Re: [Xen-devel] [PATCHv11 2/4] gnttab: introduce maptrack lock

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 02.06.15 at 18:26, <david.vrabel@xxxxxxxxxx> wrote:
> --- a/xen/common/grant_table.c
> +++ b/xen/common/grant_table.c
> @@ -288,10 +288,10 @@ static inline void put_maptrack_handle(
>      struct grant_table *t, int handle)
>  {
> -    spin_lock(&t->lock);
> +    spin_lock(&t->maptrack_lock);
>      maptrack_entry(t, handle).ref = t->maptrack_head;
>      t->maptrack_head = handle;
> -    spin_unlock(&t->lock);
> +    spin_unlock(&t->maptrack_lock);

Starting with this change it becomes unclear what protects the
maptrack entries - the grant table lock or the maptrack one?

Jan


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