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Message-Id: <200905070040.08561.rjw@sisk.pl>
Date: Thu, 7 May 2009 00:40:07 +0200
From: "Rafael J. Wysocki" <rjw@...k.pl>
To: pm list <linux-pm@...ts.linux-foundation.org>
Cc: Wu Fengguang <fengguang.wu@...el.com>,
Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>, Pavel Machek <pavel@....cz>,
Nigel Cunningham <nigel@...onice.net>
Subject: [RFC][PATCH 0/5] PM/Hibernate: Rework memory shrinking
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.
Details are in the changelogs, please have a look and tell me what you think.
Best,
Rafael
--
Everyone knows that debugging is twice as hard as writing a program
in the first place. So if you're as clever as you can be when you write it,
how will you ever debug it? --- Brian Kernighan
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