From: Gu Zheng <guz.fnst@cn.fujitsu.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Tejun Heo <tj@kernel.org>, Toshi Kani <toshi.kani@hp.com>,
LKML <linux-kernel@vger.kernel.org>,
Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Subject: Re: [PATCH 0/2] driver core / ACPI: Avoid device removal locking problems
Date: Thu, 29 Aug 2013 10:00:39 +0800 [thread overview]
Message-ID: <521EAB47.4060101@cn.fujitsu.com> (raw)
In-Reply-To: <26495758.n1zOCiG3iV@vostro.rjw.lan>
Hi Rafael,
On 08/28/2013 09:45 PM, Rafael J. Wysocki wrote:
> Hi All,
>
> The following two patches are to address possible deadlocks related to
> device removal and device sysfs attribute access. In short, some device
> sysfs attribute callbacks need to acquire locks that are also held around
> device removal and that may lead to deadlocks with s_active draining in
> sysfs_deactivate().
>
> [1/2] Avoid possible device removal deadlocks related to device_hotplug_lock.
> [2/2] Rework the handling of containers by ACPI hotplug (which makes a possible
> device removal deadlock related to acpi_scan_lock go away).
>
This version is concise and friendly. It works well on latest kernel tree, and all
the splat goes away.:)
Best regards,
Gu
> On top of linux-next, for v3.12.
>
> Thanks,
> Rafael
>
>
next prev parent reply other threads:[~2013-08-29 2:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-25 20:09 [PATCH] driver core / ACPI: Avoid device removal locking problems Rafael J. Wysocki
2013-08-25 21:54 ` Greg Kroah-Hartman
2013-08-26 3:13 ` Gu Zheng
2013-08-26 12:42 ` Rafael J. Wysocki
2013-08-26 14:43 ` Rafael J. Wysocki
2013-08-26 15:02 ` Rafael J. Wysocki
2013-08-27 3:26 ` Gu Zheng
2013-08-27 9:21 ` Gu Zheng
2013-08-27 18:36 ` Tejun Heo
2013-08-27 21:45 ` Rafael J. Wysocki
2013-08-28 10:03 ` Gu Zheng
2013-08-28 12:24 ` Tejun Heo
2013-08-28 13:24 ` Rafael J. Wysocki
2013-08-28 13:45 ` [PATCH 0/2] " Rafael J. Wysocki
2013-08-28 13:48 ` [PATCH 1/2] driver core / ACPI: Avoid device hot remove locking issues Rafael J. Wysocki
2013-08-28 18:53 ` Greg Kroah-Hartman
2013-08-29 2:02 ` Gu Zheng
2013-08-28 13:51 ` [PATCH 2/2] ACPI / hotplug: Remove containers synchronously Rafael J. Wysocki
2013-08-28 18:53 ` Greg Kroah-Hartman
2013-08-29 2:02 ` Gu Zheng
2013-08-28 17:06 ` [PATCH 0/2] driver core / ACPI: Avoid device removal locking problems Toshi Kani
2013-08-29 2:00 ` Gu Zheng [this message]
2013-08-27 21:38 ` [PATCH] " Toshi Kani
2013-08-28 2:12 ` Gu Zheng
2013-08-28 16:55 ` Toshi Kani
2013-08-27 2:03 ` Gu Zheng
2013-08-27 2:38 ` Gu Zheng
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