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-rw-r--r--block/bfq-iosched.c21
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);
}
}