ext4: use %pd printk specificer

Use the new %pd printk() specifier in Ext4 to replace passing of
dentry name or dentry name and name length * 2 with just passing the
dentry.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
cc: Andreas Dilger <adilger.kernel@dilger.ca>
cc: linux-ext4@vger.kernel.org
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 5a0408d..3e9e706 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1425,9 +1425,8 @@
 			return ERR_PTR(-EIO);
 		}
 		if (unlikely(ino == dir->i_ino)) {
-			EXT4_ERROR_INODE(dir, "'%.*s' linked to parent dir",
-					 dentry->d_name.len,
-					 dentry->d_name.name);
+			EXT4_ERROR_INODE(dir, "'%pd' linked to parent dir",
+					 dentry);
 			return ERR_PTR(-EIO);
 		}
 		inode = ext4_iget(dir->i_sb, ino);