Ummunotify relays MMU notifier events to userspace. This is useful for libraries that need to track the memory mapping of applications; for example, MPI implementations using RDMA want to cache memory registrations for performance, but tracking all possible crazy cases such as when, say, the FORTRAN runtime frees memory is impossible without kernel help. lssndrbarbieri@gmail.com Alessandro Barbieri Portals4/ummunotify