USE_SA
zfsvfs->z_use_sa = USE_SA(zfsvfs->z_version, zfsvfs->z_os);
zfsvfs->z_use_sa = USE_SA(zfsvfs->z_version, zfsvfs->z_os);
rootzp->z_is_sa = USE_SA(version, os);
zfsvfs->z_use_sa = USE_SA(version, os);