Improper initrd failure message at boot time

On system boot up, there was an failure reported to boot.msg:

<5>Trying to move old root to /initrd ... failed

According to initrd(4) man page, step #7 of BOOT-UP OPERATION is described as below:
7. If the normal root file has directory /initrd, device
/dev/ram0 is moved from / to /initrd. Otherwise if
directory /initrd does not exist device /dev/ram0 is unmounted.

We got service calls from customers concerning about this failure message at boot time. Many systems do not have /initrd and thus the message can be changed in the case of non-existing /initrd so that it does not sound like a failure of the system.

Index: linux/init/do_mounts_initrd.c
===================================================================
@@ -86,7 +86,10 @@ static void __init handle_initrd(void)
 		printk("okay\n");
 	else {
 		int fd = sys_open("/dev/root.old", O_RDWR, 0);
-		printk("failed\n");
+		if (error == -ENOENT)
+			printk("/initrd does not exist. Ignored.\n");
+		else
+			printk("failed\n");
 		printk(KERN_NOTICE "Unmounting old root\n");
 		sys_umount("/old", MNT_DETACH);
 		printk(KERN_NOTICE "Trying to free ramdisk memory ... ");