On Thu, Oct 25, 2012 at 7:39 AM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
>
> So I think the below should work, we hold the spinlock over both rb-tree
> modification as sp free, this makes mpol_shared_policy_lookup() which
> returns the policy with an incremented refcount work with just the
> spinlock.
>
> Comments?
Looks reasonable, if annoyingly complex for something that shouldn't
be important enough for this. Oh well.
However, please check me on this: the need for this is only for
linux-next right now, correct? All the current users in my tree are ok
with just the mutex, no?
Linus
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