Re: [Qemu-devel] [PATCH V4 0/5] block: make qmp_transaction extendable

[Luiz Capitulino <lcapitulino@redhat.com>]

On Fri, 3 May 2013 13:17:59 +0200
Stefan Hajnoczi <stefanha@gmail.com> wrote:

> On Thu, May 02, 2013 at 10:26:41AM +0800, Wenchao Xia wrote:
> >   This serial will package backing chain snapshot code as one case, to make it
> > possible adding more operations later.
> > 
> > v2:
> >   Address Kevin's comments:
> >   Use the same prototype prepare, commit, rollback model in original code,
> > commit should never fail.
> > 
> > v3:
> >   Address Stefan's comments:
> >   3/5, 4/5: remove *action parameter since later only BlkTransactionStates* is
> > needed.
> >   5/5: embbed BlkTransactionStates in ExternalSnapshotStates, *opaque is
> > removed, related call back function format change for external snapshot.
> >   Address Kevin's comments:
> >   removed all indention in commit message.
> >   1/5: return void for prepare() function, *errp plays the role as error
> > checker.
> >   5/5: mark *commit callback must exist, *rollback callback can be NULL. Align
> > "callback =" in "const BdrvActionOps external_snapshot_ops" to the same colum.
> >   Address Eric's comments:
> >   1/5: better commit message.
> >   5/5: better commit message and comments in code that only one of rollback()
> > or commit() will be called.
> > 
> > v4:
> >   5/5: document clean() callback will always be called if it present, declare
> > static for global variable "actions", use array plus .instance_size to remove
> > "switch" checking code according to caller input.
> > 
> > Wenchao Xia (5):
> >   1 block: package preparation code in qmp_transaction()
> >   2 block: move input parsing code in qmp_transaction()
> >   3 block: package committing code in qmp_transaction()
> >   4 block: package rollback code in qmp_transaction()
> >   5 block: make all steps in qmp_transaction() as callback
> > 
> >  blockdev.c |  263 ++++++++++++++++++++++++++++++++++++++---------------------
> >  1 files changed, 169 insertions(+), 94 deletions(-)
> 
> Good for QEMU 1.6.
> 
> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

Looks good to me too. Are you going to apply v5 to the block branch?