In message <3C888284.8030206@loewe-komp.de> you write:
> Rusty Russell wrote:
> > To clarify: I'd love this, but rwlocks in the kernel aren't even
> > vaguely fair. With a steady stream of overlapping readers, a writer
> > will never get the lock.
> >
> > Hope that clarifies,
>
>
> But you talk about the current implementation, don't you?
> Is there something to prevent an implementation of rwlocks in the
> kernel, where a wrlock will lock (postponed) further rdlock requests?
It's proven hard to do without performance impact. Also, we can't do
rw semaphores in a single word: you need two.
Disproving me by implementation VERY welcome!
Hope that helps,
Rusty.
-- Anyone who quotes me in their sig is an idiot. -- Rusty Russell. - 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/
This archive was generated by hypermail 2b29 : Fri Mar 15 2002 - 22:00:12 EST