From 03e565e4204c6cf8687d995de5cafd0341503b4e Mon Sep 17 00:00:00 2001 From: Paolo Valente Date: Tue, 29 Jan 2019 12:06:28 +0100 Subject: [PATCH] block, bfq: remove case of redirected bic from insert_request Before commit 18e5a57d7987 ("block, bfq: postpone rq preparation to insert or merge"), the destination queue for a request was chosen by a different hook than the one that then inserted the request. So, between the execution of the two hooks, the bic of the process generating the request could happen to be redirected to a different bfq_queue. As a consequence, the destination bfq_queue stored in the request could be wrong. Such an event does not need to ba handled any longer. Signed-off-by: Paolo Valente Signed-off-by: Jens Axboe --- block/bfq-iosched.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index b0e8006475be..a9275ed57726 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -4633,8 +4633,6 @@ static bool __bfq_insert_request(struct bfq_data *bfqd, struct request *rq) bool waiting, idle_timer_disabled = false; if (new_bfqq) { - if (bic_to_bfqq(RQ_BIC(rq), 1) != bfqq) - new_bfqq = bic_to_bfqq(RQ_BIC(rq), 1); /* * Release the request's reference to the old bfqq * and make sure one is taken to the shared queue.