linux-kernel - [PATCH 2/4] mm/memcg: mem_cgroup_per_node is already set to 0 on allocation

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Message-Id: <20220111010302.8864-2-richard.weiyang@gmail.com>
Date:   Tue, 11 Jan 2022 01:03:00 +0000
From:   Wei Yang <richard.weiyang@...il.com>
To:     hannes@...xchg.org, mhocko@...nel.org, vdavydov.dev@...il.com,
        akpm@...ux-foundation.org, shakeelb@...gle.com, guro@...com,
        vbabka@...e.cz, willy@...radead.org, songmuchun@...edance.com,
        shy828301@...il.com, surenb@...gle.com
Cc:     linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
        linux-mm@...ck.org, Wei Yang <richard.weiyang@...il.com>
Subject: [PATCH 2/4] mm/memcg: mem_cgroup_per_node is already set to 0 on allocation

kzalloc_node() would set data to 0, so it's not necessary to set it
again.

Signed-off-by: Wei Yang <richard.weiyang@...il.com>
---
 mm/memcontrol.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 11715f7323c0..a504616f904a 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5067,8 +5067,6 @@ static int alloc_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node)
 	}
 
 	lruvec_init(&pn->lruvec);
-	pn->usage_in_excess = 0;
-	pn->on_tree = false;
 	pn->memcg = memcg;
 
 	memcg->nodeinfo[node] = pn;
-- 
2.33.1