From: Ralf Hildebrandt <Ralf.Hildebrandt@charite.de>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Federico Cuello <fedux@lugmen.org.ar>,
Artem Bityutskiy <Artem.Bityutskiy@nokia.com>,
linux-kernel@vger.kernel.org
Subject: Re: sync-Regression in 2.6.28.2?
Date: Mon, 9 Feb 2009 14:49:58 +0100 [thread overview]
Message-ID: <20090209134958.GP27548@charite.de> (raw)
In-Reply-To: <200902100045.44386.nickpiggin@yahoo.com.au>
> This patch seems good to me. If you would care to add a changelog and
> Signed-off-by: line, then we could get it merged?
>
> I am not too sure about this bug. I have reproduced a strange hang with
> ext4 (which does include sys_sync and write_cache_pages traces), and
> also turned up a lockdep report. Also, we haven't seen any reports of
> this problem on other filesystems. So it could be an ext4 bug.
>
> Your traces also have lots of tasks hung waiting for page lock. It is
> possible that wakeups get lost, which is fixed by this commit in
> mainline
> 777c6c5f1f6e757ae49ecca2ed72d6b1f523c007
>
> Which might also be your bug.
>
>
> Any chance you can test this patch (as well as the existing patches
> you are using to fix write_cache_pages?).
I could test 2.6.28.4
--
Ralf Hildebrandt Ralf.Hildebrandt@charite.de
Charite - Universitätsmedizin Berlin Tel. +49 (0)30-450 570-155
Geschäftsbereich IT | Abt. Netzwerk Fax. +49 (0)30-450 570-962
Hindenburgdamm 30 | 12200 Berlin
next prev parent reply other threads:[~2009-02-09 13:50 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-27 9:35 sync-Regression in 2.6.28.2? Ralf Hildebrandt
2009-01-27 21:09 ` Federico Cuello
2009-02-03 1:09 ` Nick Piggin
2009-02-03 19:51 ` Federico Cuello
2009-02-04 6:17 ` Nick Piggin
2009-02-04 17:31 ` Federico Cuello
2009-02-05 3:25 ` Nick Piggin
2009-02-05 11:54 ` Federico Cuello
2009-02-09 13:45 ` Nick Piggin
2009-02-09 13:49 ` Ralf Hildebrandt [this message]
2009-02-15 13:42 ` Ralf Hildebrandt
2009-02-17 4:17 ` Nick Piggin
2009-02-17 15:15 ` Ralf Hildebrandt
2009-02-05 10:19 ` Ralf Hildebrandt
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