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Date: Sat, 06 Nov 2004 16:18:13 +0800
From: David Xu <davidxu@freebsd.org>
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To: David Schultz <das@freebsd.org>
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Subject: Re: cvs commit: src/sys/vm vm_zeroidle.c
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David Schultz wrote:

>On Sat, Nov 06, 2004, David Xu wrote:
>[...]
>  
>
>>It is legal to call cv_signal() without a locked mutex.
>>    
>>
>
>Not according to the manpage or the comments in the code.
>What you say is true about pthreads, but pthreads is broken
>in this respect.
>
>
>  
>
I don't think it is broken, calling cv_signal with mutex locked
just introduce ping-pong problem.