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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1755162064; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=GvViAVeacLDX8WWUbGDCX8LCi1iC8wegTPXSZtNYfrE=; b=BdfHpxoOCdyja8JdJtxD32B+sd/Mck3Bz2yfO8RL9lPcby7An7OoztfDK5zfZ7YR+vwVsX Q4SQwoHRM7UpXVgPkERTWfIoHCRXBR7svCzoYvwm+Y5ezt8Uq4LXkpXH3opW6EOeb29TP4 7aEyXx+m4cI+84AtSejfsJ6kMjZDR0A= From: Ye Liu To: Andrew Morton , Vlastimil Babka Cc: Ye Liu , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH] mm/page_alloc: simplify lowmem_reserve max calculation Date: Thu, 14 Aug 2025 17:00:52 +0800 Message-ID: <20250814090053.22241-1-ye.liu@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 7F259180003 X-Stat-Signature: hntdrk4xw51ya1558yrf7qpzk31uw546 X-Rspam-User: X-HE-Tag: 1755162066-384869 X-HE-Meta: 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 V7bOcM2n 7PdFpST1vw42Qyv/lb+71Pt3ME636/vn5eCJCRswlDioAHpsBaqrqqZJmVJL4W7fS5bQk5jqkApFbyw4X0XJGn9TF0zCLMDpbk/F/WqBsQT+iVsDnfnHx1SQx5mZi+AQEQvtlIY09+vf0oCK7kQXT6PiSDYKO0QjIZdn90gvh0qIfHxHFNoWqmVbRFfatubqXY0iUPXF/MDMLFmtK4HXhFJGFZ1v/tq7xZOwEdIjMDxaGymrz2tGMBUFhYw== 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: From: Ye Liu Use max() macro to simplify the calculation of maximum lowmem_reserve value in calculate_totalreserve_pages(), instead of open-coding the comparison. The functionality remains identical. Signed-off-by: Ye Liu --- mm/page_alloc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 64872214bc7d..8a55a4951d19 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6236,8 +6236,7 @@ static void calculate_totalreserve_pages(void) /* Find valid and maximum lowmem_reserve in the zone */ for (j = i; j < MAX_NR_ZONES; j++) { - if (zone->lowmem_reserve[j] > max) - max = zone->lowmem_reserve[j]; + max = max(max, zone->lowmem_reserve[j]); } /* we treat the high watermark as reserved pages. */ -- 2.43.0