Hello, On Thu, Dec 22, 2011 at 02:54:42AM +0100, Frederic Weisbecker wrote: > > Frederic, so, it seems we actually have race conditions here. I > > really wish cgroup made sure that things like this can't happen even > > if we pay a bit of overhead in relatively cold paths. I could be > > being unrealistic tho. Any ideas? > > Hmm, I'm a bit confused about the issue. But doesn't this patch fix the issue? Yeah, I was just saying it would be nice if we don't have to fix the issue. > Also the parent can't be calling sched_fork() and cgroup_exit() at > the same time. Hmmm... so this one can't happen anymore but there are races involving cgroup_exit() which doesn't have anything to do with threadgroup lock (Dalsuke has more patches), so this doesn't really matter. Let's forget about this thread. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html