XFS_BB_NUM_BITS  1557 fs/xfs/libxfs/xfs_btree.c 			nbits = XFS_BB_NUM_BITS;
XFS_BB_NUM_BITS    81 fs/xfs/libxfs/xfs_btree.h #define	XFS_BB_ALL_BITS		((1 << XFS_BB_NUM_BITS) - 1)