormal;
  }
  if( v5 )
    KeAbProcessBaseIoPriorityChangeInternal(&Thread->Tcb, v4);
}

Referenced by:

PsSetIoPriorityThread
PspNotifyProcessBackgroundTransition