Re: [PATCH] libata, freezer: avoid block device removal while systemis frozen

[Nigel Cunningham]

Hi.

On 15/12/13 07:36, Tejun Heo wrote:
> On Sat, Dec 14, 2013 at 03:31:21PM -0500, Tejun Heo wrote:
> > So, all this is about hibernation?  Does that mean that it's safe to
> > unfreeze before invoking resume?  ie. we currently do,
> >
> > 	freeze
> > 	suspend devs
> > 	resume devs
> > 	unfreeze
> >
> > If we can just do,
> >
> > 	freeze
> > 	suspend devs
> > 	unfreeze
> > 	resume devs
> Ummm... even better, does that mean, in the long term, we can decouple
> freezing and device pm operations?  If this is just about hibernation,
> there's no reason to wrap device driver pm ops with freezer, right?
>
> Thanks.
Rafael has spent far more time than me thinking about the semantics 
here, so I'd like to defer to him. Rafael?...

Regards,

Nigel
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