mm: memcontrol: remove unnecessary memcg argument from soft limit functions

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Jianyu Zhan <nasa4836@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 14 insertions, 20 deletions

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 41c1b393fef5..a9559b91603c 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -713,11 +713,9 @@ soft_limit_tree_from_page(struct page *page)
         return &soft_limit_tree.rb_tree_per_node[nid]->rb_tree_per_zone[zid];
 }
 
-static void
-__mem_cgroup_insert_exceeded(struct mem_cgroup *memcg,
-                                struct mem_cgroup_per_zone *mz,
-                                struct mem_cgroup_tree_per_zone *mctz,
-                                unsigned long long new_usage_in_excess)
+static void __mem_cgroup_insert_exceeded(struct mem_cgroup_per_zone *mz,
+                                         struct mem_cgroup_tree_per_zone *mctz,
+                                         unsigned long long new_usage_in_excess)
 {
         struct rb_node **p = &mctz->rb_root.rb_node;
         struct rb_node *parent = NULL;
@@ -747,10 +745,8 @@ __mem_cgroup_insert_exceeded(struct mem_cgroup *memcg,
         mz->on_tree = true;
 }
 
-static void
-__mem_cgroup_remove_exceeded(struct mem_cgroup *memcg,
-                                struct mem_cgroup_per_zone *mz,
-                                struct mem_cgroup_tree_per_zone *mctz)
+static void __mem_cgroup_remove_exceeded(struct mem_cgroup_per_zone *mz,
+                                         struct mem_cgroup_tree_per_zone *mctz)
 {
         if (!mz->on_tree)
                 return;
@@ -758,13 +754,11 @@ __mem_cgroup_remove_exceeded(struct mem_cgroup *memcg,
         mz->on_tree = false;
 }
 
-static void
-mem_cgroup_remove_exceeded(struct mem_cgroup *memcg,
-                                struct mem_cgroup_per_zone *mz,
-                                struct mem_cgroup_tree_per_zone *mctz)
+static void mem_cgroup_remove_exceeded(struct mem_cgroup_per_zone *mz,
+                                       struct mem_cgroup_tree_per_zone *mctz)
 {
         spin_lock(&mctz->lock);
-        __mem_cgroup_remove_exceeded(memcg, mz, mctz);
+        __mem_cgroup_remove_exceeded(mz, mctz);
         spin_unlock(&mctz->lock);
 }
 
@@ -791,12 +785,12 @@ static void mem_cgroup_update_tree(struct mem_cgroup *memcg, struct page *page)
                         spin_lock(&mctz->lock);
                         /* if on-tree, remove it */
                         if (mz->on_tree)
-                                __mem_cgroup_remove_exceeded(memcg, mz, mctz);
+                                __mem_cgroup_remove_exceeded(mz, mctz);
                         /*
                          * Insert again. mz->usage_in_excess will be updated.
                          * If excess is 0, no tree ops.
                          */
-                        __mem_cgroup_insert_exceeded(memcg, mz, mctz, excess);
+                        __mem_cgroup_insert_exceeded(mz, mctz, excess);
                         spin_unlock(&mctz->lock);
                 }
         }
@@ -812,7 +806,7 @@ static void mem_cgroup_remove_from_trees(struct mem_cgroup *memcg)
                 for (zid = 0; zid < MAX_NR_ZONES; zid++) {
                         mz = &memcg->nodeinfo[nid]->zoneinfo[zid];
                         mctz = soft_limit_tree_node_zone(nid, zid);
-                        mem_cgroup_remove_exceeded(memcg, mz, mctz);
+                        mem_cgroup_remove_exceeded(mz, mctz);
                 }
         }
 }
@@ -835,7 +829,7 @@ retry:
          * we will to add it back at the end of reclaim to its correct
          * position in the tree.
          */
-        __mem_cgroup_remove_exceeded(mz->memcg, mz, mctz);
+        __mem_cgroup_remove_exceeded(mz, mctz);
         if (!res_counter_soft_limit_excess(&mz->memcg->res) ||
                 !css_tryget(&mz->memcg->css))
                 goto retry;
@@ -4586,7 +4580,7 @@ unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
                                         break;
                         } while (1);
                 }
-                __mem_cgroup_remove_exceeded(mz->memcg, mz, mctz);
+                __mem_cgroup_remove_exceeded(mz, mctz);
                 excess = res_counter_soft_limit_excess(&mz->memcg->res);
                 /*
                  * One school of thought says that we should not add
@@ -4597,7 +4591,7 @@ unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
                  * term TODO.
                  */
                 /* If excess == 0, no tree ops */
-                __mem_cgroup_insert_exceeded(mz->memcg, mz, mctz, excess);
+                __mem_cgroup_insert_exceeded(mz, mctz, excess);
                 spin_unlock(&mctz->lock);
                 css_put(&mz->memcg->css);
                 loop++;