From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nigel Cunningham <nigel@nigel.suspend2.net>
Subject: Re: [RFC][PATCH -mm 1/2] swsusp: Free more memory
Date: Sun, 22 Apr 2007 09:31:39 +1000
Message-ID: <1177198299.4036.8.camel@nigel.suspend2.net>
References: <200704220002.37083.rjw@sisk.pl> <200704220005.39942.rjw@sisk.pl>
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To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: pm list <linux-pm@lists.linux-foundation.org>, Pavel Machek <pavel@ucw.cz>
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Hi.

On Sun, 2007-04-22 at 00:05 +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rjw@sisk.pl>
>=20
> Move the definition of PAGES_FOR_IO to kernel/power/power.h and introduce
> SPARE_PAGES representing the number of pages that should be freed by the
> swsusp's memory shrinker in addition to PAGES_FOR_IO so that device drive=
rs can
> allocate some memory (up to 1 MB total) in their .suspend() routines with=
out
> causing the suspend to fail.

1MB is not going to be enough for people with DRI. I have a cycle on my
machine recording 3510 extra pages (13 meg) allocated during the atomic
copy, and I know there are others with larger numbers.

Nigel

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