I'm not sure. The solaris implementation of this function (src/unix/sunos.c) doesn't contain the same filtering logic as linux-core.c - this makes me hesitant to just add it to AIX "because".

Is there a test case that you are aware of that pushes on this code and exposes the 'extra events'? 

For now, I'd rather leave it as is and deal with issues as we go forwards.