typedef struct _MMSESSION
{
    KGUARDED_MUTEX SystemSpaceViewLock;
    KGUARDED_MUTEX *SystemSpaceViewLockPointer;
    MMVIEW *SystemSpaceViewTable;
    unsigned long SystemSpaceHashSize;
    unsigned long SystemSpaceHashEntries;
    unsigned long SystemSpaceHashKey;
    unsigned long BitmapFailures;
} MMSESSION, *PMMSESSION;