| Date | Tue, 23 Jun 2015 18:21:46 +0200 | From | Peter Zijlstra <> | Subject | Re: [RFC][PATCH 00/13] percpu rwsem -v2 |
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On Tue, Jun 23, 2015 at 09:10:03AM -0700, Davidlohr Bueso wrote: > On Mon, 2015-06-22 at 14:16 +0200, Peter Zijlstra wrote: > > This series converts the cpu hotplug lock into a percpu-rwsem to provide a 3rd > > user. > > Curious, why not also mem hotplug? It seems to use the exact same > locking mayhem than cpu.
Because it looks like they 'forgot' to copy the notifiers and therefore I suspect we could simplify things. We might not need the recursive nonsense.
But I've not yet actually looked at it much.
I was indeed greatly saddened that these people copied cpu hotplug; clearly they had not gotten the memo that cpu hotplug is a trainwreck.
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