[Qemu-devel] [PATCH v2] qmp-commands.hx: Update the supported 'transaction' operations

[Kashyap Chamarthy <kchamart@redhat.com>]

Although the canonical source of reference for QMP commands is
qapi-schema.json, for consistency's sake, update qmp-commands.hx to
state the list of supported transactionable operations, namely:

    drive-backup
    blockdev-backup
    blockdev-snapshot-internal-sync
    abort
    block-dirty-bitmap-add
    block-dirty-bitmap-clear

NB: The 'block-dirty-bitmap-add' and 'block-dirty-bitmap-clear' commands
will be available once the in-review "transactionless incremental
backup" patch series[1] is merged upstream.

[1] http://lists.nongnu.org/archive/html/qemu-devel/2015-04/msg02161.html

Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
>From v1 -> v2:

  - Update the "NB" part of the commit message by removing the duplicate
    command entry and add the missing one ('block-dirty-bitmap-clear')
  - Fix grammer per Eric Blake's review: s/refer/refer to the
---
 qmp-commands.hx | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/qmp-commands.hx b/qmp-commands.hx
index 3a42ad0bffeb23778f877410f6e2038943da46c0..b7fe31ca37afe0f4ae8f4b6f7be5d379b361b1b8 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -1200,11 +1200,14 @@ SQMP
 transaction
 -----------
 
-Atomically operate on one or more block devices.  The only supported operations
-for now are drive-backup, internal and external snapshotting.  A list of
-dictionaries is accepted, that contains the actions to be performed.
-If there is any failure performing any of the operations, all operations
-for the group are abandoned.
+Atomically operate on one or more block devices.  Operations that are
+currently supported: drive-backup, blockdev-backup,
+blockdev-snapshot-sync, blockdev-snapshot-internal-sync, abort,
+block-dirty-bitmap-add, block-dirty-bitmap-clear (refer to the
+qemu/qapi-schema.json file for minimum required QEMU versions for these
+operations).  A list of dictionaries is accepted, that contains the
+actions to be performed.  If there is any failure performing any of the
+operations, all operations for the group are abandoned.
 
 For external snapshots, the dictionary contains the device, the file to use for
 the new snapshot, and the format.  The default format, if not specified, is
-- 
2.1.0