linux-kernel - Re: [PATCH] procfs: make /proc style symlinks behave like "normal" symlinks

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Message-ID: <20091119223018.GC11212@elf.ucw.cz>
Date:	Thu, 19 Nov 2009 23:30:18 +0100
From:	Pavel Machek <pavel@....cz>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Jeff Layton <jlayton@...hat.com>, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] procfs: make /proc style symlinks behave like "normal"
 symlinks

Hi!

(Sorry, missed Cc's first time).

> >> Adding the missing revalidations is fine, but I don't believe that
> >> helps to fix Pavel's issue. I'll go back and take a more careful look
> >> at the suggestion that Miklos made and see whether it makes sense to
> >> implement a new FS_* flag for this, and see what it'll take to fix
> >> Pavel's issue.
> >
> > One posibility would be to make open(/proc/XX/fd/XX) behave like
> > dup(). That should solve the NFS problems, too, no?
> 
> Not for bind mounts, and the revalidate in follow_mounts is a bug regardless.

Really? So dup() is also broken on nfs? How do bind mounts affect
dup()?
                                                                        Pavel   
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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