doc: ReSTify LoadPin.txt

Adjusts for ReST markup and moves under LSM admin guide.

Signed-off-by: Kees Cook <[e-mail]>
Signed-off-by: Jonathan Corbet <[e-mail]>

Documentation/admin-guide/LSM/index.rst

···
    :maxdepth: 1
 
    apparmor
+   LoadPin
    SELinux
    tomoyo
    Yama

Documentation/security/LoadPin.txt Documentation/admin-guide/LSM/LoadPin.rst

···
+=======
+LoadPin
+=======
+
 LoadPin is a Linux Security Module that ensures all kernel-loaded files
 (modules, firmware, etc) all originate from the same filesystem, with
 the expectation that such a filesystem is backed by a read-only device
···
 and/or unchangeable filesystem to enforce module and firmware loading
 restrictions without needing to sign the files individually.
 
-The LSM is selectable at build-time with CONFIG_SECURITY_LOADPIN, and
+The LSM is selectable at build-time with ``CONFIG_SECURITY_LOADPIN``, and
 can be controlled at boot-time with the kernel command line option
-"loadpin.enabled". By default, it is enabled, but can be disabled at
-boot ("loadpin.enabled=0").
+"``loadpin.enabled``". By default, it is enabled, but can be disabled at
+boot ("``loadpin.enabled=0``").
 
 LoadPin starts pinning when it sees the first file loaded. If the
 block device backing the filesystem is not read-only, a sysctl is
-created to toggle pinning: /proc/sys/kernel/loadpin/enabled. (Having
+created to toggle pinning: ``/proc/sys/kernel/loadpin/enabled``. (Having
 a mutable filesystem means pinning is mutable too, but having the
 sysctl allows for easy testing on systems with a mutable filesystem.)

MAINTAINERS

···
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git lsm/loadpin
 S:	Supported
 F:	security/loadpin/
+F:	Documentation/admin-guide/LSM/LoadPin.rst
 
 YAMA SECURITY MODULE
 M:	Kees Cook <[e-mail]>