On Wed, 2007-04-04 at 12:22 +1000, Nick Piggin wrote: > Eric Dumazet wrote:
> > I do think such workloads might benefit from a vma_cache not shared by > > all threads but private to each thread. A sequence could invalidate the > > cache(s). > > > > ie instead of a mm->mmap_cache, having a mm->sequence, and each thread > > having a current->mmap_cache and current->mm_sequence > > I have a patchset to do exactly this, btw. /me too However, I decided against pushing it because when it does happen that a task is not involved with a vma lookup for longer than it takes the seq count to wrap we have a stale pointer... We could go and walk the tasks once in a while to reset the pointer, but it all got a tad involved. - 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/
