vfs_fhtovp
if (vfsops->vfs_fhtovp == NULL) {
vfsops->vfs_fhtovp = vfs_stdfhtovp;
error = (mp->mnt_op->vfs_fhtovp)(mp, rootvp, fhp, vpp);
int vfs_fhtovp(struct mount *mp, struct vnode *rootvp,
vfs_fhtovp_t *vfs_fhtovp;
vfs_fhtovp(MP, ROOTVP, FIDP, VPP)
.vfs_fhtovp = devfs_vfs_fhtovp,
.vfs_fhtovp = dirfs_fhtovp,
.vfs_fhtovp = ext2_fhtovp,
.vfs_fhtovp = hammer_vfs_fhtovp,
.vfs_fhtovp = hammer2_vfs_fhtovp,
.vfs_fhtovp = hpfs_fhtovp,
.vfs_fhtovp = cd9660_fhtovp,
.vfs_fhtovp = ffs_fhtovp,
.vfs_fhtovp = msdosfs_fhtovp,
.vfs_fhtovp = ntfs_fhtovp,
.vfs_fhtovp = nullfs_fhtovp,
.vfs_fhtovp = tmpfs_fhtovp,
.vfs_fhtovp = udf_fhtovp,
.vfs_fhtovp = ffs_fhtovp,