xfs: make several more functions static

Just minor housekeeping, a lot more functions can be trivially made
static; others could if we reordered things a bit...

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Alex Elder <aelder@sgi.com>
diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c
index ce6e355..78fc4d9 100644
--- a/fs/xfs/xfs_dir2_node.c
+++ b/fs/xfs/xfs_dir2_node.c
@@ -65,7 +65,7 @@
 /*
  * Log entries from a freespace block.
  */
-void
+STATIC void
 xfs_dir2_free_log_bests(
 	xfs_trans_t		*tp,		/* transaction pointer */
 	xfs_dabuf_t		*bp,		/* freespace buffer */