VA_RDEV_TO_DEV     51 xfs/xfs_vfsops-common.c #define VA_RDEV_TO_DEV(x) udev2dev(x, 0) /* XXX what is the 0 */
VA_RDEV_TO_DEV     53 xfs/xfs_vfsops-common.c #define VA_RDEV_TO_DEV(x) x