diff mbox series

cgroup: use cached local variable parent in for loop

Message ID 20230715030829.2343109-1-linmiaohe@huawei.com
State New
Headers
Series cgroup: use cached local variable parent in for loop |

Commit Message

Miaohe Lin July 15, 2023, 3:08 a.m. UTC 
  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>
---
 kernel/cgroup/cgroup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Tejun Heo July 17, 2023, 6:34 p.m. UTC | #1 
On Sat, Jul 15, 2023 at 11:08:29AM +0800, Miaohe Lin wrote:
> 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>

Applied to cgroup/for-6.6.

Thanks.
diff mbox series

Patch

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 6225d5829459..033f38fb5cef 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -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++;
 		/*