cfq-iosched: use rw_is_sync() to see if rw flags are sync or not

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index a4809de..f36f8b4 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -2062,7 +2062,7 @@
 	if (!cic)
 		return ELV_MQUEUE_MAY;
 
-	cfqq = cic_to_cfqq(cic, rw & REQ_RW_SYNC);
+	cfqq = cic_to_cfqq(cic, rw_is_sync(rw));
 	if (cfqq) {
 		cfq_init_prio_data(cfqq, cic->ioc);
 		cfq_prio_boost(cfqq);