static void *proc_follow_link(struct dentry *dentry, struct nameidata *nd)
{
	nd_set_link(nd, PDE(dentry->d_inode)->data);
	return NULL;
}
static void *proc_follow_link(struct dentry *dentry, struct nameidata *nd)
{
	nd_set_link(nd, PDE(dentry->d_inode)->data);
	return NULL;
}