MiFindLastSubsection

_SUBSECTION *__stdcall MiFindLastSubsection(_CONTROL_AREA *ControlArea, UINT64 ControlAreaLockHeld){
  unsigned __int8 v3; 
  __int64 v4; 
  __int64 v5; 
  _SUBSECTION *v6; 

  if( (_DWORD)ControlAreaLockHeld == 1 )
    v3 = 17;
  else
    v3 = ExAcquireSpinLockShared((INT64 *)&ControlArea->ControlAreaLock);
  v4 = *(_QWORD *)&ControlArea[2].gap8[8];
  v5 = 0i64;
  while( v4 )
  {
    v5 = v4;
    v4 = *(_QWORD *)(v4 + 8);
  }
  v6 = (_SUBSECTION *)(v5 - 56);
  if( v3 != 17 )
  {
    ExReleaseSpinLockSharedFromDpcLevel(&ControlArea->ControlAreaLock);
    __writecr8(v3);
  }
  return v6;
}

Referenced by:

MiCanFileBeTruncatedInternal
MiComputeDataFlushRange
MiGetControlAreaPtes
MmExtendSection
MmFlushVirtualMemory