Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Sender: Tejun Heo <htejun@gmail.com>
Date:   Sun, 12 Jun 2022 17:12:51 -1000
From:   Tejun Heo <tj@kernel.org>
To:     Waiman Long <longman@redhat.com>
Cc:     Zefan Li <lizefan.x@bytedance.com>,
        Johannes Weiner <hannes@cmpxchg.org>,
        Jonathan Corbet <corbet@lwn.net>,
        Shuah Khan <shuah@kernel.org>, cgroups@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
        linux-kselftest@vger.kernel.org,
        Andrew Morton <akpm@linux-foundation.org>,
        Roman Gushchin <guro@fb.com>, Phil Auld <pauld@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Juri Lelli <juri.lelli@redhat.com>,
        Frederic Weisbecker <frederic@kernel.org>,
        Marcelo Tosatti <mtosatti@redhat.com>,
        Michal =?iso-8859-1?Q?Koutn=FD?= <mkoutny@suse.com>
Subject: Re: [PATCH v11 7/8] cgroup/cpuset: Update description of
 cpuset.cpus.partition in cgroup-v2.rst
Message-ID: <YqarMyNo9oHxhZFh@slm.duckdns.org>
References: <20220510153413.400020-1-longman@redhat.com>
 <20220510153413.400020-8-longman@redhat.com>
 <YqYnQ4U4t6j/3UaL@slm.duckdns.org>
 <404171dc-0da3-21f2-5003-9718f875e967@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <404171dc-0da3-21f2-5003-9718f875e967@redhat.com>
Precedence: bulk

Hello,

On Sun, Jun 12, 2022 at 11:02:38PM -0400, Waiman Long wrote:
> That is the behavior enforced by setting the CPU_EXCLUSIVE bit in cgroup v1.
> I haven't explicitly change it to make it different in cgroup v2. The major
> reason is that I don't want change to one cpuset to affect a sibling
> partition as it may make the code more complicate to validate if a partition
> is valid.

If at all possible, I'd really like to avoid situations where a parent can't
withdraw resources due to something that a descendant does.

Thanks.

-- 
tejun