IoFreeMdl

VOID *__stdcall IoFreeMdl(PMDL Mdl){
  __int16 MdlFlags; 
  __int64 AllocationProcessorNumber; 
  struct _KPRCB *CurrentPrcb; 
  _GENERAL_LOOKASIDE *P; 

  MdlFlags = Mdl->MdlFlags;
  if( (MdlFlags & 0x20) != 0 )
  {
    MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
    MdlFlags = Mdl->MdlFlags;
  }
  if( (MdlFlags & 8) == 0 )
    return ExFreePoolWithTag(Mdl, 0);
  AllocationProcessorNumber = Mdl->AllocationProcessorNumber;
  if( (unsigned int)AllocationProcessorNumber >= (unsigned int)KeNumberProcessors_0 )
  {
    CurrentPrcb = 0i64;
  }
  else
  {
    _mm_lfence();
    CurrentPrcb = *(&KiProcessorBlock + AllocationProcessorNumber);
  }
  if( !CurrentPrcb )
    CurrentPrcb = KeGetCurrentPrcb();
  P = CurrentPrcb->PPLookasideList[3].P;
  ++P->TotalFrees;
  if( LOWORD(P->ListHead.Alignment) < P->Depth )
    return RtlpInterlockedPushEntrySList(&P->ListHead, (PSLIST_ENTRY)Mdl);
  ++P->FreeMisses;
  P = CurrentPrcb->PPLookasideList[3].L;
  ++P->TotalFrees;
  if( LOWORD(P->ListHead.Alignment) < P->Depth )
    return RtlpInterlockedPushEntrySList(&P->ListHead, (PSLIST_ENTRY)Mdl);
  ++P->FreeMisses;
  return(VOID *)((__int64(__fastcall *)(PMDL))P->FreeEx)(Mdl);
}

Referenced by: