tree a94f8ab8798dd70b0b272ece0f95c1f0e55d7691
parent 83e782e1a1cc0159888e58e14dfc8f3289663338
author Eric Sandeen <sandeen@sandeen.net> 1332955271 -0500
committer Ben Myers <bpm@sgi.com> 1373394075 -0500

xfs: use XFS_BMAP_BMDR_SPACE vs. XFS_BROOT_SIZE_ADJ

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@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>