From: Oleg Nesterov <oleg@redhat.com>
To: Rusty Russell <rusty@rustcorp.com.au>, tj@kernel.org
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
akpm@linux-foundation.org, bharrosh@panasas.com,
torvalds@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: UMH_WAIT_EXEC->UMH_WAIT_PROC deadlock
Date: Mon, 21 May 2012 20:12:44 +0200 [thread overview]
Message-ID: <20120521181244.GA3668@redhat.com> (raw)
In-Reply-To: <20120521173453.GB31803@redhat.com>
forgot to mention...
On 05/21, Oleg Nesterov wrote:
>
> Another issue is that Tejun dislikes the usage of system_unbound_wq.
> I guess, because WQ_UNBOUND implies WQ_HIGHPRI. Btw, I do not really
> understand why. And, otoh, I don't think that __call_usermodehelper()
> should be bound to any CPU, this would look a bit strange to me.
and please note that currently khelper_wq is WQ_UNBOUND anyway.
Oleg.
next prev parent reply other threads:[~2012-05-21 18:14 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-20 23:18 [PATCHSET 0/4] kmod: Optional timeout on the wait in call_usermodehelper_exec Boaz Harrosh
2012-03-20 23:23 ` [PATCH 1/4] kmod: Un-export call_usermodehelper_freeinfo() Boaz Harrosh
2012-03-20 23:26 ` [PATCH 2/4] kmod: Convert two call sites to call_usermodehelper_fns() Boaz Harrosh
2012-03-22 3:00 ` James Morris
2012-03-20 23:28 ` [PATCH 3/4] kmod: Move call_usermodehelper_fns() to .c file and unexport it's helpers Boaz Harrosh
2012-03-20 23:32 ` [RFC 4/4] {RFC} kmod.c: Add new call_usermodehelper_timeout() API Boaz Harrosh
2012-03-22 2:44 ` Boaz Harrosh
2012-03-22 2:48 ` Boaz Harrosh
2012-03-22 2:52 ` Boaz Harrosh
[not found] ` <201203241028.IGJ09825.MtOVFHFJQSLOFO@I-love.SAKURA.ne.jp>
[not found] ` <4F6D35F0.2020808@panasas.com>
[not found] ` <20120323200028.fadf49f8.akpm@linux-foundation.org>
[not found] ` <20120324145308.GA10023@redhat.com>
[not found] ` <201205191121.BIF57837.FHFOtMOLJQSOFV@I-love.SAKURA.ne.jp>
[not found] ` <4FB7170F.7070807@panasas.com>
2012-05-21 17:01 ` call_usermodehelper && check_hung_uninterruptible_tasks Oleg Nesterov
2012-05-21 18:24 ` Oleg Nesterov
[not found] ` <87fwau4aag.fsf@rustcorp.com.au>
2012-05-21 17:34 ` UMH_WAIT_EXEC->UMH_WAIT_PROC deadlock Oleg Nesterov
2012-05-21 18:12 ` Oleg Nesterov [this message]
2012-03-22 11:48 ` [RFC 4/4] {RFC} kmod.c: Add new call_usermodehelper_timeout()API Tetsuo Handa
2012-03-22 14:27 ` [RFC 4/4] {RFC} kmod.c: Add new call_usermodehelper_timeout() API Oleg Nesterov
2012-03-22 14:42 ` Oleg Nesterov
2012-03-22 19:08 ` Boaz Harrosh
2012-03-22 22:16 ` [RFC 4/4] {RFC} kmod.c: Add new call_usermodehelper_timeout()API Tetsuo Handa
2012-03-23 4:48 ` Boaz Harrosh
2012-03-23 5:23 ` Tetsuo Handa
2012-03-23 16:30 ` Oleg Nesterov
2012-03-23 13:34 ` [RFC 4/4] {RFC} kmod.c: Add new call_usermodehelper_timeout() API Oleg Nesterov
2012-03-21 15:35 ` [PATCHSET 0/4] kmod: Optional timeout on the wait in call_usermodehelper_exec Greg KH
2012-03-22 0:18 ` Boaz Harrosh
2012-03-22 0:31 ` Myklebust, Trond
2012-03-22 1:18 ` Boaz Harrosh
2012-03-27 1:57 ` [PATCHSET 0/6 version 2] " Boaz Harrosh
2012-03-27 2:00 ` [PATCH 1/6] kmod: Unexport call_usermodehelper_freeinfo() Boaz Harrosh
2012-03-27 2:02 ` [PATCH 2/6] kmod: Convert two call sites to call_usermodehelper_fns() Boaz Harrosh
2012-03-27 2:04 ` [PATCH 3/6] kmod: Move call_usermodehelper_fns() to .c file and unexport all it's helpers Boaz Harrosh
2012-03-27 2:06 ` [PATCH 4/6 OPTION-A] completion: Add new wait_for_completion_timeout_state Boaz Harrosh
2012-03-27 2:33 ` [PATCH 4/6 OPTION-A version 3] " Boaz Harrosh
2012-03-27 8:11 ` Peter Zijlstra
2012-03-28 18:19 ` Boaz Harrosh
2012-03-28 18:25 ` Peter Zijlstra
2012-03-28 17:38 ` Oleg Nesterov
2012-03-27 2:09 ` [PATCH 4/6 option-B] kmod: add new wait_for_completion_timeout_state() helper Boaz Harrosh
2012-03-27 2:13 ` [PATCH 5/6] kmod: Add new call_usermodehelper_timeout() API Boaz Harrosh
2012-03-27 15:43 ` Oleg Nesterov
2012-03-28 17:04 ` Oleg Nesterov
2012-03-27 2:15 ` [PATCH 6/6] kmod: optional: Convert the use of xchg to a kref Boaz Harrosh
2012-03-28 16:35 ` Oleg Nesterov
2012-03-27 21:07 ` [PATCHSET 0/6 version 2] kmod: Optional timeout on the wait in call_usermodehelper_exec Andrew Morton
2012-03-28 20:19 ` Oleg Nesterov
2012-03-28 21:42 ` Boaz Harrosh
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