On 28/11/2014 17:40, Kevin Wolf wrote: >> > I still believe we will end with some kind of coroutine bypass scheme >> > (even coroutines _do_ allocate an AIOCB, so calling bdrv_aio_readv >> > directly can help), but hey it cannot hurt to optimize hot code. > > Not sure if speculations about the future belong into commit messages, > but while it may turn out that a bypass is required in the end (I hope > it doesn't), the part about AIOCBs is wrong if you really consistently > use coroutines all the way down from the device to the block driver.
This is much harder from virtio-scsi than from virtio-blk, though. Paolo
