From: Pavel Machek <pavel@ucw.cz>
To: Stefan Rompf <stefan@loplof.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [RFC] userland swsusp
Date: Thu, 17 Nov 2005 11:01:26 +0100 [thread overview]
Message-ID: <20051117100126.GA15341@elf.ucw.cz> (raw)
In-Reply-To: <200511170819.17046.stefan@loplof.de>
Hi!
> > No. Writing to file would trash the filesystem. But you can bmap the file,
> > then write to the block device.
>
> And for reading, I could used a device mapper enforced read only mount or
> filesystem code from grub.
Or use a filesystem that honours read-only option, like ext2...
> Hmm, how about a possibility to ask the kernel for a list of free pages on a
> swap device? This way, userspace could write the image to swap as the kernel
> currently does, avoiding possible trouble with filesystems.
Yes, that is the plan.
> > Better avoid memory allocation.
>
> And all memory allocated and mapped in advance would be part of the image. But
> this is totally acceptable for a "suspend helper".
Yes.
Pavel
--
Thanks, Sharp!
next prev parent reply other threads:[~2005-11-17 10:02 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-16 16:00 [RFC] userland swsusp Stefan Rompf
2005-11-16 19:07 ` Pavel Machek
2005-11-17 7:19 ` Stefan Rompf
2005-11-17 10:01 ` Pavel Machek [this message]
2005-11-21 6:23 ` Rob Landley
2005-11-21 14:14 ` Pavel Machek
-- strict thread matches above, loose matches on Subject: below --
2005-11-17 18:50 Starikovskiy, Alexey Y
2005-11-16 16:10 Gross, Mark
2005-11-16 16:44 ` Greg KH
2005-11-16 20:20 ` [linux-pm] " Nigel Cunningham
2005-11-16 22:10 ` Greg KH
2005-11-16 21:25 ` Nigel Cunningham
2005-11-17 7:14 ` Arjan van de Ven
2005-11-16 19:10 ` Pavel Machek
2005-11-17 16:54 ` [linux-pm] " Olivier Galibert
2005-11-17 16:44 ` Greg KH
2005-11-17 17:03 ` Patrick Mochel
2005-11-17 20:15 ` Jacek Kawa
2005-11-17 21:56 ` [linux-pm] " Greg KH
2005-11-18 17:41 ` Jacek Kawa
2005-11-16 22:05 ` [linux-pm] " Pavel Machek
2005-11-16 21:13 ` Nigel Cunningham
2005-11-16 22:41 ` Rafael J. Wysocki
2005-11-16 22:50 ` Pavel Machek
2005-11-17 17:02 ` Olivier Galibert
2005-11-17 19:57 ` Lee Revell
2005-11-17 20:12 ` Olivier Galibert
2005-11-17 20:20 ` [linux-pm] " Lee Revell
2005-11-17 20:37 ` Dave Jones
2005-11-17 20:46 ` Lee Revell
2005-11-17 20:59 ` Dave Jones
2005-11-17 20:54 ` [linux-pm] " Lee Revell
2005-11-17 21:06 ` Chris Wright
2005-11-17 21:14 ` Lee Revell
2005-11-17 21:18 ` Chris Wright
2005-11-17 21:09 ` [linux-pm] " Matthew Garrett
2005-11-17 21:16 ` Lee Revell
2005-11-17 20:47 ` Lee Revell
2005-11-15 21:29 Pavel Machek
2005-11-15 21:29 ` Pavel Machek
2005-11-15 21:32 ` Greg KH
2005-11-15 22:25 ` [linux-pm] " Dave Jones
2005-11-15 23:32 ` Pavel Machek
2005-11-15 23:40 ` Dave Jones
2005-11-16 8:56 ` Pavel Machek
2005-11-16 21:41 ` Rafael J. Wysocki
2005-11-16 4:35 ` [linux-pm] " Dumitru Ciobarcianu
2005-11-16 6:14 ` Greg KH
2005-11-16 6:00 ` Nigel Cunningham
2005-11-16 16:50 ` Greg KH
2005-11-16 19:57 ` Nigel Cunningham
2005-11-16 21:35 ` Pavel Machek
2005-11-16 21:13 ` Nigel Cunningham
2005-11-16 22:47 ` Pavel Machek
2005-11-23 10:16 ` Lorenzo Colitti
2005-11-23 12:02 ` Pavel Machek
2005-11-19 9:32 ` Rob Landley
2005-11-19 23:51 ` Pavel Machek
2005-11-18 19:36 ` Alan Cox
2005-11-18 21:18 ` [linux-pm] " Dave Jones
2005-11-18 21:20 ` Greg KH
2005-11-19 23:43 ` [linux-pm] " Pavel Machek
2005-11-20 21:48 ` Dave Jones
2005-11-20 22:09 ` [linux-pm] " Pavel Machek
2005-11-21 11:47 ` Rafael J. Wysocki
2005-11-21 14:19 ` Pavel Machek
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