static int cgroup_max_depth_show(struct seq_file *seq, void *v)
{
	struct cgroup *cgrp = seq_css(seq)->cgroup;
	int depth = READ_ONCE(cgrp->max_depth);

	if (depth == INT_MAX)
		seq_puts(seq, "max\n");
	else
		seq_printf(seq, "%d\n", depth);

	return 0;
}
static int cgroup_max_depth_show(struct seq_file *seq, void *v)
{
	struct cgroup *cgrp = seq_css(seq)->cgroup;
	int depth = READ_ONCE(cgrp->max_depth);

	if (depth == INT_MAX)
		seq_puts(seq, "max\n");
	else
		seq_printf(seq, "%d\n", depth);

	return 0;
}