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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>
This commit is contained in:
Miaohe Lin 2023-07-15 11:08:29 +08:00 committed by Tejun Heo
parent ceddae22cd
commit fcbb485d9f
1 changed files with 1 additions and 1 deletions
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2
kernel/cgroup/cgroup.c
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@ -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++;
/*