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SubjectRe: [linux-pm] Is it supposed to be ok to call del_gendisk while userspace is frozen?
Hi!

> > > This is a matter for Jens. Is the bdi writeback task freezable? If it
> > > is, should it be made unfreezable?
> >
> > I'm not a big expect on what tasks should be freezable or not. As it
> > stands, the writeback tasks will attempt to freeze and thaw with the
> > system. I guess that screws the sync from resume call, since it's not
> > running and the sync will wait for it to retrieve and finish that work
> > item.
> >
> > To the suspend experts - can we safely mark the writeback tasks as
> > non-freezable?
>
> The reason for freezing those tasks is to avoid writebacks at random
> times during a system sleep transition, when the underlying device may
> already be suspended, right?

It is also there to avoid inconsistency between in-filesystem data and
snapshot in hibernation image.

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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