[PATCH] ext4: fix build failure if DX_DEBUG

[Li Zefan <lizf@cn.fujitsu.com>]

I got build failure when I turned on DX_DEBUG.

fs/ext4/namei.c: In function ‘dx_show_leaf’:
fs/ext4/namei.c:291: error: implicit declaration of function ‘ext4_next_entry’
fs/ext4/namei.c:291: warning: assignment makes pointer from integer without a cast

Move the definition of ext4_next_entry() upwards just as ext3 code.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---
 fs/ext4/namei.c |   19 ++++++++++---------
 1 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index ab16bea..4315fd7 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -183,6 +183,16 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry,
 			     struct inode *inode);
 
 /*
+ * p is at least 6 bytes before the end of page
+ */
+static inline struct ext4_dir_entry_2 *
+ext4_next_entry(struct ext4_dir_entry_2 *p)
+{
+	return (struct ext4_dir_entry_2 *)((char *)p +
+		ext4_rec_len_from_disk(p->rec_len));
+}
+
+/*
  * Future: use high four bits of block for coalesce-on-delete flags
  * Mask them off for now.
  */
@@ -554,15 +564,6 @@ static int ext4_htree_next_block(struct inode *dir, __u32 hash,
 
 
 /*
- * p is at least 6 bytes before the end of page
- */
-static inline struct ext4_dir_entry_2 *ext4_next_entry(struct ext4_dir_entry_2 *p)
-{
-	return (struct ext4_dir_entry_2 *)((char *)p +
-		ext4_rec_len_from_disk(p->rec_len));
-}