Yes!  This fixed the problem.  Thank you.

Incidentally, you appear to have already applied this patch to the repository.  Initially, I tried to get a fresh version of grub from Bazaar and patch that.  The patch command reported that the patch was already applied and asked me if I wanted to reverse apply it.  I tried to compile the version in Bazaar and it choked on the bsd module which has run afoul of the newer strict aliasing rules in later versions of gcc (version 4.4.5.)

So, I took the version that I had fetched before and applied xfs.diff to it.  It works great!

I am trying to use grub2 with XFS.  Grub1 works fine.  When I try to boot with grub2, I receive the error "error: not a correct XFS BMAP node."  Then grub2 drops me into rescue mode.

I am using a stock 2.6.35.13 kernel from kernel.org.

I am using the latest grub2 source from Bazaar which I fetched with the command "bzr branch http://bzr.savannah.gnu.org/r/grub/trunk/grub".

The XFS file system was created with the command "mkfs.xfs -f -l size=32m,version=2,lazy-count=1 -b size=512 -n size=512 -i maxpct=0 /dev/sda7".

The partition table is as follows:

fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x3b04f9fd

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *          63    29302559    14651248+   7  HPFS/NTFS/exFAT
/dev/sda2        29302560   976768064   473732752+   5  Extended
/dev/sda5        29302623    58605119    14651248+  83  Linux
/dev/sda6        58605183    87907679    14651248+  83  Linux
/dev/sda7        87907743   117210239    14651248+  83  Linux
/dev/sda8       117210303   976768064   429778881   83  Linux

Let me know if there's any more information you need.