On Wed, 7 Jan 2009, Steven Rostedt wrote: > > What would be interesting is various benchmarks against all three. > > 1) no mutex spinning. > 2) get_task_struct() implementation. > 3) spin_or_sched implementation. One of the issues is that I cannot convince myself that (2) is even necessarily correct. At least not without having all cases happen inder the mutex spinlock - which they don't. Even with the original patch, the uncontended cases set and cleared the owner field outside the lock. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
