VFS_ROOT
if (VFS_ROOT(mp, &vp))
error = VFS_ROOT(mp, &vp);
if (VFS_ROOT(mp, &vp))
if ((error = VFS_ROOT(mp, &rootvp)) != 0) {
error = VFS_ROOT(mp, &tdp);
error = VFS_ROOT(mp, &vp);
if ((error = VFS_ROOT(mp, &rvp)))
if ((error = VFS_ROOT(synth_mp, &synth_vp))) {
if (VFS_ROOT(mp, &newdp))
error = VFS_ROOT(ip->pmp->mp, &vproot);
error = VFS_ROOT(ip->pmp->mp, &vproot);