tmpfs initializes tn_gen (generation number) on node creation, but fails to update it on vnode change. other filesystems set va_gen=0 or update it on changes (ufs, zfs) Fix: Patch attached with submission follows: How-To-Repeat: mount pefs or nfs (not tested) on top of tmpfs
Responsible Changed From-To: freebsd-bugs->freebsd-fs Over to maintainer(s).