MiReturnResident

NTSTATUS __stdcall MiReturnResident(INT64 a1, UINT64 a2){
  _MI_PARTITION *v2; 
  struct _KPRCB *CurrentPrcb; 
  __int64 CachedResidentAvailable; 
  bool v5; 

  v2 = &Irp;
  if( (_MI_PARTITION *)a1 == &Irp )
  {
    CurrentPrcb = KeGetCurrentPrcb();
    CachedResidentAvailable = (int)CurrentPrcb->CachedResidentAvailable;
    if( (_DWORD)CachedResidentAvailable != -1 )
    {
      for( ; a2 + CachedResidentAvailable <= 0x100; LODWORD(v2) = a2 + (_DWORD)v2 )
      {
        if( a2 >= 0x80000 )
          break;
        LODWORD(v2) = _InterlockedCompareExchange(
                        (volatile signed __int32 *)&CurrentPrcb->CachedResidentAvailable,
                        CachedResidentAvailable + a2,
                        CachedResidentAvailable);
        v5 = (_DWORD)CachedResidentAvailable == (_DWORD)v2;
        CachedResidentAvailable = (int)v2;
        if( v5 )
          return(int)v2;
        if( (_DWORD)v2 == -1 )
          break;
      }
      if( (int)CachedResidentAvailable > 192 && (_DWORD)CachedResidentAvailable != -1 )
      {
        LODWORD(v2) = _InterlockedCompareExchange(
                        (volatile signed __int32 *)&CurrentPrcb->CachedResidentAvailable,
                        192,
                        CachedResidentAvailable);
        if( (_DWORD)CachedResidentAvailable == (_DWORD)v2 )
        {
          LODWORD(v2) = CachedResidentAvailable - 192;
          a2 += (int)CachedResidentAvailable - 192;
        }
      }
    }
  }
  if( a2 )
    _InterlockedExchangeAdd64((volatile signed __int64 *)(a1 + 7168), a2);
  return(int)v2;
}

Referenced by: