Bruce, David, I just submitted a patch with an Acked-by from Konstantin, using his current (Huawei) email address, and it triggered the following checkpatch warning: Konstantin Ananyev mail differs from primary mail, please fix the commit message or update .mailmap.
Some people have more than one active email address, so this checkpatch behavior is wrong. Med venlig hilsen / Kind regards, -Morten Brørup