[PATCH] x86/mm: remove redundant computation of pmd_leaf

From: chengkaitao
Date: Mon Jan 05 2026 - 07:45:59 EST


From: Chengkaitao <chengkaitao@xxxxxxxxxx>

In the function vmemmap_check_pmd, the result of pmd_leaf(*pmd) has
already been stored in the variable large. The subsequent code can
directly use this precomputed value instead of recalculating it.

Signed-off-by: Chengkaitao <chengkaitao@xxxxxxxxxx>
---
arch/x86/mm/init_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 9983017ecbe0..e361a81f7ccb 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1551,7 +1551,7 @@ int __meminit vmemmap_check_pmd(pmd_t *pmd, int node,
{
int large = pmd_leaf(*pmd);

- if (pmd_leaf(*pmd)) {
+ if (large) {
vmemmap_verify((pte_t *)pmd, node, addr, next);
vmemmap_use_sub_pmd(addr, next);
}
--
2.50.1 (Apple Git-155)