[PATCH v2] set_migratetype_isolate: remove unused variable.

[Luca Tettamanti]

zone_idx is never read inside the function.

Signed-off-by: Luca Tettamanti <kronos.it@xxxxxxxxx>
Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
---
 mm/page_alloc.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 9d5498e..bcbdaf1 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5508,10 +5508,8 @@ int set_migratetype_isolate(struct page *page)
 	struct memory_isolate_notify arg;
 	int notifier_ret;
 	int ret = -EBUSY;
-	int zone_idx;
 
 	zone = page_zone(page);
-	zone_idx = zone_idx(zone);
 
 	spin_lock_irqsave(&zone->lock, flags);
 
-- 
1.7.5.1
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