On Mon 15-01-18 15:30:59, Andrey Ryabinin wrote: > > > On 01/12/2018 03:24 PM, Michal Hocko wrote: > > On Fri 12-01-18 00:59:38, Andrey Ryabinin wrote: > >> On 01/11/2018 07:29 PM, Michal Hocko wrote: > > [...] > >>> I do not think so. Consider that this reclaim races with other > >>> reclaimers. Now you are reclaiming a large chunk so you might end up > >>> reclaiming more than necessary. SWAP_CLUSTER_MAX would reduce the over > >>> reclaim to be negligible. > >>> > >> > >> I did consider this. And I think, I already explained that sort of race in > >> previous email. > >> Whether "Task B" is really a task in cgroup or it's actually a bunch of > >> reclaimers, > >> doesn't matter. That doesn't change anything. > > > > I would _really_ prefer two patches here. The first one removing the > > hard coded reclaim count. That thing is just dubious at best. If you > > _really_ think that the higher reclaim target is meaningfull then make > > it a separate patch. I am not conviced but I will not nack it it either. > > But it will make our life much easier if my over reclaim concern is > > right and we will need to revert it. Conceptually those two changes are > > independent anywa. > > > > Ok, fair point. But what about livelock than? Don't you think that we should > go back to something like in V1 patch to prevent it?
I am not sure what do you mean by the livelock here. -- Michal Hocko SUSE Labs
