From mboxrd@z Thu Jan  1 00:00:00 1970
From: Oliver Neukum <oneukum@suse.com>
Subject: Re: [PATCH 1/1] suspend: delete sys_sync()
Date: Tue, 12 May 2015 08:11:38 +0200
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To: Len Brown <lenb@kernel.org>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>, Alan Stern <stern@rowland.harvard.edu>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>, Linux PM list <linux-pm@vger.kernel.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Len Brown <len.brown@intel.com>

On Mon, 2015-05-11 at 16:34 -0400, Len Brown wrote:
> But upon reflection, I do not believe that the kernel is adding value
> here,
> instead it is imposing a policy, and that policy decision is sometimes
> prohibitively expensive.
> User-space can do this for itself (and in the case of desktop distros,
> already does),
> and so the kernel should butt-out.

There is however a race condition with doing it in user space.
So adding a parameter to select behavior would increase safety a bit.

	Regards
		Oliver