linux-kernel - Re: [PATCH 0/3] BDI handling fixes

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Message-ID: <20100916234742.GA26030@infradead.org>
Date:	Thu, 16 Sep 2010 19:47:42 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Jan Kara <jack@...e.cz>
Cc:	Jens@...e.cz, "Axboe <axboe"@kernel.dk,
	Christoph Hellwig <hch@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 0/3] BDI handling fixes

On Fri, Sep 17, 2010 at 12:44:08AM +0200, Jan Kara wrote:
> 
>   Hi,
> 
>   series of these three patches fixes the warning in __mark_inode_dirty()
> which happens when I do e.g. touch /dev/zero. The first two patches should
> be obvious enough and probably worth merging independently of the third
> patch. The third patch is upto a discussion whether we want to solve the
> problem that way or differently. Christoph, I know we spoke at LSF that
> inode_to_bdi() could be a per-sb method but the current version of the
> patch seems clean enough to me that we could maybe go even without the
> special callback?

Feel free to go with the simpler one.  But what I think really needs to
be changes is the no writeback flag - it's exactly the wrong way around.

Instead just add a flag to allow writeback for the block device and
fs-specific bdi structures.

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