[readdir] convert ext4

and trim the living hell out bogosities in inline dir case

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 5aae3d1..4af03ea 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2515,7 +2515,7 @@
 				      struct inode *parent,
 				      struct inode *inode);
 extern int ext4_read_inline_dir(struct file *filp,
-				void *dirent, filldir_t filldir,
+				struct dir_context *ctx,
 				int *has_inline_data);
 extern int htree_inlinedir_to_tree(struct file *dir_file,
 				   struct inode *dir, ext4_lblk_t block,