Re: [PATCH 1/2] xen/scsiback: correct frontend counting

From	Boris Ostrovsky <boris.ostrovsky@oracle.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/2] xen/scsiback: correct frontend counting
Date	2016-02-05 16:50 +0100
Message-ID	<qYQNX-29m-9@gated-at.bofh.it> (permalink)
References	<qYOsO-I2-9@gated-at.bofh.it> <qYOCu-Lw-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 02/05/2016 08:21 AM, Juergen Gross wrote:
> When adding a new frontend to xen-scsiback don't decrement the number
> of active frontends in case of no error. Not doing so results in a

I think you meant "Doing so".

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>


> failure when trying to remove the xen-pvscsi nexus even if no domain
> is using it.
>
> Signed-off-by: Juergen Gross <jgross@suse.com>
> Cc: stable@vger.kernel.org
> ---
>   drivers/xen/xen-scsiback.c | 10 +++++-----
>   1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
> index ad4eb10..51387d7 100644
> --- a/drivers/xen/xen-scsiback.c
> +++ b/drivers/xen/xen-scsiback.c
> @@ -939,12 +939,12 @@ out:
>   	spin_unlock_irqrestore(&info->v2p_lock, flags);
>   
>   out_free:
> -	mutex_lock(&tpg->tv_tpg_mutex);
> -	tpg->tv_tpg_fe_count--;
> -	mutex_unlock(&tpg->tv_tpg_mutex);
> -
> -	if (err)
> +	if (err) {
> +		mutex_lock(&tpg->tv_tpg_mutex);
> +		tpg->tv_tpg_fe_count--;
> +		mutex_unlock(&tpg->tv_tpg_mutex);
>   		kfree(new);
> +	}
>   
>   	return err;
>   }

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[PATCH 0/2] xen/scsiback: correct two issues Juergen Gross <jgross@suse.com> - 2016-02-05 14:20 +0100
  [PATCH 2/2] xen/scsiback: avoid warnings when adding multiple LUNs to a domain Juergen Gross <jgross@suse.com> - 2016-02-05 14:30 +0100
    Re: [PATCH 2/2] xen/scsiback: avoid warnings when adding multiple  LUNs to a domain Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-05 17:00 +0100
      Re: [PATCH 2/2] xen/scsiback: avoid warnings when adding multiple  LUNs to a domain Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-05 17:00 +0100
      Re: [PATCH 2/2] xen/scsiback: avoid warnings when adding multiple  LUNs to a domain Juergen Gross <jgross@suse.com> - 2016-02-05 18:10 +0100
        Re: [PATCH 2/2] xen/scsiback: avoid warnings when adding multiple  LUNs to a domain Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-05 18:30 +0100
          Re: [PATCH 2/2] xen/scsiback: avoid warnings when adding multiple  LUNs to a domain Juergen Gross <jgross@suse.com> - 2016-02-08 13:30 +0100
  [PATCH 1/2] xen/scsiback: correct frontend counting Juergen Gross <jgross@suse.com> - 2016-02-05 14:30 +0100
    Re: [PATCH 1/2] xen/scsiback: correct frontend counting Juergen Gross <jgross@suse.com> - 2016-02-05 16:50 +0100
    Re: [PATCH 1/2] xen/scsiback: correct frontend counting Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-05 16:50 +0100

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