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cgroup: use cached local variable parent in for loop

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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++;
/*