kmem_alloc deadlock in SLES9 SP3

I'm getting occassional system freezes preceded by spurious kmem_deadlock messages.
The system is running SLES9 SP3, xfs with large (~1GB) fragmented files, using real-time section.
The message is

Jan  8 06:27:55 ce-9 kernel: XFS: possible memory allocation deadlock

in kmem_alloc (mode:0x2d0)

ce-9:~ # uname -a
Linux ce-9 2.6.5-7.276-bigsmp #2 SMP Tue Sep 19 05:27:23 IDT 2006 i686 i686 i386 GNU/Linux

The similar bug report http://oss.sgi.com/bugzilla/show_bug.cgi?id=410
recommends upgrading to 2.6.17 to make use of new incore extent management code.
Is there a version of commercial Linux (RHEL/SLES) that incorporates this fix? SLES10 is based on 2.6.16 kernel.

--alan

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