提交 d4f7c511 编写于 作者: O Oleg Nesterov

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: NOleg Nesterov <oleg@redhat.com>
Reviewed-by: NTejun Heo <tj@kernel.org>
上级 e550f14d
...@@ -384,7 +384,6 @@ static bool __ptrace_detach(struct task_struct *tracer, struct task_struct *p) ...@@ -384,7 +384,6 @@ static bool __ptrace_detach(struct task_struct *tracer, struct task_struct *p)
dead = do_notify_parent(p, p->exit_signal); dead = do_notify_parent(p, p->exit_signal);
else if (ignoring_children(tracer->sighand)) { else if (ignoring_children(tracer->sighand)) {
__wake_up_parent(p, tracer); __wake_up_parent(p, tracer);
p->exit_signal = -1;
dead = true; dead = true;
} }
} }
......
...@@ -1650,7 +1650,6 @@ bool do_notify_parent(struct task_struct *tsk, int sig) ...@@ -1650,7 +1650,6 @@ bool do_notify_parent(struct task_struct *tsk, int sig)
* it, just use SIG_IGN instead). * it, just use SIG_IGN instead).
*/ */
autoreap = true; autoreap = true;
tsk->exit_signal = -1;
if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN) if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN)
sig = 0; sig = 0;
} }
......
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