linux-kernel - Re: [PATCH v4 29/31] mm: memcontrol: prepare for reparenting non-hierarchical stats

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Message-ID: <aYvO2IaYnyWYDHTX@linux.dev>
Date: Tue, 10 Feb 2026 16:38:06 -0800
From: Shakeel Butt <shakeel.butt@...ux.dev>
To: Qi Zheng <qi.zheng@...ux.dev>
Cc: hannes@...xchg.org, hughd@...gle.com, mhocko@...e.com, 
	roman.gushchin@...ux.dev, muchun.song@...ux.dev, david@...nel.org, 
	lorenzo.stoakes@...cle.com, ziy@...dia.com, harry.yoo@...cle.com, yosry.ahmed@...ux.dev, 
	imran.f.khan@...cle.com, kamalesh.babulal@...cle.com, axelrasmussen@...gle.com, 
	yuanchu@...gle.com, weixugc@...gle.com, chenridong@...weicloud.com, mkoutny@...e.com, 
	akpm@...ux-foundation.org, hamzamahfooz@...ux.microsoft.com, apais@...ux.microsoft.com, 
	lance.yang@...ux.dev, bhe@...hat.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org, 
	cgroups@...r.kernel.org, Qi Zheng <zhengqi.arch@...edance.com>
Subject: Re: [PATCH v4 29/31] mm: memcontrol: prepare for reparenting
 non-hierarchical stats

On Tue, Feb 10, 2026 at 02:47:51PM +0800, Qi Zheng wrote:
> 
> 
> > 
> > Add the usage of these start and end functions in mod_memcg_state() and
> > mod_memcg_lruvec_state() in this patch.
> 
> Using these two function will change the behavior of mod_memcg_state()
> and mod_memcg_lruvec_state(), but LRU folios has not yet been
> reparented.
> 
> To ensure the patch itself is error-free, I chose to place the usage of
> these two function in patch #30.

Makes sense.

I think we are good with respect to this patch series (next version), it
will miss 7.0 but I think that is fine, 7.1 is not too far.

Thanks for pushing this through.