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Re: [PATCH 14/25] xfs: remove xfs_bmap_add_extent

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: [PATCH 14/25] xfs: remove xfs_bmap_add_extent
From: Alex Elder <aelder@xxxxxxx>
Date: Fri, 9 Sep 2011 18:55:49 -0500
Cc: <xfs@xxxxxxxxxxx>
In-reply-to: <20110824060643.401685261@xxxxxxxxxxxxxxxxxxxxxx>
References: <20110824060428.789245205@xxxxxxxxxxxxxxxxxxxxxx> <20110824060643.401685261@xxxxxxxxxxxxxxxxxxxxxx>
Reply-to: <aelder@xxxxxxx>
On Wed, 2011-08-24 at 02:04 -0400, Christoph Hellwig wrote:
> plain text document attachment (xfs-bmapi-split-xfs_bmap_extent-2)
> There is no real need to the xfs_bmap_add_extent, as the callers know what
> kind of extents they need to it.  Removing it means duplicating the
> extents to btree conversion logic in three places, but overall it's still
> a lot less, and much simpler code.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Not really a *lot* less code, but it is an improvement.

Simple question below (coding style) but this looks good.

Reviewed-by: Alex Elder <aelder@xxxxxxx>


. . .

>  
> +#ifdef DEBUG
> +STATIC void
> +xfs_bmap_check_leaf_extents(
> +     struct xfs_btree_cur    *cur,
> +     struct xfs_inode        *ip,
> +     int                     whichfork);
> +#else
> +#define xfs_bmap_check_leaf_extents(cur, ip, whichfork)              do { } 
> while (0)
> +#endif

Why do you use "do {} while (0)" rather than just an empty right
hand side? 

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