Messages in this thread |  | | Date | Sun, 22 Jan 2023 22:40:22 -0500 | Subject | Re: [PATCH v6 0/6] lockinig/rwsem: Fix rwsem bugs & enable true lock handoff | From | Waiman Long <> |
| |
On 1/22/23 08:46, Peter Zijlstra wrote: > On Thu, Nov 17, 2022 at 09:20:10PM -0500, Waiman Long wrote: > >> Waiman Long (6): >> locking/rwsem: Prevent non-first waiter from spinning in down_write() slowpath >> locking/rwsem: Disable preemption at all down_read*() and up_read() code paths >> locking/rwsem: Disable preemption at all down_write*() and up_write() code paths >> locking/rwsem: Change waiter->hanodff_set to a handoff_state enum > After all these we still have down_read_non_owner() using > __rwsem_set_reader_owner() outside of the preempt_disable() region. > > Now, let me go stare at this one:
Thanks for spotting that. I kind of overlook the fact we have a down_read_non_owner(). Will update that as well.
Cheers, Longman
>> locking/rwsem: Enable direct rwsem lock handoff >
|  |