diff mbox series

mm: hugetlb_vmemmap: add check of CONFIG_MEMORY_HOTPLUG back

Message ID 20231205030530.3802-1-songmuchun@bytedance.com
State New
Headers
Series mm: hugetlb_vmemmap: add check of CONFIG_MEMORY_HOTPLUG back |

Commit Message

Muchun Song Dec. 5, 2023, 3:05 a.m. UTC 
  The compiler will optimize the code as much as possible if we add
the check of CONFIG_MEMORY_HOTPLUG back.

Signed-off-by: Muchun Song <songmuchun@bytedance.com>
---
 mm/hugetlb_vmemmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c
index eb05596662d42..be1586a114ce1 100644
--- a/mm/hugetlb_vmemmap.c
+++ b/mm/hugetlb_vmemmap.c
@@ -119,7 +119,7 @@  static int vmemmap_pmd_entry(pmd_t *pmd, unsigned long addr,
 	 *   +--+ |                        |
 	 *        +------------------------+
 	 */
-	if (unlikely(!vmemmap_walk->nr_walked)) {
+	if (IS_ENABLED(CONFIG_MEMORY_HOTPLUG) && unlikely(!vmemmap_walk->nr_walked)) {
 		struct page *page = head ? head + pte_index(addr) :
 				    pte_page(ptep_get(pte_offset_kernel(pmd, addr)));