Il 12/03/2012 07:29, zwu.ker...@gmail.com ha scritto:
> From: Zhi Yong Wu <wu...@linux.vnet.ibm.com>
>
> Signed-off-by: Zhi Yong Wu <wu...@linux.vnet.ibm.com>
> ---
> block.c | 21 +++++++++++++++++++++
> block_int.h | 1 +
> 2 files changed, 22 insertions(+), 0 deletions(-)
>
> diff --git a/block.c b/block.c
> index 52ffe14..0825168 100644
> --- a/block.c
> +++ b/block.c
> @@ -853,6 +853,21 @@ void bdrv_close_all(void)
> }
> }
>
> +/**
> + * Complete all pending requests for a block device
> + */
> +void bdrv_drain(BlockDriverState *bs)
> +{
> + do {
> + qemu_co_queue_restart_all(&bs->throttled_reqs);
> + } while (!qemu_co_queue_empty(&bs->throttled_reqs));
> +
> + qemu_aio_flush();
This doesn't work, qemu_aio_flush can start new I/O.
Paolo
