On Tue, 3 Oct 2017, Pavel Machek wrote:

> > This point I don't understand. What exactly do you mean?
> 
> Hibernation:
> 
> We freeze, do system snapshot, unfreeze, and write image to
> disk. 

Where/why do you unfreeze between creating the snapshot and writing it 
out?

Again, I agree that the (rare) kthreads that are actually "creating" new 
I/O have to be somehow frozen and require special care.

-- 
Jiri Kosina
SUSE Labs

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