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Commit cf2c8127 authored by Johannes Weiner's avatar Johannes Weiner Committed by Linus Torvalds
Browse files

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



Signed-off-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
Acked-by: default avatarMichal Hocko <mhocko@suse.cz>
Cc: Jianyu Zhan <nasa4836@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e231875b

mm/memcontrol.c

+14 −20
Original line number Diff line number Diff line
@@ -713,9 +713,7 @@ 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,

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)

{
@@ -747,9 +745,7 @@ __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,

static void __mem_cgroup_remove_exceeded(struct mem_cgroup_per_zone *mz,

					 struct mem_cgroup_tree_per_zone *mctz)

{

	if (!mz->on_tree)
@@ -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,

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++;