> YAMAMOTO Takashi wrote:
> >>> i meant, nothing except kernel_lock prevents the state changed before
> >>> you examine the return value of the function.
> >>> of course, whether it can actually be a problem or not depends
> >>> on its usage.  hence my question above.
> >> I thought it might be useful. since I have no intention on discussing
> >> it, I will just revert it if you care that much.
> > 
> > you said we would use it soon, didn't you?
> > 
> > i'm not requesting you back it out.
> > if you have a good use of it, for which the race is not a problem, it's fine.
> 
> no, not anymore; right now I don't have a use for it.
> 
> -e.
> 
> -- 
> Elad Efrat

then let's wrap it with "#if 0 /* notused */".

YAMAMOTO Takashi