docs: proc: add documentation for "hidepid=4" and "subset=pid" options and new mount behavior

Signed-off-by: Alexey Gladkov <gladkov.alexey@gmail.com>
Reviewed-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Alexey Gladkov 2020-04-19 16:10:55 +02:00 • committed by Eric W. Biederman
commit 37e7647a72