linux-kernel - Re: [PATCH] mm/damon/reclaim: Use resource

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Date:   Sat,  7 May 2022 15:38:33 +0000
From:   SeongJae Park <sj@...nel.org>
To:     Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Cc:     sj@...nel.org, akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Abaci Robot <abaci@...ux.alibaba.com>, damon@...ts.linux.dev
Subject: Re: [PATCH] mm/damon/reclaim: Use resource_size function on resource object

Hi Jiapeng,


Thank you for this patch!

On Sat, 7 May 2022 11:25:12 +0800 Jiapeng Chong <jiapeng.chong@...ux.alibaba.com> wrote:

> Fix the following coccicheck warnings:
> 
> ./mm/damon/reclaim.c:241:30-33: WARNING: Suspicious code. resource_size
> is maybe missing with res.

Nit.  I'd prefer having this kind of program outputs in commit message be
indented and not broken, like below:

    ./mm/damon/reclaim.c:241:30-33: WARNING: Suspicious code. resource_size is maybe missing with res.

> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>

Other than the nit,

Reviewed-by: SeongJae Park <sj@...nel.org>


Thanks,
SJ

> ---
>  mm/damon/reclaim.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c
> index f37c5d4b27fa..8efbfb24f3a1 100644
> --- a/mm/damon/reclaim.c
> +++ b/mm/damon/reclaim.c
> @@ -238,7 +238,7 @@ static int walk_system_ram(struct resource *res, void *arg)
>  {
>  	struct damon_reclaim_ram_walk_arg *a = arg;
>  
> -	if (a->end - a->start < res->end - res->start) {
> +	if (a->end - a->start < resource_size(res)) {
>  		a->start = res->start;
>  		a->end = res->end;
>  	}
> -- 
> 2.20.1.7.g153144c