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//0x4 bytes (sizeof)
struct _MMPAGE_FILE_EXPANSION_FLAGS
{
    UCHAR PageFileNumber:8;                                                 //0x0
    UCHAR Spare1:8;                                                         //0x1
    UCHAR Spare2:8;                                                         //0x2
    UCHAR IgnoreCurrentCommit:1;                                            //0x3
    UCHAR IncreaseMinimumSize:1;                                            //0x3
    UCHAR Spare3:6;                                                         //0x3
};