read and even write access to all these otherwise unmappable files,
which is quite likely a major security problem.
+ * tmpfs mounts automatically created by systemd (/tmp, /run, /dev/shm,
+ and others) now have a size and inode limits applied (50% of RAM for
+ /tmp, 10% of RAM for /dev/shm, etc.)
+
* nss-mymachines lost support for resolution of users and groups, and
now only does resolution of hostnames. This functionality is now
provided by nss-systemd. Thus, the 'mymachines' entry should be