Am 16.09.2015 um 03:24 schrieb Tejun Heo: > Hello, Paul. > > On Tue, Sep 15, 2015 at 04:38:18PM -0700, Paul E. McKenney wrote: >> Well, the decision as to what is too big for -stable is owned by the >> -stable maintainers, not by me. > > Is it tho? Usually the subsystem maintainer knows the best and has > most say in it. I was mostly curious whether you'd think that the > changes would be too risky. If not, great. > >> I am suggesting trying the options and seeing what works best, then >> working to convince people as needed. > > Yeah, sure thing. Let's wait for Christian. Well, I have optimized my testcase now that is puts enough pressure to the system to confuses system (the older 209 version, which still has some event loop issues) that systemd restarts the journal deamon and does several other recoveries. To avoid regressions - even for somewhat shaky userspaces - we should consider a revert for 4.2 stable. There are several followup patches, which makes the revert non-trivial, though. The rework of the percpu rwsem seems to work fine, but we are beyond the merge window so 4.4 seems better to me. (and consider a revert for 4.3) Christian -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
