Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/Documentation/filesystems/caching/backend-api.txt b/Documentation/filesystems/caching/backend-api.txt
index c0bd567..c418280 100644
--- a/Documentation/filesystems/caching/backend-api.txt
+++ b/Documentation/filesystems/caching/backend-api.txt
@@ -704,7 +704,7 @@
 	void fscache_get_retrieval(struct fscache_retrieval *op);
 	void fscache_put_retrieval(struct fscache_retrieval *op);
 
-     These two functions are used to retain a retrieval record whilst doing
+     These two functions are used to retain a retrieval record while doing
      asynchronous data retrieval and block allocation.