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/signal.c b/kernel/signal.c
index d52e82cd62bb..4c4ad34caf77 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1650,7 +1650,6 @@ bool do_notify_parent(struct task_struct *tsk, int sig)
                  * it, just use SIG_IGN instead).
                  */
                 autoreap = true;
-                tsk->exit_signal = -1;
                 if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN)
                         sig = 0;
         }