[PATCH 1/5] mm: memcontrol: Remove redundant hot plug notifier test.

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The test for ONLINE is redundant because the following test for !DEAD
already includes the online case.  This patch removes the superfluous
code.

Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
Cc: cgroups@xxxxxxxxxxxxxxx
Cc: linux-mm@xxxxxxxxx
Signed-off-by: Richard Cochran <rcochran@xxxxxxxxxxxxx>
---
 mm/memcontrol.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d06cae2..993a261 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1916,9 +1916,6 @@ static int memcg_cpu_hotplug_callback(struct notifier_block *nb,
 	int cpu = (unsigned long)hcpu;
 	struct memcg_stock_pcp *stock;
 
-	if (action == CPU_ONLINE)
-		return NOTIFY_OK;
-
 	if (action != CPU_DEAD && action != CPU_DEAD_FROZEN)
 		return NOTIFY_OK;
 
-- 
2.1.4

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