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