On Tue, Mar 28, 2023 at 06:16:38AM +0000, Yosry Ahmed wrote: > In some situations, we may end up calling memcg_rstat_updated() with a > value of 0, which means the stat was not actually updated. An example is > if we fail to reclaim any pages in shrink_folio_list(). > > Do not add the cgroup to the rstat updated tree in this case, to avoid > unnecessarily flushing it. > > Signed-off-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
