Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 1b06f0b..fd59904 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -538,6 +538,7 @@
 	NFSPROC4_CLNT_OFFLOAD_CANCEL,
 
 	NFSPROC4_CLNT_LOOKUPP,
+	NFSPROC4_CLNT_LAYOUTERROR,
 };
 
 /* nfs41 types */
@@ -659,6 +660,7 @@
 	PNFS_UPDATE_LAYOUT_BLOCKED,
 	PNFS_UPDATE_LAYOUT_INVALID_OPEN,
 	PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET,
+	PNFS_UPDATE_LAYOUT_EXIT,
 };
 
 #define NFS4_OP_MAP_NUM_LONGS					\