Messages in this thread | | | Date | Fri, 25 Oct 2019 17:52:25 +0200 | From | Oleg Nesterov <> | Subject | Re: [PATCH cgroup/for-5.5] cgroup: remove cgroup_enable_task_cg_lists() optimization |
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On 10/25, Christian Brauner wrote: > > On Fri, Oct 25, 2019 at 04:13:25PM +0200, Oleg Nesterov wrote: > > Almost every usage of task->flags (load or sore) can be reported as "data race". > > > > Say, you do > > > > if (task->flags & PF_KTHREAD) > > > > while this task does > > > > current->flags |= PF_FREEZER_SKIP; > > schedule(). > > > > this is data race. > > Right, but I thought we agreed on WONTFIX in those scenarios? > The alternative is to READ_ONCE()/WRITE_ONCE() all of these.
Well, in my opinion this is WONTFIX, but I won't argue if someone adds _ONCE to all of these. Same for task->state, exit_state, and more.
Oleg.
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