Re: [PATCH v6 04/46] percpu_rwlock: Implement the core design ofPer-CPU Reader-Writer Locks
From: Steven Rostedt
Date: Mon Feb 18 2013 - 11:31:37 EST
On Mon, 2013-02-18 at 21:51 +0530, Srivatsa S. Bhat wrote:
> Hi Michel,
> Yes.. I don't think we can avoid that. Moreover, since we _want_ unfair
> reader/writer semantics to allow flexible locking rules and guarantee
> deadlock-safety, having a recursive reader side is not even an issue, IMHO.
Recursive unfair reader lock may guarantee deadlock-safety, but
remember, it adds a higher probability of live-locking the write_lock.
Which is another argument to keep this separate to cpu hotplug only.
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