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[2603:800c:1a02:1bae:a7fa:157f:969a:4cde]) by smtp.gmail.com with ESMTPSA id u24-20020a631418000000b0047022e07035sm1348111pgl.47.2022.11.30.13.08.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Nov 2022 13:08:14 -0800 (PST) Sender: Tejun Heo Date: Wed, 30 Nov 2022 11:08:13 -1000 From: Tejun Heo To: Kemeng Shi Cc: josef@toxicpanda.com, axboe@kernel.dk, cgroups@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 01/10] blk-throttle: correct stale comment in throtl_pd_init Message-ID: References: <20221129030147.27400-1-shikemeng@huawei.com> <20221129030147.27400-2-shikemeng@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221129030147.27400-2-shikemeng@huawei.com> X-Spam-Status: No, score=-1.7 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 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 On Tue, Nov 29, 2022 at 11:01:38AM +0800, Kemeng Shi wrote: > On the default hierarchy (cgroup2), the throttle interface files don't > exist in the root cgroup, so the ablity to limit the whole system > by configuring root group is not existing anymore. In general, cgroup > doesn't wanna be in the business of restricting resources at the > system level, so correct the stale comment that we can limit whole > system to we can only limit subtree. > > Signed-off-by: Kemeng Shi Acked-by: Tejun Heo > + * read_bps limit is set on a "parent" group, summary bps of > + * "parent" group and its subtree groups can't exceed 16M for the but why the quotes around parent? -- tejun