Re: [PATCH] virtio-blk: make the queue depth the max supportable by the hypervisor

[Venkatesh Srinivas]

> And I rewrote it substantially, mainly to take
> VIRTIO_RING_F_INDIRECT_DESC into account.
>
> As QEMU sets the vq size for PCI to 128, Venkatash's patch wouldn't
> have made a change.  This version does (since QEMU also offers
> VIRTIO_RING_F_INDIRECT_DESC.

That divide-by-2 produced the same queue depth as the prior
computation in QEMU was deliberate -- but raising it to 128 seems
pretty reasonable.

Signed-off-by: Venkatesh Srinivas <venkateshs@xxxxxxxxxx>

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