Re: [Qemu-devel] [PATCH V3 01/11] qemu-img: remove unused parameter in collect_image_info()

[Luiz Capitulino <lcapitulino@redhat.com>]

On Mon, 14 Jan 2013 15:09:37 +0800
Wenchao Xia <xiawenc@linux.vnet.ibm.com> wrote:

>   Parameter *fmt was not used, so remove it.
> 
> Reviewed-by: Eric Blake <eblake@redhat.com>
> Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
> ---
>  qemu-img.c |    5 ++---
>  1 files changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/qemu-img.c b/qemu-img.c
> index 85d3740..9dab48f 100644
> --- a/qemu-img.c
> +++ b/qemu-img.c
> @@ -1186,8 +1186,7 @@ static void dump_json_image_info(ImageInfo *info)
>  
>  static void collect_image_info(BlockDriverState *bs,
>                     ImageInfo *info,
> -                   const char *filename,
> -                   const char *fmt)
> +                   const char *filename)

collect_image_info_list() doc reads:

 @fmt: topmost image format (may be NULL to autodetect)

However, right now only fmt=NULL is supported, as collect_image_info()
ignores fmt altogether.

So, if this patch is correct we better update the comment. Otherwise,
we should improve collect_image_info() to actually obey fmt != NULL.

>  {
>      uint64_t total_sectors;
>      char backing_filename[1024];
> @@ -1361,7 +1360,7 @@ static ImageInfoList *collect_image_info_list(const char *filename,
>          }
>  
>          info = g_new0(ImageInfo, 1);
> -        collect_image_info(bs, info, filename, fmt);
> +        collect_image_info(bs, info, filename);
>          collect_snapshots(bs, info);
>  
>          elem = g_new0(ImageInfoList, 1);