Re: [Patch 0/2] sysfs: fix s_active lockdep warning

[Thomas Gleixner]

On Fri, 26 Feb 2010, Alan Stern wrote:
> On Thu, 4 Feb 2010, Thomas Gleixner wrote:
> 
> > On Thu, 4 Feb 2010, Greg KH wrote:
> > > > However in view of the other difficulties, it still doesn't seem
> > > > possible to make device mutexes work with lockdep.  I suggest removing 
> > > > Thomas's patch.
> > > 
> > > Unless Thomas or anyone else thinks of something that can solve these
> > > problems, I will do so.
> > 
> > Hmm, I have not seen those lockdep splats on -rt where we have the
> > mutex conversion for quite some time already. Need to look at it.
> 
> Thomas, did you ever figure out what was going on?  It would be nice to 
> know why the -rt kernels don't have any lockdep problems associated 
> with the device mutexes.

Yes, it just did not happen on the systems which I tested with lockdep
enabled, but I found a box where it triggered.

Sorry should have tested better. :(

Thanks,

	tglx
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