The serviceability mailing list should be notified of changes to the following files:

src/hotspot/share/services/heapDumper.cpp
src/hotspot/share/services/heapDumper.hpp
src/hotspot/share/services/heapDumperCompression.cpp
src/hotspot/share/services/heapDumperCompression.hpp
src/hotspot/share/services/diagnosticArgument.cpp
src/hotspot/share/services/diagnosticArgument.hpp
src/hotspot/share/services/diagnosticCommand.cpp
src/hotspot/share/services/diagnosticCommand.hpp
src/hotspot/share/services/diagnosticFramework.cpp
src/hotspot/share/services/diagnosticFramework.hpp

If I correctly understand how the pattern matching works, I think the following line in config/mailinglist/rules/jdk.json:

            "src/hotspot/share/services/(attach|management)",

needs to be updated to:

            "src/hotspot/share/services/(attach|management|heapdumper|diagnostic)",