Messages in this thread | | | Date | Thu, 20 Sep 2007 15:24:53 -0700 (PDT) | From | Nagendra Tomar <> | Subject | Re: [PATCH 2.6.23-rc6 Resending] NETWORKING : Edge Triggered EPOLLOUT events get missed for TCP sockets |
| |
--- Davide Libenzi <davidel@xmailserver.org> wrote:
> > Unfortunately f_op->poll() does not let the caller to specify the events > it's interested in, that would allow to split send/recevie wait queues and > better detect read/write cases. > The detection of a waitqueue_active(->sk_wr_sleep) would work fine in > detecting is someone is actually waiting for a write, w/out the false > positives triggered by the read-waiters. > That would be a very sane thing to do, but would require a big&dumb change > to all the ->poll around (that could be automated by a script - devices > not caring about the events hint can just continue to use the single queue > like they currently do), and a more critical and gradual change of all the > devices that wants to take advantage of it. > That way, no more magic bits are needed, and a simple waitqueue_active() > would tell you if someone is waiting for write-space events. >
I like this.
___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |