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exit: exit_notify: re-use "dead" list to autoreap current

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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>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Sterling Alexander <stalexan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2014-12-10 15:55:23 -08:00 committed by Linus Torvalds
parent 482a3767e5
commit 6c66e7dba3
1 changed files with 2 additions and 4 deletions
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6
kernel/exit.c
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@ -632,6 +632,8 @@ static void exit_notify(struct task_struct *tsk, int group_dead)
} }
tsk->exit_state = autoreap ? EXIT_DEAD : EXIT_ZOMBIE; 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 */ /* mt-exec, de_thread() is waiting for group leader */
if (unlikely(tsk->signal->notify_count < 0)) 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); list_del_init(&p->ptrace_entry);
release_task(p); 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 #ifdef CONFIG_DEBUG_STACK_USAGE