From: Josh Triplett <josh@joshtriplett.org>
To: Thiago Macieira <thiago.macieira@intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@amacapital.net>,
Ingo Molnar <mingo@redhat.com>, Kees Cook <keescook@chromium.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
"H. Peter Anvin" <hpa@zytor.com>, Rik van Riel <riel@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Michael Kerrisk <mtk.manpages@gmail.com>,
linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
linux-fsdevel@vger.kernel.org, x86@kernel.org
Subject: Re: [PATCH 6/6] clone4: Introduce new CLONE_FD flag to get task exit notification via fd
Date: Sat, 14 Mar 2015 12:01:32 -0700 [thread overview]
Message-ID: <20150314190132.GB22130@thin> (raw)
In-Reply-To: <28025621.k7WkrfHd4d@tjmaciei-mobl4>
On Sat, Mar 14, 2015 at 11:38:29AM -0700, Thiago Macieira wrote:
> On Saturday 14 March 2015 15:32:35 Oleg Nesterov wrote:
> > It is not clear to me what do_wait() should do with ->autoreap child, even
> > ignoring ptrace.
> >
> > Just suppose that real_parent has a single "autoreap" child. Should
> > wait(NULL) hanf then?
>
> It should ignore the child that is set to autoreap. wait(NULL) should return -
> ECHILD, indicating there are no children waiting to be reaped.
Right. And I don't think the current code does this. I think we need
to change wait_consider_task to early-return for ->autoreap just as it
does for task_state == EXIT_DEAD. I'll do that in v2.
- Josh Triplett
next prev parent reply other threads:[~2015-03-14 19:01 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-13 1:40 [PATCH 0/6] CLONE_FD: Task exit notification via file descriptor Josh Triplett
2015-03-13 1:40 ` [PATCH 1/6] clone: Support passing tls argument via C rather than pt_regs magic Josh Triplett
[not found] ` <cover.1426180120.git.josh-iaAMLnmF4UmaiuxdJuQwMA@public.gmane.org>
2015-03-13 1:40 ` [PATCH 2/6] x86: Opt into HAVE_COPY_THREAD_TLS, for both 32-bit and 64-bit Josh Triplett
[not found] ` <cf79b9f0c40314e6bfda7c634e378015bd7ba037.1426180120.git.josh-iaAMLnmF4UmaiuxdJuQwMA@public.gmane.org>
2015-03-13 22:01 ` Andy Lutomirski
2015-03-13 22:31 ` josh
2015-03-13 22:38 ` Andy Lutomirski
[not found] ` <CALCETrWspvNcEYxwbo1+ifXSj7Qj7YdcRgmNvZ1RaBrUAK12Zw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-13 22:43 ` josh-iaAMLnmF4UmaiuxdJuQwMA
2015-03-13 22:45 ` Andy Lutomirski
[not found] ` <CALCETrW3kJSVz4ffVC6YdB+ELukhOHNgPFKZSziMq5nn_Nq3Zg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-13 23:01 ` josh-iaAMLnmF4UmaiuxdJuQwMA
2015-03-13 1:40 ` [PATCH 5/6] fs: Make alloc_fd non-private Josh Triplett
2015-03-13 2:07 ` [PATCH 0/6] CLONE_FD: Task exit notification via file descriptor Thiago Macieira
2015-03-13 16:05 ` David Drysdale
2015-03-13 19:42 ` Josh Triplett
2015-03-13 21:16 ` Thiago Macieira
2015-03-13 21:44 ` josh
2015-03-13 21:33 ` Andy Lutomirski
[not found] ` <CALCETrXH+Ui1XqVZjFB=8vDpJLCYeVf+XNUPGWNfwDsNKi_nKg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-13 21:45 ` josh-iaAMLnmF4UmaiuxdJuQwMA
2015-03-13 21:51 ` Andy Lutomirski
[not found] ` <CALCETrWwkdWkNCsrcSAn+7f9SJCuYA-TV9=AygWMhXCC9Njp9Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-14 1:11 ` Thiago Macieira
2015-03-14 19:03 ` Thiago Macieira
2015-03-14 19:29 ` Josh Triplett
2015-03-15 10:18 ` David Drysdale
2015-03-15 10:59 ` Josh Triplett
2015-03-15 8:55 ` David Drysdale
2015-03-13 1:40 ` [PATCH 3/6] Introduce a new clone4 syscall with more flag bits and extensible arguments Josh Triplett
2015-03-13 1:40 ` [PATCH 4/6] signal: Factor out a helper function to process task_struct exit_code Josh Triplett
2015-03-13 1:41 ` [PATCH 6/6] clone4: Introduce new CLONE_FD flag to get task exit notification via fd Josh Triplett
2015-03-13 16:21 ` Oleg Nesterov
2015-03-13 19:57 ` josh
2015-03-13 21:34 ` Andy Lutomirski
2015-03-13 22:20 ` josh
2015-03-13 22:28 ` Andy Lutomirski
[not found] ` <CALCETrVRqgsbpi9pPRwy42cuXiDzyPgWRJmfSRSQM7eGFfsZYA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-13 22:34 ` josh-iaAMLnmF4UmaiuxdJuQwMA
2015-03-13 22:38 ` Andy Lutomirski
2015-03-14 14:14 ` Oleg Nesterov
[not found] ` <20150314141414.GA11062-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-14 14:32 ` Oleg Nesterov
2015-03-14 18:38 ` Thiago Macieira
2015-03-14 18:54 ` Oleg Nesterov
[not found] ` <20150314185424.GA6813-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-14 22:03 ` Josh Triplett
2015-03-14 22:26 ` Thiago Macieira
2015-03-14 19:01 ` Josh Triplett [this message]
2015-03-14 19:18 ` Oleg Nesterov
[not found] ` <20150314191836.GA8416-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-14 19:47 ` Oleg Nesterov
[not found] ` <20150314194721.GA9654-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-14 20:14 ` Josh Triplett
2015-03-14 20:30 ` Oleg Nesterov
[not found] ` <20150314203029.GA11656-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-14 22:14 ` Josh Triplett
2015-03-14 20:03 ` Josh Triplett
2015-03-14 20:20 ` Oleg Nesterov
2015-03-14 22:09 ` Josh Triplett
[not found] ` <9c39c576e1d9a9912b4aec54d833a73a84d2f592.1426180120.git.josh-iaAMLnmF4UmaiuxdJuQwMA@public.gmane.org>
2015-03-14 14:35 ` Oleg Nesterov
[not found] ` <20150314143558.GB12086-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-14 19:15 ` Josh Triplett
2015-03-14 19:24 ` Oleg Nesterov
[not found] ` <20150314192456.GA8707-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-14 19:48 ` Josh Triplett
2015-03-13 1:41 ` [PATCH] clone4.2: New manpage documenting clone4(2) Josh Triplett
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