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    SubjectRe: [PATCH-tip v3 02/14] locking/rwsem: Make owner available even if !CONFIG_RWSEM_SPIN_ON_OWNER

    * Waiman Long <longman@redhat.com> wrote:

    > > BTW, the v3 patch that I posted yesterday should work fine as long as
    > > CONFIG_RWSEM_SPIN_ON_OWNER is defined.
    > >
    > > Cheers,
    > > Longman
    > >
    > Oh, I see that the WIP.locking/core is currently merged into master. I
    > would say rwsem part1 patchset and patch 1 of part2 are stable. So I
    > would suggest merging those into the the master will be good. The rests
    > are still under review until I get an OK from Peter. If they miss the
    > next merge window and have to postpone to 5.3, I am fine with that.

    So beyond the primary constraint of PeterZ OK-ing it all, there's also
    these two scalability regression reports from the ktest bot:

    [locking/rwsem] 1b94536f2d: stress-ng.bad-altstack.ops_per_sec -32.7% regression
    [locking/rwsem] adc32e8877: will-it-scale.per_thread_ops -21.0% regression

    Thanks,

    Ingo

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