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vhost-net: reduce vq polling on tx zerocopy
authorMichael S. Tsirkin <mst@redhat.com>
Thu, 1 Nov 2012 09:16:55 +0000 (09:16 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sat, 3 Nov 2012 01:29:58 +0000 (21:29 -0400)
It seems that to avoid deadlocks it is enough to poll vq before
 we are going to use the last buffer.  This is faster than
c70aa540c7a9f67add11ad3161096fb95233aa2e.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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