diff -urN v2.4.4-ac17/mm/memory.c wrk/mm/memory.c
--- v2.4.4-ac17/mm/memory.c	Thu May 24 19:45:18 2001
+++ wrk/mm/memory.c	Fri May 25 15:10:16 2001
@@ -285,9 +285,9 @@
 		return 0;
 	}
 	ptep = pte_offset(pmd, address);
-	address &= ~PMD_MASK;
-	if (address + size > PMD_SIZE)
-		size = PMD_SIZE - address;
+	offset = address & ~PMD_MASK;
+	if (offset + size > PMD_SIZE)
+		size = PMD_SIZE - offset;
 	size &= PAGE_MASK;
 	for (offset=0; offset < size; ptep++, offset += PAGE_SIZE) {
 		pte_t pte = *ptep;