On Mon, Sep 11, 2006 at 03:27:34PM -0700, Christoph Lameter wrote: > Optional DMA zone: Replace uses of ZONE_DMA as the first zone > > In two places in the VM we use ZONE_DMA to refer to the first zone. > If ZONE_DMA is optional then other zones may be first. So simply > replace ZONE_DMA with zone 0. > > This also fixes ZONETABLE_PGSHIFT. If we have only a single zone then > ZONES_PGSHIFT may become 0 because there is no need anymore to encode the > zone number related to a pgdat. However, we still need a zonetable to index > all the zones for each node if this is a NUMA system. Therefore define > ZONETABLE_SHIFT unconditionally as the offset of the ZONE field in page flags. ACK. This is a nice cleanup that should go in independent of what the fate of the rest of the series is. - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
|