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[73.169.192.12]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a0b9892dbfsm18864088a91.11.2026.09.27.23.14.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 27 Sep 2026 23:14:24 -0700 (PDT) From: Peng Yu To: Christoph Hellwig , Sagi Grimberg , Chaitanya Kulkarni Cc: Tejun Heo , Johannes Weiner , =?UTF-8?q?Michal=20Koutn=C3=BD?= , Josef Bacik , Jens Axboe , Maurizio Lombardi , cgroups@vger.kernel.org, linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Yu Subject: [PATCH v6 2/3] cgroup: export cgroup_e_css() Date: Sun, 27 Sep 2026 23:14:16 -0700 Message-ID: <20260928061417.1574676-3-yupeng0921@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260928061417.1574676-1-yupeng0921@gmail.com> References: <20260928061417.1574676-1-yupeng0921@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260927_231425_960962_2E6D9442 X-CRM114-Status: UNSURE ( 8.65 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org The nvmet invokes the cgroup_e_css for each bio and under the rcu protection. Signed-off-by: Peng Yu Assisted-by: Claude:claude-fable-5 [Claude Code] Assisted-by: Claude:claude-opus-5-5 [Claude Code] --- kernel/cgroup/cgroup.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 69b0f0cf2f3e..5a1708ed6b23 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -554,6 +554,7 @@ struct cgroup_subsys_state *cgroup_e_css(struct cgroup *cgrp, return rcu_dereference_check(cgrp->e_css[ss->id], lockdep_is_held(&cgroup_mutex)); } +EXPORT_SYMBOL_GPL(cgroup_e_css); /** * cgroup_get_e_css - get a cgroup's effective css for the specified subsystem -- 2.53.0