linux-kernel - Re: [PATCH v3 2/2] vmscan,cgroup: apply mems

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Message-ID: <aAbqQXJFCIb3Mscq@gourry-fedora-PF4VCD3F>
Date: Mon, 21 Apr 2025 21:00:49 -0400
From: Gregory Price <gourry@...rry.net>
To: Waiman Long <llong@...hat.com>
Cc: Shakeel Butt <shakeel.butt@...ux.dev>, linux-mm@...ck.org,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-team@...a.com, hannes@...xchg.org, mhocko@...nel.org,
	roman.gushchin@...ux.dev, muchun.song@...ux.dev, tj@...nel.org,
	mkoutny@...e.com, akpm@...ux-foundation.org
Subject: Re: [PATCH v3 2/2] vmscan,cgroup: apply mems_effective to reclaim

On Mon, Apr 21, 2025 at 08:35:15PM -0400, Waiman Long wrote:
> 
> Your current patch is ignoring v1 as css will be NULL. It only works for v2
> with a unified hierarchy unless some users explicitly force cpuset and memcg
> v1 to be in the same hierarchy. You can certainly ignore v1 by using
> cpuset_v2() check.
> 

I'll whip this up and get it out this evening.

~Gregory