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[2603:800c:1a02:1bae:a7fa:157f:969a:4cde]) by smtp.gmail.com with ESMTPSA id k201-20020a6284d2000000b005822ce3b2acsm10560119pfd.115.2023.01.05.09.00.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Jan 2023 09:00:36 -0800 (PST) Sender: Tejun Heo Date: Thu, 5 Jan 2023 07:00:35 -1000 From: Tejun Heo To: Yu Kuai Cc: josef@toxicpanda.com, axboe@kernel.dk, cgroups@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, yukuai3@huawei.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: Re: [PATCH] blk-cgroup: fix missing pd_online_fn() while activating policy Message-ID: References: <20230103112833.2013432-1-yukuai1@huaweicloud.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230103112833.2013432-1-yukuai1@huaweicloud.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 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, Jan 03, 2023 at 07:28:33PM +0800, Yu Kuai wrote: > From: Yu Kuai > > If the policy defines pd_online_fn(), it should be called after > pd_init_fn(), like blkg_create(). > > Signed-off-by: Yu Kuai Acked-by: Tejun Heo However, it'd be useful to note the practical implication of the bug in the patch description, which seems like not much as discussed in the thread. Thanks. -- tejun