[PATCH 6/9] blk-mq: rename blk_mq_freeze_queue_wait as blk_freeze_queue_wait

[Ming Lei]

The only change on legacy is that blk_drain_queue() is run
from blk_freeze_queue(), which is called in blk_cleanup_queue().

So this patch removes the explicite __blk_drain_queue() in
blk_cleanup_queue().

Signed-off-by: Ming Lei <ming....@redhat.com>
---
 block/blk-core.c         | 2 --
 block/blk-mq.c           | 8 +++++---
 drivers/nvme/host/core.c | 2 +-
 include/linux/blk-mq.h   | 2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index 636452f151ea..7a9f93889669 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -669,8 +669,6 @@ void blk_cleanup_queue(struct request_queue *q)
         */
        blk_freeze_queue(q);
        spin_lock_irq(lock);
-       if (!q->mq_ops)
-               __blk_drain_queue(q, true);
        queue_flag_set(QUEUE_FLAG_DEAD, q);
        spin_unlock_irq(lock);
 
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 4c532d8612e1..24de78afbe9a 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -131,11 +131,13 @@ void blk_freeze_queue_start(struct request_queue *q)
 }
 EXPORT_SYMBOL_GPL(blk_freeze_queue_start);
 
-void blk_mq_freeze_queue_wait(struct request_queue *q)
+void blk_freeze_queue_wait(struct request_queue *q)
 {
+       if (!q->mq_ops)
+               blk_drain_queue(q);
        wait_event(q->mq_freeze_wq, percpu_ref_is_zero(&q->q_usage_counter));
 }
-EXPORT_SYMBOL_GPL(blk_mq_freeze_queue_wait);
+EXPORT_SYMBOL_GPL(blk_freeze_queue_wait);
 
 int blk_mq_freeze_queue_wait_timeout(struct request_queue *q,
                                     unsigned long timeout)
@@ -160,7 +162,7 @@ void blk_freeze_queue(struct request_queue *q)
         * exported to drivers as the only user for unfreeze is blk_mq.
         */
        blk_freeze_queue_start(q);
-       blk_mq_freeze_queue_wait(q);
+       blk_freeze_queue_wait(q);
 }
 EXPORT_SYMBOL_GPL(blk_freeze_queue);
 
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 986f2b4f9760..d34a9ffaa940 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2778,7 +2778,7 @@ void nvme_wait_freeze(struct nvme_ctrl *ctrl)
 
        mutex_lock(&ctrl->namespaces_mutex);
        list_for_each_entry(ns, &ctrl->namespaces, list)
-               blk_mq_freeze_queue_wait(ns->queue);
+               blk_freeze_queue_wait(ns->queue);
        mutex_unlock(&ctrl->namespaces_mutex);
 }
 EXPORT_SYMBOL_GPL(nvme_wait_freeze);
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 8ae77e088c01..f90d78eb85df 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -259,7 +259,7 @@ void blk_mq_tagset_busy_iter(struct blk_mq_tag_set *tagset,
 void blk_freeze_queue(struct request_queue *q);
 void blk_unfreeze_queue(struct request_queue *q);
 void blk_freeze_queue_start(struct request_queue *q);
-void blk_mq_freeze_queue_wait(struct request_queue *q);
+void blk_freeze_queue_wait(struct request_queue *q);
 int blk_mq_freeze_queue_wait_timeout(struct request_queue *q,
                                     unsigned long timeout);
 int blk_mq_reinit_tagset(struct blk_mq_tag_set *set,
-- 
2.9.5