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(parent: 5704440) | patch
vhost_net: determine whether or not to use zerocopy at one time
authorJason Wang <jasowang@redhat.com>
Mon, 2 Sep 2013 08:40:59 +0000 (16:40 +0800)
committerDavid S. Miller <davem@davemloft.net>
Wed, 4 Sep 2013 02:46:57 +0000 (22:46 -0400)
commit47789bfc16fb06df7713b38bad714498832fe071
treec1a9325b2a7579c65a5accf8f05d3a9cb2f048adtree | snapshot
parent5704440ecb2f86a87e9c7da8a80b9ac079c717a8commit | diff
vhost_net: determine whether or not to use zerocopy at one time

Currently, even if the packet length is smaller than VHOST_GOODCOPY_LEN, if
upend_idx != done_idx we still set zcopy_used to true and rollback this choice
later. This could be avoided by determining zerocopy once by checking all
conditions at one time before.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/vhost/net.c diff | blob | history
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