On Sun, 4 Dec 2005, Christoph Hellwig wrote:

> On Sun, Dec 04, 2005 at 12:56:12PM +0000, Christoph Hellwig wrote:
> > They are still NULL in exactly one case: lookup_one_len.  Given the design
> > of lookup_one_len we can't get at a nameidata there at all.
> 
> Oh, forgot the most important bit here :)  lookup_one_len is a library helper
> never called by the VFS.  autofs (v4 at least) doesn't use it so now always
> get a nameidata.  In fact if you look in -mm there's a patch from me that
> makes use of that fact.
> 

But Will is calling it in a something like a stacking context and autofs 
fails to handle it. Hence this discussion.

Ian

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