From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
Subject: Re: [PATCH] fuse: Add support for fuse stacked I/O
Date: Fri, 15 Jan 2016 08:31:25 -0800
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On Jan 14, 2016 11:19 AM, "Linus Torvalds"
<torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> wrote:
>
> On Thu, Jan 14, 2016 at 10:57 AM, Nikhilesh Reddy <reddyn-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> wrote:
> >
> > *I will send out a properly formatted patch shortly.*
>
> So before you do that, can you explain in what cases fuse just wants
> to pass through the IO?
>
> Why aren't such cases just using unionfs or something?
>
> In other words, I think that patch needs an explanation for the
> *reason* for the new functionality.

Also, clarifying the functionality would be nice.  What is the
"underlying" fs you speak of?  What f_cred gets used?  Who opens the
underlying file, whatever that is?

Is the intent overlay-style stacking or is it something else entirely?

--Andy