linux-kernel - RE: [PATCH v6 3/3] mm: swap: Count successful mTHP ZSWAP stores in sysfs mTHP zswpout stats.

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Message-ID: <SJ0PR11MB56787D663020677A0448D906C96C2@SJ0PR11MB5678.namprd11.prod.outlook.com>
Date: Fri, 20 Sep 2024 02:32:39 +0000
From: "Sridhar, Kanchana P" <kanchana.p.sridhar@...el.com>
To: Nhat Pham <nphamcs@...il.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>, "hannes@...xchg.org"
	<hannes@...xchg.org>, "yosryahmed@...gle.com" <yosryahmed@...gle.com>,
	"chengming.zhou@...ux.dev" <chengming.zhou@...ux.dev>,
	"usamaarif642@...il.com" <usamaarif642@...il.com>, "ryan.roberts@....com"
	<ryan.roberts@....com>, "Huang, Ying" <ying.huang@...el.com>,
	"21cnbao@...il.com" <21cnbao@...il.com>, "akpm@...ux-foundation.org"
	<akpm@...ux-foundation.org>, "Zou, Nanhai" <nanhai.zou@...el.com>, "Feghali,
 Wajdi K" <wajdi.k.feghali@...el.com>, "Gopal, Vinodh"
	<vinodh.gopal@...el.com>, "Sridhar, Kanchana P"
	<kanchana.p.sridhar@...el.com>
Subject: RE: [PATCH v6 3/3] mm: swap: Count successful mTHP ZSWAP stores in
 sysfs mTHP zswpout stats.

> -----Original Message-----
> From: Nhat Pham <nphamcs@...il.com>
> Sent: Thursday, August 29, 2024 5:20 PM
> To: Sridhar, Kanchana P <kanchana.p.sridhar@...el.com>
> Cc: linux-kernel@...r.kernel.org; linux-mm@...ck.org;
> hannes@...xchg.org; yosryahmed@...gle.com;
> chengming.zhou@...ux.dev; usamaarif642@...il.com;
> ryan.roberts@....com; Huang, Ying <ying.huang@...el.com>;
> 21cnbao@...il.com; akpm@...ux-foundation.org; Zou, Nanhai
> <nanhai.zou@...el.com>; Feghali, Wajdi K <wajdi.k.feghali@...el.com>;
> Gopal, Vinodh <vinodh.gopal@...el.com>
> Subject: Re: [PATCH v6 3/3] mm: swap: Count successful mTHP ZSWAP stores
> in sysfs mTHP zswpout stats.
> 
> On Thu, Aug 29, 2024 at 2:27 PM Kanchana P Sridhar
> <kanchana.p.sridhar@...el.com> wrote:
> >
> > Add a new MTHP_STAT_ZSWPOUT entry to the sysfs mTHP stats so that
> > per-order mTHP folio ZSWAP stores can be accounted.
> 
> Can you update Documentation/admin-guide/mm/transhuge.rst?

Certainly, will do so!

> 
> 1. New entry for zswpout.
> 
> 2. Probably should clarify the semantics of swpout too - this does not
> include zswap right?

Sure. And yes, this does not include zswap.

Thanks,
Kanchana