diff -Naru a/include/linux/mm.h b/include/linux/mm.h
--- a/include/linux/mm.h	2005-10-20 02:28:22 -07:00
+++ b/include/linux/mm.h	2005-10-20 02:28:22 -07:00
@@ -41,6 +41,8 @@
 #define MM_VM_SIZE(mm)	TASK_SIZE
 #endif
 
+#define nth_page(page,n) (pfn_to_page(page_to_pfn((page)) + n))
+
 /*
  * Linux kernel virtual memory manager primitives.
  * The idea being to have a "virtual" mm in the same way
# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2004/10/28 08:18:25-07:00 jgarzik@pobox.com 
#   [PATCH] add nth_page()
#   
#   Provide a function to get the pageframe number of the nth page at
#   scatterlist.page.  We cannot just index off scatterlist.page because the
#   physically-contiguous pages may not be contiguous in mem_map[].
#   
#   Signed-off-by: Andrew Morton <akpm@osdl.org>
#   Signed-off-by: Linus Torvalds <torvalds@osdl.org>
# 
# include/linux/mm.h
#   2004/10/28 00:56:39-07:00 jgarzik@pobox.com +2 -0
#   add nth_page()
#