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[2603:800c:1a02:1bae:a7fa:157f:969a:4cde]) by smtp.gmail.com with ESMTPSA id m3-20020a17090a858300b001e307d66123sm3429941pjn.25.2022.06.12.10.40.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 12 Jun 2022 10:40:26 -0700 (PDT) Sender: Tejun Heo Date: Sun, 12 Jun 2022 07:40:25 -1000 From: Tejun Heo To: Waiman Long Cc: Zefan Li , Johannes Weiner , Jonathan Corbet , Shuah Khan , cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Andrew Morton , Roman Gushchin , Phil Auld , Peter Zijlstra , Juri Lelli , Frederic Weisbecker , Marcelo Tosatti , Michal =?iso-8859-1?Q?Koutn=FD?= Subject: Re: [PATCH v11 3/8] cgroup/cpuset: Allow no-task partition to have empty cpuset.cpus.effective Message-ID: References: <20220510153413.400020-1-longman@redhat.com> <20220510153413.400020-4-longman@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220510153413.400020-4-longman@redhat.com> X-Spam-Status: No, score=-1.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Sorry about the long delay. On Tue, May 10, 2022 at 11:34:08AM -0400, Waiman Long wrote: > Once a partition with empty "cpuset.cpus.effective" is formed, no > new task can be moved into it until "cpuset.cpus.effective" becomes > non-empty. This is always true due to no-tasks-in-intermediate-cgroups requirement, right? Thanks. -- tejun