Re: Robust Futex update
From: Ingo Molnar
Date: Fri Oct 14 2005 - 00:35:51 EST
* David Singleton <dsingleton@xxxxxxxxxx> wrote:
> here 's a patch for 2.6.14-rc4-rt1 that fixes two things:
> 1) Deregister futex returns -EBUSY instead of -EINVAL if a thread
> tries to deregister a pthread_mutex that another thread has locked.
> 2) Make the fast path robust. If a pthread_mutex is only locked in
> user space we need to clear the owner when the thread dies. This
> makes both the 'rt_mutex is locked in the kernel' and the
> 'pthread_mutex is only locked in user space' paths robust.
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