Re: [PATCH 5.15 000/124] 5.15.36-rc1 review

John Donnelly
2022-04-26T18:56:13Z

On 4/26/22 13:38, Greg Kroah-Hartman wrote:
> On Tue, Apr 26, 2022 at 12:24:24PM -0500, John Donnelly wrote:
>> On 4/26/22 12:52 PM, Greg Kroah-Hartman wrote:
>>> On Tue, Apr 26, 2022 at 12:37:21PM -0500, john.p.donnelly@oracle.com wrote:
>>>> 76723ed1fb89 2021-12-01 | locking/rwsem: Make handoff bit handling more
>>>> consistent
>>>>
>>>> In Linux 5.15.y.
>>>
>>> That commit is in 5.15.6, released December 1, 2021. And this just now
>>> shows up? How is this related to 5.15.36-rc1?
>>
>> Hi,
>>
>> This was briefly discussed in :
>>
>> Re: [PATCH v5] locking/rwsem: Make handoff bit handling more consistent
>
> Have a lore.kernel.org link? Why not continue it there?

https://lore.kernel.org/all/eae41639-cbca-4ea6-417f-f9b34a7138ea@oracle.com/

I tried and the thread is quiet.

>
>> Additional testing shows the rwsem hang still exists. It takes a 24hr fio
>> soak test to show up.
>>
>> It likely still exists in Linux 5.18.y too. We will be testing that in the
>> future as time permits.
>
> Can you test 5.17.y also as there is no 5.18.y yet :)

We did. It failed there too . ;-) We happened to have 5.18.rc2 in the
work queue
>
> thanks,
>
> greg k-h