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Re: [PATCH 19/27] xfs: kill struct xfs_dir2_data

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: [PATCH 19/27] xfs: kill struct xfs_dir2_data
From: Alex Elder <aelder@xxxxxxx>
Date: Tue, 5 Jul 2011 22:38:35 -0500
Cc: <xfs@xxxxxxxxxxx>
In-reply-to: <20110701094606.199361663@xxxxxxxxxxxxxxxxxxxxxx>
References: <20110701094321.936534538@xxxxxxxxxxxxxxxxxxxxxx> <20110701094606.199361663@xxxxxxxxxxxxxxxxxxxxxx>
Reply-to: <aelder@xxxxxxx>
On Fri, 2011-07-01 at 05:43 -0400, Christoph Hellwig wrote:
> Remove the confusing xfs_dir2_data structure.  It is supposed to describe
> an XFS dir2 data btree block, but due to the variable sized nature of
> almost all elements in it it can't actuall do anything close to that
> job.  In addition to accessing the fixed offset header structure it was
> only used to get a pointer to the first dir or unused entry after it,
> which can be trivially replaced by pointer arithmetics on the header
> pointer.  For most users that is actually more natural anyway, as they
> don't use a typed pointer but rather a character pointer for further
> arithmetics.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Looks good.  I like the diagrams.

Reviewed-by: Alex Elder <aelder@xxxxxxx>


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