[PATCH] mm: compact: fix zoneindex in compact

[Chen Feng]

While testing the kcompactd in my platform 3G MEM only DMA ZONE.
I found the kcompactd never wakeup. It seems the zoneindex
has already minus 1 before. So the traverse here should be <=.

Signed-off-by: Chen Feng <puck.c...@hisilicon.com>
---
 mm/compaction.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/compaction.c b/mm/compaction.c
index 8fa2540..e5122d9 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1742,7 +1742,7 @@ static bool kcompactd_node_suitable(pg_data_t *pgdat)
        struct zone *zone;
        enum zone_type classzone_idx = pgdat->kcompactd_classzone_idx;
 
-       for (zoneid = 0; zoneid < classzone_idx; zoneid++) {
+       for (zoneid = 0; zoneid <= classzone_idx; zoneid++) {
                zone = &pgdat->node_zones[zoneid];
 
                if (!populated_zone(zone))
-- 
1.9.1