linux-kernel - Re: reiser4: newbie help needed?

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Message-Id: <20091204092527.a5117191.buchner.johannes@gmx.at>
Date:	Fri, 4 Dec 2009 09:25:27 +1300
From:	Johannes Buchner <buchner.johannes@....at>
To:	Edward Shishkin <edward.shishkin@...il.com>
Cc:	reiserfs-devel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: reiser4: newbie help needed?

On Wed, 02 Dec 2009 10:21:18 +0100
Edward Shishkin <edward.shishkin@...il.com> wrote:

> Johannes Buchner wrote:
> >  I took a look at the TODO lists, are there any simple tasks to
> > do for newbies?
> 
> If you mean the "todo for inclusion", then no.
> 
> Reiser4 has only one technical issue. It can
> be resolved only by very experienced people.

Thanks for replying. I did not have to the inclusion of
reiser4 in mind specifically.

> > I also believe that on 'sync', reiser4 currently does absolutely
> > nothing.
> 
> this is not good: a file system should respond on sync (1).
> 
> >  The comment in reiser4_sync_inodes says reiser4 does its own
> > flush elsewhere. Should this be different?
> >   
> 
> you might want to ask such question _before_ sending patches to akpm. 

I was under the believe that I did not change the behaviour. I see my
mistake now, I was looking at the wrong if-branch. 

I tried now to come up with a correct version for some hours, but I keep
having NULL problems. Maybe a writeback_control object has to be
created, possibly even in fs/fs-writeback.c:sync_inodes_sb, as
write_inode_now does below. I tried that too, but it gave me a
recursion. I'm not sure what the rationale was for introducing a call
with NULL here. Sorry I can't correct this.

Looking forward to your review.

Best wishes,
Johannes

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