Messages in this thread | | | Date | Wed, 28 Jul 2021 12:43:26 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] memcg: cleanup racy sum avoidance code |
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On Tue, 27 Jul 2021 18:22:43 -0700 Shakeel Butt <shakeelb@google.com> 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()?
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