Since we are in cgroup write handler, so the cgrp is valid, so we
don't have to hold cgroup_mutex when calling cgroup_task_count().
One similar example is in cgroup_tasks_open().
Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx>
---
kernel/cgroup_debug.c | 2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/kernel/cgroup_debug.c b/kernel/cgroup_debug.c
index daca620..0c92d79 100644
--- a/kernel/cgroup_debug.c
+++ b/kernel/cgroup_debug.c
@@ -40,9 +40,7 @@ static u64 taskcount_read(struct cgroup *cont, struct cftype *cft)
{
u64 count;
- cgroup_lock();
count = cgroup_task_count(cont);
- cgroup_unlock();
return count;
}
--
1.5.4.rc3
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