[PATCH 3/4] watch_queue: Implement mount topology and attribute change notifications

[Linus Torvalds]

On Fri, Jul 24, 2020 at 12:59 PM David Howells <dhowells at redhat.com> wrote:
>
> That's a good point.  Any suggestions on how to do it?  An additional RLIMIT?
>
> Or should I do it like I did with keyrings and separately manage a quota for
> each user?

I'd count them per user, and maybe start out saying "you can have as
many watches as you can have files" and just re-use RLIMIT_NOFILE as
the limit for them.

And if that causes problems, let's re-visit. How does that sound?

                Linus