block: remove redundant mq check

elv_support_iosched() will check queue_is_mq() for us. So, remove
the redundant check to clean code.

Signed-off-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/elevator.c b/block/elevator.c
index 7d76b61..b506895 100644 (file)
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -615,7 +615,7 @@ out:
 
 static inline bool elv_support_iosched(struct request_queue *q)
 {
-       if (!q->mq_ops ||
+       if (!queue_is_mq(q) ||
            (q->tag_set && (q->tag_set->flags & BLK_MQ_F_NO_SCHED)))
                return false;
        return true;
@@ -763,7 +763,7 @@ ssize_t elv_iosched_store(struct request_queue *q, const char *name,
 {
        int ret;
 
-       if (!queue_is_mq(q) || !elv_support_iosched(q))
+       if (!elv_support_iosched(q))
                return count;
 
        ret = __elevator_change(q, name);