Re: [linux-pm] Is it supposed to be ok to call del_gendisk whileuserspace is frozen?

[Pavel Machek]

Hi!

> > journalling assumptions broken: commit block is there, but previous
> > blocks are not intact. Data loss.
> > 
> > ...and that was the first I could think about. Lets not do
> >  this. Barriers were invented for a reason.
> 
> Very well.  Then we still need a solution to the original problem:  
> Devices sometimes need to be unregistered during resume, but
> del_gendisk() blocks on the writeback thread, which is frozen until
> after the resume finishes.  How do you suggest this be fixed?

Avoid unregistering device during resume. Instead, return errors until
resume is done and you can call del_gendisk? 
									Pavel

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