linux-kernel - [PATCH] mm: memcontrol: Skip test_mem_cgroup_node_reclaimable() when no MAX

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Message-ID: <5482316D.607@gmail.com>
Date:	Sat, 06 Dec 2014 06:27:57 +0800
From:	Chen Gang <gang.chen.5i5j@...il.com>
To:	hannes@...xchg.org, mhocko@...e.cz
CC:	cgroups@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-mm@...ck.org
Subject: [PATCH] mm: memcontrol: Skip test_mem_cgroup_node_reclaimable() when
 no MAX_NUMNODES or not more than 1

test_mem_cgroup_node_reclaimable() is only used when "MAX_NUMNODES > 1",
so move it into related quote.

The related warning (with allmodconfig under parisc):

    CC      mm/memcontrol.o
  mm/memcontrol.c:1629:13: warning: 'test_mem_cgroup_node_reclaimable' defined but not used [-Wunused-function]
   static bool test_mem_cgroup_node_reclaimable(struct mem_cgroup *memcg,
               ^

Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
---
 mm/memcontrol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c6ac50e..d538b08 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1616,6 +1616,7 @@ static void mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask,
 			 NULL, "Memory cgroup out of memory");
 }
 
+#if MAX_NUMNODES > 1
 /**
  * test_mem_cgroup_node_reclaimable
  * @memcg: the target memcg
@@ -1638,7 +1639,6 @@ static bool test_mem_cgroup_node_reclaimable(struct mem_cgroup *memcg,
 	return false;
 
 }
-#if MAX_NUMNODES > 1
 
 /*
  * Always updating the nodemask is not very good - even if we have an empty
-- 
1.9.3
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