static int proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
static int proc_self_follow_link(struct dentry *dentry, struct nameidata *nd){	char tmp[30];	sprintf(tmp, "%d", current->tgid);	return vfs_follow_link(nd,tmp);}	