On Fri, 2 Nov 2012, Michal Hocko wrote: > > OK, it adds "an overhead" also when there is no hotadd going on but this > is just one additional mem access&cmp&je so it shouldn't be noticable > (lruvec->zone is used most of the time later so it not a pointless > load). I think so too. > It is also easier to backport for stable. Yes. > But is there any reason to fix it later properly in the hotadd hook? I don't know. Not everybody liked it fixed this way: it's not unreasonable to see this as a quick hack rather than the right fix. I was expecting objectors to post alternative hotadd hook patches, then we could compare and decide. That didn't happen; but we can certainly look to taking out these lines later if something we agree is better comes along. Not high on anyone's agenda, I think. > > Anyway > Acked-by: Michal Hocko <mhocko@xxxxxxx> Thanks, Hugh -- 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