From: Jason Wang <jasow...@redhat.com>
Date: Fri, 15 Feb 2019 15:53:24 +0800
> When fail, translate_desc() returns negative value, otherwise the
> number of iovs. So we should fail when the return value is negative
> instead of a blindly check against zero.
>
> Reported-by: Stephen Hemminger <step...@networkplumber.org>
> Fixes: cc5e71075947 ("vhost: log dirty page correctly")
> Signed-off-by: Jason Wang <jasow...@redhat.com>
Jason, please put the Fixes tag first.
Thank you.
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