Re: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green.

Greg KH
2008-02-21T00:49:03Z

On Thu, Feb 21, 2008 at 11:40:06AM +1100, Nigel Cunningham wrote:
> Hi.
>
> Matthew Garrett wrote:
>> On Thu, Feb 21, 2008 at 09:45:02AM +1100, Nigel Cunningham wrote:
>>> - people keep talking about hibernating to an ext3 fs mounted on fuse as
>>> a limitation of the freezer. To do that with kexec, you're still going to
>>> have to bmap the ext3 fs and pass the block list (in which case we can
>>> also do it without kexec) or umount all the ext3/fuse part and remount in
>>> the kexec'd kernel. Sort of defeats the purpose, doesn't it?
>> No, with a freezer-based model you can basically *never* suspend to
>> anything related to FUSE or a userspace USB device or anything involving
>> userspace iSCSI initiators or whatever. Sure, there are cases where moving
>> away from the current model doesn't buy you anything, but that doesn't
>> mean that the current model is a good thing. It's not. The freezer is a
>> fundamentally broken concept.
>
> Putting drivers and filesystems in userspace is the fundamentally broken
> concept. Not just when it comes to the freezer. The whole idea is
> inherently racy.

Racy with regards to other things becides trying to suspend a machine?
If so, what?

thanks,

greg k-h