pid: remove the child_reaper special case in init/main.c

This patchset is a cleanup and a preparation to unshare the pid namespace.
These prerequisites prepare for Eric's patchset to give a file descriptor
to a namespace and join an existing namespace.

This patch:

It turns out that the existing assignment in copy_process of the
child_reaper can handle the initial assignment of child_reaper we just
need to generalize the test in kernel/fork.c

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@free.fr>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Serge E. Hallyn <serge@hallyn.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 9 deletions

diff --git a/init/main.c b/init/main.c
index 3627bb37225..4a9479ef454 100644
--- a/init/main.c
+++ b/init/main.c
@@ -787,15 +787,6 @@ static int __init kernel_init(void * unused)
          * init can run on any cpu.
          */
         set_cpus_allowed_ptr(current, cpu_all_mask);
-        /*
-         * Tell the world that we're going to be the grim
-         * reaper of innocent orphaned children.
-         *
-         * We don't want people to have to make incorrect
-         * assumptions about where in the task array this
-         * can be found.
-         */
-        init_pid_ns.child_reaper = current;
 
         cad_pid = task_pid(current);