Re: [resend PATCH v2 2/2] fuse: ensure that submounts lookup their parent

[Miklos Szeredi]

On Wed, 11 Oct 2023 at 03:26, Krister Johansen <kjlx@xxxxxxxxxxxxxxxxxx> wrote:

> I am curious what you have in mind in order to move this towards a
> proper fix?  I shied away from the approach of stealing a nlookup from
> mp_fi beacuse it wasn't clear that I could always count on the nlookup
> in the parent staying positive.  E.g. I was afraid I was either going to
> not have enough nlookups to move to submounts, or trigger a forget from
> an exiting container that leads to an EBADF from the initial mount
> namespace.

One idea is to transfer the nlookup to a separately refcounted object
that is referenced from mp_fi as well as all the submounts.

Thanks,
Miklos