> Yeah, I'm guestimating O on a per device basis, but I agree that the > current ratio limiting is quite crude. I'm not at all sorry to see > throttle_vm_writeback() go, I just wanted to make a point that what it > does is not quite without merrit - we agree that it can be done better > differently.
Yes. So what is it to be? Is limiting by device queues enough? Or do we need some global limit? If so, the cleanest way I see is to separately account and limit swap-writeback pages, so the global counters don't interfere with the limiting. This shouldn't be hard to do, as we have the per-bdi writeback counting infrastructure already, and also a pseudo bdi for swap in swapper_space.backing_dev_info. Miklos - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
