> -----Original Message-----
> From: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
> Sent: Wednesday, October 2, 2024 12:02 PM
> To: Sridhar, Kanchana P <kanchana.p.sridhar@xxxxxxxxx>
> Cc: linux-kernel@xxxxxxxxxxxxxxx; linux-mm@xxxxxxxxx;
> hannes@xxxxxxxxxxx; nphamcs@xxxxxxxxx; chengming.zhou@xxxxxxxxx;
> ryan.roberts@xxxxxxx; Huang, Ying <ying.huang@xxxxxxxxx>;
> 21cnbao@xxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx; Feghali, Wajdi K
> <wajdi.k.feghali@xxxxxxxxx>; Gopal, Vinodh <vinodh.gopal@xxxxxxxxx>
> Subject: Re: [PATCH v1] mm: swap: Call count_mthp_stat() outside ifdef
> CONFIG_TRANSPARENT_HUGEPAGE.
>
> On Wed, Oct 2, 2024 at 10:30 AM Kanchana P Sridhar
> <kanchana.p.sridhar@xxxxxxxxx> wrote:
> >
> > This patch moves the call to count_mthp_stat() in
> count_swpout_vm_event()
> > to be outside the "ifdef CONFIG_TRANSPARENT_HUGEPAGE" based on
> changes
> > made in commit 246d3aa3e53151fa150f10257ddd8a4facd31a6a ("mm:
> cleanup
> > count_mthp_stat() definition").
> >
> > Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@xxxxxxxxx>
>
>
> I don't think this really makes a difference, but I will leave it to
> the THP folks to decide.
Sure, this makes sense.
>
> However, if you go through with this, please also do the same for the
> call in shrink_folio_list() for consistency.
Yes, will submit v2 with the same modification in shrink_folio_list().
Thanks,
Kanchana
>
> >
> > ---
> > mm/page_io.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/mm/page_io.c b/mm/page_io.c
> > index 4aa34862676f..a28d28b6b3ce 100644
> > --- a/mm/page_io.c
> > +++ b/mm/page_io.c
> > @@ -289,8 +289,8 @@ static inline void count_swpout_vm_event(struct
> folio *folio)
> > count_memcg_folio_events(folio, THP_SWPOUT, 1);
> > count_vm_event(THP_SWPOUT);
> > }
> > - count_mthp_stat(folio_order(folio), MTHP_STAT_SWPOUT);
> > #endif
> > + count_mthp_stat(folio_order(folio), MTHP_STAT_SWPOUT);
> > count_memcg_folio_events(folio, PSWPOUT, folio_nr_pages(folio));
> > count_vm_events(PSWPOUT, folio_nr_pages(folio));
> > }
> > --
> > 2.27.0
> >
