linux-kernel - Re: [PATCH 6/7] blk-iocost: Factor out the active iocgs' state check into a separate function

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Message-ID: <X75NOaW6AYyGZSF7@mtj.duckdns.org>
Date:   Wed, 25 Nov 2020 07:25:29 -0500
From:   Tejun Heo <tj@...nel.org>
To:     Baolin Wang <baolin.wang@...ux.alibaba.com>
Cc:     axboe@...nel.dk, baolin.wang7@...il.com,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/7] blk-iocost: Factor out the active iocgs' state check
 into a separate function

Hello,

On Tue, Nov 24, 2020 at 11:33:35AM +0800, Baolin Wang wrote:
> -static void ioc_timer_fn(struct timer_list *timer)
> +/*
> + * Waiters determine the sleep durations based on the vrate they
> + * saw at the time of sleep.  If vrate has increased, some waiters
> + * could be sleeping for too long.  Wake up tardy waiters which
> + * should have woken up in the last period and expire idle iocgs.
> + */

Please reflow the comment.

...
> +	nr_debtors = ioc_check_iocg_state(ioc, &now);

How about ioc_check_iocgs()?

> +
>  	commit_weights(ioc);

I think it'd make more sense to move commit_weights() inside the new
function.

Thanks.

-- 
tejun