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Re: [Qemu-devel] [PATCH] block: mirror - insure that errp is not NULL
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH] block: mirror - insure that errp is not NULL |
Date: |
Wed, 12 Feb 2014 12:55:36 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 |
On 02/12/2014 12:46 PM, Jeff Cody wrote:
> When starting a block job, commit_active_start() relies on whether *errp
> is set by mirror_start_job. This allows it to determine if the mirror
> job start failed, so that it can clean up any changes to open flags from
> the bdrv_reopen(). If errp is NULL, then it will not be able to
> determine if mirror_start_job failed or not.
>
> Reported-by: Markus Armbruster <address@hidden>
> Signed-off-by: Jeff Cody <address@hidden>
> ---
> block/mirror.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/block/mirror.c b/block/mirror.c
> index 2a43334..41bb83c 100644
> --- a/block/mirror.c
> +++ b/block/mirror.c
> @@ -634,6 +634,8 @@ void commit_active_start(BlockDriverState *bs,
> BlockDriverState *base,
> int64_t length, base_length;
> int orig_base_flags;
>
> + assert(errp != NULL);
> +
assert(errp); is shorter, but I don't know if we have a preference for
implicit conversion of pointers to bool context.
Reviewed-by: Eric Blake <address@hidden>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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