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authorJason Wang <jasowang@redhat.com>2013-09-02 10:40:58 +0200
committerDavid S. Miller <davem@davemloft.net>2013-09-04 04:46:57 +0200
commitc49e4e573be86acd36c747511ea5dc76be122206 (patch)
tree682e11f8da283fb6ddc3ab5bd8bbae3486726afd /virt
parentvhost_net: use vhost_add_used_and_signal_n() in vhost_zerocopy_signal_used() (diff)
downloadlinux-c49e4e573be86acd36c747511ea5dc76be122206.tar.xz
linux-c49e4e573be86acd36c747511ea5dc76be122206.zip
vhost: switch to use vhost_add_used_n()
Let vhost_add_used() to use vhost_add_used_n() to reduce the code duplication. To avoid the overhead brought by __copy_to_user(). We will use put_user() when one used need to be added. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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