Re: 2.6.21-mm2: HDAPS? BUG: at kernel/mutex.c:311

Andrew Morton
2007-05-12T01:18:27Z

On Fri, 11 May 2007 17:53:35 -0700
Andrew Morton <akpm@linux-foundation.org> wrote:

> And indeed that's buggy - the non-debug version of spin_lock_mutex() is not
> irq-safe.
>
> I'd say that's pretty dumb of the mutex interface, really. Doing a
> mutex_trylock() should be OK from all contexts.

We can fix this in a low-impact fashion by making mutex_trylock() do a
spin_trylock() on mutex->wait_lock, no?