2844 	if (!pmd_same(pmdval, vmf->orig_pmd)) {  in __pte_map_lock()
4797 		if (userfaultfd_huge_pmd_wp(vmf->vma, vmf->orig_pmd))  in wp_huge_pmd()
4988 		vmf.orig_pmd = READ_ONCE(*vmf.pmd);  in __handle_mm_fault()
5000 		if (unlikely(pmd_none(vmf.orig_pmd) ||  in __handle_mm_fault()
5001 			     is_swap_pmd(vmf.orig_pmd) ||  in __handle_mm_fault()
5002 			     pmd_trans_huge(vmf.orig_pmd) ||  in __handle_mm_fault()
5003 			     pmd_devmap(vmf.orig_pmd))) {  in __handle_mm_fault()
5019 		if (pmd_val(READ_ONCE(*vmf.pmd)) != pmd_val(vmf.orig_pmd)) {  in __handle_mm_fault()
5094 		vmf.orig_pmd = *vmf.pmd;  in __handle_mm_fault()
5097 		if (unlikely(is_swap_pmd(vmf.orig_pmd))) {  in __handle_mm_fault()
5099 					  !is_pmd_migration_entry(vmf.orig_pmd));  in __handle_mm_fault()
5100 			if (is_pmd_migration_entry(vmf.orig_pmd))  in __handle_mm_fault()
5104 		if (pmd_trans_huge(vmf.orig_pmd) || pmd_devmap(vmf.orig_pmd)) {  in __handle_mm_fault()
5105 			if (pmd_protnone(vmf.orig_pmd) && vma_is_accessible(vma))  in __handle_mm_fault()
5108 			if (dirty && !pmd_write(vmf.orig_pmd)) {  in __handle_mm_fault()