Re: [PATCH 01/12] Use mutex instead of semaphore in driver core

Alan Stern
2008-01-02T16:06:48Z

On Wed, 2 Jan 2008, Dave Young wrote:

> > Around a month ago I had a discussion with Peter Zijlstra about the
> > problems in converting the device semaphores to mutexes; you may be
> > able to find it in the LKML archives. Doing the conversion while
> > keeping lockdep happy is a very hard problem and we were not able to
> > solve it.
> >
>
> It's unfortunate to know this, I will search and read your thread.

Here's a pointer to that thread:

http://marc.info/?t=119411942200002&r=1&w=2

Alan Stern