Re: [PATCH 1/7] mmu_notifier: add call_srcu and sync function for listener to delay call and sync.

[Oded Gabbay <oded.gabbay@amd.com>]

Hi Andrew,
I re-submitted the patch today with a more detailed explanation about
the problem and the proposed solution.
I would like to add that I tested this solution with iommuv2 driver and
with AMD's amdkfd driver (which we currently try to upstream).
If you could merge it for 3.17-rc1 as you said, that would be great.

	Oded

On 29/07/14 23:48, Andrew Morton wrote:
> On Tue, 29 Jul 2014 18:04:32 +0300 Oded Gabbay <oded.gabbay@amd.com> wrote:
> 
>> On 21/07/14 18:01, Oded Gabbay wrote:
>>> On 17/07/14 21:46, j.glisse@gmail.com wrote:
>>>> From: Peter Zijlstra <peterz@infradead.org>
>>>>
>>>> New mmu_notifier listener are eager to cleanup there structure after the
>>>> mmu_notifier::release callback. In order to allow this the patch provide
>>>> a function that allows to add a delayed call to the mmu_notifier srcu. It
>>>> also add a function that will call barrier_srcu so those listener can sync
>>>> with mmu_notifier.
>>>
>>> Tested with amdkfd and iommuv2 driver
>>> So,
>>> Tested-by: Oded Gabbay <oded.gabbay@amd.com>
>>
>> akpm, any chance that only this specific patch from Peter.Z will get in 3.17 ?
>> I must have it for amdkfd (HSA driver). Without it, I can't be in 3.17 either.
> 
> I can send it in for 3.17-rc1.
> 
> Can we get a better changelog please?  "eager to cleanup there
> structure after the mmu_notifier::release callback" is terribly vague
> and brief.  Fully describe the problem then describe the proposed
> solution.  Because others may be able to suggest alternative ways of
> solving that problem, but this text simply doesn't provide enough details for
> them to do so.
> 

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