From: Nick Piggin <npiggin@suse.de>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Christof Schmitt <christof.schmitt@de.ibm.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org
Subject: Re: Wrong DIF guard tag on ext2 write
Date: Tue, 1 Jun 2010 00:49:04 +1000 [thread overview]
Message-ID: <20100531144904.GL9453@laptop> (raw)
In-Reply-To: <yq1iq64kv9f.fsf@sermon.lab.mkp.net>
On Mon, May 31, 2010 at 10:20:44AM -0400, Martin K. Petersen wrote:
> >>>>> "Christof" == Christof Schmitt <christof.schmitt@de.ibm.com> writes:
>
> Christof> Since the guard tags are created in Linux, it seems that the
> Christof> data attached to the write request changes between the
> Christof> generation in bio_integrity_generate and the call to
> Christof> sd_prep_fn.
>
> Yep, known bug. Page writeback locking is messed up for buffer_head
> users. The extNfs folks volunteered to look into this a while back but
> I don't think they have found the time yet.
What do you mean by messed up? Allowing modifications to the page while
it is under writeback? This is deliberate of course and not limited to
buffer_head users either.
next prev parent reply other threads:[~2010-05-31 14:49 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-31 11:28 Wrong DIF guard tag on ext2 write Christof Schmitt
2010-05-31 11:34 ` Christof Schmitt
2010-05-31 14:20 ` Martin K. Petersen
2010-05-31 14:46 ` Christof Schmitt
2010-06-01 13:16 ` Martin K. Petersen
2010-06-02 13:37 ` Christof Schmitt
2010-06-02 23:20 ` Dave Chinner
2010-06-04 1:34 ` Martin K. Petersen
2010-06-04 2:32 ` Dave Chinner
2010-06-07 16:20 ` Martin K. Petersen
2010-06-07 17:22 ` Boaz Harrosh
2010-06-07 17:40 ` Martin K. Petersen
2010-06-08 7:15 ` Christof Schmitt
2010-06-08 8:47 ` Dave Chinner
2010-06-08 8:52 ` Nick Piggin
2010-05-31 14:49 ` Nick Piggin [this message]
2010-06-01 13:17 ` Martin K. Petersen
2010-05-31 15:01 ` James Bottomley
2010-05-31 15:30 ` Boaz Harrosh
2010-05-31 15:49 ` Nick Piggin
2010-05-31 16:25 ` Boaz Harrosh
2010-06-01 13:22 ` Martin K. Petersen
2010-06-01 10:30 ` Christof Schmitt
2010-06-01 10:49 ` Boaz Harrosh
2010-06-01 13:03 ` Chris Mason
2010-06-01 13:50 ` Christof Schmitt
[not found] ` <20100601135059.GA21008@schmichrtp.mainz.de.ibm.com>
2010-06-01 13:58 ` Chris Mason
2010-06-08 7:18 ` Christof Schmitt
2010-06-01 14:26 ` Nick Piggin
2010-06-01 13:27 ` James Bottomley
2010-06-01 13:33 ` Chris Mason
2010-06-01 13:40 ` James Bottomley
2010-06-01 13:49 ` Chris Mason
2010-06-01 16:29 ` Matthew Wilcox
2010-06-01 16:47 ` Chris Mason
2010-06-01 16:54 ` James Bottomley
2010-06-01 18:09 ` Chris Mason
2010-06-01 18:46 ` Nick Piggin
[not found] ` <20100601184649.GE9453@laptop>
2010-06-01 19:35 ` Chris Mason
2010-06-02 3:20 ` Nick Piggin
2010-06-02 13:17 ` Martin K. Petersen
2010-06-02 13:41 ` Nick Piggin
2010-06-03 15:46 ` Chris Mason
2010-06-03 16:27 ` Nick Piggin
[not found] ` <20100603162718.GR6822@laptop>
2010-06-04 1:46 ` Martin K. Petersen
2010-06-04 3:09 ` Nick Piggin
2010-06-04 2:02 ` Dave Chinner
[not found] ` <20100604020243.GE19651@dastard>
2010-06-04 15:32 ` Jan Kara
2010-06-04 1:30 ` Martin K. Petersen
2010-06-01 21:07 ` James Bottomley
2010-06-01 22:49 ` Chris Mason
2010-06-01 13:50 ` Martin K. Petersen
2010-06-01 14:28 ` Nick Piggin
2010-06-01 14:32 ` James Bottomley
2010-06-01 14:54 ` Martin K. Petersen
2010-06-03 11:20 ` Vladislav Bolkhovitin
2010-06-03 12:07 ` Boaz Harrosh
2010-06-03 12:41 ` Vladislav Bolkhovitin
2010-06-03 12:46 ` Vladislav Bolkhovitin
2010-06-09 15:58 ` Vladislav Bolkhovitin
2010-06-03 13:06 ` Boaz Harrosh
2010-06-03 13:23 ` Vladislav Bolkhovitin
2010-07-23 17:59 ` Gennadiy Nerubayev
2010-07-23 19:16 ` Vladislav Bolkhovitin
2010-07-23 20:51 ` Gennadiy Nerubayev
2010-07-26 12:22 ` Vladislav Bolkhovitin
2010-07-26 17:00 ` Gennadiy Nerubayev
2010-07-26 19:26 ` Vladislav Bolkhovitin
2010-07-24 1:03 ` Dave Chinner
2010-06-01 2:40 ` FUJITA Tomonori
2010-06-03 16:09 ` [LFS/VM TOPIC] Stable pages while IO (was Wrong DIF guard tag on ext2 write) Boaz Harrosh
2010-06-03 16:30 ` [Lsf10-pc] " J. Bruce Fields
2010-06-03 17:41 ` Vladislav Bolkhovitin
2010-06-04 16:23 ` Jan Kara
2010-06-04 16:30 ` [Lsf10-pc] " J. Bruce Fields
2010-06-04 17:11 ` Jan Kara
2010-06-06 9:35 ` Boaz Harrosh
2010-06-06 23:37 ` Jan Kara
2010-06-07 8:30 ` Boaz Harrosh
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