Andrew Morton wrote:
 >On Sat,  5 Jan 2008 09:52:15 -0800 (PST) 
bugme-daemon@bugzilla.kernel.org wrote:
 >> http://bugzilla.kernel.org/show_bug.cgi?id=9692
 >>
 >>            Summary: journal_data mount option causes filesystem 
corruption
 >>                     with blocksize != 4096
 >>            Product: File System
 >>            Version: 2.5
 >>      KernelVersion: 2.6.23.9
 >>           Platform: All
 >>         OS/Version: Linux
 >>               Tree: Mainline
 >>             Status: NEW
 >>           Severity: high
 >>           Priority: P1
 >>          Component: ext3
 >>         AssignedTo: akpm@osdl.org
 >>         ReportedBy: h.judt@gmx.at

This looks to be an off-by-one bug with e2fsck in the function
check_blocks(), and there isn't any actual filesystem corruption
(e2fsck causes the corruption).

Please see the attached patch, which fixes the problem for me.

Jayson King