[PATCH 0/7][RFC] pid: changes to support audit

[Richard Guy Briggs <rgb@redhat.com>]

These are a number of patches inspired by ebiederman's container work that were
included by me 2013-08-20 as the patchset:
	RFC: steps to make audit pid namespace-safe

They have been seperated out for the pid maintainer since there are no direct
dependencies from the audit pid namespace patchset with the exception of:
	pid: get pid_t ppid of task in init_pid_ns

Andrew, are you willing to adopt these?

In particular, there is discussion around read-only task_struct::pid here:
	https://lkml.org/lkml/2013/12/16/552

Richard Guy Briggs (7):
  pid: change task_struct::pid to read-only
  compiler: CONST_CAST makes writing const vars easier and obvious
  pid: use the CONST_CAST macro instead to write to const
    task_struct::pid
  pid: modify task_tgid_nr to work without task->tgid.
  pid: rewrite task helper function is_global_init() avoiding task->pid
  pid: mark struct task const in helper functions
  pid: get pid_t ppid of task in init_pid_ns

 arch/x86/kernel/process.c |    2 +-
 fs/exec.c                 |    2 +-
 include/linux/compiler.h  |    8 ++++++
 include/linux/sched.h     |   60 +++++++++++++++++++++++++++++---------------
 kernel/fork.c             |    5 ++-
 kernel/pid.c              |    4 +-
 6 files changed, 54 insertions(+), 27 deletions(-)