cgroup: Update out-of-date comment in cgroup_migrate()

Commit 674b745e22 ("cgroup: remove rcu_read_lock()/rcu_read_unlock()
in critical section of spin_lock_irq()") has removed the rcu_read_lock,
which makes the comment out-of-date, so update it.

tj: Updated the comment a bit.

Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Xiu Jianfeng 2023-05-24 14:54:31 +08:00 • committed by Tejun Heo
commit 659db0789c