linux-kernel - Re: [PATCH v2 bpf-next 3/5] bpf: Mark cgroup_subsys

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Message-ID: <aFYctPFTPOg97cjA@slm.duckdns.org>
Date: Fri, 20 Jun 2025 16:45:08 -1000
From: Tejun Heo <tj@...nel.org>
To: Song Liu <song@...nel.org>
Cc: bpf@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org,
	kernel-team@...a.com, andrii@...nel.org, eddyz87@...il.com,
	ast@...nel.org, daniel@...earbox.net, martin.lau@...ux.dev,
	viro@...iv.linux.org.uk, brauner@...nel.org, jack@...e.cz,
	kpsingh@...nel.org, mattbobrowski@...gle.com, amir73il@...il.com,
	gregkh@...uxfoundation.org, daan.j.demeyer@...il.com
Subject: Re: [PATCH v2 bpf-next 3/5] bpf: Mark cgroup_subsys_state->cgroup
 RCU safe

On Thu, Jun 19, 2025 at 03:01:12PM -0700, Song Liu wrote:
> Mark struct cgroup_subsys_state->cgroup as safe under RCU read lock. This
> will enable accessing css->cgroup from a bpf css iterator.
> 
> Signed-off-by: Song Liu <song@...nel.org>

Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun