On Mon 03-12-18 10:45:35, Linus Torvalds wrote: > On Mon, Dec 3, 2018 at 10:30 AM Michal Hocko <mho...@kernel.org> wrote: > > > > I do not get it. 5265047ac301 which this patch effectively reverts has > > regressed kvm workloads. People started to notice only later because > > they were not running on kernels with that commit until later. We have > > 4.4 based kernels reports. What do you propose to do for those people? > > We have at least two patches that others claim to fix things. > > You dismissed them and said "can't be done".
You are misinterpreting my words. I haven't dismissed anything. I do recognize both usecases under discussion. I have merely said that a better THP locality needs more work and during the review discussion I have even volunteered to work on that. There are other reclaim related fixes under work right now. All I am saying is that MADV_TRANSHUGE having numa locality implications cannot satisfy all the usecases and it is particurarly KVM that suffers from it. -- Michal Hocko SUSE Labs
