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Re: vmpage race and deadlock

On Sun, 28 Nov 2010 09:30:44 +0100
Juergen Hannken-Illjes <> wrote:

> Usually within hours I get a deadlock where a thread is waiting on "genput"
> but the page in question is neither BUSY nor WANTED.  I suppose I tracked (*1)
> it down to three places, where we change page flags without holding the
> object lock.  With this diff (*2) in place the test runs for > 48 hours.

This is a nice find, which most probably also deserves a PR, as
netbsd-5 also lacks proper synchronization there.


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