Re: [PATCH] Fix procfs task exe symlink

[Erez Zadok]

In message <Pine.LNX.4.64.0801231945530.12676@xxxxxxxxxxxxxxxxxxxxxxxxx>, Jan Engelhardt writes:
> 
> On Jan 23 2008 10:29, Matt Helsley wrote:
> >
> >For executables on the stackable MVFS filesystem the current procfs
> >methods for implementing a task's exe symlink do not point to the
> >correct file and applications relying on the symlink fail (see the
> >java example below).
> 
> This reminds me of unoionfs - it also had this issue, but IIRC,
> it eventually got solved. (Should now display /union/exe rather
> than /lowerlevel/exe.) Unionfs developers should know more.

Unionfs resolved this by fully implementing the address_space ops, as well
as ->mmap (i.e., one cannot "cheat" and inherit the lower address_space).

Erez.
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