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Date:   Thu, 14 Apr 2022 11:44:33 -0400
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Subject: Re: [PATCH v5] locking/rwsem: Make handoff bit handling more
 consistent
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To:     Greg KH <gregkh@linuxfoundation.org>
Cc:     john.p.donnelly@oracle.com,
        chenguanyou <chenguanyou9338@gmail.com>, dave@stgolabs.net,
        hdanton@sina.com, linux-kernel@vger.kernel.org,
        mazhenhua@xiaomi.com, mingo@redhat.com, peterz@infradead.org,
        quic_aiquny@quicinc.com, will@kernel.org, sashal@kernel.org,
        stable@vger.kernel.org
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From:   Waiman Long <longman@redhat.com>
In-Reply-To: <YlhA1IVb/MIox/Ik@kroah.com>
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On 4/14/22 11:42, Greg KH wrote:
> On Thu, Apr 14, 2022 at 11:18:23AM -0400, Waiman Long wrote:
>> On 4/14/22 06:48, Greg KH wrote:
>>> On Tue, Apr 12, 2022 at 01:04:05PM -0400, Waiman Long wrote:
>>>> The patch has already been in the tip tree. It may not be easy to add a
>>>> Fixes tag to it. Anyway, I will encourage stable tree maintainer to take it
>>>> as it does fix a problem as shown in your test.
>>> I have no idea what you want me to do here.  Please be explicit...
>>>
>> I would like the stable trees to include commit 1ee326196c66
>> ("locking/rwsem: Always try to wake waiters in out_nolock path") after it is
>> merged into the mainline in the v5.19 merge window. It should be applied to
>> the stable trees that have incorporated the backport of commit d257cc8cb8d5
>> ("locking/rwsem: Make handoff bit handling more consistent") since this
>> commit seems to make the missed wakeup problem easier to show up.
> Please let us know when this is merged into Linus's tree.  Nothing we
> can do until then and I'm not going to remember this in a few months
> anyway.

Sure, I will remind you again after the merge happens.

Cheers,
Longman