linux-kernel - [PATCH] mm/memcg: remove definition of MEM_CGROUP_ID_MAX when !CONFIG

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Date:   Thu, 6 Jul 2023 19:28:20 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>, <hannes@...xchg.org>,
        <mhocko@...nel.org>, <roman.gushchin@...ux.dev>,
        <shakeelb@...gle.com>
CC:     <muchun.song@...ux.dev>, <cgroups@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH] mm/memcg: remove definition of MEM_CGROUP_ID_MAX when !CONFIG_MEMCG

MEM_CGROUP_ID_MAX is only used when CONFIG_MEMCG is configured. Remove
unneeded !CONFIG_MEMCG variant.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 include/linux/memcontrol.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 5818af8eca5a..634a282099bf 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -1158,7 +1158,6 @@ unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order,
 #else /* CONFIG_MEMCG */
 
 #define MEM_CGROUP_ID_SHIFT	0
-#define MEM_CGROUP_ID_MAX	0
 
 static inline struct mem_cgroup *folio_memcg(struct folio *folio)
 {
-- 
2.33.0