* Alex Shi <alex....@intel.com> wrote:
> Commit 5a50508 change to rwsem from mutex, that cause aim7 fork_test
> dropped 50%. Yuanhan liu does a good analysis, find it caused by
> strict sequential writing. Ingo suggest stealing sem writing from
> front task in waiting queue. https://lkml.org/lkml/2013/1/29/84
> So has this patch.
>
> In this patch, I just allow writing steal happen when the
> first waiter is also writer. Then the performance fully
> recovered.
All the aim7 fork_test performance regression is recovered?
Thanks,
Ingo
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