From: Daniel Phillips <phillips@phunq.net>
To: Alasdair G Kergon <agk@redhat.com>
Cc: Matt Mackall <mpm@selenic.com>,
Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>,
Andi Kleen <andi@firstfloor.org>,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
gorcunov@gmail.com
Subject: Re: [JANITOR PROPOSAL] Switch ioctl functions to ->unlocked_ioctl
Date: Thu, 10 Jan 2008 14:55:32 -0800 [thread overview]
Message-ID: <200801101455.32927.phillips@phunq.net> (raw)
In-Reply-To: <20080110113954.GL3510@agk.fab.redhat.com>
On Thursday 10 January 2008 03:39, Alasdair G Kergon wrote:
> On Thu, Jan 10, 2008 at 01:49:15AM -0800, Daniel Phillips wrote:
> > So what stops you from changing to unlocked_ioctl for the main
> > device mapper ctl_ioctl?
>
> Nothing - patches to do this are queued for 2.6.25:
Nice. This removes a deadlock we hit, where if creating a device mapper
target blocks indefinitely (say on network IO) then nobody else can
complete a device mapper operation because BKL is held. If completing
the device create depends on some other device mapper operation, then
it is game over.
Our current workaround is to test for and drop BKL, ugh. Thanks for the
cleanup.
Regards,
Daniel
next prev parent reply other threads:[~2008-01-10 22:56 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-08 16:40 [JANITOR PROPOSAL] Switch ioctl functions to ->unlocked_ioctl Andi Kleen
2008-01-08 17:05 ` Cyrill Gorcunov
2008-01-08 18:52 ` Alexey Dobriyan
2008-01-08 19:18 ` Andi Kleen
2008-01-09 0:40 ` Arnd Bergmann
2008-01-09 0:47 ` Andi Kleen
2008-01-09 1:19 ` Arnd Bergmann
2008-01-09 1:31 ` Kevin Winchester
2008-01-09 1:41 ` Andi Kleen
2008-01-09 8:02 ` Christoph Hellwig
2008-01-09 10:00 ` Junio C Hamano
[not found] ` <200801091255.02172.arnd@arndb.de>
2008-01-09 14:06 ` Andi Kleen
2008-01-08 19:58 ` Paolo Ciarrocchi
2008-01-08 20:00 ` Matthew Wilcox
2008-01-08 20:03 ` Paolo Ciarrocchi
2008-01-08 20:16 ` Matthew Wilcox
2008-01-08 20:21 ` Matthew Wilcox
2008-01-08 20:26 ` Paolo Ciarrocchi
2008-01-08 23:55 ` Dmitri Vorobiev
2008-03-06 14:54 ` supervising, text processing, semantic "patching" (Re: [JANITOR PROPOSAL] Switch ioctl functions to ->unlocked_ioctl) Oleg Verych
2008-01-08 20:22 ` [JANITOR PROPOSAL] Switch ioctl functions to ->unlocked_ioctl Rik van Riel
2008-01-08 20:42 ` Andi Kleen
2008-01-08 20:45 ` Paolo Ciarrocchi
2008-01-08 23:06 ` [JANITOR PROPOSAL] Switch ioctl functions to ->unlocked_ioctl II Andi Kleen
2008-01-08 23:43 ` Paolo Ciarrocchi
2008-01-09 0:03 ` Andi Kleen
2008-01-09 20:12 ` [JANITOR PROPOSAL] Switch ioctl functions to ->unlocked_ioctl Matt Mackall
2008-01-09 22:40 ` Alasdair G Kergon
2008-01-09 22:46 ` Andi Kleen
2008-01-09 22:45 ` Alasdair G Kergon
2008-01-09 22:58 ` Chris Friesen
2008-01-09 23:05 ` Alasdair G Kergon
2008-01-09 23:31 ` Vadim Lobanov
2008-01-10 0:00 ` Alasdair G Kergon
2008-01-10 4:59 ` Vadim Lobanov
2008-01-10 8:34 ` Christoph Hellwig
2008-01-10 9:49 ` Daniel Phillips
2008-01-10 11:39 ` Alasdair G Kergon
2008-01-10 22:55 ` Daniel Phillips [this message]
2008-01-11 8:33 ` Pavel Machek
2008-01-08 23:50 ` Kevin Winchester
2008-01-09 0:09 ` Andi Kleen
2008-01-09 0:17 ` Kevin Winchester
2008-01-09 0:27 ` Andi Kleen
2008-01-09 10:34 ` Andre Noll
2008-01-09 13:17 ` Richard Knutsson
2008-01-09 13:33 ` Andre Noll
2008-01-10 8:52 ` Rolf Eike Beer
2008-01-10 9:25 ` Andi Kleen
2008-01-10 10:02 ` Rolf Eike Beer
2008-01-10 10:06 ` Andi Kleen
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