From: Miaohe Lin <linmiaohe@huawei.com>
To: <tj@kernel.org>, <lizefan@huawei.com>, <hannes@cmpxchg.org>,
<cgroups@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <linmiaohe@huawei.com>, <mingfangsen@huawei.com>
Subject: [PATCH] cgroup: short-circuit current_cgns_cgroup_from_root() on the default hierarchy
Date: Sun, 29 Sep 2019 16:06:58 +0800 [thread overview]
Message-ID: <20190929080658.11430-1-linmiaohe@huawei.com> (raw)
Like commit 13d82fb77abb ("cgroup: short-circuit cset_cgroup_from_root() on
the default hierarchy"), short-circuit current_cgns_cgroup_from_root() on
the default hierarchy.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
kernel/cgroup/cgroup.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 8be1da1ebd9a..b90c8b200aa2 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -1374,6 +1374,8 @@ current_cgns_cgroup_from_root(struct cgroup_root *root)
cset = current->nsproxy->cgroup_ns->root_cset;
if (cset == &init_css_set) {
res = &root->cgrp;
+ } else if (root == &cgrp_dfl_root) {
+ res = cset->dfl_cgrp;
} else {
struct cgrp_cset_link *link;
--
2.21.GIT
next reply other threads:[~2019-09-29 8:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-29 8:06 Miaohe Lin [this message]
2019-10-07 14:04 ` Tejun Heo
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