When Matthew Garrett, well-known Linux kernel developer and ‎CoreOS principal security engineer, announced he was releasing a [Linux] kernel tree with patches that implement a BSD-style securelevel interface, I predicted people would say Garrett was forking Linux. I was right. They have. But, that's not what Garrett is doing.

First, Garrett wrote a blog post in response to Intel developer Sarah Sharp leaving the Linux kernel development community. Garrett, like Sharp, has had his own run-ins with Linus Torvalds and others on the Linux Kernel Mailing List (LKML).