On Wed, 14 Oct 2009, Alan Cox wrote: > > Stop a moment. The code wasn't designed to permit two paralle calls of > flush_to_ldisc to the same tty. That was always forbidden when that code > was designed. No, the code was clearly _designed_ for it - that's the whole and only point of the tty->buf.head = NULL; line. But it's certainly true that it just never happened before. At least for the !low_latency case, I'm not so sure about the low_latency=1 case, but I haven't checked either - it would depend on any higher-level serialization. Linus -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html