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Commit d4f7c511 authored by Oleg Nesterov's avatar Oleg Nesterov
Browse files

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: default avatarOleg Nesterov <oleg@redhat.com>
Reviewed-by: default avatarTejun Heo <tj@kernel.org>
parent e550f14d

kernel/ptrace.c

+0 −1
Original line number Diff line number Diff line
@@ -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;

		}

	}

kernel/signal.c

+0 −1
Original line number Diff line number Diff line
@@ -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;

	}