[Query] Update email-id in kernel source

Hi guys,

I have recently changed my company and am required to update my email address in kernel source.

I can only see one way of doing that:
- Do a git grep, update all files, commit and post the patch.

Is there any better way of doing this that git provides, by which even 'git log' would show the latest id available? I heard from a friend but don't know if it exists.

-- Viresh