Commit fcbb485d authored Jul 15, 2023 by Miaohe Lin Committed by Tejun Heo Jul 17, 2023

cgroup: use cached local variable parent in for loop



Use local variable parent to initialize iter tcgrp in for loop so the size
of cgroup.o can be reduced by 64 bytes. No functional change intended.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

parent ceddae22

kernel/cgroup/cgroup.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -5894,7 +5894,7 @@ static int cgroup_destroy_locked(struct cgroup *cgrp)
		parent->nr_threaded_children--;

		spin_lock_irq(&css_set_lock);
		for (tcgrp = cgroup_parent(cgrp); tcgrp; tcgrp = cgroup_parent(tcgrp)) {
		for (tcgrp = parent; tcgrp; tcgrp = cgroup_parent(tcgrp)) {
		tcgrp->nr_descendants--;
		tcgrp->nr_dying_descendants++;
		/*