XFS on Loop Device on Raid

[Thimo E <abc@xxxxxxxxxx>]

Hello,

I am using XFS on an encrypted loop devices (loop-aes.sourceforge.net) and 
that runs on a software RAID 5 system.
Raid 5 doesn't support variable length transfers, normally xfs recognize it 
and disables them, but here xfs only sees a LOOP device, so variable length 
transfers are enabled and the filesystem gets corrupted in this case.
I found a solution on another list: 
http://mail.nl.linux.org/linux-crypto/2003-12/msg00024.html
This disables variable length transfers on all loop devices...

--- linux-2.4.22aa1r3/fs/xfs/linux/xfs_super.c.old      Fri Dec 12 08:19:49 
2003
+++ linux-2.4.22aa1r3/fs/xfs/linux/xfs_super.c  Fri Dec 12 08:20:58 2003
@@ -303,6 +303,7 @@

        switch (MAJOR(btp->pbr_dev)) {
        case MD_MAJOR:
+       case LOOP_MAJOR:
        case EVMS_MAJOR:
                btp->pbr_flags = PBR_ALIGNED_ONLY;
                break;

Is there another solution ? I have nothing found about this 
interoperability on sgi's website.
bye
  Thimo