xfs_fsop_geom_v1  777 fs/xfs/libxfs/xfs_fs.h #define XFS_IOC_FSGEOMETRY_V1	     _IOR ('X', 100, struct xfs_fsop_geom_v1)
xfs_fsop_geom_v1 1020 fs/xfs/xfs_ioctl.c 		len = sizeof(struct xfs_fsop_geom_v1);