On 08/17/2012 01:35 PM, Michal Hocko wrote: >>> Above you said "Once enabled, can't be disabled." and now you can >>> > > disable it? Say you are a leaf group with non accounted parents. This >>> > > will clear the flag and so no further accounting is done. Shouldn't >>> > > unlimited mean that we will never reach the limit? Or am I missing >>> > > something? >>> > > >> > >> > You are missing something, and maybe I should be more clear about that. >> > The static branches can't be disabled (it is only safe to disable them >> > from disarm_static_branches(), when all references are gone). Note that >> > when unlimited, we flip bits, do a transversal, but there is no mention >> > to the static branch. > My little brain still doesn't get this. I wasn't concerned about static > branches. I was worried about memcg_can_account_kmem which will return > false now, doesn't it. > Yes, it will. If I got you right, you are concerned because I said that can't happen. But it will. But I never said that can't happen. I said (ok, I meant) the static branches can't be disabled. -- 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>