Re: [PATCH] mm: memcontrol: propagate NMI slab stats to memcg vmstats

[Harry Yoo]

On 5/18/26 5:28 PM, Alexandre Ghiti wrote:
> flush_nmi_stats() drains per-node NMI slab atomics into the per-node
> lruvec_stats, but does not propagate them to the memcg-level vmstats.
>
> For non NMI case, account_slab_nmi_safe() calls mod_memcg_lruvec_state()
> which updates both per-node lruvec_stats and memcg-level vmstats, so
> flush_nmi_stats() needs to flush to per-node lruvec_stats as well as
> memcg-level vmstats.
>
> So fix this by flushing to the memcg-level vmstats for NMI too.
>
> Fixes: 940b01fc8dc1 ("memcg: nmi safe memcg stats for specific archs")
> Cc: stable@xxxxxxxxxxxxxxx
> Acked-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>
> Signed-off-by: Alexandre Ghiti <alex@xxxxxxxx>
> ---

Looks good to me,
Reviewed-by: Harry Yoo (Oracle) <harry@xxxxxxxxxx>

--
Cheers,
Harry / Hyeonggon