Jan Kiszka wrote:
> Patch 2 of my fast lock series actually also contained an attempt to fix
> a race I spotted in the code that atomically sets the claimed bit. I
> forgot about this fact and even, worse, I only replace the original race
> with another one.
> So here comes a new attempt to fix the issue that the lock owner and/or
> the claimed bit can change between trylock and the cmpxchg under nklock.
> Please have a look and cross-check the logic.
> The patch applies on top of vanilla SVN, so my series has to be rebased
> and the fix has to be ported to native as well - where we just found it
> in the field.

Could you explain the race ?


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