Hello, On Sun, Mar 14, 2021 at 01:58:33PM -0700, Shakeel Butt wrote: > > If my understanding were correct, what Tejun suggested is to add a fast > > read interface to rstat to be used in hot path. And its accuracy is > > similar as that of traditional per-CPU counter. But if we can regularly > > update the lruvec rstat with something like vmstat_update(), that should > > be OK for the issue described in this patch. > > > > This is also my understanding. Tejun, please correct us if we misunderstood you. Yeah, that was what I had on mind. Instead of always flushing on read, have a variant where flushing is explicit and trigger that periodically (or whichever way appropriate). Thanks. -- tejun
