From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner+w=401wt.eu-S1762782AbZEGWGp@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1762782AbZEGWGp (ORCPT <rfc822;w@1wt.eu>);
	Thu, 7 May 2009 18:06:45 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754220AbZEGWGe
	(ORCPT <rfc822;linux-kernel-outgoing>);
	Thu, 7 May 2009 18:06:34 -0400
Received: from ogre.sisk.pl ([217.79.144.158]:39039 "EHLO ogre.sisk.pl"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1750959AbZEGWGd (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Thu, 7 May 2009 18:06:33 -0400
From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: pm list <linux-pm@lists.linux-foundation.org>
Subject: [RFC][PATCH 0/5] PM/Hibernate: Rework memory shrinking (rev. 2)
Date: Thu, 7 May 2009 23:48:58 +0200
User-Agent: KMail/1.11.2 (Linux/2.6.30-rc4-rjw; KDE/4.2.2; x86_64; ; )
Cc: Wu Fengguang <fengguang.wu@intel.com>,
       Andrew Morton <akpm@linux-foundation.org>,
       LKML <linux-kernel@vger.kernel.org>, Pavel Machek <pavel@ucw.cz>,
       Nigel Cunningham <nigel@tuxonice.net>,
       David Rientjes <rientjes@google.com>,
       "linux-mm@kvack.org" <linux-mm@kvack.org>
References: <200905070040.08561.rjw@sisk.pl>
In-Reply-To: <200905070040.08561.rjw@sisk.pl>
MIME-Version: 1.0
Content-Disposition: inline
Message-Id: <200905072348.59856.rjw@sisk.pl>
Content-Type: Text/Plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Thursday 07 May 2009, Rafael J. Wysocki wrote:
> Hi,
> 
> The following patchset is an attempt to rework the memory shrinking mechanism
> used during hibernation to make room for the image.  It is a work in progress
> and most likely it's going to be modified, but it has been discussed recently
> and I'd like to get comments on the current version.
> 
> [1/5] - disable the OOM kernel after freezing tasks (this will be dropped if
>         it's verified that we can avoid the OOM killing by using
>         __GFP_FS|__GFP_WAIT|__GFP_NORETRY|__GFP_NOWARN
>         in the next patches).
> 
> [2/5] - drop memory shrinking from the suspend (to RAM) code path
> 
> [3/5] - move swsusp_shrink_memory() to snapshot.c
> 
> [4/5] - rework swsusp_shrink_memory() (to use memory allocations for applying
>         memory pressure)
> 
> [5/5] - allocate image pages along with the shrinking.

Updated patchset follows.

Most importantly, the first patch has been replaced by the one adding
__GFP_NO_OOM_KILL, following the Andrew's advice.  The other patches are
slightly changed to address some comments I've received since yesterday.

Please tell me what you think.

Best,
Rafael