linux-kernel - Re: [PATCH 2/3] sched/psi: Remove unused parameter nbytes of psi_trigger

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Date:   Wed, 10 Aug 2022 11:12:35 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Hao Jia <jiahao.os@...edance.com>
Cc:     mingo@...hat.com, peterz@...radead.org, mingo@...nel.org,
        juri.lelli@...hat.com, vincent.guittot@...aro.org,
        dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
        mgorman@...e.de, bristot@...hat.com, vschneid@...hat.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] sched/psi: Remove unused parameter nbytes of
 psi_trigger_create()

On Sat, Aug 06, 2022 at 08:05:09PM +0800, Hao Jia wrote:
> psi_trigger_create()'s 'nbytes' parameter is not used, so we can remove it.
> 
> Signed-off-by: Hao Jia <jiahao.os@...edance.com>

Right, it relies on \0-termination which the callers psi_write() and
kernfs_fop_write_iter() guarantee.

Acked-by: Johannes Weiner <hannes@...xchg.org>