do not change dead_task->exit_signal

__ptrace_detach() and do_notify_parent() set task->exit_signal = -1
to mark the task dead. This is no longer needed, nobody checks
exit_signal to detect the EXIT_DEAD task.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Tejun Heo <tj@kernel.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 66a28bd71ef6..d7ccc79454f5 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -384,7 +384,6 @@ static bool __ptrace_detach(struct task_struct *tracer, struct task_struct *p)
                         dead = do_notify_parent(p, p->exit_signal);
                 else if (ignoring_children(tracer->sighand)) {
                         __wake_up_parent(p, tracer);
-                        p->exit_signal = -1;
                         dead = true;
                 }
         }