linux-kernel - Re: [PATCH v2 3/4] mm: call __wb_calc_thresh instead of wb_calc_thresh in wb_over_bg

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Date: Fri, 3 May 2024 11:31:16 +0200
From: Jan Kara <jack@...e.cz>
To: Kemeng Shi <shikemeng@...weicloud.com>
Cc: willy@...radead.org, akpm@...ux-foundation.org, tj@...nel.org,
	jack@...e.cz, hcochran@...nelspring.com, axboe@...nel.dk,
	mszeredi@...hat.com, linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/4] mm: call __wb_calc_thresh instead of
 wb_calc_thresh in wb_over_bg_thresh

On Thu 25-04-24 21:17:23, Kemeng Shi wrote:
> Call __wb_calc_thresh to calculate wb bg_thresh of gdtc in
> wb_over_bg_thresh to remove unnecessary wrap in wb_calc_thresh.
> 
> Signed-off-by: Kemeng Shi <shikemeng@...weicloud.com>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  mm/page-writeback.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/page-writeback.c b/mm/page-writeback.c
> index 14893b20d38c..22e1acec899e 100644
> --- a/mm/page-writeback.c
> +++ b/mm/page-writeback.c
> @@ -2117,7 +2117,7 @@ bool wb_over_bg_thresh(struct bdi_writeback *wb)
>  	if (gdtc->dirty > gdtc->bg_thresh)
>  		return true;
>  
> -	thresh = wb_calc_thresh(gdtc->wb, gdtc->bg_thresh);
> +	thresh = __wb_calc_thresh(gdtc, gdtc->bg_thresh);
>  	if (thresh < 2 * wb_stat_error())
>  		reclaimable = wb_stat_sum(wb, WB_RECLAIMABLE);
>  	else
> -- 
> 2.30.0
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR