Remove private struct dx_hash_info from public view in <linux/ext3_fs.h>

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index f327a3b..757d54d 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -661,6 +661,8 @@
 #define DX_HASH_HALF_MD4	1
 #define DX_HASH_TEA		2
 
+#ifdef __KERNEL__
+
 /* hash info structure used by the directory hash */
 struct dx_hash_info
 {
@@ -672,7 +674,6 @@
 
 #define EXT3_HTREE_EOF	0x7fffffff
 
-#ifdef __KERNEL__
 /*
  * Control parameters used by ext3_htree_next_block
  */