On Tue, Jan 13, 2009 at 04:48:42PM -0800, Andrew Morton wrote:

Well that's not good.  I don't recall us making any changes which
affect the orphan list handling.  Perhaps "filesystem freeze: add error
handling of write_super_lockfs/unlockfs", but only indirectly.

Does Arjan's new async stuff play with filesystems at umount/shutdown
time?  Don't think so.

Well, Arjan's commit, efaee192: "async: make the final inode deletion
an asynchronous event", does change how inodes get deleted, and this
looks like a race where an inode is getting deleted during the umount.

So I would try reverting commit efaee192 and see if it fixes things
before starting a full bisect...

							- Ted