On Wed, 13 Apr 2022, Peng Liu wrote:

Use more generic functions to deal with issues related to online
nodes. The changes will make the code simplified.

Signed-off-by: Peng Liu <liupeng256@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>

Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>

---
mm/hugetlb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 2e4d8d9fb7c6..4c529774cc08 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -6953,7 +6953,7 @@ void __init hugetlb_cma_reserve(int order)
        if (hugetlb_cma_size_in_node[nid] == 0)
            continue;

-        if (!node_state(nid, N_ONLINE)) {
+        if (!node_online(nid)) {

You could update mm/page_ext.c as well

            pr_warn("hugetlb_cma: invalid node %d specified\n", nid);
            hugetlb_cma_size -= hugetlb_cma_size_in_node[nid];
            hugetlb_cma_size_in_node[nid] = 0;
@@ -6992,7 +6992,7 @@ void __init hugetlb_cma_reserve(int order)
    }

    reserved = 0;
-    for_each_node_state(nid, N_ONLINE) {
+    for_each_online_node(nid) {

... and arch/ia64/kernel/uncached.c for this.
.

Thank you very much. I catch this.