On Friday 16 March 2007 11:10, Peter Zijlstra wrote: > http://programming.kicks-ass.net/kernel-patches/futex-vma-cache/vma_cache.p >atch
Oh thanks > > > But if it has to walk the vmas (and take mmap_sem), you already loose the > > PRIVATE benefit. > > It doesn't take mmap_sem, I am aware of the problems. Yes but the vma_anon() -> vma_cache_find() needs to read 3 cache lines on x86_64 (sizeof(struct vma_cache) = 136) and dirty one bit, so it might be more expensive than the mmap_sem ... - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
