commit 16b48d5d66d2fceb86114b28d693aad930f5070d
author Fam Zheng <famz@redhat.com> Wed May 03 00:35:50 2017 +0800
committer Kevin Wolf <kwolf@redhat.com> Thu May 11 11:08:40 2017 +0200
tree 8bb260acafcb9eb3eae20b4af6c886ba065abfd6
parent 2420d369a2c16867ee18fd363b617aa5a66ab933

file-posix: Add 'locking' option

Making this option available even before implementing it will let
converting tests easier: in coming patches they can specify the option
already when necessary, before we actually write code to lock the
images.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

block/file-posix.c

diff --git a/block/file-posix.c b/block/file-posix.c
index 19c48a0..d13e99c 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -392,6 +392,11 @@
             .type = QEMU_OPT_STRING,
             .help = "host AIO implementation (threads, native)",
         },
+        {
+            .name = "locking",
+            .type = QEMU_OPT_STRING,
+            .help = "file locking mode (on/off/auto, default: auto)",
+        },
         { /* end of list */ }
     },
 };