> Yes, one concern is that humans confuse the old and the new ID. > > I also think it makes sense to allow the new interfaces to look up the > mount based on either the old or the new ID. But I could be wrong Hm, mount id recycling may happen so quickly that for service restarts with a lot of mounts this becomes mostly useless... > there, since that might encourage bad code. Maybe the new interface > should only use take the new ID, which means no mixed use of > /proc/$$/mountinfo and statmnt/listmnt. ... so I think that is indeed the better way of doing things. There's no need to encourage userspace to mix both identifiers.
