cgroup: trivial cleanup for cgroup_init/load_subsys()

Consistently use @css and @dummytop in these two functions instead of
referring to them indirectly.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 82ad878..6cc693b 100644 (file)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -4332,7 +4332,7 @@ static void __init cgroup_init_subsys(struct cgroup_subsys *ss)
         * pointer to this state - since the subsystem is
         * newly registered, all tasks and hence the
         * init_css_set is in the subsystem's top cgroup. */
-       init_css_set.subsys[ss->subsys_id] = dummytop->subsys[ss->subsys_id];
+       init_css_set.subsys[ss->subsys_id] = css;
 
        need_forkexit_callback |= ss->fork || ss->exit;
 
@@ -4344,7 +4344,7 @@ static void __init cgroup_init_subsys(struct cgroup_subsys *ss)
        ss->active = 1;
 
        if (ss->post_create)
-               ss->post_create(&ss->root->top_cgroup);
+               ss->post_create(dummytop);
 
        /* this function shouldn't be used with modular subsystems, since they
         * need to register a subsys_id, among other things */
@@ -4456,7 +4456,7 @@ int __init_or_module cgroup_load_subsys(struct cgroup_subsys *ss)
        ss->active = 1;
 
        if (ss->post_create)
-               ss->post_create(&ss->root->top_cgroup);
+               ss->post_create(dummytop);
 
        /* success! */
        mutex_unlock(&cgroup_mutex);