From: Fengguang Wu <wfg@mail.ustc.edu.cn>
To: Joerg Platte <jplatte@naasa.net>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org,
"linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>
Subject: Re: regression: 100% io-wait with 2.6.24-rcX
Date: Mon, 14 Jan 2008 11:54:39 +0800 [thread overview]
Message-ID: <400282904.32255@ustc.edu.cn> (raw)
Message-ID: <E1JEGPH-0001uw-Df@localhost.localdomain> (raw)
In-Reply-To: <20080113115933.GA11045@mail.ustc.edu.cn>
On Sun, Jan 13, 2008 at 07:59:33PM +0800, Fengguang Wu wrote:
> On Sun, Jan 13, 2008 at 10:49:31AM +0100, Joerg Platte wrote:
> > register_jprobe(ext2_writepage) = 0
> > register_jprobe(requeue_io) = 0
> > register_kprobe(submit_bio) = 0
> > requeue_io:
> > inode 114019(sda7/.kde) count 2,2 size 0 pages 1
> > 0 2 0 U____
> > requeue_io:
> > inode 114025(sda7/cache-ibm) count 2,1 size 0 pages 1
> > 0 2 0 U____
> > requeue_io:
> > inode 114029(sda7/socket-ibm) count 2,3 size 0 pages 1
> > 0 2 0 U____
> > requeue_io:
> > inode 114017(sda7/0266584877) count 3,6 size 0 pages 1
> > 0 2 0 U____
>
> It helps. Thank you, Joerg!
>
> The .kde/cache-ibm/socket-ibm/0266584877 above are directories.
> It's weird that dirs would have their own mappings in ext2. In
Oh, ext2 dirs have their own mapping pages. Not the same with ext3.
> particular this bug is triggered because the dir mapping page has
> PAGECACHE_TAG_DIRTY set and PG_dirty cleared, staying in an
> inconsistent state.
Just found that a deleted dir will enter that inconsistent state when
someone still have reference to it...
next prev parent reply other threads:[~2008-01-14 3:54 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-07 10:51 regression: 100% io-wait with 2.6.24-rcX Joerg Platte
2008-01-07 11:19 ` Ingo Molnar
2008-01-07 13:24 ` Joerg Platte
2008-01-07 13:32 ` Peter Zijlstra
2008-01-07 13:40 ` Joerg Platte
2008-01-09 3:27 ` Fengguang Wu
2008-01-09 3:27 ` Fengguang Wu
2008-01-09 6:13 ` Joerg Platte
2008-01-09 12:04 ` Fengguang Wu
2008-01-09 12:04 ` Fengguang Wu
2008-01-09 12:22 ` Joerg Platte
2008-01-09 12:57 ` Fengguang Wu
2008-01-09 12:57 ` Fengguang Wu
2008-01-09 13:04 ` Joerg Platte
2008-01-10 6:58 ` Fengguang Wu
2008-01-10 6:58 ` Fengguang Wu
2008-01-10 7:30 ` Fengguang Wu
2008-01-10 7:30 ` Fengguang Wu
[not found] ` <20080110073046.GA3432@mail.ustc.edu.cn>
2008-01-10 7:53 ` Fengguang Wu
2008-01-10 7:53 ` Fengguang Wu
2008-01-10 8:37 ` Joerg Platte
2008-01-10 8:43 ` Fengguang Wu
2008-01-10 8:43 ` Fengguang Wu
2008-01-10 10:03 ` Joerg Platte
2008-01-11 4:43 ` Fengguang Wu
2008-01-11 4:43 ` Fengguang Wu
2008-01-11 5:29 ` Joerg Platte
2008-01-11 6:41 ` Joerg Platte
2008-01-12 23:32 ` Joerg Platte
2008-01-13 6:44 ` Fengguang Wu
2008-01-13 6:44 ` Fengguang Wu
2008-01-13 8:05 ` Joerg Platte
2008-01-13 8:21 ` Fengguang Wu
2008-01-13 8:21 ` Fengguang Wu
2008-01-13 9:49 ` Joerg Platte
2008-01-13 11:59 ` Fengguang Wu
2008-01-13 11:59 ` Fengguang Wu
[not found] ` <20080113115933.GA11045@mail.ustc.edu.cn>
2008-01-14 3:54 ` Fengguang Wu [this message]
2008-01-14 3:54 ` Fengguang Wu
[not found] ` <20080114035439.GA7330@mail.ustc.edu.cn>
2008-01-14 9:55 ` Fengguang Wu
2008-01-14 9:55 ` Fengguang Wu
2008-01-14 11:30 ` Joerg Platte
2008-01-14 11:30 ` Joerg Platte
2008-01-14 11:41 ` Peter Zijlstra
2008-01-14 12:50 ` Fengguang Wu
2008-01-14 12:50 ` Fengguang Wu
2008-01-15 21:13 ` Mike Snitzer
2008-01-16 5:25 ` Fengguang Wu
2008-01-16 5:25 ` Fengguang Wu
2008-01-15 21:42 ` Ingo Molnar
2008-01-16 5:14 ` Fengguang Wu
2008-01-16 5:14 ` Fengguang Wu
-- strict thread matches above, loose matches on Subject: below --
2008-01-16 9:26 Martin Knoblauch
2008-01-16 12:00 ` Fengguang Wu
2008-01-16 12:00 ` Fengguang Wu
2008-01-16 14:15 Martin Knoblauch
2008-01-16 16:27 ` Mike Snitzer
2008-01-17 13:52 Martin Knoblauch
2008-01-17 16:11 ` Mike Snitzer
2008-01-17 17:44 Martin Knoblauch
2008-01-17 20:23 ` Mel Gorman
2008-01-17 17:51 Martin Knoblauch
2008-01-17 21:50 Martin Knoblauch
2008-01-17 22:12 ` Mel Gorman
2008-01-18 8:19 Martin Knoblauch
2008-01-18 16:01 ` Mel Gorman
2008-01-18 17:46 ` Linus Torvalds
2008-01-18 19:01 ` Martin Knoblauch
2008-01-18 19:23 ` Linus Torvalds
2008-01-22 14:39 ` Alasdair G Kergon
2008-01-18 20:00 ` Mike Snitzer
2008-01-18 22:47 ` Mike Snitzer
2008-01-19 10:24 Martin Knoblauch
2008-01-22 15:25 Martin Knoblauch
2008-01-22 23:40 ` Alasdair G Kergon
2008-01-22 18:51 Martin Knoblauch
2008-01-23 11:12 Martin Knoblauch
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