Hi!
> > >> Why exacly was sys_sync removed from prepare_processes?
> > >
> > > Because it was moved to freeze_processes().
> > >
> > >> My last power failure during suspend-to-disk caused a journal replay
> > >> which took a few minutes on reboot.
> > >
> > > AFAICT, sys_sync doesn't prevent journal replies from happening on
> > > failure.
> > > It only causes data to be written to the storage, metadata are different
> > > story.
> >
> > Ah, didn't know that. Is there any generic metadata sync call which
> > could be called on suspend?
>
> Well, in principle we can call freeze_bdev() for each mounted filesystem
> during the suspend, but first Pavel is against it and second thaw_bdev()
> misbehaves in our error paths (I've got scheduling while atomic messages
> out of it for several times).
sync should be enough to preserve data. Journal replay is quite harmless...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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