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Date: Wed, 24 Sep 2014 19:55:21 +0100
From: Al Viro <viro@ZenIV.linux.org.uk>
To: Mikhail Efremov <sem@altlinux.org>
Cc: linux-kernel@vger.kernel.org, Miklos Szeredi <mszeredi@suse.cz>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	linux-fsdevel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH v2] vfs: Don't exchange "short" filenames unconditionally.
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On Wed, Sep 24, 2014 at 10:14:33PM +0400, Mikhail Efremov wrote:
> Only exchange source and destination filenames
> if flags contain RENAME_EXCHANGE.
> In case if executable file was running and replaced by
> other file /proc/PID/exe should still show correct file name,
> not the old name of the file by which it was replaced.

Yecchhhh...  Applied, but it's very ugly.  Oh, well - regression is
regression, and I don't see a cleaner fix at the moment.  If I don't
manage to come up with anything prettier, to Linus it goes in tonight
pull request ;-/