Hi! > > Actaully, I'm perfectly fine with that, as long as each task blocked by the > > driver due to suspend has PF_FROZEN (or something similar) set. Then, at > > least theoretically, we'll be able to drop the freezer from the suspend code > > path and move it after device_suspend() (or the hibernation-specific > > equivalent) for hibernation (in that case there shouldn't be a problem with > > any task waiting on I/O while the freezer is running ;-)). > > I don't see the need for a freezer for snapshot but that's a different > issue. (stop_machine looks good enough to me). Freezer is not needed for snapshot -- it is needed so that we can write out the snapshot to disk without the need for special drivers/block/simple-ide-for-suspend.c. (We are doing snapshot, then write to disk from userland code in uswsusp). Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
