MiIssuePageExtendRequest

VOID __fastcall MiIssuePageExtendRequest(
        _MI_PARTITION *Partition,
        UINT64 QuotaCharge,
        UINT64 PageFileNumber,
        UINT64 IncreaseMinimumSize){
  char v5; 
  volatile unsigned int v7; 
  _ETHREAD *CurrentThread; 
  int v9; 
  int v10; 
  __int64 *v11; 
  int v12; 
  char v13; 
  UINT64 v14; 
  __int64 *v15; 
  volatile unsigned int NumberOfPagingFiles; 
  char v17; 
  volatile unsigned int v18; 
  _MMPAGING_FILE **PagingFile; 
  char v20; 
  char v21; 
  char v22; 
  unsigned __int64 v23; 
  __int64 v24; 
  __int64 v25; 
  __int64 **v26; 
  __int64 v27[12]; 

  v5 = PageFileNumber;
  v7 = IncreaseMinimumSize;
  memset(v27, 0i64, 0x58u);
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  v9 = v5 & 8;
  if( (v5 & 8) != 0 && !Partition->Segments.SegmentDereferenceThreadExists )
    return;
  v10 = v5 & 2;
  if( (v5 & 2) != 0 )
  {
    v11 = (__int64 *)((char *)Partition + (v9 != 0 ? 1432i64 : 440i64));
    if( _InterlockedCompareExchange((volatile signed __int32 *)v11 + 18, 1, 0) )
      return;
    v12 = *((unsigned __int8 *)v11 + 79);
    QuotaCharge = (QuotaCharge + 4095) & 0xFFFFFFFFFFFFF000ui64;
    if( (v5 & 4) != 0 )
      v13 = v12 | 1;
    else
      v13 = v12 & 0xFE;
    *((_BYTE *)v11 + 79) = v13;
    v14 = 0i64;
    v15 = 0i64;
    goto LABEL_27;
  }
  if( CurrentThread->Win32StartAddress == MiDereferenceSegmentThread || KeGetCurrentIrql() >= 2u )
    return;
  if( (v5 & 8) != 0 )
    QuotaCharge = (QuotaCharge + 0xFFFF) & 0xFFFFFFFFFFFF0000ui64;
  NumberOfPagingFiles = Partition->Vp.NumberOfPagingFiles;
  v11 = v27;
  LODWORD(v27[9]) = 1;
  v27[0] = 0i64;
  BYTE4(v27[9]) = v7;
  if( (v5 & 1) != 0 )
    v17 = HIBYTE(v27[9]) & 0xE8 | 2;
  else
    v17 = HIBYTE(v27[9]) & 0xE8;
  HIBYTE(v27[9]) = v17;
  v27[8] = (__int64)&v27[7];
  v27[7] = (__int64)&v27[7];
  LOWORD(v27[6]) = 0;
  BYTE2(v27[6]) = 6;
  HIDWORD(v27[6]) = 0;
  if( (v5 & 8) != 0 )
  {
    v15 = &MiOneSecond;
LABEL_26:
    v14 = 1i64;
LABEL_27:
    v20 = *((_BYTE *)v11 + 79);
    if( v9 )
      v21 = v20 | 8;
    else
      v21 = v20 & 0xF7;
    *((_BYTE *)v11 + 79) = v21;
    v11[5] = 0i64;
    v11[10] = 0i64;
    v22 = *((_BYTE *)v11 + 79);
    v11[4] = QuotaCharge;
    v11[3] = (__int64)Partition;
    *((_BYTE *)v11 + 79) = v22 & 0xDF | (&MiOneSecond != v15 ? 0x20 : 0);
    MiQueuePageFileExtension((_MMPAGE_FILE_EXPANSION *)v11, v14);
    if( !v10 && KeWaitForSingleObject((UINT64)(v11 + 6), 0, 0, 0, (INT64)v15) == 258 )
    {
      v23 = (unsigned __int8)ExAcquireSpinLockExclusive((INT64 *)&Partition->Segments.SegmentListLock);
      if( !*((_DWORD *)v11 + 13) )
      {
        v24 = v11[10];
        if( v24 )
        {
          *(_QWORD *)(v24 + 80) = 0i64;
        }
        else
        {
          v25 = v11[1];
          v26 = (__int64 **)v11[2];
          if( *(__int64 **)(v25 + 8) != v11 + 1 || *v26 != v11 + 1 )
            __fastfail(3u);
          *v26 = (__int64 *)v25;
          *(_QWORD *)(v25 + 8) = v26;
        }
        v11[5] = 0i64;
      }
      ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)&Partition->Segments.SegmentListLock);
      __writecr8(v23);
    }
    return;
  }
  if( v7 < NumberOfPagingFiles )
  {
    v15 = 0i64;
    goto LABEL_26;
  }
  v15 = &MiOneSecond;
  v18 = 0;
  if( NumberOfPagingFiles )
  {
    PagingFile = Partition->Vp.PagingFile;
    do
    {
      if( ((*PagingFile)->_bf_cc & 0x50) == 0 && (*PagingFile)->Size < (*PagingFile)->MaximumSize )
        break;
      ++v18;
      ++PagingFile;
    }
    while( v18 < NumberOfPagingFiles );
  }
  if( v18 != NumberOfPagingFiles )
    goto LABEL_26;
}

Referenced by: