From: Nigel Cunningham <nigel@suspend2.net>
To: Pavel Machek <pavel@ucw.cz>
Cc: Linux PM <linux-pm@osdl.org>
Subject: Re: [RFC][PATCH -mm][Experimental] swsusp: freeze userspace processes first
Date: Wed, 1 Feb 2006 21:18:59 +1000 [thread overview]
Message-ID: <200602012119.07233.nigel@suspend2.net> (raw)
In-Reply-To: <20060201105505.GB2879@elf.ucw.cz>
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Hi.
On Wednesday 01 February 2006 20:55, Pavel Machek wrote:
> Hi!
>
> > This is an experimantal patch aimed at the "unable to freeze processes
> > under load" problem.
> >
> > On my box the 2.6.16-rc1-mm4 kernel with this patch applied survives the
> > "dd if=/dev/hda of=/dev/null" test.
>
> What filesystem? ext2 vs. ext3 is very different. I can fix ext2 by
> just upping the timeout. ext3 is harder, because of the journalling
> thread. Maybe I'll take the sledgehammer approach and just freeze all
> the user tasks first... I tried to do the "small" approach and just
> fix the journalling code...
>
> I'm not sure what problem the usermodehelper code is trying to
> solve... why are usermodehelpers special?
This is related to the 'Hotplug events during sleep transition' thread from
the PM list from December.
Regards,
Nigel
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next prev parent reply other threads:[~2006-02-01 11:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-01 0:41 [RFC][PATCH -mm][Experimental] swsusp: freeze userspace processes first Rafael J. Wysocki
2006-02-01 10:55 ` Pavel Machek
2006-02-01 11:18 ` Nigel Cunningham [this message]
2006-02-01 20:13 ` Rafael J. Wysocki
2006-02-01 11:47 ` Pavel Machek
2006-02-01 12:24 ` Nigel Cunningham
2006-02-01 12:49 ` Pavel Machek
2006-02-01 21:41 ` Nigel Cunningham
2006-02-01 23:57 ` Rafael J. Wysocki
2006-02-02 13:55 ` Rafael J. Wysocki
2006-02-02 15:08 ` Pavel Machek
2006-02-02 18:32 ` Rafael J. Wysocki
2006-02-04 21:26 ` Pavel Machek
2006-02-04 21:47 ` Rafael J. Wysocki
2006-02-01 22:19 ` Rafael J. Wysocki
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