On Tue, 16 Dec 2014 08:53:08 -0600 (CST) Christoph Lameter <cl@xxxxxxxxx> wrote: > On Tue, 16 Dec 2014, Joonsoo Kim wrote: > > > > Like this: > > > > > > return d > 0 && d < page->objects * s->size; > > > > > > > Yes! That's what I'm looking for. > > Christoph, how about above change? > > Ok but now there is a multiplication in the fast path. Could we pre-calculate the value (page->objects * s->size) and e.g store it in struct kmem_cache, thus saving the imul ? -- Best regards, Jesper Dangaard Brouer MSc.CS, Sr. Network Kernel Developer at Red Hat Author of http://www.iptv-analyzer.org LinkedIn: http://www.linkedin.com/in/brouer -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>