It was introduced for memcg to iterate cgroup hierarchy without holding cgroup_mutex, but soon after that it was replaced with a lockless way in memcg. No one used hierarchy_mutex since that, so remove it. Signed-off-by: Li Zefan <lizefan@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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.. | ||
00-INDEX | ||
blkio-controller.txt | ||
cgroup_event_listener.c | ||
cgroups.txt | ||
cpuacct.txt | ||
cpusets.txt | ||
devices.txt | ||
freezer-subsystem.txt | ||
memcg_test.txt | ||
memory.txt | ||
net_prio.txt | ||
resource_counter.txt |