linux-kernel - Re: [PATCH mm-new v3] mm/memcontrol: Add memory.stat

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Message-ID: <aRINDrnnI1HVvU1p@slm.duckdns.org>
Date: Mon, 10 Nov 2025 06:04:30 -1000
From: Tejun Heo <tj@...nel.org>
To: Michal Koutný <mkoutny@...e.com>
Cc: Leon Huang Fu <leon.huangfu@...pee.com>, linux-mm@...ck.org,
	hannes@...xchg.org, mhocko@...nel.org, roman.gushchin@...ux.dev,
	shakeel.butt@...ux.dev, muchun.song@...ux.dev,
	akpm@...ux-foundation.org, joel.granados@...nel.org, jack@...e.cz,
	laoar.shao@...il.com, mclapinski@...gle.com, kyle.meyer@....com,
	corbet@....net, lance.yang@...ux.dev, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: [PATCH mm-new v3] mm/memcontrol: Add memory.stat_refresh for
 on-demand stats flushing

Hello,

On Mon, Nov 10, 2025 at 02:50:11PM +0100, Michal Koutný wrote:
> All in all, I'd like to have more backing data on insufficiency of (all
> the) rstat optimizations before opening explicit flushes like this
> (especially when it's meant to be exposed by BPF already).

+1. If the current behavior introduces errors too significant to ignore, I'd
much rather see it fixed from the implementation side rather than exposing
internal operation details like this.

Thanks.

-- 
tejun