Hello,
    I am reporting the same problem that kelley eicher
has, "0-order allocation failed (gfp=0x70/1)", hopefully
my info is helpfull. I added BUG() after the printk's in
"mm/page_alloc.c:505". I am able to get this message
when ever I copy a large (2+ gig) file from one XFS filesystem
to another on the same disk controller. I have attached klogd -p output
and an output of /proc/slabinfo from <= 1 second before the
Oops. If anyone would like more info, or for me to apply dangerous
patches, or to shut up even, let me know.

Jack

Machine:
Kernel Version 2.4.10-pre8 with SGI-XFS patches and IBM-JFS patches.
compiled with egcs 2.91-66 ;) (Some more info @ http://whatevr.i2net.com)
SMP P3 Box with 2 Gig of memory
Disk controller that helps to get this message: cpqarray (Smart Array 
3200 with 6 disks)