block-commit: speed is an optional parameter

As speed is an optional parameter for the QMP block-commit command, it
should be set to 0 if not given (as it is undefined if has_speed is
false), that is, the speed should not be limited.

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 5450466394c95cea8b661fb197ed215a4ab5d700)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

diff --git a/blockdev.c b/blockdev.c
index 44755e1a5d2f298d17073d5c4b19acb844bb2793..29b44a576e801b1db426dca691fdde8141b31aef 100644 (file)
--- a/blockdev.c
+++ b/blockdev.c
@@ -1786,6 +1786,10 @@ void qmp_block_commit(const char *device,
      */
     BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT;
 
+    if (!has_speed) {
+        speed = 0;
+    }
+
     /* drain all i/o before commits */
     bdrv_drain_all();