In vma_migratable(), we do strictly check with hugetlb mapping:
	hugepage_migration_supported()

When vma_migratable() returns true, it means the hugetlb mapping
passes the hugepage_migration_supported(). So we should not
skip this hugetlb mapping.

Remove the wrong is_vm_hugetlb_page() check in task_numa_work().

Signed-off-by: Huang Shijie <huangsj@hygon.cn>
---
 kernel/sched/fair.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index d78467ec6ee1..0582e0cfba36 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4167,7 +4167,7 @@ static void task_numa_work(struct callback_head *work)
 
 	for (; vma; vma = vma_next(&vmi)) {
 		if (!vma_migratable(vma) || !vma_policy_mof(vma) ||
-			is_vm_hugetlb_page(vma) || (vma->vm_flags & VM_MIXEDMAP)) {
+			(vma->vm_flags & VM_MIXEDMAP)) {
 			trace_sched_skip_vma_numa(mm, vma, NUMAB_SKIP_UNSUITABLE);
 			continue;
 		}
-- 
2.53.0

On Thu, Jul 23, 2026 at 03:34:49PM +0800, Huang Shijie wrote:
> +++ b/kernel/sched/fair.c
> @@ -4167,7 +4167,7 @@ static void task_numa_work(struct callback_head *work)
>  
>  	for (; vma; vma = vma_next(&vmi)) {
>  		if (!vma_migratable(vma) || !vma_policy_mof(vma) ||
> -			is_vm_hugetlb_page(vma) || (vma->vm_flags & VM_MIXEDMAP)) {
> +			(vma->vm_flags & VM_MIXEDMAP)) {
>  			trace_sched_skip_vma_numa(mm, vma, NUMAB_SKIP_UNSUITABLE);
>  			continue;
>  		}
> -- 
> 2.53.0
> 
Please ignore this patch. The code disables the hugetlb migration on purpose.

Thanks
Huang Shijie