Without further ado, the following was found: Issue: /proc/mounts → I</proc/mounts> "Indicate that the actions should only be taken on filesystems of the " "specified I<type>. More than one type may be specified in a comma-separated " "list. The list of filesystem types can be prefixed with B<no> to indicate " "that no action should be taken for all of the mentioned types. Note that " "B<umount> reads information about mounted filesystems from kernel (I</proc/" "mounts>) and filesystem names may be different than filesystem names used in " "the I</etc/fstab> (e.g., \"nfs4\" vs. \"nfs\")."
