Re: [Qemu-devel] [PATCH 2/5] Introduce new helper function qcow_shedule_bh().

[Anthony Liguori <anthony@codemonkey.ws>]

Gleb Natapov wrote:
> Use it to remove code duplications from qcow_aio_read_cb().
>
> Signed-off-by: Gleb Natapov <gleb@redhat.com>
> ---
>
>  block-qcow2.c |   44 +++++++++++++++++---------------------------
>  1 files changed, 17 insertions(+), 27 deletions(-)
>
> diff --git a/block-qcow2.c b/block-qcow2.c
> index ab19a4e..69f6414 100644
> --- a/block-qcow2.c
> +++ b/block-qcow2.c
> @@ -1177,6 +1177,20 @@ static void qcow_aio_read_bh(void *opaque)
>      qcow_aio_read_cb(opaque, 0);
>  }
>  
> +static int qcow_shedule_bh(QEMUBHFunc *cb, QCowAIOCB *acb)
> +{
> +    if (acb->bh)
> +        return -EIO;
> +
> +    acb->bh = qemu_bh_new(cb, acb);
> +    if (!acb->bh)
> +        return -EIO;
> +
> +    qemu_bh_schedule(acb->bh);
> +
> +    return 0;
> +}
> +
>  static void qcow_aio_read_cb(void *opaque, int ret)
>  {
>      QCowAIOCB *acb = opaque;
> @@ -1232,30 +1246,14 @@ fail:
>                  if (acb->hd_aiocb == NULL)
>                      goto fail;
>              } else {
> -                if (acb->bh) {
> -                    ret = -EIO;
> -                    goto fail;
> -                }
> -                acb->bh = qemu_bh_new(qcow_aio_read_bh, acb);
> -                if (!acb->bh) {
> -                    ret = -EIO;
> +                if((ret = qcow_shedule_bh(qcow_aio_read_bh, acb)) < 0)
>   

Please do this on two lines and watch the whitespace damage.  Also, you 
have a consistent typo in "schedule".

Regards,

Anthony Liguori