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

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

include/linux/ext3_fs.h

@@ -661,6 +661,8 @@ struct ext3_dir_entry_2 {
 #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 @@ struct dx_hash_info
 
 #define EXT3_HTREE_EOF	0x7fffffff
 
-#ifdef __KERNEL__
 /*
  * Control parameters used by ext3_htree_next_block
  */