From: Oleg Nesterov <oleg@redhat.com>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: viro@zeniv.linux.org.uk, linux-kernel@vger.kernel.org,
David Rientjes <rientjes@google.com>,
Sergey Dyasly <dserrg@gmail.com>, Michal Hocko <mhocko@suse.cz>
Subject: Re: [PATCH] kthread: Make kthread_create() killable.
Date: Sun, 15 Sep 2013 18:55:31 +0200 [thread overview]
Message-ID: <20130915165531.GD13344@redhat.com> (raw)
In-Reply-To: <201309152038.DDJ59271.OJMOHLFtSFOQVF@I-love.SAKURA.ne.jp>
Hi Tetsuo,
please do not start the off-list discussions ;)
On 09/15, Tetsuo Handa wrote:
>
> I examined do_coredump() case and found similar result.
...
> Do we want to change from call_usermodehelper_exec(UMH_WAIT_EXEC) to
> call_usermodehelper_exec(UMH_WAIT_EXEC | UMH_WAIT_KILLABLE)
To me, this makes sense in any case. And this matches other recent
"make coredump killable" changes.
> thread (who is waiting for pipe reader process to start) can terminate as soon
> as possible (rather than waiting forever unless somebody releases memory)?
But as for OOM this can't help if the dumping process is multithreaded.
This connects to other problems we discuss in another thread. probably
I should send the patch which does s/PT_TRACE_EXIT/SIGNAL_GROUP_COREDUMP/
at least.
Oleg.
next prev parent reply other threads:[~2013-09-15 17:01 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <201309132318.HEC05218.OtVOFOFMLJHFQS@I-love.SAKURA.ne.jp>
2013-09-14 16:05 ` [PATCH] kthread: Make kthread_create() killable Oleg Nesterov
2013-09-14 23:46 ` Tetsuo Handa
2013-09-15 16:39 ` Oleg Nesterov
2013-09-16 0:53 ` [PATCH v2] " Tetsuo Handa
2013-09-23 23:07 ` Andrew Morton
2013-09-24 15:17 ` [PATCH v3] " Tetsuo Handa
2013-09-24 16:38 ` Oleg Nesterov
2013-09-25 21:05 ` David Rientjes
2013-09-26 2:59 ` Tetsuo Handa
2013-09-26 18:53 ` David Rientjes
2013-09-28 7:18 ` Tetsuo Handa
2013-09-30 21:57 ` David Rientjes
2013-10-01 13:20 ` Tetsuo Handa
2013-10-02 7:06 ` David Rientjes
2013-10-02 13:44 ` Tetsuo Handa
[not found] ` <201309152038.DDJ59271.OJMOHLFtSFOQVF@I-love.SAKURA.ne.jp>
2013-09-15 16:55 ` Oleg Nesterov [this message]
2013-09-16 7:25 ` [PATCH] coredump: Make startup of coredump to pipe killable Tetsuo Handa
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