Re: [RFC] locking/rwsem: Avoid issuing wakeup before setting the reader waiter to nil

From: Peter Zijlstra
Date: Mon Jan 07 2019 - 10:31:45 EST


On Mon, Jan 07, 2019 at 09:35:09AM -0500, Waiman Long wrote:
> On 12/17/2018 08:12 AM, Yongji Xie wrote:
> > On Mon, 17 Dec 2018 at 19:37, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> >> On Mon, Dec 10, 2018 at 11:12:52PM +0800, Yongji Xie wrote:
> >>> Hi Peter,
> >>>
> >>> Please let me know If there is any progress on this issue. Thank you!
> >> Right, sorry, my brain was filled with snot and didn't want to make
> >> sense of things.
> >>
> >> I've put some patches here:
> >>
> >> git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/core
> >>
> >> Could you have a look?
> > That looks good to me. Thank you!
> >
> > Thanks,
> > Yongji
>
> Peter,
>
> Are you planning to move the patch over to tip as the merge window has
> just closed?

Sorry; yes, probably, I just got back from a 2 week holiday and am
somewhat scrambling to remember where I left off and what all landed in
my inbox.