linux-kernel - [PATCH] cgroup: remove redundant kernfs_activate in cgroup_setup

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Message-Id: <20200925091110.17189-1-richard.weiyang@linux.alibaba.com>
Date:   Fri, 25 Sep 2020 17:11:10 +0800
From:   Wei Yang <richard.weiyang@...ux.alibaba.com>
To:     tj@...nel.org, lizefan@...wei.com, hannes@...xchg.org
Cc:     cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        Wei Yang <richard.weiyang@...ux.alibaba.com>
Subject: [PATCH] cgroup: remove redundant kernfs_activate in cgroup_setup_root()

This step is already done in rebind_subsystems().

Not necessary to do it again.

Signed-off-by: Wei Yang <richard.weiyang@...ux.alibaba.com>
---
 kernel/cgroup/cgroup.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index dd247747ec14..809b13588124 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -2006,7 +2006,6 @@ int cgroup_setup_root(struct cgroup_root *root, u16 ss_mask)
 	BUG_ON(!list_empty(&root_cgrp->self.children));
 	BUG_ON(atomic_read(&root->nr_cgrps) != 1);
 
-	kernfs_activate(root_cgrp->kn);
 	ret = 0;
 	goto out;
 
-- 
2.20.1 (Apple Git-117)