From: Chunguang Xu <brookxu@xxxxxxxxxxx> In EMQ, perhaps we should not merge the CLASS_RT queue with other class queues. Otherwise, the delay of CLASS_RT IO will increase. Signed-off-by: Chunguang Xu <brookxu@xxxxxxxxxxx> --- block/bfq-iosched.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index 9330043cdd53..bb6cc8c9ddf5 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -2623,6 +2623,9 @@ static bool bfq_may_be_close_cooperator(struct bfq_queue *bfqq, if (!bfq_bfqq_sync(bfqq) || !bfq_bfqq_sync(new_bfqq)) return false; + if (bfq_class_rt(bfqq) && !bfq_class_rt(new_bfqq)) + return false; + return true; } -- 2.30.0
