On 2012/10/19 8:58, Tejun Heo wrote:
> Hello, again.
>
> On Thu, Oct 18, 2012 at 05:38:35PM -0700, Tejun Heo wrote:
>> Even if there isn't an actual race, the comment is dead wrong. I'm
>> reverting the following three patches. Let's try again later.
>>
>> 7e381b0eb1 ("cgroup: Drop task_lock(parent) on cgroup_fork()")
>> 7e3aa30ac8 ("cgroup: Remove task_lock() from cgroup_post_fork()")
>
> So, after some more looking, I think the following is correct and
> doesn't need to be reverted. It's depending on threadgroup locking
> from migration path to synchronize against exit path which is always
> performed.
>
>> c84cdf75cc ("cgroup: Remove unnecessary task_lock before fetching css_set on migration")
>
> Frederic, were you trying to say that the above commit is correct?
> Li, do you agree?
>
This one does look innocent.
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