lkml.org 
[lkml]   [2021]   [Dec]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 15/17] mm: memcontrol: fix cannot alloc the maximum memcg ID
Date
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.

Signed-off-by: Muchun Song <songmuchun@bytedance.com>
---
mm/memcontrol.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 04f75055f518..fdd0007554a0 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5013,7 +5013,7 @@ static struct mem_cgroup *mem_cgroup_alloc(void)
return ERR_PTR(error);

memcg->id.id = idr_alloc(&mem_cgroup_idr, NULL,
- MEM_CGROUP_ID_MIN, MEM_CGROUP_ID_MAX,
+ MEM_CGROUP_ID_MIN, MEM_CGROUP_ID_MAX + 1,
GFP_KERNEL);
if (memcg->id.id < 0) {
error = memcg->id.id;
--
2.11.0
\
 
 \ /
  Last update: 2021-12-13 17:57    [W:2.314 / U:0.004 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site