linux-ext4 - Re: Ordered mode rewrite patch

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Date:	Tue, 8 Apr 2008 23:10:52 +0200
From:	Jan Kara <jack@...e.cz>
To:	Josef Bacik <jbacik@...hat.com>
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 08-04-08 11:47:04, Josef Bacik wrote:
> 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.
  Strange, I've already been fixing these. Aww, I thought diff contained
all the changes and obviously the branch in git contained some further
fixes :(. Hopefully I've at least committed changes and will be able to
find fixes among git objects...

								Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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