Hi Tejun,
On 11/19/2015 07:52 PM, Tejun Heo wrote:
> +/*
> + * There's a theoretical window where the following accessors race with
> + * updaters and return part of the previous pointer as the prioidx or
> + * classid. Such races are short-lived and the result isn't critical.
> + */
> static inline u16 sock_cgroup_prioidx(struct sock_cgroup_data *skcd)
> {
> - return skcd->prioidx;
> + return (skcd->is_data & 1) ? skcd->prioidx : 1;
> }
>
> static inline u32 sock_cgroup_classid(struct sock_cgroup_data *skcd)
> {
> - return skcd->classid;
> + return (skcd->is_data & 1) ? skcd->classid : 0;
> }
I still try to understand what the code does, hence this stupid question:
Why is sock_cgroup_prioidx() returning 1 if is not data and
sock_cgroup_classid() a 0?
thanks,
daniel
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