From: Pavel Machek <pavel@ucw.cz>
To: Nigel Cunningham <ncunningham@crca.org.au>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
Alan Stern <stern@rowland.harvard.edu>,
linux-kernel <linux-kernel@vger.kernel.org>,
Jens Axboe <jens.axboe@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-pm <linux-pm@lists.linux-foundation.org>,
Matt Reimer <mattjreimer@gmail.com>
Subject: Re: [linux-pm] Is it supposed to be ok to call del_gendisk while userspace is frozen?
Date: Mon, 24 May 2010 21:02:07 +0200 [thread overview]
Message-ID: <20100524190206.GL1292@ucw.cz> (raw)
In-Reply-To: <4BF1C86B.8000203@crca.org.au>
> >>- We're dealing with the symptom, not the cause. Almost always a bad idea.
> >
> >I very much prefer to have a fix for a symptom than no fix at all, which is the
> >realistic alternative in this case.
> >
> >So, I think we should merge the patch and if someone finds the root cause
> >at one point in future, then we can just use the *right* approach instead of
> >the present one.
> >
> >The problem is real and people in the field are affected by it, so if you don't
> >have a working alternative patch, please just let go.
>
> I'm not denying that the problem is real. What I am concerned about
> is finding a real solution, not just putting a sticky plaster over
> the wound. It seems to me to be much wiser to deal with the issue
> properly now instead of doing extra work later to diagnose what
> might be a harder to reproduce symptom of the same problem. I'd
> happily put the time in now myself, but I simply don't have the time
> this week.
>
> Would it be possible to apply the patch, adding some sort of new tag
> that can be used to say "This needs further attention", perhaps
> including an enduring reference to this conversation. Later, the
> 'real' fix could include another special tag that says "Proper fix
> for the symptom addressed in commit 5e94f810"?
WARN_ON() whenever patch triggers?
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2010-05-24 19:02 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-13 13:29 Is it supposed to be ok to call del_gendisk while userspace is frozen? Maxim Levitsky
2010-02-15 16:00 ` Maxim Levitsky
2010-02-15 21:04 ` Rafael J. Wysocki
2010-02-16 16:27 ` [linux-pm] " Alan Stern
2010-02-20 22:22 ` Maxim Levitsky
2010-02-23 12:33 ` Jens Axboe
2010-02-23 15:29 ` Alan Stern
2010-02-23 15:58 ` Jens Axboe
2010-02-23 16:33 ` Alan Stern
2010-02-23 22:16 ` Jens Axboe
2010-02-24 15:59 ` Alan Stern
2010-02-24 19:12 ` Jens Axboe
2010-02-24 20:19 ` Alan Stern
2010-02-23 16:42 ` Testing for dirty buffers on a block device Alan Stern
2010-02-23 22:13 ` Jens Axboe
2010-02-24 15:51 ` Alan Stern
2010-02-24 19:09 ` Jens Axboe
2010-02-24 20:09 ` Alan Stern
2010-02-25 8:20 ` Jens Axboe
2010-02-25 22:19 ` Dave Chinner
2010-03-01 6:35 ` [linux-pm] Is it supposed to be ok to call del_gendisk while userspace is frozen? Pavel Machek
2010-03-01 15:23 ` Alan Stern
2010-03-03 21:50 ` Pavel Machek
2010-03-03 22:23 ` Alan Stern
2010-03-04 0:23 ` Rafael J. Wysocki
2010-03-04 2:48 ` Alan Stern
2010-03-04 19:26 ` Rafael J. Wysocki
2010-03-04 19:36 ` Alan Stern
2010-03-04 20:04 ` Rafael J. Wysocki
2010-03-04 20:15 ` Pavel Machek
2010-04-22 23:40 ` Matt Reimer
2010-04-23 5:17 ` Rafael J. Wysocki
2010-05-11 23:55 ` Matt Reimer
2010-05-12 14:50 ` Alan Stern
2010-05-13 21:44 ` Matt Reimer
2010-05-13 21:54 ` Alan Stern
2010-05-13 22:20 ` Matt Reimer
2010-05-13 22:47 ` Nigel Cunningham
2010-05-15 2:37 ` Alan Stern
2010-05-15 2:53 ` Nigel Cunningham
2010-05-16 19:35 ` Rafael J. Wysocki
2010-05-15 2:32 ` Alan Stern
2010-05-15 20:30 ` Rafael J. Wysocki
2010-05-16 7:49 ` Nigel Cunningham
2010-05-16 19:38 ` Rafael J. Wysocki
2010-05-16 21:32 ` Nigel Cunningham
2010-05-17 2:22 ` Alan Stern
2010-05-17 7:45 ` Nigel Cunningham
2010-05-17 20:35 ` Rafael J. Wysocki
2010-05-17 22:51 ` Nigel Cunningham
2010-05-18 19:43 ` Rafael J. Wysocki
2010-05-18 20:06 ` Alan Stern
2010-05-24 19:02 ` Pavel Machek [this message]
2010-05-24 21:21 ` Nigel Cunningham
2010-03-04 13:53 ` Pavel Machek
2010-06-04 11:20 ` Maxim Levitsky
2010-06-04 14:59 ` Alan Stern
2010-06-04 15:19 ` Maxim Levitsky
2010-06-04 17:52 ` Alan Stern
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