leVCN             749 fs/ntfs/layout.h /* 16*/			leVCN lowest_vcn;/* Lowest valid virtual cluster number
leVCN             754 fs/ntfs/layout.h /* 24*/			leVCN highest_vcn;/* Highest valid vcn of this extent of
leVCN             992 fs/ntfs/layout.h /*  8*/	leVCN lowest_vcn;	/* Lowest virtual cluster number of this portion
leVCN            2071 fs/ntfs/layout.h /* 16*/	leVCN index_block_vcn;	/* Virtual cluster number of the index block.