Index: sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
===================================================================
--- sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c	(wersja 197635)
+++ sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c	(kopia robocza)
@@ -4180,8 +4180,12 @@ zfs_freebsd_setattr(ap)
 	zflags = VTOZ(vp)->z_phys->zp_flags;
 
 	if (vap->va_flags != VNOVAL) {
+		zfsvfs_t *zfsvfs = VTOZ(vp)->z_zfsvfs;
 		int error;
 
+		if (zfsvfs->z_use_fuids == B_FALSE)
+			return (EOPNOTSUPP);
+
 		fflags = vap->va_flags;
 		if ((fflags & ~(SF_IMMUTABLE|SF_APPEND|SF_NOUNLINK|UF_NODUMP)) != 0)
 			return (EOPNOTSUPP);