9p pull request for inclusion in 5.7 (take 2)

- Change read with O_NONBLOCK to allow incomplete read and return immediately
 (and document it)
 - Rest is just cleanup (indent, unused field in struct, extra semicolon)
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Merge tag '9p-for-5.7-2' of git://github.com/martinetd/linux

Pull 9p documentation update from Dominique Martinet:
 "Document the new O_NONBLOCK short read behavior"

* tag '9p-for-5.7-2' of git://github.com/martinetd/linux:
  9p: document short read behaviour with O_NONBLOCK

Documentation/filesystems/9p.rst

@@ -158,6 +158,16 @@ Options
 		/sys/fs/9p/caches. (applies only to cache=fscache)
   ============= ===============================================================
 
+Behavior
+========
+
+This section aims at describing 9p 'quirks' that can be different
+from a local filesystem behaviors.
+
+ - Setting O_NONBLOCK on a file will make client reads return as early
+   as the server returns some data instead of trying to fill the read
+   buffer with the requested amount of bytes or end of file is reached.
+
 Resources
 =========