tree-wide: fix assorted typos all over the place

That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/fs/cifs/README b/fs/cifs/README
index 79c1a93..a727b7c 100644
--- a/fs/cifs/README
+++ b/fs/cifs/README
@@ -423,7 +423,7 @@
 		source name to use to represent the client netbios machine 
 		name when doing the RFC1001 netbios session initialize.
   direct        Do not do inode data caching on files opened on this mount.
-		This precludes mmaping files on this mount. In some cases
+		This precludes mmapping files on this mount. In some cases
 		with fast networks and little or no caching benefits on the
 		client (e.g. when the application is doing large sequential
 		reads bigger than page size without rereading the same data)