On Mon, May 20, 2019 at 04:59:14PM -0400, Waiman Long wrote:
> @@ -286,6 +325,7 @@ struct rwsem_waiter {
> struct task_struct *task;
> enum rwsem_waiter_type type;
> unsigned long timeout;
> + long last_rowner;
> };
> #define rwsem_first_waiter(sem) \
> list_first_entry(&sem->wait_list, struct rwsem_waiter, list)
> +static inline bool rwsem_reader_phase_trylock(struct rw_semaphore *sem,
> + long last_rowner)
> +static inline bool rwsem_reader_phase_trylock(struct rw_semaphore *sem,
> + unsigned long last_rowner)
> + waiter.last_rowner = atomic_long_read(&sem->owner);
That's somewhat inconsistent wrt the type. I'll make it unsigned long,
as that is what makes most sense, given there's a pointer inside.
