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make do_notify_parent() return bool

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- change do_notify_parent() to return a boolean, true if the task should
  be reaped because its parent ignores SIGCHLD.

- update the only caller which checks the returned value, exit_notify().

This temporary uglifies exit_notify() even more, will be cleanuped by
the next change.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Oleg Nesterov
2011-06-22 23:08:18 +02:00
parent 06d984737b
commit 53c8f9f199
3 changed files with 17 additions and 13 deletions
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9
kernel/exit.c
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@ -820,6 +820,7 @@ static void forget_original_parent(struct task_struct *father)
static void exit_notify(struct task_struct *tsk, int group_dead)
{
int signal;
bool autoreap;
void *cookie;
/*
@ -858,9 +859,11 @@ static void exit_notify(struct task_struct *tsk, int group_dead)
signal = tracehook_notify_death(tsk, &cookie, group_dead);
if (signal >= 0)
signal = do_notify_parent(tsk, signal);
autoreap = do_notify_parent(tsk, signal);
else
autoreap = (signal == DEATH_REAP);
tsk->exit_state = signal == DEATH_REAP ? EXIT_DEAD : EXIT_ZOMBIE;
tsk->exit_state = autoreap ? EXIT_DEAD : EXIT_ZOMBIE;
/* mt-exec, de_thread() is waiting for group leader */
if (unlikely(tsk->signal->notify_count < 0))
@ -868,7 +871,7 @@ static void exit_notify(struct task_struct *tsk, int group_dead)
write_unlock_irq(&tasklist_lock);
/* If the process is dead, release it - nobody will wait for it */
if (signal == DEATH_REAP)
if (autoreap)
release_task(tsk);
}