Re: [PATCH] cgroup: don't queue css_release_work if one already pending

From: Tadeusz Struk
Date: Fri May 20 2022 - 12:57:03 EST


On 5/20/22 09:42, Michal Koutný wrote:
On Fri, May 20, 2022 at 09:38:12AM -0700, Tadeusz Struk<tadeusz.struk@xxxxxxxxxx> wrote:
as this is a result of enqueuing the same css->destroy_work onto the same WQ,
one on the rcu path and one on the css_release path.
I will prototype it today and test with syzbot.
In my understanding, you'd need two independent work_structs in a css,
not two separate workqueues to put the single entry on.

I think either way would work, but two workqueues would be less churn.
I can try both.

--
Thanks,
Tadeusz