The get_maintainer.pl script can be given a patch file or list of pathnames and will look at the MAINTAINERS file for different code subsections and the developers that are maintaining those sections. If no maintainer is found, it will also check the git commit history and "git blame" to see which developers were active on the specified file(s) and use them.

It would be useful to have this in the Lustre tree to make it easier to find reviewers for the code.