linux-ext4 - Re: Ordered mode rewrite patch

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Message-ID: <20080408154704.GO22429@unused.rdu.redhat.com>
Date:	Tue, 8 Apr 2008 11:47:04 -0400
From:	Josef Bacik <jbacik@...hat.com>
To:	Jan Kara <jack@...e.cz>
Cc:	Nathan Grennan <jack@...nusx-1.org>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	linux-ext4@...r.kernel.org
Subject: Re: Ordered mode rewrite patch

On Tue, Apr 08, 2008 at 02:11:49PM +0200, Jan Kara wrote:
>   Hello,
> 
>   attached is a jumbo patch that reverses locking order of transaction
> start and page lock in ext3 and rewrites handling of ordered data mode in
> JBD and ext3. Note that the patch will break compilation of ext4 and OCFS2.
> The patch survives LTP run on my test machine so it shouldn't eat your data
> immediately but bugs are of course possible...
>   I'm very interested in any results (both positive and negative) you could
> get with it :). Thanks for testing it.
> 
> 									Honza
> 
> PS: CCing also linux-ext4 list in case there are some other interested
> testers. Next on my todo list is to port this for ext4...
> -- 
> Jan Kara <jack@...e.cz>
> SUSE Labs, CR

Just glancing over it everything looks to be ok, but I still can't compile with
ext3/jbd being modules :).  I had to EXPORT_SYMBOL do_writepages,
__filemap_fdatawrite_range and all the jbd things you added to make it build
properly.  I will do some testing with it while I'm in class.

Josef
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