Re: [PATCH v2 7/9] workingset: memcg: sleep when flushing stats in workingset_refault()

[Michal Hocko]

On Tue 28-03-23 22:16:42, Yosry Ahmed wrote:
> In workingset_refault(), we call
> mem_cgroup_flush_stats_atomic_ratelimited() to flush stats within an
> RCU read section and with sleeping disallowed. Move the call above
> the RCU read section and allow sleeping to avoid unnecessarily
> performing a lot of work without sleeping.

Could you say few words why the flushing is done before counters are
updated rather than after (the RCU section)?
-- 
Michal Hocko
SUSE Labs