We have enum named MEMFLAGS to hold NMT flag type. I think the name should be singular as it can only hold one type and plural seems to imply that more than one type can be used.

The all capitals name seems not consistent with rest of hotspot, usually they are named OneTwo for 2 word names, not ONETWO.

After a lively long discussion, we have arrived at MemTag

It will touch quite a few files, but is a simple renaming operation with low risk.