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Date: Thu, 6 Apr 2006 23:40:02 -0700
From: "Joshua Hudson" <joshudson@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: wait4/waitpid/waitid oddness
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On 4/6/06, Kyle Moffett <mrmacman_g4@mac.com> wrote:
> On Apr 6, 2006, at 22:09:48, Joshua Hudson wrote:
> > I'm the guy who removed the check in link() about source is a
> > directory, found out what broke, and am working on a patch to fix
> > all the resulting breakage.  Your task is apt to be a lot simpler.
>
> I seem to recall the reason why hardlinking directories was
> prohibited had something more to do with some unfixable races and
> deadlocks in the kernel; not to mention creating self-referential
> directory trees that are never freed and chew up disk space.

You recall correctly. I have fixed the self-referrential problem, and I
am testing a fix for the races and deadlocks. Desk proof is not good
enough for me.