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([110.9.142.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ca37a70bc0sm16250465ad.10.2026.06.30.08.05.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jun 2026 08:05:05 -0700 (PDT) From: Sang-Heon Jeon To: rppt@kernel.org, Muchun Song , Oscar Salvador , Andrew Morton Cc: linux-mm@kvack.org, Sang-Heon Jeon , David Hildenbrand , linux-kernel@vger.kernel.org Subject: [PATCH v3 8/8] mm/hugetlb: remove unnecessary empty range check in hugetlb_bootmem_set_nodes() Date: Wed, 1 Jul 2026 00:04:13 +0900 Message-ID: <20260630150413.1718632-9-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 hugetlb_bootmem_set_nodes() iterates the memory ranges with for_each_mem_pfn_range() and calls node_set(nid, hugetlb_bootmem_nodes) only when end_pfn > start_pfn. for_each_mem_pfn_range() never returns an empty range, so start_pfn < end_pfn always. Therefore the check is unnecessary, so remove it. start_pfn and end_pfn are no longer used, so remove the local variables. No functional change. Signed-off-by: Sang-Heon Jeon Reviewed-by: David Hildenbrand (Arm) --- mm/hugetlb.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 571212b80835..4f7020962486 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -4444,15 +4444,12 @@ hugetlb_early_param("default_hugepagesz", default_hugepagesz_setup); void __init hugetlb_bootmem_set_nodes(void) { int i, nid; - unsigned long start_pfn, end_pfn; if (!nodes_empty(hugetlb_bootmem_nodes)) return; - for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, &nid) { - if (end_pfn > start_pfn) - node_set(nid, hugetlb_bootmem_nodes); - } + for_each_mem_pfn_range(i, MAX_NUMNODES, NULL, NULL, &nid) + node_set(nid, hugetlb_bootmem_nodes); } void __init hugetlb_bootmem_alloc(void) -- 2.43.0