From: Stephen H. <she...@os...> - 2003-02-06 17:24:31
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On Wed, 2003-02-05 at 17:15, John Hawkes wrote: > From: "george anzinger" <ge...@mv...> > > I can think of some cases where favouring the writer is the better > > thing (the xtime lock comes to mind). >=20 > We have had great success in converting the xtime_lock into an frlock -= - > a lockless read. We're playing with the memory barriers in > include/linux/frlock.h, though, beyond what was recently posted to > linux-kernel. Seqlock (n=C3=A9e frlock) is now in 2.5.59 bitkeeper tree. The barriers used has been through much scrutiny and review (including disasembly) but if you see anything, let me know. |