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f49843afde
This patch adds a test which demonstrates how css_task iter can be combined with cgroup iter and it won't cause deadlock, though cgroup iter is not sleepable. Signed-off-by: Chuyi Zhou <zhouchuyi@bytedance.com> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20231031050438.93297-3-zhouchuyi@bytedance.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>