From: Yu Kuai <yukuai3@huawei.com>

Because bfq_put_cooperator() is always followed by
bfq_release_process_ref().

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
---
 block/bfq-cgroup.c  | 1 -
 block/bfq-iosched.c | 6 ++----
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c
index 9fb9f3533150..e831aedb4643 100644
--- a/block/bfq-cgroup.c
+++ b/block/bfq-cgroup.c
@@ -736,7 +736,6 @@ static void bfq_sync_bfqq_move(struct bfq_data *bfqd,
 		 */
 		bfq_put_cooperator(sync_bfqq);
 		bic_set_bfqq(bic, NULL, true, act_idx);
-		bfq_release_process_ref(bfqd, sync_bfqq);
 	}
 }
 
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index f4192d5411d2..17b0bf6b56bb 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -5434,6 +5434,8 @@ void bfq_put_cooperator(struct bfq_queue *bfqq)
 		bfq_put_queue(__bfqq);
 		__bfqq = next;
 	}
+
+	bfq_release_process_ref(bfqq->bfqd, bfqq);
 }
 
 static void bfq_exit_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq)
@@ -5446,8 +5448,6 @@ static void bfq_exit_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq)
 	bfq_log_bfqq(bfqd, bfqq, "exit_bfqq: %p, %d", bfqq, bfqq->ref);
 
 	bfq_put_cooperator(bfqq);
-
-	bfq_release_process_ref(bfqd, bfqq);
 }
 
 static void bfq_exit_icq_bfqq(struct bfq_io_cq *bic, bool is_sync,
@@ -6734,8 +6734,6 @@ bfq_split_bfqq(struct bfq_io_cq *bic, struct bfq_queue *bfqq)
 	bic_set_bfqq(bic, NULL, true, bfqq->actuator_idx);
 
 	bfq_put_cooperator(bfqq);
-
-	bfq_release_process_ref(bfqq->bfqd, bfqq);
 	return NULL;
 }
 
-- 
2.39.2