linux-kernel - [PATCH v2 -next] mm: memcg: make alloc_mem_cgroup_per_node

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Message-ID: <20240507110832.1128370-1-xiujianfeng@huawei.com>
Date: Tue, 7 May 2024 11:08:32 +0000
From: Xiu Jianfeng <xiujianfeng@...wei.com>
To: <hannes@...xchg.org>, <mhocko@...nel.org>, <roman.gushchin@...ux.dev>,
	<shakeel.butt@...ux.dev>, <muchun.song@...ux.dev>,
	<akpm@...ux-foundation.org>
CC: <cgroups@...r.kernel.org>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v2 -next] mm: memcg: make alloc_mem_cgroup_per_node_info() return bool

Currently alloc_mem_cgroup_per_node_info() returns 1 if failed,
make it return bool, false for failure and true for success.

Signed-off-by: Xiu Jianfeng <xiujianfeng@...wei.com>
---
 mm/memcontrol.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d11536ef59ef..69d70feb8e68 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5653,13 +5653,13 @@ struct mem_cgroup *mem_cgroup_get_from_ino(unsigned long ino)
 }
 #endif
 
-static int alloc_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node)
+static bool alloc_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node)
 {
 	struct mem_cgroup_per_node *pn;
 
 	pn = kzalloc_node(sizeof(*pn), GFP_KERNEL, node);
 	if (!pn)
-		return 1;
+		return false;
 
 	pn->lruvec_stats = kzalloc_node(sizeof(struct lruvec_stats), GFP_KERNEL,
 					node);
@@ -5675,11 +5675,11 @@ static int alloc_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node)
 	pn->memcg = memcg;
 
 	memcg->nodeinfo[node] = pn;
-	return 0;
+	return true;
 fail:
 	kfree(pn->lruvec_stats);
 	kfree(pn);
-	return 1;
+	return false;
 }
 
 static void free_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node)
@@ -5751,7 +5751,7 @@ static struct mem_cgroup *mem_cgroup_alloc(struct mem_cgroup *parent)
 	}
 
 	for_each_node(node)
-		if (alloc_mem_cgroup_per_node_info(memcg, node))
+		if (!alloc_mem_cgroup_per_node_info(memcg, node))
 			goto fail;
 
 	if (memcg_wb_domain_init(memcg, GFP_KERNEL))
-- 
2.34.1