From: Ye Liu <ye.liu@linux.dev>
To: Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>
Cc: Ye Liu <liuye@kylinos.cn>, Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Brendan Jackman <jackmanb@google.com>,
Johannes Weiner <hannes@cmpxchg.org>, Zi Yan <ziy@nvidia.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH] mm/page_alloc: Remove redundant pcp->free_count initialization in per_cpu_pages_init()
Date: Thu, 14 Aug 2025 15:18:28 +0800 [thread overview]
Message-ID: <20250814071828.12036-1-ye.liu@linux.dev> (raw)
From: Ye Liu <liuye@kylinos.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@kylinos.cn>
---
mm/page_alloc.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d1d037f97c5f..64872214bc7d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5946,7 +5946,6 @@ static void per_cpu_pages_init(struct per_cpu_pages *pcp, struct per_cpu_zonesta
pcp->high_min = BOOT_PAGESET_HIGH;
pcp->high_max = BOOT_PAGESET_HIGH;
pcp->batch = BOOT_PAGESET_BATCH;
- pcp->free_count = 0;
}
static void __zone_set_pageset_high_and_batch(struct zone *zone, unsigned long high_min,
--
2.43.0
next reply other threads:[~2025-08-14 7:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-14 7:18 Ye Liu [this message]
2025-08-14 8:40 ` [PATCH] mm/page_alloc: Remove redundant pcp->free_count initialization in per_cpu_pages_init() Brendan Jackman
2025-08-14 13:59 ` Johannes Weiner
2025-08-14 14:01 ` Zi Yan
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