Re: [Xen-devel] [PATCH] stubdom: fix read-only disks access

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

Is no patch required for ioemu-remote?

 -- Keir

On 1/8/08 19:17, "Samuel Thibault" <samuel.thibault@xxxxxxxxxxxxx> wrote:

> 
> stubdom: fix read-only disks access
> 
> There is no need for a flush on read-only disks.  It would actually even
> error out and disturb the guest.
> 
> Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>
> 
> diff -r 3dedb6209991 tools/ioemu/block-vbd.c
> --- a/tools/ioemu/block-vbd.c Fri Aug 01 12:18:02 2008 +0100
> +++ b/tools/ioemu/block-vbd.c Fri Aug 01 19:16:52 2008 +0100
> @@ -273,6 +273,10 @@ static BlockDriverAIOCB *vbd_aio_flush(B
>      BDRVVbdState *s = bs->opaque;
>      VbdAIOCB *acb = NULL;
>  
> +    if (s->info.mode == O_RDONLY) {
> +        cb(opaque, 0);
> +        return NULL;
> +    }
>      if (s->info.barrier == 1) {
>          acb = vbd_aio_setup(bs, 0, NULL, 0,
>                  s->info.flush == 1 ? vbd_nop_cb : cb, opaque);
> 
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