Re: [RFC] fhandle implementation.

[Neil Brown]

On Tuesday June 27, [e-mail] wrote:
> 
> 
> On Tue, 27 Jun 2000, Neil Brown wrote:
> 
> > I think we are failing to communicate, so maybe would should just drop
> > this for now....
> > 1/ When I look at "struct vfsmount", is see glue for sticking one part
> >    of one fs-tree to another part of another fs-tree.  That this
> >    defines are subtree is nearly an accident.  Any dentry defines a
> >    subtree (though a dentry for a file defines only a trivial
> >    subtree).
> 
> Wrong. It's a "component of a namespace".
> 

Ah.  I think I see why we are failing to communicate.  You are
thinking "namespace" and I am thinking "filesystem".

However, it's probably a bit academic.

I am now thinking that what I would want decode_fh or
fhandle_to_dentry or whatever to return would be a list of dentries,
one for each place in the filesystem that the particular file was
found. 

This would probably mean passing an array of (struct dentry *) with
the understanding the every dentry put in the array would have been
dget()ed, and would need a dput().

It is tempting to use the d_alias list rather than an array, but I
think there be dragons there.

NeilBrown