From: Wei Yang <richard.weiyang@gmail.com>
To: akpm@linux-foundation.org
Cc: cgroups@vger.kernel.org, linux-mm@kvack.org,
Wei Yang <richard.weiyang@gmail.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
Johannes Weiner <hannes@cmpxchg.org>
Subject: [PATCH] mm/memcg: non-hierarchical mode is deprecated
Date: Sun, 3 Apr 2022 02:08:33 +0000 [thread overview]
Message-ID: <20220403020833.26164-1-richard.weiyang@gmail.com> (raw)
After commit bef8620cd8e0 ("mm: memcg: deprecate the non-hierarchical
mode"), we won't have a NULL parent except root_mem_cgroup. And this
case is handled when (memcg == root).
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
CC: Roman Gushchin <roman.gushchin@linux.dev>
CC: Johannes Weiner <hannes@cmpxchg.org>
---
mm/memcontrol.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 2cd8bfdec379..3ceb9b8592b1 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -6587,9 +6587,6 @@ void mem_cgroup_calculate_protection(struct mem_cgroup *root,
return;
parent = parent_mem_cgroup(memcg);
- /* No parent means a non-hierarchical mode on v1 memcg */
- if (!parent)
- return;
if (parent == root) {
memcg->memory.emin = READ_ONCE(memcg->memory.min);
--
2.33.1
next reply other threads:[~2022-04-03 2:09 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-03 2:08 Wei Yang [this message]
2022-04-04 9:27 ` Michal Hocko
2022-04-05 2:22 ` Wei Yang
2022-04-05 6:26 ` Michal Hocko
2022-04-05 8:05 ` Wei Yang
2022-04-04 19:11 ` Roman Gushchin
2022-04-05 18:20 ` Shakeel Butt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220403020833.26164-1-richard.weiyang@gmail.com \
--to=richard.weiyang@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=cgroups@vger.kernel.org \
--cc=hannes@cmpxchg.org \
--cc=linux-mm@kvack.org \
--cc=roman.gushchin@linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox