[PATCH] vhost: fix missing copy length in batched copies

[Thomas Monjalon]

> > This patch fixes missing the assignement of the copy length when doing
> > batched copies in the sync dequeue path.
> > 
> > Fixes: cd79d1b030bd ("vhost: fix unnecessary dirty page logging")
> > 
> > Suggested-by: Chenbo Xia <chenbo.xia at intel.com>
> > Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> > ---
> 
> Hi Maxime, 
> 
> regression test with this patch yesterday, it does not effect the other test cases.
> 
> Tested-by: Wei Ling <weix.ling at intel.com>

Applied, thanks.