Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index 899360b..028fc15 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/fs/lockd/svcsubs.c
  *
@@ -179,7 +180,7 @@
 		/* update current lock count */
 		file->f_locks++;
 
-		lockhost = (struct nlm_host *) fl->fl_owner;
+		lockhost = ((struct nlm_lockowner *)fl->fl_owner)->host;
 		if (match(lockhost, host)) {
 			struct file_lock lock = *fl;