linux-kernel - Re: [PATCH/for-next 1/2] cgroup/cpuset: Defer housekeeping_update() call from CPU hotplug to task

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aXpLEcOFhuGYGPY-@slm.duckdns.org>
Date: Wed, 28 Jan 2026 07:44:49 -1000
From: Tejun Heo <tj@...nel.org>
To: Waiman Long <longman@...hat.com>
Cc: Chen Ridong <chenridong@...weicloud.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Koutný <mkoutny@...e.com>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Juri Lelli <juri.lelli@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Anna-Maria Behnsen <anna-maria@...utronix.de>,
	Frederic Weisbecker <frederic@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>, Shuah Khan <shuah@...nel.org>,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org
Subject: Re: [PATCH/for-next 1/2] cgroup/cpuset: Defer housekeeping_update()
 call from CPU hotplug to task_work

On Tue, Jan 27, 2026 at 11:42:50PM -0500, Waiman Long wrote:
> +static void isolation_task_work_fn(struct callback_head *cb)
> +{
> +	cpuset_full_lock();
> +	__update_isolation_cpumasks(true);
> +	cpuset_full_lock();
                    ^
                    unlock?

Thanks.

-- 
tejun