linux-kernel - Re: [PATCH v2] locking/qspinlock: Fix inaccessible URL of MCS lock paper

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Message-ID: <dd29ceda-cc8f-f418-9cce-1be4e33ae6f1@redhat.com>
Date:   Tue, 7 Jan 2020 12:36:36 -0500
From:   Waiman Long <longman@...hat.com>
To:     Will Deacon <will@...nel.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Will Deacon <will.deacon@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org,
        Konstantin Ryabitsev <konstantin@...uxfoundation.org>
Subject: Re: [PATCH v2] locking/qspinlock: Fix inaccessible URL of MCS lock
 paper

On 1/7/20 12:34 PM, Will Deacon wrote:
> On Tue, Jan 07, 2020 at 10:16:19AM -0500, Waiman Long wrote:
>> It turns out that the URL of the MCS lock paper listed in the source
>> code is no longer accessible. I did got question about where the paper
>> was. This patch updates the URL to BZ 206115 which contains a copy of
>> the paper from
>>
>>   https://www.cs.rochester.edu/u/scott/papers/1991_TOCS_synch.pdf
>>
>> Signed-off-by: Waiman Long <longman@...hat.com>
>> ---
>>  kernel/locking/qspinlock.c | 5 ++---
>>  1 file changed, 2 insertions(+), 3 deletions(-)
>>
>> diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c
>> index 2473f10c6956..ce75b2270b58 100644
>> --- a/kernel/locking/qspinlock.c
>> +++ b/kernel/locking/qspinlock.c
>> @@ -31,10 +31,9 @@
>>  /*
>>   * The basic principle of a queue-based spinlock can best be understood
>>   * by studying a classic queue-based spinlock implementation called the
>> - * MCS lock. The paper below provides a good description for this kind
>> - * of lock.
>> + * MCS lock. A copy of the original MCS lock papaer is available at
> s/papaer/paper/
>
> I think I reviewed the previous patch as you sent this version, but please
> could you reword as suggested here [1]?
>
> Cheers,
>
> Will
>
> [1] https://lore.kernel.org/lkml/20200107172343.GA32009@willie-the-truck/T/#m0f9eaf53e509b87d0f6378e35514c9b120d8edc2
>
Sure. I will send out v3 shortly.

Cheers,
Longman