Messages in this thread Patch in this message | | | Date | Wed, 22 Jun 2011 23:10:11 +0200 | From | Oleg Nesterov <> | Subject | [PATCH 7/8] do not change dead_task->exit_signal |
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__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> ---
kernel/ptrace.c | 1 - kernel/signal.c | 1 - 2 files changed, 2 deletions(-)
--- ptrace/kernel/ptrace.c~7_dont_change_exit_signal 2011-06-22 22:47:11.000000000 +0200 +++ ptrace/kernel/ptrace.c 2011-06-22 22:47:14.000000000 +0200 @@ -384,7 +384,6 @@ static bool __ptrace_detach(struct task_ 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; } } --- ptrace/kernel/signal.c~7_dont_change_exit_signal 2011-06-22 22:47:11.000000000 +0200 +++ ptrace/kernel/signal.c 2011-06-22 22:47:14.000000000 +0200 @@ -1650,7 +1650,6 @@ bool do_notify_parent(struct task_struct * it, just use SIG_IGN instead). */ autoreap = true; - tsk->exit_signal = -1; if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN) sig = 0; }
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