On Fri, 11 Nov 2016, Peter Zijlstra wrote: > A wee bit like so... > + > +static inline bool refcount_sub_and_test(int i, refcount_t *r)
Why would we want to expose that at all? refcount_inc() and refcount_dec_and_test() is what is required for refcounting. I know there are a few users of kref_sub() in tree, but that's all undocumented voodoo, which should not be proliferated. Thanks, tglx