Re: [Xen-devel] Xen blktap driver for Ceph RBD : Anybody wants to test ? :p

[James Harper <james.harper@xxxxxxxxxxxxxxxx>]

> Here's an (untested yet) patch in the rbd error path:
> 
> diff --git a/drivers/block-rbd.c b/drivers/block-rbd.c
> index 68fbed7..ab2d2c5 100644
> --- a/drivers/block-rbd.c
> +++ b/drivers/block-rbd.c
> @@ -560,6 +560,9 @@ err:
>         if (c)
>                 rbd_aio_release(c);
> 
> +       list_move(&req->queue, &prv->reqs_free);
> +       prv->reqs_free_count++;
> +
>         return rv;
>  }
> 

FWIW, I can confirm via printf's that this error path is never hit in at least 
some of the crashes I'm seeing.

James

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