From: Con Kolivas <kernel@kolivas.org>

Use the pgdat pointer we've already defined in wakeup_kswapd

Signed-off-by: Con Kolivas <kernel@kolivas.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 mm/vmscan.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff -puN mm/vmscan.c~vm-kswapd-cleanup-use-pgdat mm/vmscan.c
--- 25/mm/vmscan.c~vm-kswapd-cleanup-use-pgdat	Fri Sep  9 17:07:49 2005
+++ 25-akpm/mm/vmscan.c	Fri Sep  9 17:07:49 2005
@@ -1258,9 +1258,9 @@ void wakeup_kswapd(struct zone *zone, in
 		pgdat->kswapd_max_order = order;
 	if (!cpuset_zone_allowed(zone, __GFP_HARDWALL))
 		return;
-	if (!waitqueue_active(&zone->zone_pgdat->kswapd_wait))
+	if (!waitqueue_active(&pgdat->kswapd_wait))
 		return;
-	wake_up_interruptible(&zone->zone_pgdat->kswapd_wait);
+	wake_up_interruptible(&pgdat->kswapd_wait);
 }
 
 #ifdef CONFIG_PM
_