CLOSE 801246 - XFS on loopback mount doesn't work

[pv@xxxxxxxxxxxxx (lord@xxxxxxx)]

View Incident: 
http://co-op.engr.sgi.com/BugWorks/code/bwxquery.cgi?search=Search&wlong=1&view_type=Bug&wi=801246

*Status : closed                       Priority : 3                         
 Assigned Engineer : nb                Submitter : dxm                      
 Opened Date : 09/07/00               *Closed Date : 10/20/00               
*Fixed By : lord                      *Fixed By Domain : sgi.com            
*Modified Date : 10/20/00             *Modified User : lord                 
*Modified User Domain : sgi.com       *Fix Description :
==========================
ADDITIONAL INFORMATION (CLOSE)
From: lord@xxxxxxx (BugWorks)
Date: Oct 20 2000 08:09:19AM
==========================

I checked in some basic code to make loopback at least function.
I suspect there will be holes in the implementation. I have
mounted an ext2 filesystem in a file on an xfs filesystem,
I also mounted an xfs filesystem in a file on an xfs filesystem.