[PATCH v13 04/16] memcg: move memcg_caches_array_size() function

[Vladimir Davydov <vdavydov@parallels.com>]

I need to move this up a bit, and I am doing in a separate patch just to
reduce churn in the patch that needs it.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Glauber Costa <glommer@openvz.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
---
 mm/memcontrol.c |   30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 3a4e2f8..220b463 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2983,6 +2983,21 @@ static int memcg_cache_idx(struct mem_cgroup *memcg)
 	return ret;
 }
 
+static size_t memcg_caches_array_size(int num_groups)
+{
+	ssize_t size;
+	if (num_groups <= 0)
+		return 0;
+
+	size = 2 * num_groups;
+	if (size < MEMCG_CACHES_MIN_SIZE)
+		size = MEMCG_CACHES_MIN_SIZE;
+	else if (size > MEMCG_CACHES_MAX_SIZE)
+		size = MEMCG_CACHES_MAX_SIZE;
+
+	return size;
+}
+
 /*
  * This is a bit cumbersome, but it is rarely used and avoids a backpointer
  * in the memcg_cache_params struct.
@@ -3125,21 +3140,6 @@ int memcg_update_cache_sizes(struct mem_cgroup *memcg)
 	return 0;
 }
 
-static size_t memcg_caches_array_size(int num_groups)
-{
-	ssize_t size;
-	if (num_groups <= 0)
-		return 0;
-
-	size = 2 * num_groups;
-	if (size < MEMCG_CACHES_MIN_SIZE)
-		size = MEMCG_CACHES_MIN_SIZE;
-	else if (size > MEMCG_CACHES_MAX_SIZE)
-		size = MEMCG_CACHES_MAX_SIZE;
-
-	return size;
-}
-
 /*
  * We should update the current array size iff all caches updates succeed. This
  * can only be done from the slab side. The slab mutex needs to be held when
-- 
1.7.10.4

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