zap_flags
uint64_t zap_flags; /* zap_flags_t */
zap->zap_flags != 0)
uint64_t zap_flags; /* zap_flag_t */
uint64_t zap_flags; /* zap_flags_t */
zp->zap_flags = flags;
return (zap_f_phys(zap)->zap_flags);