typedef struct _MBCB
{
    short NodeTypeCode;
    short NodeIsInZone;
    unsigned long PagesToWrite;
    unsigned long DirtyPages;
    unsigned long Reserved;
    LIST_ENTRY BitmapRanges;
    __int64 ResumeWritePage;
    __int64 MostRecentlyDirtiedPage;
    BITMAP_RANGE BitmapRange1;
    BITMAP_RANGE BitmapRange2;
    BITMAP_RANGE BitmapRange3;
} MBCB, *PMBCB;