Re: [Qemu-devel] [PATCH 0/4] blockdev: support dataplane in QMP 'transaction' command

[Stefan Hajnoczi]

On Fri, Nov 21, 2014 at 10:48:56AM +0000, Stefan Hajnoczi wrote:
> These patches make the QMP 'transaction' command work with virtio-blk
> dataplane.  Each 'transaction' action must take care to acquire AioContext
> around BlockDriverState accesses.  Once that protection is in place we can
> unblock the op blockers for these commands.
> 
> The meat is in Patch 3.
> 
> Patches 1 & 2 are minor cleanups.
> Patch 4 protects the external snapshot command (oops, we forgot!).
> 
> Stefan Hajnoczi (4):
>   blockdev: update outdated qmp_transaction() comments
>   blockdev: drop unnecessary DriveBackupState field assignment
>   blockdev: acquire AioContext in QMP 'transaction' actions
>   blockdev: check for BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT
> 
>  blockdev.c                      | 74 
> +++++++++++++++++++++++++++++++++--------
>  hw/block/dataplane/virtio-blk.c |  2 ++
>  2 files changed, 63 insertions(+), 13 deletions(-)
> 
> -- 
> 2.1.0
> 
> 

Applied to my block-next tree:
https://github.com/stefanha/qemu/commits/block-next

Stefan

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