On Thu, 2006-03-02 at 17:09 +0000, Christoph Hellwig wrote: > For each sg list entry do something like: > > buffer = kmap_atomic(sg->page, KM_USER0) + sg->offset; > <access buffer> > kunmap_atomic(buffer - sg->offset, KM_USER0); Remember too that the data might not necessarily be valid without a flush depending on where it has come from (or where it is going). See the dma_sync_sg_for_device/cpu. James - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html