[Qemu-trivial] [PATCH for-2.10] qemu-options: Document the -drive locking parameter.

[Richard W.M. Jones]

Commit 16b48d5d66d2 ("file-posix: Add 'locking' option") added this
option, but as it was not documented in the -help output it was not
easily possible to tell if a particular qemu binary supports it.

Signed-off-by: Richard W.M. Jones <address@hidden>
---
 qemu-options.hx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/qemu-options.hx b/qemu-options.hx
index 9f6e2adfff..f8f95eb498 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -796,7 +796,7 @@ DEF("drive", HAS_ARG, QEMU_OPTION_drive,
     "       
[,cache=writethrough|writeback|none|directsync|unsafe][,format=f]\n"
     "       [,serial=s][,addr=A][,rerror=ignore|stop|report]\n"
     "       
[,werror=ignore|stop|report|enospc][,id=name][,aio=threads|native]\n"
-    "       [,readonly=on|off][,copy-on-read=on|off]\n"
+    "       [,readonly=on|off][,copy-on-read=on|off][,locking=off|auto|on]\n"
     "       [,discard=ignore|unmap][,detect-zeroes=on|off|unmap]\n"
     "       [[,bps=b]|[[,bps_rd=r][,bps_wr=w]]]\n"
     "       [[,iops=i]|[[,iops_rd=r][,iops_wr=w]]]\n"
-- 
2.13.2