seq_buf: Add seq_buf_terminate() API

	return min(s->len, s->size);

}

/**

 * seq_buf_terminate - Make sure buffer is nul terminated

 * @s: the seq_buf descriptor to terminate.

 *

 * This makes sure that the buffer in @s is nul terminated and

 * safe to read as a string.

 *

 * Note, if this is called when the buffer has overflowed, then

 * the last byte of the buffer is zeroed, and the len will still

 * point passed it.

 *

 * After this function is called, s->buffer is safe to use

 * in string operations.

 */

static inline void seq_buf_terminate(struct seq_buf *s)

{

	if (WARN_ON(s->size == 0))

		return;

	if (seq_buf_buffer_left(s))

		s->buffer[s->len] = 0;

	else

		s->buffer[s->size - 1] = 0;

}

/**

 * seq_buf_get_buf - get buffer to write arbitrary data to

 * @s: the seq_buf handle