From: Stas Sergeev <stsp@aknet.ru>
To: Bryan Donlan <bdonlan@gmail.com>
Cc: Linux kernel <linux-kernel@vger.kernel.org>,
Oleg Nesterov <oleg@redhat.com>
Subject: Re: [path][rfc] add PR_DETACH prctl command
Date: Sat, 09 Apr 2011 01:38:35 +0400 [thread overview]
Message-ID: <4D9F805B.206@aknet.ru> (raw)
In-Reply-To: <BANLkTi=C46U0Qv7HDPNs3=wMPkWq0G9zCw@mail.gmail.com>
09.04.2011 01:25, Bryan Donlan wrote:
> Using dlopen will allow you to perform the fork() prior to running the
> library's initialization code.
But I don't even need that: I init it manually, there
is no automatic ctors there.
> As I said, I can't comment on the patch - I'm not familiar with that
> part of the kernel, so I don't know what kind of races may be lurking.
> But based on Oleg's comments, it seems clear to me that implementing
> your PR_DETACH is quite a complex thing to be doing.
Yes, that's true, but treat that as my personal tour to the
kernel internals. I wasn't realizing the complexity initially,
and now its almost done, so I wonder what the result will
look like, it will it worth all the troubles.
> It is true that
> being able to daemonize() without losing threads would be a nice thing
> to have; I just have my doubts that it's worth the potential bugs that
> such a change might introduce, when it's only needed in a somewhat
> rare case, and when perfectly good workarounds exist in userspace.
Yes, I share that concerns too. And it is very unlikely that
I will propose that patch for inclusion, but I think it is possible
to code that up small and simple, in which case maybe even
Oleg will not hate it all that much. ;))
prev parent reply other threads:[~2011-04-08 21:39 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-23 13:50 [path][rfc] add PR_DETACH prctl command Stas Sergeev
2011-02-23 19:14 ` Oleg Nesterov
2011-02-23 20:35 ` Stas Sergeev
2011-02-24 13:29 ` Oleg Nesterov
2011-02-24 15:13 ` Stas Sergeev
2011-02-24 15:32 ` Oleg Nesterov
2011-03-31 16:10 ` Stas Sergeev
2011-03-31 17:02 ` Oleg Nesterov
2011-03-31 17:47 ` Stas Sergeev
2011-03-31 18:18 ` Oleg Nesterov
2011-03-31 20:58 ` Stas Sergeev
2011-04-02 13:55 ` Oleg Nesterov
2011-04-02 18:20 ` Stas Sergeev
2011-04-02 22:00 ` Stas Sergeev
2011-04-01 17:02 ` Stas Sergeev
2011-04-02 14:06 ` Oleg Nesterov
2011-04-04 14:34 ` Stas Sergeev
2011-04-04 16:03 ` Oleg Nesterov
2011-04-04 20:05 ` Stas Sergeev
2011-04-05 15:15 ` Oleg Nesterov
2011-04-05 16:25 ` Stas Sergeev
2011-04-05 16:45 ` Oleg Nesterov
2011-04-05 17:51 ` Stas Sergeev
2011-04-08 10:51 ` Stas Sergeev
2011-04-08 18:55 ` Oleg Nesterov
2011-04-08 20:16 ` Stas Sergeev
2011-04-11 11:15 ` Stas Sergeev
2011-04-19 14:44 ` [path][rfc] add PR_DETACH prctl command [1/3] Stas Sergeev
2011-04-19 14:50 ` [path][rfc] add PR_DETACH prctl command [2/3] Stas Sergeev
2011-04-19 14:54 ` [path][rfc] add PR_DETACH prctl command [3/3] Stas Sergeev
2011-04-19 14:58 ` Alan Cox
2011-04-19 15:08 ` Stas Sergeev
2011-04-19 15:54 ` Alan Cox
2011-04-19 16:13 ` Oleg Nesterov
2011-04-19 16:29 ` Oleg Nesterov
2011-04-19 16:54 ` Stas Sergeev
2011-04-19 17:20 ` Oleg Nesterov
2011-04-19 17:41 ` Stas Sergeev
2011-04-19 18:17 ` Oleg Nesterov
2011-04-19 16:19 ` Stas Sergeev
2011-04-20 13:12 ` [path][rfc] add PR_DETACH prctl command [1/2] Stas Sergeev
2011-04-20 13:14 ` [path][rfc] add PR_DETACH prctl command [2/2] Stas Sergeev
2011-04-20 16:50 ` Oleg Nesterov
2011-04-20 18:45 ` Stas Sergeev
2011-04-20 19:33 ` Oleg Nesterov
2011-04-20 20:35 ` Stas Sergeev
2011-04-21 20:00 ` Oleg Nesterov
2011-04-21 20:11 ` Stas Sergeev
2011-04-21 10:02 ` Stas Sergeev
2011-04-21 20:15 ` Oleg Nesterov
2011-04-21 20:32 ` Stas Sergeev
2011-04-08 18:13 ` [path][rfc] add PR_DETACH prctl command Bryan Donlan
2011-04-08 20:26 ` Stas Sergeev
2011-04-08 20:52 ` Bryan Donlan
2011-04-08 21:14 ` Stas Sergeev
2011-04-08 21:25 ` Bryan Donlan
2011-04-08 21:38 ` Stas Sergeev [this message]
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