On Mon, May 11, 2015 at 03:33:10PM +0900, Krzysztof Kozlowski wrote: > > Yes, they should and I'm not sure why what you're saying is happening > > because freezing() test done from the frozen tasks themselves should > > keep them in the freezer. Which kernel version did you test? Can you > > please verify it against a recent kernel? > > I tested it on v4.1-rc3 and next-20150508. > > Task was moved to frozen cgroup: > ----- > root@localhost:/sys/fs/cgroup/freezer/frozen# grep . * > cgroup.clone_children:0 > cgroup.procs:2750 > freezer.parent_freezing:0 > freezer.self_freezing:1 > freezer.state:FROZEN > notify_on_release:0 > tasks:2750 > tasks:2773 > ----- > > Unfortunately during system resume the process was woken up. The "if > (frozen(p))" check was true. Is it expected behaviour? It isn't optimal but doesn't break anything either. Whether a task stays in the freezer or not is solely decided by freezing() test by the task itself. Being woken up spuriously doesn't break anything. Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>