MiObtainFaultCharges

NTSTATUS __fastcall MiObtainFaultCharges(_MI_PARTITION *Partition, UINT64 NumberOfPages, CHAR a3){
  unsigned int v4; 
  struct _KPRCB *CurrentPrcb; 
  unsigned __int64 CachedResidentAvailable; 
  bool v8; 
  unsigned __int32 v9; 
  unsigned int v10; 
  UINT64 v12; 

  v4 = NumberOfPages;
  while( 1 )
  {
    if( Partition == &Irp )
    {
      CurrentPrcb = KeGetCurrentPrcb();
      CachedResidentAvailable = CurrentPrcb->CachedResidentAvailable;
      if( v4 <= CachedResidentAvailable )
      {
        do
        {
          if( (_DWORD)CachedResidentAvailable == -1 )
            break;
          v9 = _InterlockedCompareExchange(
                 (volatile signed __int32 *)&CurrentPrcb->CachedResidentAvailable,
                 CachedResidentAvailable - v4,
                 CachedResidentAvailable);
          v8 = (_DWORD)CachedResidentAvailable == v9;
          LODWORD(CachedResidentAvailable) = v9;
          if( v8 )
            goto LABEL_6;
        }
        while( v4 <= (unsigned __int64)v9 );
      }
    }
    v12 = 1i64;
    if( v4 != 1 )
      v12 = 1024i64;
    if( MiChargePartitionResidentAvailable(Partition, v4, v12) )
      break;
    v4 >>= 1;
    if( !v4 )
      goto LABEL_23;
  }
LABEL_6:
  if( v4 )
    goto LABEL_7;
LABEL_23:
  if( (a3 & 2) == 0 )
    return 0;
  v4 = 1;
  MiChargeResident((ULONG_PTR *)&Partition->Core.PartitionId, 1ui64, 0xFFFFFFFFui64);
LABEL_7:
  if( (a3 & 1) == 0 )
    return v4;
  v10 = v4;
  while( MiChargeCommit(Partition, v10, 1ui64) != 1 )
  {
    v10 >>= 1;
    if( !v10 )
    {
      if( (a3 & 2) != 0 )
      {
        v10 = 1;
        MiChargeCommit(Partition, 1ui64, 4ui64);
      }
      break;
    }
  }
  if( v10 != v4 )
    MiReturnFaultCharges(Partition, v4 - v10, 0i64);
  return v10;
}

Referenced by: