[PATCH v3 8/8] mm/hugetlb: remove unnecessary empty range check in hugetlb_bootmem_set_nodes()

[Sang-Heon Jeon]

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 <ekffu200098@xxxxxxxxx>
Reviewed-by: David Hildenbrand (Arm) <david@xxxxxxxxxx>
---
 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