On 21 Jul 2021, at 2:39, Huang Ying wrote:

> From: Yang Shi <yang.shi@linux.alibaba.com>
>
> Account the number of demoted pages.
>
> Add pgdemote_kswapd and pgdemote_direct VM counters showed in
> /proc/vmstat.
>
> [ daveh:
>    - __count_vm_events() a bit, and made them look at the THP
>      size directly rather than getting data from migrate_pages()
> ]
>
> Link: https://lkml.kernel.org/r/20210715055145.195411-6-ying.huang@intel.com
> Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com>
> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
> Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
> Reviewed-by: Yang Shi <shy828301@gmail.com>
> Reviewed-by: Wei Xu <weixugc@google.com>
> Cc: Michal Hocko <mhocko@suse.com>
> Cc: Zi Yan <ziy@nvidia.com>
> Cc: David Rientjes <rientjes@google.com>
> Cc: Dan Williams <dan.j.williams@intel.com>
> Cc: David Hildenbrand <david@redhat.com>
> Cc: Oscar Salvador <osalvador@suse.de>
> Cc: Greg Thelen <gthelen@google.com>
> Cc: Keith Busch <kbusch@kernel.org>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> ---
>  include/linux/vm_event_item.h | 2 ++
>  mm/vmscan.c                   | 5 +++++
>  mm/vmstat.c                   | 2 ++
>  3 files changed, 9 insertions(+)
>

LGTM. Reviewed-by: Zi Yan <ziy@nvidia.com>


—
Best Regards,
Yan, Zi