From: Sang-Heon Jeon <ekffu200098@gmail.com>
To: Muchun Song <muchun.song@linux.dev>,
Oscar Salvador <osalvador@suse.de>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Sang-Heon Jeon <ekffu200098@gmail.com>,
David Hildenbrand <david@kernel.org>,
linux-mm@kvack.org
Subject: [PATCH 6/6] mm/hugetlb: remove unnecessary empty range check in hugetlb_bootmem_set_nodes()
Date: Sun, 21 Jun 2026 23:59:16 +0900 [thread overview]
Message-ID: <20260621145919.1453-7-ekffu200098@gmail.com> (raw)
In-Reply-To: <20260621145919.1453-1-ekffu200098@gmail.com>
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.
No functional change.
Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
---
mm/hugetlb.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 571212b80835..d4d4c9df5f51 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -4450,8 +4450,7 @@ void __init hugetlb_bootmem_set_nodes(void)
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);
+ node_set(nid, hugetlb_bootmem_nodes);
}
}
--
2.43.0
next prev parent reply other threads:[~2026-06-21 15:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-21 14:59 [PATCH 0/6] treewide: remove unnecessary invalid range checks in memblock iteration loops Sang-Heon Jeon
2026-06-21 14:59 ` Sang-Heon Jeon
2026-06-21 14:59 ` [PATCH 1/6] arm64: mm: remove unreachable invalid range check in kasan_init_shadow() Sang-Heon Jeon
2026-06-21 14:59 ` [PATCH 2/6] LoongArch: remove unreachable invalid range check in kasan_init() Sang-Heon Jeon
2026-06-21 14:59 ` [PATCH 3/6] riscv: remove unreachable invalid range check in create_linear_mapping_page_table() Sang-Heon Jeon
2026-06-22 5:10 ` Charlie Jenkins
2026-06-21 14:59 ` [PATCH 4/6] riscv: remove unreachable invalid range check in kasan_init() Sang-Heon Jeon
2026-06-22 5:11 ` Charlie Jenkins
2026-06-21 14:59 ` [PATCH 5/6] mm: remove unnecessary empty range check in early_calculate_totalpages() Sang-Heon Jeon
2026-06-21 14:59 ` Sang-Heon Jeon [this message]
2026-06-22 9:07 ` [PATCH 6/6] mm/hugetlb: remove unnecessary empty range check in hugetlb_bootmem_set_nodes() David Hildenbrand (Arm)
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