static void xt_table_seq_stop(struct seq_file *seq, void *v)
{
	u_int8_t af = (unsigned long)PDE_DATA(file_inode(seq->file));

	mutex_unlock(&xt[af].mutex);
}
static void xt_table_seq_stop(struct seq_file *seq, void *v)
{
	u_int8_t af = (unsigned long)PDE_DATA(file_inode(seq->file));

	mutex_unlock(&xt[af].mutex);
}