[sheepdog] [PATCH 2/2] fix array index error in function add_new_participant

[Hitoshi Mitake]

At Mon, 11 Aug 2014 18:11:44 +0800,
Ruoyu wrote:
> 
> Nothing wrong with fixing it, alhough I don't know exactly
> what will be happened if not patching it.
> 
> Signed-off-by: Ruoyu <liangry at ucweb.com>
> ---
>  sheep/vdi.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/sheep/vdi.c b/sheep/vdi.c
> index 05cae7b..77dc253 100644
> --- a/sheep/vdi.c
> +++ b/sheep/vdi.c
> @@ -372,11 +372,12 @@ static bool add_new_participant(struct vdi_state_entry *entry,
>  		return true;
>  	}
>  
> -	idx = entry->nr_participants++;
> +	idx = entry->nr_participants;
>  	memcpy(&entry->participants[idx], owner, sizeof(*owner));
>  	entry->participants_state[idx] =
>  		is_modified(entry) ?
>  		SHARED_LOCK_STATE_INVALIDATED : SHARED_LOCK_STATE_SHARED;
> +	entry->nr_participants++;

I think this patch doesn't change the function. Does this fixes a bug?

Thanks,
Hitoshi