linux-kernel - Re: [PATCH] percpu_rwsem: fix missed wakeup due to reordering of load

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Date:   Wed, 12 Dec 2018 07:31:55 -0800
From:   Davidlohr Bueso <dbueso@...e.de>
To:     Prateek Sood <prsood@...eaurora.org>
Cc:     peterz@...radead.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org, sramana@...eaurora.org
Subject: Re: [PATCH] percpu_rwsem: fix missed wakeup due to reordering of load

On 2018-12-12 06:26, Prateek Sood wrote:
> Please confirm if the suspicion of smp_rmb is correct.
> IMO, it should be smp_mb() translating to dmb ish.

Feel free to add my ack. This should also be Cc to stable as of v4.11.

Fixes: 8f95c90ceb54 (sched/wait, RCU: Introduce rcuwait machinery)

Thanks,
Davidlohr