Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c
index 458acda..c7ae74c 100644
--- a/mm/userfaultfd.c
+++ b/mm/userfaultfd.c
@@ -1,10 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  mm/userfaultfd.c
  *
  *  Copyright (C) 2015  Red Hat, Inc.
- *
- *  This work is licensed under the terms of the GNU GPL, version 2. See
- *  the COPYING file in the top-level directory.
  */
 
 #include <linux/mm.h>
@@ -271,8 +269,7 @@
 		 */
 		idx = linear_page_index(dst_vma, dst_addr);
 		mapping = dst_vma->vm_file->f_mapping;
-		hash = hugetlb_fault_mutex_hash(h, dst_mm, dst_vma, mapping,
-								idx, dst_addr);
+		hash = hugetlb_fault_mutex_hash(h, mapping, idx, dst_addr);
 		mutex_lock(&hugetlb_fault_mutex_table[hash]);
 
 		err = -ENOMEM;
@@ -543,7 +540,7 @@
 			break;
 		}
 		if (unlikely(pmd_none(dst_pmdval)) &&
-		    unlikely(__pte_alloc(dst_mm, dst_pmd, dst_addr))) {
+		    unlikely(__pte_alloc(dst_mm, dst_pmd))) {
 			err = -ENOMEM;
 			break;
 		}