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([110.9.142.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ca37a70bc0sm16250465ad.10.2026.06.30.08.04.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jun 2026 08:05:01 -0700 (PDT) From: Sang-Heon Jeon To: rppt@kernel.org, Andrew Morton Cc: linux-mm@kvack.org, Sang-Heon Jeon , linux-kernel@vger.kernel.org Subject: [PATCH v3 7/8] mm: remove unnecessary empty range check in early_calculate_totalpages() Date: Wed, 1 Jul 2026 00:04:12 +0900 Message-ID: <20260630150413.1718632-8-ekffu200098@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260630150413.1718632-1-ekffu200098@gmail.com> References: <20260630150413.1718632-1-ekffu200098@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit early_calculate_totalpages() iterates the memory ranges with for_each_mem_pfn_range() and calls node_set_state(nid, N_MEMORY) only when end_pfn - start_pfn is non-zero. for_each_mem_pfn_range() never returns an empty range, so start_pfn < end_pfn always. Therefore the check is unnecessary, so remove it. No functional change. Signed-off-by: Sang-Heon Jeon Reviewed-by: Mike Rapoport (Microsoft) --- mm/mm_init.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/mm_init.c b/mm/mm_init.c index 0f64909e8d20..17498a13eb99 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -332,8 +332,7 @@ static unsigned long __init early_calculate_totalpages(void) unsigned long pages = end_pfn - start_pfn; totalpages += pages; - if (pages) - node_set_state(nid, N_MEMORY); + node_set_state(nid, N_MEMORY); } return totalpages; } -- 2.43.0