[patch]cfq-iosched: delete dead code

[Shaohua Li]

Below check is obsoleted. Currently requests in a queue are not
sync/async mixed (except oom queue, but it's rare case)

Signed-off-by: Shaohua Li <shaohua.li@xxxxxxxxx>

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 1f96ad6..a7d51c1 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -679,9 +679,6 @@ cfq_choose_req(struct cfq_data *cfqd, struct request *rq1, struct request *rq2,
 	if (rq2 == NULL)
 		return rq1;
 
-	if (rq_is_sync(rq1) != rq_is_sync(rq2))
-		return rq_is_sync(rq1) ? rq1 : rq2;
-
 	s1 = blk_rq_pos(rq1);
 	s2 = blk_rq_pos(rq2);
 


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