diff --git a/sys/cddl/compat/opensolaris/sys/vnode.h b/sys/cddl/compat/opensolaris/sys/vnode.h
index 7611a3f82011..7296635cc15b 100644
--- a/sys/cddl/compat/opensolaris/sys/vnode.h
+++ b/sys/cddl/compat/opensolaris/sys/vnode.h
@@ -57,6 +57,8 @@ typedef	struct vop_vector	vnodeops_t;
 
 #define	v_count	v_usecount
 
+#define	V_APPEND	VAPPEND
+
 static __inline int
 vn_is_readonly(vnode_t *vp)
 {
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_replay.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_replay.c
index 573a82c98e19..658e53998c9c 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_replay.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_replay.c
@@ -60,10 +60,14 @@ zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode,
 {
 	VATTR_NULL(vap);
 	vap->va_mask = (uint_t)mask;
-	vap->va_type = IFTOVT(mode);
-	vap->va_mode = mode & MODEMASK;
-	vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid;
-	vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid;
+	if (mask & AT_TYPE)
+		vap->va_type = IFTOVT(mode);
+	if (mask & AT_MODE)
+		vap->va_mode = mode & MODEMASK;
+	if (mask & AT_UID)
+		vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid;
+	if (mask & AT_GID)
+		vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid;
 	vap->va_rdev = zfs_cmpldev(rdev);
 	vap->va_nodeid = nodeid;
 }
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
index a58f76e4b8d2..564871f69293 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
@@ -3981,21 +3981,33 @@ zfs_freebsd_access(ap)
 		struct thread *a_td;
 	} */ *ap;
 {
+	accmode_t accmode;
+	int error = 0;
 
 	/*
-	 * ZFS itself only knowns about VREAD, VWRITE and VEXEC, the rest
-	 * we have to handle by calling vaccess().
+	 * ZFS itself only knowns about VREAD, VWRITE, VEXEC and VAPPEND,
 	 */
-	if ((ap->a_accmode & ~(VREAD|VWRITE|VEXEC)) != 0) {
-		vnode_t *vp = ap->a_vp;
-		znode_t *zp = VTOZ(vp);
-		znode_phys_t *zphys = zp->z_phys;
+	accmode = ap->a_accmode & (VREAD|VWRITE|VEXEC|VAPPEND);
+	if (accmode != 0)
+		error = zfs_access(ap->a_vp, accmode, 0, ap->a_cred, NULL);
 
-		return (vaccess(vp->v_type, zphys->zp_mode, zphys->zp_uid,
-		    zphys->zp_gid, ap->a_accmode, ap->a_cred, NULL));
+	/*
+	 * VADMIN has to be handled by vaccess().
+	 */
+	if (error == 0) {
+		accmode = ap->a_accmode & ~(VREAD|VWRITE|VEXEC|VAPPEND);
+		if (accmode != 0) {
+			vnode_t *vp = ap->a_vp;
+			znode_t *zp = VTOZ(vp);
+			znode_phys_t *zphys = zp->z_phys;
+
+			error = vaccess(vp->v_type, zphys->zp_mode,
+			    zphys->zp_uid, zphys->zp_gid, accmode, ap->a_cred,
+			    NULL);
+		}
 	}
 
-	return (zfs_access(ap->a_vp, ap->a_accmode, 0, ap->a_cred, NULL));
+	return (error);
 }
 
 static int
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c
index c43a8500818a..7157930f729b 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c
@@ -143,16 +143,19 @@ zfs_znode_cache_constructor(void *buf, void *arg, int kmflags)
 
 	POINTER_INVALIDATE(&zp->z_zfsvfs);
 	ASSERT(!POINTER_IS_VALID(zp->z_zfsvfs));
-	ASSERT(vfsp != NULL);
 
-	error = getnewvnode("zfs", vfsp, &zfs_vnodeops, &vp);
-	if (error != 0 && (kmflags & KM_NOSLEEP))
-		return (-1);
-	ASSERT(error == 0);
-	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
-	zp->z_vnode = vp;
-	vp->v_data = (caddr_t)zp;
-	VN_LOCK_AREC(vp);
+	if (vfsp != NULL) {
+		error = getnewvnode("zfs", vfsp, &zfs_vnodeops, &vp);
+		if (error != 0 && (kmflags & KM_NOSLEEP))
+			return (-1);
+		ASSERT(error == 0);
+		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
+		zp->z_vnode = vp;
+		vp->v_data = (caddr_t)zp;
+		VN_LOCK_AREC(vp);
+	} else {
+		zp->z_vnode = NULL;
+	}
 
 	list_link_init(&zp->z_link_node);
 
@@ -1435,7 +1438,7 @@ zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx)
 	nvpair_t	*elem;
 	int		error;
 	znode_t		*rootzp = NULL;
-	vnode_t		*vp;
+	vnode_t		vnode;
 	vattr_t		vattr;
 	znode_t		*zp;
 
@@ -1504,13 +1507,13 @@ zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx)
 	vattr.va_gid = crgetgid(cr);
 
 	rootzp = kmem_cache_alloc(znode_cache, KM_SLEEP);
-	zfs_znode_cache_constructor(rootzp, &zfsvfs, 0);
+	zfs_znode_cache_constructor(rootzp, NULL, 0);
 	rootzp->z_unlinked = 0;
 	rootzp->z_atime_dirty = 0;
 
-	vp = ZTOV(rootzp);
-	vp->v_type = VDIR;
-	VN_LOCK_ASHARE(vp);
+	vnode.v_type = VDIR;
+	vnode.v_data = rootzp;
+	rootzp->z_vnode = &vnode;
 
 	bzero(&zfsvfs, sizeof (zfsvfs_t));
 
@@ -1539,16 +1542,10 @@ zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx)
 	ASSERT(error == 0);
 	POINTER_INVALIDATE(&rootzp->z_zfsvfs);
 
-	VI_LOCK(vp);
-	ZTOV(rootzp)->v_data = NULL;
-	ZTOV(rootzp)->v_count = 0;
-	ZTOV(rootzp)->v_holdcnt = 0;
-	rootzp->z_vnode = NULL;
-	VOP_UNLOCK(vp, 0);
-	vdestroy(vp);
 	dmu_buf_rele(rootzp->z_dbuf, NULL);
 	rootzp->z_dbuf = NULL;
 	mutex_destroy(&zfsvfs.z_znodes_lock);
+	rootzp->z_vnode = NULL;
 	kmem_cache_free(znode_cache, rootzp);
 }
 
diff --git a/sys/cddl/contrib/opensolaris/uts/common/sys/vnode.h b/sys/cddl/contrib/opensolaris/uts/common/sys/vnode.h
index a46b71187354..5f1f4b457fd8 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/sys/vnode.h
+++ b/sys/cddl/contrib/opensolaris/uts/common/sys/vnode.h
@@ -304,7 +304,6 @@ typedef struct xvattr {
  * VOP_ACCESS flags
  */
 #define	V_ACE_MASK	0x1	/* mask represents  NFSv4 ACE permissions */
-#define	V_APPEND	0x2	/* want to do append only check */
 
 /*
  * Flags for vnode operations.