On 15/10/2019 16.53, Johannes Weiner wrote:
On Tue, Oct 15, 2019 at 11:09:59AM +0300, Konstantin Khlebnikov wrote:Mapped, dirty and writeback pages are also counted in per-lruvec stats. These counters needs update when page is moved between cgroups. Fixes: 00f3ca2c2d66 ("mm: memcontrol: per-lruvec stats infrastructure") Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> Please mention in the changelog that currently is nobody *consuming* the lruvec versions of these counters and that there is no user-visible effect. Thanks
Maybe just kill all these per-lruvec counters? I see only one user which have no alternative data source: WORKINGSET_ACTIVATE. This will save some memory: 32 * sizeof(long) * nr_nodes * nr_cpus bytes
