Careful with setting ro on shm. There are certain things (for instance LXC, which someone mentioned perhaps having a setup guide for), which require access to s

Careful with setting ro on shm. There are certain things (for instance LXC, which someone mentioned perhaps having a setup guide for), which require access to shm. Actually, thinking about it more (and others have commented on it already)... changing shm to read-only is pretty much just a bad idea in general to suggest.