From: Peng Yu <yupeng0921@gmail.com>
To: Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>,
Chaitanya Kulkarni <kch@nvidia.com>
Cc: "Tejun Heo" <tj@kernel.org>,
"Johannes Weiner" <hannes@cmpxchg.org>,
"Michal Koutný" <mkoutny@suse.com>,
"Josef Bacik" <josef@toxicpanda.com>,
"Jens Axboe" <axboe@kernel.dk>,
"Maurizio Lombardi" <mlombard@arkamax.eu>,
cgroups@vger.kernel.org, linux-block@vger.kernel.org,
linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org,
"Peng Yu" <yupeng0921@gmail.com>
Subject: [PATCH v6 2/3] cgroup: export cgroup_e_css()
Date: Sun, 27 Sep 2026 23:14:16 -0700 [thread overview]
Message-ID: <20260928061417.1574676-3-yupeng0921@gmail.com> (raw)
In-Reply-To: <20260928061417.1574676-1-yupeng0921@gmail.com>
The nvmet invokes the cgroup_e_css for each bio and under
the rcu protection.
Signed-off-by: Peng Yu <yupeng0921@gmail.com>
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
next prev parent reply other threads:[~2026-09-28 6:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-28 6:14 [PATCH v6 0/3] nvmet: add cgroup_id to charge namespace I/O to a cgroup Peng Yu
2026-09-28 6:14 ` [PATCH v6 1/3] cgroup: track the effective css in each cgroup Peng Yu
2026-09-28 6:14 ` Peng Yu [this message]
2026-09-28 6:14 ` [PATCH v6 3/3] nvmet: add cgroup_id to charge namespace I/O to a cgroup Peng Yu
2026-09-28 18:24 ` [PATCH v6 0/3] " Tejun Heo
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