[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20070424150558.GA233@tv-sign.ru>
Date: Tue, 24 Apr 2007 19:05:58 +0400
From: Oleg Nesterov <oleg@...sign.ru>
To: "Eric W. Biederman" <ebiederm@...ssion.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Davide Libenzi <davidel@...ilserver.org>,
Ingo Molnar <mingo@...e.hu>,
Linus Torvalds <torvalds@...ux-foundation.org>,
"Rafael J. Wysocki" <rjw@...k.pl>,
Roland McGrath <roland@...hat.com>,
Rusty Russell <rusty@...tcorp.com.au>,
linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH] kthread: Enhance kthread_stop to abort interruptible sleeps
On 04/24, Eric W. Biederman wrote:
>
> The NULL vfork_done is really weird as exec is the only thing that sets
> vfork_done to NULL.
Hm, mm_release() clears ->vfork_done before complete().
mm_release:
struct completion *vfork_done = tsk->vfork_done;
if (vfork_done) {
tsk->vfork_done = NULL;
complete(vfork_done);
}
kthread_stop:
set_tsk_thread_flag(tsk, TIF_KTHREAD_STOP);
signal_wake_up(tsk, 1);
// tsk exits, sets ->vfork_done == NULL
wait_for_completion(tsk->vfork_done);
Probably Rafael worried about this, but I misunderstood him...
Oleg.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists