Re: Kernel rwlock design, Multicore and IGMP

[Peter Zijlstra]

On Thu, 2010-11-11 at 21:49 +0800, Cypher Wu wrote:
> I'm using TILEPro and its rwlock in kernel is a liitle different than
> other platforms. It have a priority for write lock that when tried it
> will block the following read lock even if read lock is hold by
> others. 

That's a bug, rwlock_t must most definitely be a read preference lock,
there's tons of code depending on that.
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