linux-kernel - Re: [PATCH v2 0/4] cgroup: nmi safe css_rstat

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Message-ID: <aFBfNRVAyE1FU9aQ@slm.duckdns.org>
Date: Mon, 16 Jun 2025 08:15:17 -1000
From: Tejun Heo <tj@...nel.org>
To: Shakeel Butt <shakeel.butt@...ux.dev>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	JP Kobryn <inwardvessel@...il.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...nel.org>,
	Roman Gushchin <roman.gushchin@...ux.dev>,
	Muchun Song <muchun.song@...ux.dev>,
	Vlastimil Babka <vbabka@...e.cz>,
	Alexei Starovoitov <ast@...nel.org>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Michal Koutný <mkoutny@...e.com>,
	Harry Yoo <harry.yoo@...cle.com>,
	Yosry Ahmed <yosry.ahmed@...ux.dev>, bpf@...r.kernel.org,
	linux-mm@...ck.org, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Meta kernel team <kernel-team@...a.com>
Subject: Re: [PATCH v2 0/4] cgroup: nmi safe css_rstat_updated

Hello,

On Wed, Jun 11, 2025 at 03:15:28PM -0700, Shakeel Butt wrote:
> Shakeel Butt (4):
>   cgroup: support to enable nmi-safe css_rstat_updated
>   cgroup: make css_rstat_updated nmi safe
>   cgroup: remove per-cpu per-subsystem locks
>   memcg: cgroup: call css_rstat_updated irrespective of in_nmi()

The patches look good to me. How should it be routed? Should I take all
four, just the first three or would it better to route all through -mm?

Thanks.

-- 
tejun