[SG] Update drivers to use sg helpers

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index 80e448d..a77ab8d 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -356,7 +356,7 @@
 	int transfer_len;
 	struct scatterlist *sg = scsi_sglist(scsicmd);
 
-	buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
+	buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
 	transfer_len = min(sg->length, len + offset);
 
 	transfer_len -= offset;