On Wed, Nov 09, 2005 at 04:37:13PM -0600, Tom Zanussi wrote:
> Andrew Morton writes:
> > Tom Zanussi <[email protected]> wrote:
> > >
> > > +By default of course, relay_open() creates relay files in the relayfs
> > > +filesystem. Because relay_file_operations is exported, however, it's
> > > +also possible to create and use relay files in other pseudo-filesytems
> > > +such as debugfs.
> >
> > Why would anyone wish to place relayfs files within other
> filesystems?
>
> The reason they're exported is that when relayfs was being considered
> for inclusion, GregKH requested that the relay file operations be
> exported, which I did but didn't actually try to use them there until
> now. It turns out that the current patch's changes are needed in
> order to be able to do that. The reason behind being able to do this
> I assume is so that developers can use relay files do ad hoc tracing
> inside debugfs rather than have part of their application in debugfs
> and another part in relayfs. Maybe Greg can chime in as to whether he
> thinks it's still useful
Yes, I still think that is very useful to have. The relayfs core code
shouldn't rely on what filesystem is is placed into.
Thanks for doing this, I appreciate it.
greg k-h
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