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

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Message-ID: <006692da-5923-824d-d7bc-423e5cd980ef@oracle.com>
Date:   Tue, 26 Apr 2022 13:55:25 -0500
From:   John Donnelly <john.p.donnelly@...cle.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, pavel@...x.de, jonathanh@...dia.com,
        f.fainelli@...il.com, sudipm.mukherjee@...il.com,
        slade@...dewatkins.com, Waiman Long <longman@...hat.com>
Subject: Re: [PATCH 5.15 000/124] 5.15.36-rc1 review

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@...cle.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