linux-kernel - Re: Introduce atomic_dec_and_lock

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Message-ID: <20180504155446.GP12217@hirez.programming.kicks-ass.net>
Date:   Fri, 4 May 2018 17:54:46 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     linux-kernel@...r.kernel.org, tglx@...utronix.de,
        Ingo Molnar <mingo@...hat.com>, linux-mm@...ck.org,
        Shaohua Li <shli@...nel.org>, linux-raid@...r.kernel.org
Subject: Re: Introduce atomic_dec_and_lock_irqsave()

On Fri, May 04, 2018 at 05:45:28PM +0200, Sebastian Andrzej Siewior wrote:
> This series introduces atomic_dec_and_lock_irqsave() and converts a few
> users to use it. They were using local_irq_save() +
> atomic_dec_and_lock() before that series.

Should not all these users be converted to refcount_t, and thus, should
we not introduce refcount_dec_and_lock_irqsave() instead?