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Date: Sat, 31 Mar 2012 17:45:33 +0300
From: Alexey Dobriyan <adobriyan@gmail.com>
To: David Madore <david+ml@madore.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: since when does linkat() on deleted /proc/$PID/fd/$num return
 ENOENT ?
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On Sat, Mar 31, 2012 at 01:06:40PM +0200, David Madore wrote:
> On Sat, Mar 31, 2012 at 09:53:05AM +0300, Alexey Dobriyan wrote:
> > It was explicitly prohibited since 2.6.39:
> > 
> > commit aae8a97d3ec30788790d1720b71d76fd8eb44b73
> > Author: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
> > Date:   Sat Jan 29 18:43:27 2011 +0530
> > 
> >     fs: Don't allow to create hardlink for deleted file
> <snip>
> 
> Thanks for digging this for me!

Well, the question if this counts as userspace-visible change.