lkml.org 
[lkml]   [2010]   [Mar]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [linux-pm] Is it supposed to be ok to call del_gendisk while userspace is frozen?
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

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


\
 
 \ /
  Last update: 2010-03-04 14:55    [W:0.120 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site