qemu-img: Place the '-i aio' option in alphabetical order

The '-i AIO' option was accidentally placed after '-n' and '-t'. Move it
after '--flush-interval'.

Signed-off-by: Julia Suvorova <jusual@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20200205163008.204493-1-jusual@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

docs/interop/qemu-img.rst

@@ -247,7 +247,7 @@ Command description:
   Amends the image format specific *OPTIONS* for the image file
   *FILENAME*. Not all file formats support this operation.
 
-.. option:: bench [-c COUNT] [-d DEPTH] [-f FMT] [--flush-interval=FLUSH_INTERVAL] [-n] [-i AIO] [--no-drain] [-o OFFSET] [--pattern=PATTERN] [-q] [-s BUFFER_SIZE] [-S STEP_SIZE] [-t CACHE] [-w] [-U] FILENAME
+.. option:: bench [-c COUNT] [-d DEPTH] [-f FMT] [--flush-interval=FLUSH_INTERVAL] [-i AIO] [-n] [--no-drain] [-o OFFSET] [--pattern=PATTERN] [-q] [-s BUFFER_SIZE] [-S STEP_SIZE] [-t CACHE] [-w] [-U] FILENAME
 
   Run a simple sequential I/O benchmark on the specified image. If ``-w`` is
   specified, a write test is performed, otherwise a read test is performed.
@@ -264,13 +264,13 @@ Command description:
   ``--no-drain`` is specified, a flush is issued without draining the request
   queue first.
 
+  if ``-i`` is specified, *AIO* option can be used to specify different
+  AIO backends: ``threads``, ``native`` or ``io_uring``.
+
   If ``-n`` is specified, the native AIO backend is used if possible. On
   Linux, this option only works if ``-t none`` or ``-t directsync`` is
   specified as well.
 
-  if ``-i`` is specified, *AIO* option can be used to specify different
-  AIO backends: ``threads``, ``native`` or ``io_uring``.
-
   For write tests, by default a buffer filled with zeros is written. This can be
   overridden with a pattern byte specified by *PATTERN*.
 

qemu-img-cmds.hx

@@ -16,9 +16,9 @@ SRST
 ERST
 
 DEF("bench", img_bench,
-    "bench [-c count] [-d depth] [-f fmt] [--flush-interval=flush_interval] [-n] [--no-drain] [-o offset] [--pattern=pattern] [-q] [-s buffer_size] [-S step_size] [-t cache] [-i aio] [-w] [-U] filename")
+    "bench [-c count] [-d depth] [-f fmt] [--flush-interval=flush_interval] [-i aio] [-n] [--no-drain] [-o offset] [--pattern=pattern] [-q] [-s buffer_size] [-S step_size] [-t cache] [-w] [-U] filename")
 SRST
-.. option:: bench [-c COUNT] [-d DEPTH] [-f FMT] [--flush-interval=FLUSH_INTERVAL] [-n] [--no-drain] [-o OFFSET] [--pattern=PATTERN] [-q] [-s BUFFER_SIZE] [-S STEP_SIZE] [-t CACHE] [-i AIO] [-w] [-U] FILENAME
+.. option:: bench [-c COUNT] [-d DEPTH] [-f FMT] [--flush-interval=FLUSH_INTERVAL] [-i AIO] [-n] [--no-drain] [-o OFFSET] [--pattern=PATTERN] [-q] [-s BUFFER_SIZE] [-S STEP_SIZE] [-t CACHE] [-w] [-U] FILENAME
 ERST
 DEF("check", img_check,
     "check [--object objectdef] [--image-opts] [-q] [-f fmt] [--output=ofmt] [-r [leaks | all]] [-T src_cache] [-U] filename")