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vhost: handle wrap around in # of bufs math
authorShirley Ma <mashirle@us.ibm.com>
Wed, 20 Jul 2011 17:23:12 +0000 (10:23 -0700)
committerMichael S. Tsirkin <mst@redhat.com>
Thu, 21 Jul 2011 07:48:27 +0000 (10:48 +0300)
The meth for calculating the # of outstanding buffers gives
incorrect results when vq->upend_idx wraps around zero.
Fix that.

Signed-off-by: Shirley Ma <xma@us.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

No differences found
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