[PATCH] mm: remove unused zone_idx variable fromset_migratetype_isolate

[Sergey Senozhatsky]

mm: remove unused variable zone_idx and zone_idx call from set_migratetype_isolate

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>

---

 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 7945247..b732240 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5414,10 +5414,8 @@ 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);
 
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