Commit 05fb22ec authored by Li Zefan's avatar Li Zefan Committed by Tejun Heo
Browse files

cgroup: remove cgrp->top_cgroup 



It's not used, and it can be retrieved via cgrp->root->top_cgroup.

Signed-off-by: default avatarLi Zefan <lizefan@huawei.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 873fe09e

include/linux/cgroup.h

+0 −1
Original line number Diff line number Diff line
@@ -204,7 +204,6 @@ struct cgroup { 
	struct cgroup_subsys_state *subsys[CGROUP_SUBSYS_COUNT];



	struct cgroupfs_root *root;

	struct cgroup *top_cgroup;



	/*

	 * List of cg_cgroup_links pointing at css_sets with

kernel/cgroup.c

+0 −2
Original line number Diff line number Diff line
@@ -1418,7 +1418,6 @@ static void init_cgroup_root(struct cgroupfs_root *root) 
	root->number_of_cgroups = 1;

	cgrp->root = root;

	cgrp->name = &root_cgroup_name;

	cgrp->top_cgroup = cgrp;

	init_cgroup_housekeeping(cgrp);

	list_add_tail(&cgrp->allcg_node, &root->allcg_list);

}
@@ -4145,7 +4144,6 @@ static long cgroup_create(struct cgroup *parent, struct dentry *dentry, 


	cgrp->parent = parent;

	cgrp->root = parent->root;

	cgrp->top_cgroup = parent->top_cgroup;



	if (notify_on_release(parent))

		set_bit(CGRP_NOTIFY_ON_RELEASE, &cgrp->flags);