[PATCH] Use ZVC for free_pages

This is again simplifies some of the VM counter calculations through the use
of the ZVC consolidated counters.

[michal.k.k.piotrowski@gmail.com: build fix]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index 31aa039..7fb8343 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -230,9 +230,10 @@
 		for_each_zone (zone)
 			if (populated_zone(zone)) {
 				if (is_highmem(zone)) {
-					highmem_size -= zone->free_pages;
+					highmem_size -=
+					zone_page_state(zone, NR_FREE_PAGES);
 				} else {
-					tmp -= zone->free_pages;
+					tmp -= zone_page_state(zone, NR_FREE_PAGES);
 					tmp += zone->lowmem_reserve[ZONE_NORMAL];
 					tmp += snapshot_additional_pages(zone);
 				}