MiDeleteSegmentPages

UINT64 __stdcall MiDeleteSegmentPages(_CONTROL_AREA *ControlArea){
  _SUBSECTION *v1; 
  __int64 v2; 
  UINT64 v4; 
  __int64 v5; 
  __int64 v6; 
  int v7; 
  UINT64 v8; 
  unsigned __int64 v9; 
  INT64 CommittedPages; 
  unsigned __int64 v12; 
  struct _KPRCB *CurrentPrcb; 
  __int64 v14; 
  bool v15; 
  signed __int32 v16; 
  UINT64 DanglingPageCount; 
  __int64 v18; 
  v1 = (_SUBSECTION *)((char *)ControlArea + 128);
  v2 = *((_WORD *)ControlArea + 30) & 0x3FF;
  DanglingPageCount = 0i64;
  v4 = 0i64;
  v5 = *(_QWORD *)(qword_140C4E388 + 8 * v2);
  v6 = *(_QWORD *)ControlArea;
  v18 = v5;
  v7 = *(_DWORD *)(v6 + 12);
  while( v1 )
  {
    v8 = MiDeleteSubsectionPages(v1, &DanglingPageCount);
    v1 = (_SUBSECTION *)*((_QWORD *)v1 + 2);
    v4 += v8;
  }
  v9 = ExAcquireSpinLockExclusive((PEX_SPIN_LOCK)ControlArea + 18);
  if( *((_QWORD *)ControlArea + 4) )
  {
    do
    {
      ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)ControlArea + 9);
      __writecr8(v9);
      _mm_pause();
      ExAcquireSpinLockExclusive((PEX_SPIN_LOCK)ControlArea + 18);
    }
    while( *((_QWORD *)ControlArea + 4) );
    v5 = v18;
  }
  ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)ControlArea + 9);
  __writecr8(v9);
  CommittedPages = MiGetCommittedPages(ControlArea);
  if( CommittedPages )
  {
    if( (v7 & 0x1000) != 0 )
    {
      v12 = CommittedPages - DanglingPageCount;
      if( (ULONG_PTR *)v5 == &MiSystemPartition )
      {
        CurrentPrcb = KeGetCurrentPrcb();
        v14 = *((int *)CurrentPrcb + 8391);
        if( (_DWORD)v14 != -1 )
        {
          if( v12 + v14 <= 0x100 )
          {
            do
            {
              if( v12 >= 0x80000 )
                break;
              v16 = _InterlockedCompareExchange((volatile signed __int32 *)CurrentPrcb + 8391, v14 + v12, v14);
              v15 = (_DWORD)v14 == v16;
              LODWORD(v14) = v16;
              if( v15 )
                goto LABEL_7;
            }
            while( v16 != -1 && v12 + v16 <= 0x100 );
          }
          if( (int)v14 > 192
            && (_DWORD)v14 != -1
            && (_DWORD)v14 == _InterlockedCompareExchange((volatile signed __int32 *)CurrentPrcb + 8391, 192, v14) )
          {
            v12 += (int)v14 - 192;
          }
        }
      }
      if( v12 )
        _InterlockedExchangeAdd64((volatile signed __int64 *)(v5 + 7168), v12);
    }
LABEL_7:
    MiReturnCommit((_MI_PARTITION *)v5, CommittedPages - DanglingPageCount);
    _InterlockedExchangeAdd64((volatile signed __int64 *)(v5 + 7624), -CommittedPages);
  }
  return v4;
}

Referenced by: