RE: [PATCH v2] mm: swap: Call count_mthp_stat() outside ifdef CONFIG_TRANSPARENT_HUGEPAGE.

["Sridhar, Kanchana P" <kanchana.p.sridhar@intel.com>]

> -----Original Message-----
> From: Andrew Morton <akpm@linux-foundation.org>
> Sent: Wednesday, October 2, 2024 1:37 PM
> To: Sridhar, Kanchana P <kanchana.p.sridhar@intel.com>
> Cc: linux-kernel@vger.kernel.org; linux-mm@kvack.org;
> hannes@cmpxchg.org; yosryahmed@google.com; nphamcs@gmail.com;
> chengming.zhou@linux.dev; ryan.roberts@arm.com; Huang, Ying
> <ying.huang@intel.com>; 21cnbao@gmail.com; Feghali, Wajdi K
> <wajdi.k.feghali@intel.com>; Gopal, Vinodh <vinodh.gopal@intel.com>
> Subject: Re: [PATCH v2] mm: swap: Call count_mthp_stat() outside ifdef
> CONFIG_TRANSPARENT_HUGEPAGE.
> 
> On Wed,  2 Oct 2024 12:55:47 -0700 Kanchana P Sridhar
> <kanchana.p.sridhar@intel.com> wrote:
> 
> > This patch moves the call to count_mthp_stat() in
> count_swpout_vm_event()
> > and in shrink_folio_list() to be outside the
> > "ifdef CONFIG_TRANSPARENT_HUGEPAGE"
> 
> This is very apparent from reading the patch.  Changelogs and code
> comments should explain "why", and avoid explaining "what".
> 
> > based on changes made in commit
> > 246d3aa3e531 ("mm: cleanup count_mthp_stat() definition").
> 
> And I don't think that explains the reasons for this change either.
> 
> So please resend with a changelog which fully explains the reasons for
> making this alteration.

Thanks Andrew, for the comments. Sure, I will resend with these
suggestions incorporated!

Thanks,
Kanchana