[PATCH 2/1] xfs: use XFS_BMAP_BMDR_SPACE vs. XFS_BROOT_SIZE_ADJ

[Dave Chinner]

On Wed, Mar 28, 2012 at 12:21:11PM -0500, Eric Sandeen wrote:
> XFS_BROOT_SIZE_ADJ is an undocumented macro which accounts for
> the difference in size between the on-disk and in-core btree
> root.  It's much clearer to just use the newly-added 
> XFS_BMAP_BMDR_SPACE macro which gives us the on-disk size
> directly.
> 
> In one case, we must test that the if_broot exists before
> applying the macro, however.
> 
> Signed-off-by: Eric Sandeen <sandeen at redhat.com>

Looks good.

Reviewed-by: Dave Chinner <dchinner at redhat.com>
-- 
Dave Chinner
david at fromorbit.com