[PATCH] (1/2) i386 discontigmem support against 2.4.21pre1: paddr_to_pfn

This patch was originally written by Martin Bligh.

It changes all references of node_start_paddr and zone_start_paddr 
to node_start_pfn and zone_start_pfn.  This change is required to 
support PAE for i386 discontigmem.  It allows a starting address 
for a node or zone to be greater than 4GB. A version of this patch 
is in the 2.4 aa tree and has also been accepted into the v2.5 tree 
starting with 2.5.34.

I've tested this patch on the following configurations: UP, SMP, SMP PAE, 
multiquad, multiquad PAE, multiquad DISCONTIGMEM, multiquad DISCONTIGMEM PAE.

Any and all feedback regarding this patch is greatly appreciated.

Thanks,
Pat

-- 
Patricia Gaughen (gone@us.ibm.com)
IBM Linux Technology Center
http://www.ibm.com/linux/ltc/