From: Daniel Borkmann
Date: Sat, 11 Mar 2017 16:55:49 +0100
> Improve bpf_{prog,jit_binary}_{un,}lock_ro() by throwing a
> one-time warning in case of an error when the image couldn't
> be set read-only, and also mark struct bpf_prog as locked when
> bpf_prog_lock_ro() was called.
>
> Reason for
Improve bpf_{prog,jit_binary}_{un,}lock_ro() by throwing a
one-time warning in case of an error when the image couldn't
be set read-only, and also mark struct bpf_prog as locked when
bpf_prog_lock_ro() was called.
Reason for the latter is that bpf_prog_unlock_ro() is called from
various places inc
