linux-kernel - Re: A kexec approach to hibernation

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Date:	Sun, 10 Jun 2007 19:02:21 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
CC:	Pavel Machek <pavel@....cz>, Jeremy Maitin-Shepard <jbms@....edu>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...l.org>,
	Nigel Cunningham <nigel@...el.suspend2.net>
Subject: Re: A kexec approach to hibernation

Matthew Garrett wrote:
> No, it only supports ext2 (and reading ext3 as if it's ext2). Right now, 
> the assumption that syncing during suspend will cause data to hit 
> something grub can read isn't a safe one.

I brought this issue up quite a few years ago at an OLS BOF.  We pretty
much need a "supersync" system call; you can do this by bmapping any
file on ext3, but having something supported across filesystems would be
good.

	-hpa
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