They don't make much difference: the easier fix is use gcc 4.8 which drops stack required across virtio block's virtio_queue_rq down to that kmalloc in virtio_ring from 528 to 392 bytes.
Still, these (*lightly tested*) patches reduce to 432 bytes, even for gcc 4.6.4. Posted here FYI. Cheers, Rusty. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/