* John Baldwin <[EMAIL PROTECTED]> [001212 08:39] wrote:
>
> On 12-Dec-00 Alfred Perlstein wrote:
> > grr...
> >
> > considering this:
> >
> >#define MEXT_IS_REF(m) ((m)->m_ext.ref_cnt->refcnt > 1)
> >
> >#define MEXT_REM_REF(m) do { \
> > KASSERT((m)->m_ext.ref_cnt->refcnt > 0, ("m_ext refcnt < 0")); \
> > atomic_subtract_long(&((m)->m_ext.ref_cnt->refcnt), 1); \
> > } while(0)
> >
> > this:
> >
> >#define MEXTFREE(m) do { \
> > struct mbuf *_mmm = (m); \
> > \
> > if (MEXT_IS_REF(_mmm)) \
> > MEXT_REM_REF(_mmm); \
> >
> >
> > is not mpsafe. we _NEED_ some type that allows atomic dec and test
> > for 0.
>
> http://www.FreeBSD.org/~jhb/patches/refcount.patch
You do have a commit bit if I'm not mistaken. :)
--
-Alfred Perlstein - [[EMAIL PROTECTED]|[EMAIL PROTECTED]]
"I have the heart of a child; I keep it in a jar on my desk."
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