linux-kernel - Re: [PATCH] mm/page_alloc: Remove redundant pcp->free_count initialization in per_cpu_pages

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Message-ID: <DC20LHZMD7MQ.23X87A0C9M3TO@google.com>
Date: Thu, 14 Aug 2025 08:40:55 +0000
From: Brendan Jackman <jackmanb@...gle.com>
To: Ye Liu <ye.liu@...ux.dev>, Andrew Morton <akpm@...ux-foundation.org>, 
	Vlastimil Babka <vbabka@...e.cz>
Cc: Ye Liu <liuye@...inos.cn>, Suren Baghdasaryan <surenb@...gle.com>, 
	Michal Hocko <mhocko@...e.com>, Johannes Weiner <hannes@...xchg.org>, Zi Yan <ziy@...dia.com>, 
	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm/page_alloc: Remove redundant pcp->free_count
 initialization in per_cpu_pages_init()

On Thu Aug 14, 2025 at 7:18 AM UTC, Ye Liu wrote:
> From: Ye Liu <liuye@...inos.cn>
>
> In per_cpu_pages_init(), pcp->free_count is explicitly initialized to 0,
> but this is redundant because the entire struct is already zeroed by
> memset(pcp, 0, sizeof(*pcp)).
>
> Signed-off-by: Ye Liu <liuye@...inos.cn>

[heroically,]

Reviewed-By: Brendan Jackman <jackmanb@...gle.com>