kerneltrap.org no longer works, update to a working reference
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Clarify the purpose of the LSM interface with some brief examples and
pointers to additional documentation.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <jmorris@namei.org>