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

Ming Lei
2017-08-31T17:29:13Z

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.lei@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