Symbol: nfsvno_deallocate
sys/fs/nfs/nfs_var.h
780
int nfsvno_deallocate(struct vnode *, off_t, off_t, struct ucred *,
sys/fs/nfsserver/nfs_nfsdserv.c
5897
nd->nd_repstat = nfsvno_deallocate(vp, off, len, nd->nd_cred,