On Fri, Apr 13, 2012 at 04:55:01PM -0400, Vivek Goyal wrote: > But neither seems to be the case here. So to make sure that blkg_lookup() > under rcu will see the updated value of queue flag (bypass), are we > relying on the fact that caller should see the DEAD flag and not go > ahead with blkg_lookup()? If yes, atleast it is not obivious. We're relying on the fact that it doesn't matter anymore because all blkgs will be shoot down in queue cleanup path which goes through rcu free, which is different from deactivating individual policies. It indeed is subtle. Umm... this is starting to get ridiculous. Why the hell was megaraid messing with so many queues anyways? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
