diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/bfq-iosched.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index 60d32700f104..12bbc6b8657d 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -725,8 +725,12 @@ static void bfq_updated_next_req(struct bfq_data *bfqd, } static void -bfq_bfqq_resume_state(struct bfq_queue *bfqq, struct bfq_io_cq *bic) +bfq_bfqq_resume_state(struct bfq_queue *bfqq, struct bfq_data *bfqd, + struct bfq_io_cq *bic, bool bfq_already_existing) { + unsigned int old_wr_coeff = bfqq->wr_coeff; + bool busy = bfq_already_existing && bfq_bfqq_busy(bfqq); + if (bic->saved_idle_window) bfq_mark_bfqq_idle_window(bfqq); else @@ -754,6 +758,14 @@ bfq_bfqq_resume_state(struct bfq_queue *bfqq, struct bfq_io_cq *bic) /* make sure weight will be updated, however we got here */ bfqq->entity.prio_changed = 1; + + if (likely(!busy)) + return; + + if (old_wr_coeff == 1 && bfqq->wr_coeff > 1) + bfqd->wr_busy_queues++; + else if (old_wr_coeff > 1 && bfqq->wr_coeff == 1) + bfqd->wr_busy_queues--; } static int bfqq_process_refs(struct bfq_queue *bfqq) @@ -4408,7 +4420,7 @@ static void bfq_prepare_request(struct request *rq, struct bio *bio) const int is_sync = rq_is_sync(rq); struct bfq_queue *bfqq; bool new_queue = false; - bool split = false; + bool bfqq_already_existing = false, split = false; if (!rq->elv.icq) return; @@ -4439,6 +4451,8 @@ static void bfq_prepare_request(struct request *rq, struct bio *bio) bfqq = bfq_get_bfqq_handle_split(bfqd, bic, bio, true, is_sync, NULL); + else + bfqq_already_existing = true; } } @@ -4464,7 +4478,8 @@ static void bfq_prepare_request(struct request *rq, struct bio *bio) * queue: restore the idle window and the * possible weight raising period. */ - bfq_bfqq_resume_state(bfqq, bic); + bfq_bfqq_resume_state(bfqq, bfqd, bic, + bfqq_already_existing); } } |