Without further ado, the following was found: Issue: unmounts → umounts "Note that a mount's propagation type determines whether mounts and unmounts " "of mounts I<immediately under> the mount are propagated. Thus, the " "propagation type does not affect propagation of events for grandchildren and " "further removed descendant mounts. What happens if the mount itself is " "unmounted is determined by the propagation type that is in effect for the " "I<parent> of the mount."