linux-kernel - Re: - jbd-strictly-check-for-write-errors-on-data-buffers.patch removed from -mm tree

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Message-Id: <20080610021746.51e5cfa8.akpm@linux-foundation.org>
Date:	Tue, 10 Jun 2008 02:17:46 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>
Cc:	jack@...e.cz, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Satoshi OSHIMA <satoshi.oshima.fk@...achi.com>,
	sugita <yumiko.sugita.yf@...achi.com>
Subject: Re: - jbd-strictly-check-for-write-errors-on-data-buffers.patch
 removed from -mm tree

On Tue, 10 Jun 2008 17:51:35 +0900 Hidehiro Kawai <hidehiro.kawai.ez@...achi.com> wrote:

> Hello Andrew,
> 
> akpm@...ux-foundation.org wrote:
> 
> > The patch titled
> >      jbd: strictly check for write errors on data buffers
> > has been removed from the -mm tree.  Its filename was
> >      jbd-strictly-check-for-write-errors-on-data-buffers.patch
> > 
> > This patch was dropped because I don't think we want to go read-only on file data write errors
> > 
> > The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
> > 
> > ------------------------------------------------------
> > Subject: jbd: strictly check for write errors on data buffers
> > From: Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>
> 
> This patch series doesn't change the behavior on file data write
> errors as I stated before, but we found that the current behavior has
> been made accidentally.  So yesterday I sent an additional patch(*)
> which removes the invocation of journal_abort() and thus stop making
> the fs read-only on file data write errors, but it seems to be late
> for the -mm release preparation.
> 
>   Patch(*) can be found at:
>   http://marc.info/?l=linux-kernel&m=121300618614453&w=2
> 
> Anyway, as this patch series was dropped from -mm, I'm going to
> send a revised version.
> 
> I plan to separate these pathces into three patche set. 
> The first patch (set) corrects the current behavior in ordered
> writes, it means it removes the invocation of journal_abort() on file
> data write errors.  It is the almost same as the patch(*).
> The second patch set fixes error handlings for metadata writes and
> checkpointing.  It should be applied independently of the first
> patch set, and it is the same as PATCH 3/5 to 5/5.
> The third patch set makes "abort the journal on file data write errors"
> tunable for mission critical users.  Of course, this feature depends
> on the first patch set.
> 

That sounds like a good plan, thanks.
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