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Subject[PATCH -mm 3/3] exit: exit_notify: re-use "dead" list to autoreap current
After the previous change we can add just the exiting EXIT_DEAD task
to the "dead" list and remove another release_task(tsk).

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
---
kernel/exit.c | 6 ++----
1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/exit.c b/kernel/exit.c
index ccf27cb..43394f7 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -632,6 +632,8 @@ static void exit_notify(struct task_struct *tsk, int group_dead)
}

tsk->exit_state = autoreap ? EXIT_DEAD : EXIT_ZOMBIE;
+ if (tsk->exit_state == EXIT_DEAD)
+ list_add(&tsk->ptrace_entry, &dead);

/* mt-exec, de_thread() is waiting for group leader */
if (unlikely(tsk->signal->notify_count < 0))
@@ -642,10 +644,6 @@ static void exit_notify(struct task_struct *tsk, int group_dead)
list_del_init(&p->ptrace_entry);
release_task(p);
}
-
- /* If the process is dead, release it - nobody will wait for it */
- if (autoreap)
- release_task(tsk);
}

#ifdef CONFIG_DEBUG_STACK_USAGE
--
1.5.5.1


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