static void cgroup_file_release(struct kernfs_open_file *of)
{
	struct cftype *cft = of_cft(of);
	struct cgroup_file_ctx *ctx = of->priv;

	if (cft->release)
		cft->release(of);
	put_cgroup_ns(ctx->ns);
	kfree(ctx);
}
static void cgroup_file_release(struct kernfs_open_file *of)
{
	struct cftype *cft = of_cft(of);
	struct cgroup_file_ctx *ctx = of->priv;

	if (cft->release)
		cft->release(of);
	put_cgroup_ns(ctx->ns);
	kfree(ctx);
}