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98582
2015 Feb 10
4
[PATCH RFC v5 net-next 1/6] virtio_ring: fix virtqueue_enable_cb() when only 1 buffers were pending
Jason Wang <jasowang at redhat.com> writes:
> We currently does:
>
> bufs = (avail->idx - last_used_idx) * 3 / 4;
>
> This is ok now since we only try to enable the delayed callbacks when
> the queue is about to be full. This may not work well when there is
> only one pending buffer in the virtqueue (this may be the case after
> tx interrupt was enabled). Since