On Tue, Sep 03, 2019 at 08:44:40AM -0700, Linus Torvalds wrote:
> That said, it won't affect any of the core architectures much, because
> smp_store_release() isn't that expensive (it's just a compiler barrier
> on x86, it's a cheap instruction on arm64, and it should be very cheap
> on any other
On Mon, Sep 2, 2019 at 9:50 PM Eric W. Biederman wrote:
>
> I have split this work into 3 simple patches, so the code is straight
> forward to review and so that if any mistakes slip in it is easy to
> bisect them. In the process of review what it takes to remove
> task_rcu_dereference I found
On 09/02, Eric W. Biederman wrote:
>
> Oleg do you have any issues with this code?
OK, let it be refcount_t, I agree it looks more readable.
> Eric W. Biederman (3):
> task: Add a count of task rcu users
> task: RCU protect tasks on the runqueue
> task: Clean house now that
I have split this work into 3 simple patches, so the code is straight
forward to review and so that if any mistakes slip in it is easy to
bisect them. In the process of review what it takes to remove
task_rcu_dereference I found yet another user of tasks on the
runqueue in rcu context; the
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