From: Akinobu Mita <mita@miraclelinux.com>

When we've allocated SWAPFILE_CLUSTER pages, ->cluster_next should be the
first index of swap cluster.  But current code probably sets it wrong offset.

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 mm/swapfile.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -puN mm/swapfile.c~fix-swap-cluster-offset mm/swapfile.c
--- 25/mm/swapfile.c~fix-swap-cluster-offset	Wed Mar 15 14:16:05 2006
+++ 25-akpm/mm/swapfile.c	Wed Mar 15 14:16:05 2006
@@ -116,7 +116,7 @@ static inline unsigned long scan_swap_ma
 				last_in_cluster = offset + SWAPFILE_CLUSTER;
 			else if (offset == last_in_cluster) {
 				spin_lock(&swap_lock);
-				si->cluster_next = offset-SWAPFILE_CLUSTER-1;
+				si->cluster_next = offset-SWAPFILE_CLUSTER+1;
 				goto cluster;
 			}
 			if (unlikely(--latency_ration < 0)) {
_