kevent(2): EVFILT_VNODE filter miscounting hardlinks?

[rudolf <netbsd%eq.cz@localhost>]

Hi,

if there is a EVFILT_VNODE filter watching a directory (e.g. 
"/tmp/watchdir"), it does not return NOTE_LINK (it only returns 
NOTE_WRITE) upon a move of a directory from or into the watched 
directory (e.g. "mkdir /tmp/foo; mv /tmp/foo /tmp/watchdir/"). This 
seems like a bug to me. Should I submit a PR?

Note: the filter correctly returns NOTE_LINK (and NOTE_WRITE) upon a 
mkdir in the watched directory (e.g. "mkdir /tmp/watchdir/bar").

I've observed this behavior under NetBSD 6.1_STABLE amd64 using a test 
program from PR kern/34267.

Thanks,

r.