compiler warning after applying btree patches

[Lachlan McIlroy <lachlan@sgi.com>]

Christoph,

After applying the first round of btree patches we've now got this warning
when building a non-debug xfs module.

  CC      fs/xfs/xfs_btree.o
fs/xfs/xfs_btree.c:191: warning: ‘xfs_btree_check_ptr’ defined but not used

I took a quick look through your next round of btree patches but couldn't
see a fix for it.  Did I miss something in the original patch set?  Is it
fixed in a later patch?  If not here's a fix:

--- a/fs/xfs/xfs_btree.c	2008-09-29 17:19:24.000000000 +1000
+++ b/fs/xfs/xfs_btree.c	2008-09-29 17:22:33.000000000 +1000
@@ -160,6 +160,7 @@ xfs_btree_check_lptr(
 	return 0;
 }
 
+#ifdef DEBUG
 /*
  * Check that (short) pointer is ok.
  */
@@ -197,6 +198,7 @@ xfs_btree_check_ptr(
 				be32_to_cpu((&ptr->s)[index]), level);
 	}
 }
+#endif
 
 /*
  * Delete the btree cursor.