9p: convert d_iname references to d_name.name

d_iname is rubbish for long file names.
Use d_name.name in printks instead.

Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Acked-by: Eric Van Hensbergen <ericvh@gmail.com>

fs/9p/vfs_inode.c

@@ -963,7 +963,8 @@ static int v9fs_vfs_readlink(struct dentry *dentry, char __user * buffer,
 	if (buflen > PATH_MAX)
 		buflen = PATH_MAX;
 
-	P9_DPRINTK(P9_DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
+	P9_DPRINTK(P9_DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_name.name,
+									dentry);
 
 	retval = v9fs_readlink(dentry, link, buflen);