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document de_thread() with exit_notify() connection

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Add a couple of small comments, it is not easy to see what this code does.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@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 2008-04-30 00:53:12 -07:00 • committed by Linus Torvalds
parent 376e1d2531
commit 2800d8d19e
2 changed files with 2 additions and 1 deletions
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1
kernel/exit.c
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@ -877,6 +877,7 @@ static void exit_notify(struct task_struct *tsk, int group_dead)
state = EXIT_DEAD;
tsk->exit_state = state;
/* mt-exec, de_thread() is waiting for us */
if (thread_group_leader(tsk) &&
tsk->signal->notify_count < 0 &&
tsk->signal->group_exit_task)