On Wed, Jan 20, 2010 at 12:37:51PM +0100, Kevin Wolf wrote: > Am 19.01.2010 22:15, schrieb Christoph Hellwig: > > If we go over the maximum number of iovecs support by syscall we get > > back EINVAL from the kernel which translate to I/O errors for the guest. > > > > Signed-off-by: Christoph Hellwig <h...@lst.de> > > Is this really enough? We don't check for IOV_MAX in any other place, so > can't we get a too big request directly from virtio-blk?
Currently the virtqueue is limited to 1024 iovecs, but I plan to put in some better infrastructure to deal with the queue limit. For now this patch fixes an issue that we see with real life setups.
