[merged] mm-memcontrol-fix-cannot-alloc-the-maximum-memcg-id.patch removed from -mm tree

[merged] mm-memcontrol-fix-cannot-alloc-the-maximum-memcg-id.patch removed from -mm tree

[Andrew Morton]

The patch titled
     Subject: mm: memcontrol: fix cannot alloc the maximum memcg ID
has been removed from the -mm tree.  Its filename was
     mm-memcontrol-fix-cannot-alloc-the-maximum-memcg-id.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Muchun Song <songmuchun@bytedance.com>
Subject: mm: memcontrol: fix cannot alloc the maximum memcg ID

The idr_alloc() does not include @max ID.  So in the current
implementation, the maximum memcg ID is 65534 instead of 65535.  It seems
a bug.  So fix this.

Link: https://lkml.kernel.org/r/20220228122126.37293-15-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Anna Schumaker <Anna.Schumaker@Netapp.com>
Cc: Chao Yu <chao@kernel.org>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Fam Zheng <fam.zheng@bytedance.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kari Argillander <kari.argillander@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memcontrol.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/mm/memcontrol.c~mm-memcontrol-fix-cannot-alloc-the-maximum-memcg-id
+++ a/mm/memcontrol.c
@@ -5088,8 +5088,7 @@ static struct mem_cgroup *mem_cgroup_all
 		return ERR_PTR(error);
 
 	memcg->id.id = idr_alloc(&mem_cgroup_idr, NULL,
-				 1, MEM_CGROUP_ID_MAX,
-				 GFP_KERNEL);
+				 1, MEM_CGROUP_ID_MAX + 1, GFP_KERNEL);
 	if (memcg->id.id < 0) {
 		error = memcg->id.id;
 		goto fail;
_

Patches currently in -mm which might be from songmuchun@bytedance.com are