> Main idea here - we never flash last (struct tty_buffer) in the > active buffer. Only data for ldisc. (tty->buf.head->read = > tty->buf.head->commit). At that moment driver can collect(write) data > in buffer without conflict.
This one I agree with (sorry it took a while to get to, I wanted to sit and think carefully about it as it is subtle and clever) Can you generate a single patch which reverts the unneeded locks and adds this instead. Add a Signed-off-by and send it to Greg to get it into 3.8/3.9 somewhere. Thanks Alan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
