On Tue, 27 Jul 2021 18:22:43 -0700 Shakeel Butt <shakeelb@xxxxxxxxxx> wrote: > We used to have per-cpu memcg and lruvec stats and the readers have to > traverse and sum the stats from each cpu. This summing was racy and may > expose transient negative values. So, an explicit check was added to > avoid such scenarios. Now these stats are moved to rstat infrastructure > and are no more per-cpu, so we can remove the fixup for transient > negative values. We can't do anything about the same code in lruvec_page_state_local()?