Re: [PATCH-tip v7 11/20] locking/rwsem: Wake up almost all readers in wait queue

[Peter Zijlstra]

On Fri, May 03, 2019 at 01:15:22PM -0400, Waiman Long wrote:
> Yes, that can work. However, that will require adding one more pointer
> to the rw_semaphore structure. The performance gain with this
> optimization may not justify increasing the size of the structure by 4/8
> bytes.

Indeed; what was I thinking :-)