Switch proc/self to nd_set_link()

{

	struct pid_namespace *ns = dentry->d_sb->s_fs_info;

	pid_t tgid = task_tgid_nr_ns(current, ns);

	char tmp[PROC_NUMBUF];

	if (!tgid)

		return ERR_PTR(-ENOENT);

	sprintf(tmp, "%d", task_tgid_nr_ns(current, ns));

	return ERR_PTR(vfs_follow_link(nd,tmp));

	char *name = ERR_PTR(-ENOENT);

	if (tgid) {

		name = __getname();

		if (!name)

			name = ERR_PTR(-ENOMEM);

		else

			sprintf(name, "%d", tgid);

	}

	nd_set_link(nd, name);

	return NULL;

}

static void proc_self_put_link(struct dentry *dentry, struct nameidata *nd,

				void *cookie)

{

	char *s = nd_get_link(nd);

	if (!IS_ERR(s))

		__putname(s);

}

static const struct inode_operations proc_self_inode_operations = {

	.readlink	= proc_self_readlink,

	.follow_link	= proc_self_follow_link,

	.put_link	= proc_self_put_link,

};

/*