> Thanks Tejun and Hugh. Sorry for my late entry in getting around to > testing this fix. On the surface it sounds correct however I'd like to > test this on top of 3.10.* since that is what we'll likely be running. > I've tried to apply Hugh's patch above on top of 3.10.19 but it > appears there are a number of conflicts. Looking over the changes and > my understanding of the problem I believe on 3.10 only the > cgroup_free_fn needs to be run in a separate workqueue. Below is the > patch I've applied on top of 3.10.19, which I'm about to start > testing. If it looks like I botched the backport in any way please > let me know so I can test a propper fix on top of 3.10.19. >
You didn't move css free_work to the dedicate wq as Tejun's patch does. css free_work won't acquire cgroup_mutex, but when destroying a lot of cgroups, we can have a lot of css free_work in the workqueue, so I'd suggest you also use cgroup_destroy_wq for it. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
