linux-kernel - Re: [PATCH v2] block: Use try_cmpxchg in update_io

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Message-Id: <165765840073.44296.3101525406707231315.b4-ty@kernel.dk>
Date:   Tue, 12 Jul 2022 14:40:00 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     linux-kernel@...r.kernel.org, ubizjak@...il.com,
        linux-block@...r.kernel.org
Subject: Re: [PATCH v2] block: Use try_cmpxchg in update_io_ticks

On Tue, 12 Jul 2022 17:27:41 +0200, Uros Bizjak wrote:
> Use try_cmpxchg instead of cmpxchg (*ptr, old, new) == old in
> update_io_ticks. x86 CMPXCHG instruction returns success in ZF flag,
> so this change saves a compare after cmpxchg (and related
> move instruction in front of cmpxchg).
> 
> No functional change intended.
> 
> [...]

Applied, thanks!

[1/1] block: Use try_cmpxchg in update_io_ticks
      commit: 939f9dd040fe1063d884f8f0f89b037093fe2341

Best regards,
-- 
Jens Axboe