On Thu 31-10-13 10:37:58, Johannes Weiner wrote: > On Thu, Oct 31, 2013 at 09:50:17AM +0100, Michal Hocko wrote: > > On Wed 30-10-13 15:12:48, Andrew Morton wrote: [...] > > > From: Johannes Weiner <hannes@xxxxxxxxxxx> > > > Subject: mm: memcg: lockdep annotation for memcg OOM lock > > > > > > The memcg OOM lock is a mutex-type lock that is open-coded due to memcg's > > > special needs. Add annotations for lockdep coverage. > > > > I am not sure what this gives us to be honest. AA and AB-BA deadlocks > > are impossible due to nature of the lock (it is trylock so we never > > block on it). > > It's not an actual trylock, because we loop around it. If it fails, > we wait for the unlock, restart the fault, and try again. That's a > LOCK operation. OK, I have to revisit the shole series. Do you plan to post it anytime soon? Or where can I find the latest version? -- Michal Hocko SUSE Labs -- 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>