Re: [PATCH] w1: Introduce a slave mutex for serializing IO.

From: Evgeniy Polyakov
Date: Thu May 03 2012 - 17:27:07 EST


On Fri, May 04, 2012 at 07:08:38AM +1000, NeilBrown (neilb@xxxxxxx) wrote:
> You can only check the owner on SMP builds, or when debugging is enabled.
> So I don't think that approach can work.

You can store owner in master device and protect with mutex itself.
On non-smp systems it can not be preempted, so can be checked without
mutex.

--
Evgeniy Polyakov
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