On Fri 01-12-17 13:15:38, Roman Gushchin wrote: [...] > So, maybe we just need to return -EAGAIN (or may be -ENOTSUP) on any read/write > attempt if option is not enabled? Yes, that would work as well. ENOTSUP sounds better to me. -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html