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AJvYcCXh0zUCzrNuE7cRXpXMI3fFS58pYwyggUeeOtVOouZnDF/1mj9t8IYXv55OwrfkLgwJjNWYHLHG3A==@kvack.org X-Gm-Message-State: AOJu0YyHwOdgjZHCIEVGdqcdHInVLwMW8dZ9O1VksVqA6cr9zb8qKKDb PxfIrf7DJWdZc295RoDuuz7xwDz5Zpf2BeLiTh/yZcYnJOwq9734mTICT8+KbcXDnJd6KZ3EQjG ucAj63LbwU+FXrA== X-Google-Smtp-Source: AGHT+IGBO/FVtv5Fz5TwK+7kMge1vcO6cPjAknpyeSrJy+CEUQA6/lPkatqZKsJon7bRCNXwfEJF+OhHwNl96w== X-Received: from ejcxh21.prod.google.com ([2002:a17:907:d715:b0:af9:8135:75bc]) (user=jackmanb job=prod-delivery.src-stubby-dispatcher) by 2002:a17:907:1c89:b0:af9:d863:5ce4 with SMTP id a640c23a62f3a-afcbe075846mr174843966b.15.1755160856865; Thu, 14 Aug 2025 01:40:56 -0700 (PDT) Date: Thu, 14 Aug 2025 08:40:55 +0000 In-Reply-To: <20250814071828.12036-1-ye.liu@linux.dev> Mime-Version: 1.0 References: <20250814071828.12036-1-ye.liu@linux.dev> X-Mailer: aerc 0.20.1 Message-ID: Subject: Re: [PATCH] mm/page_alloc: Remove redundant pcp->free_count initialization in per_cpu_pages_init() From: Brendan Jackman To: Ye Liu , Andrew Morton , Vlastimil Babka Cc: Ye Liu , Suren Baghdasaryan , Michal Hocko , Johannes Weiner , Zi Yan , , Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 5C5EC120014 X-Stat-Signature: 56r43kxn5pmitg54c6nsw6bb5db1bpx9 X-Rspam-User: X-HE-Tag: 1755160858-768300 X-HE-Meta: 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 IgMXn/B7 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu Aug 14, 2025 at 7:18 AM UTC, Ye Liu wrote: > From: Ye Liu > > 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 [heroically,] Reviewed-By: Brendan Jackman