From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Oliver Neukum <oliver@neukum.org>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>,
linux-pm@lists.linux-foundation.org,
LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] Memory allocations in .suspend became very unreliable)
Date: Wed, 20 Jan 2010 22:13:23 +0100 [thread overview]
Message-ID: <201001202213.23373.rjw@sisk.pl> (raw)
In-Reply-To: <201001201505.41167.oliver@neukum.org>
On Wednesday 20 January 2010, Oliver Neukum wrote:
> Am Dienstag, 19. Januar 2010 21:37:35 schrieb Rafael J. Wysocki:
> > That said, Maxim reported that in his test case the mm subsystem apparently
> > attempted to use I/O even if there was a plenty of free memory available and
> > I'd like prevent that from happening.
>
> Hi,
>
> it seems to me that this is caused by the mm subsytem maintaing
> a share of clean pages precisely so that GFP_NOIO will work.
> Perhaps it is a good idea to
> a) launder a number of pages if the system is about to be suspended
> between the freezer and notifying drivers
That was tried, didn't work.
> b) set the ration of clean pages to dirty pages to 0 while suspending
> the system.
Patch, please?
Rafael
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next prev parent reply other threads:[~2010-01-20 21:12 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1263549544.3112.10.camel@maxim-laptop>
[not found] ` <1263678289.4276.4.camel@maxim-laptop>
[not found] ` <201001162317.39940.rjw@sisk.pl>
2010-01-17 0:38 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] Memory allocations in .suspend became very unreliable) Rafael J. Wysocki
2010-01-17 1:24 ` Oliver Neukum
2010-01-17 13:27 ` Rafael J. Wysocki
2010-01-17 13:36 ` Rafael J. Wysocki
2010-01-17 18:58 ` Benjamin Herrenschmidt
2010-01-17 23:00 ` Rafael J. Wysocki
2010-01-18 7:53 ` Oliver Neukum
2010-01-18 16:17 ` [linux-pm] [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Alan Stern
2010-01-18 20:59 ` Rafael J. Wysocki
2010-01-19 15:13 ` Alan Stern
2010-01-18 20:56 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Rafael J. Wysocki
2010-01-18 21:55 ` Benjamin Herrenschmidt
2010-01-18 23:33 ` Rafael J. Wysocki
2010-01-17 13:55 ` Rafael J. Wysocki
2010-01-17 16:21 ` [linux-pm] [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Minchan Kim
2010-01-17 16:23 ` Minchan Kim
2010-01-18 0:25 ` Rafael J. Wysocki
2010-01-18 2:20 ` KOSAKI Motohiro
2010-01-18 21:06 ` Rafael J. Wysocki
2010-01-19 9:15 ` Oliver Neukum
2010-01-19 20:34 ` Rafael J. Wysocki
2010-01-18 17:00 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " Oliver Neukum
2010-01-18 20:41 ` Rafael J. Wysocki
2010-01-19 9:25 ` Oliver Neukum
2010-01-19 20:37 ` Rafael J. Wysocki
2010-01-20 14:05 ` Oliver Neukum
2010-01-20 21:13 ` Rafael J. Wysocki [this message]
2010-01-18 2:16 ` KOSAKI Motohiro
2010-01-18 20:55 ` Rafael J. Wysocki
2010-01-19 1:19 ` KOSAKI Motohiro
2010-01-19 3:19 ` Benjamin Herrenschmidt
2010-01-19 9:04 ` Bastien ROUCARIES
2010-01-19 23:17 ` Benjamin Herrenschmidt
2010-01-20 11:31 ` Oliver Neukum
2010-01-20 21:11 ` Benjamin Herrenschmidt
2010-01-20 21:12 ` Rafael J. Wysocki
2010-01-19 20:47 ` Rafael J. Wysocki
2010-01-20 0:33 ` KOSAKI Motohiro
2010-01-20 21:21 ` Rafael J. Wysocki
2010-01-21 0:47 ` KOSAKI Motohiro
2010-01-21 20:21 ` Rafael J. Wysocki
2010-01-21 20:42 ` [linux-pm] [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: " Nigel Cunningham
2010-01-21 21:38 ` Rafael J. Wysocki
2010-01-22 1:31 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] " KOSAKI Motohiro
2010-01-22 1:42 ` KOSAKI Motohiro
2010-01-22 10:11 ` Maxim Levitsky
2010-01-22 21:19 ` [Update][PATCH] MM / PM: Force GFP_NOIO during suspend/hibernation and resume Rafael J. Wysocki
2010-01-23 9:29 ` Maxim Levitsky
2010-01-25 21:49 ` Rafael J. Wysocki
2010-01-25 21:52 ` Alexey Starikovskiy
2010-01-30 18:56 ` Rafael J. Wysocki
2010-01-30 20:42 ` Maxim Levitsky
2010-01-30 20:53 ` Rafael J. Wysocki
2010-01-22 20:58 ` [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] Memory allocations in .suspend became very unreliable) Rafael J. Wysocki
2010-01-30 15:46 ` Maxim Levitsky
2010-01-30 18:47 ` Rafael J. Wysocki
2010-01-30 20:37 ` Maxim Levitsky
2010-02-01 19:51 ` Maxim Levitsky
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