linux-kernel - Re: [PATCH -v4 next 1/4] memcg: use OFP_PEAK

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Message-ID: <Z5Q_k4650ODFhytu@google.com>
Date: Sat, 25 Jan 2025 01:34:11 +0000
From: Roman Gushchin <roman.gushchin@...ux.dev>
To: Chen Ridong <chenridong@...weicloud.com>
Cc: akpm@...ux-foundation.org, mhocko@...nel.org, hannes@...xchg.org,
	yosryahmed@...gle.com, shakeel.butt@...ux.dev,
	muchun.song@...ux.dev, davidf@...eo.com, vbabka@...e.cz,
	mkoutny@...e.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	cgroups@...r.kernel.org, chenridong@...wei.com,
	wangweiyang2@...wei.com
Subject: Re: [PATCH -v4 next 1/4] memcg: use OFP_PEAK_UNSET instead of -1

On Fri, Jan 24, 2025 at 07:35:11AM +0000, Chen Ridong wrote:
> From: Chen Ridong <chenridong@...wei.com>
> 
> The 'OFP_PEAK_UNSET' has been defined, use it instead of '-1'.
> 
> Signed-off-by: Chen Ridong <chenridong@...wei.com>
> Reviewed-by: Michal Koutný <mkoutny@...e.com>
> Acked-by: David Finkel <davidf@...eo.com>
> Acked-by: Shakeel Butt <shakeel.butt@...ux.dev>
> Acked-by: Johannes Weiner <hannes@...xchg.org>

I think I acked it previously?

Anyway,

Acked-by: Roman Gushchin <roman.gushchin@...ux.dev>

Thanks!

> ---
>  mm/memcontrol.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 46f8b372d212..05a32c860554 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -4004,7 +4004,7 @@ static ssize_t peak_write(struct kernfs_open_file *of, char *buf, size_t nbytes,
>  			WRITE_ONCE(peer_ctx->value, usage);
>  
>  	/* initial write, register watcher */
> -	if (ofp->value == -1)
> +	if (ofp->value == OFP_PEAK_UNSET)
>  		list_add(&ofp->list, watchers);
>  
>  	WRITE_ONCE(ofp->value, usage);
> -- 
> 2.34.1
>