-/**
- * pty_space - report space left for writing
- * @to: tty we are writing into
- *
- * Limit the buffer space used by ptys to 8k.
- */
-
-static int pty_space(struct tty_struct *to)
-{
- int n = tty_buffer_space_avail(to->port);
- return min(n, 8192);
-}
-