linux-kernel - [PATCH v13 04/18] mm/memcg: Remove soft_limit_tree

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Date:   Mon, 12 Jul 2021 20:45:37 +0100
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     akpm@...ux-foundation.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, cgroups@...r.kernel.org,
        Michal Hocko <mhocko@...e.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Christoph Hellwig <hch@....de>
Subject: [PATCH v13 04/18] mm/memcg: Remove soft_limit_tree_node()

Opencode this one-line function in its three callers.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
Acked-by: Michal Hocko <mhocko@...e.com>
Acked-by: Johannes Weiner <hannes@...xchg.org>
Reviewed-by: Christoph Hellwig <hch@....de>
---
 mm/memcontrol.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d57ff5c5d330..f70e33d691aa 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -451,12 +451,6 @@ ino_t page_cgroup_ino(struct page *page)
 	return ino;
 }
 
-static struct mem_cgroup_tree_per_node *
-soft_limit_tree_node(int nid)
-{
-	return soft_limit_tree.rb_tree_per_node[nid];
-}
-
 static void __mem_cgroup_insert_exceeded(struct mem_cgroup_per_node *mz,
 					 struct mem_cgroup_tree_per_node *mctz,
 					 unsigned long new_usage_in_excess)
@@ -533,7 +527,7 @@ static void mem_cgroup_update_tree(struct mem_cgroup *memcg, int nid)
 	struct mem_cgroup_per_node *mz;
 	struct mem_cgroup_tree_per_node *mctz;
 
-	mctz = soft_limit_tree_node(nid);
+	mctz = soft_limit_tree.rb_tree_per_node[nid];
 	if (!mctz)
 		return;
 	/*
@@ -572,7 +566,7 @@ static void mem_cgroup_remove_from_trees(struct mem_cgroup *memcg)
 
 	for_each_node(nid) {
 		mz = memcg->nodeinfo[nid];
-		mctz = soft_limit_tree_node(nid);
+		mctz = soft_limit_tree.rb_tree_per_node[nid];
 		if (mctz)
 			mem_cgroup_remove_exceeded(mz, mctz);
 	}
@@ -3420,7 +3414,7 @@ unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order,
 	if (order > 0)
 		return 0;
 
-	mctz = soft_limit_tree_node(pgdat->node_id);
+	mctz = soft_limit_tree.rb_tree_per_node[pgdat->node_id];
 
 	/*
 	 * Do not even bother to check the largest node if the root
-- 
2.30.2