Before doing queue release, the queue has been freezed already
by blk_cleanup_queue(), so needn't to freeze queue for deleting
tag set.
This patch fixes the WARNING of "percpu_ref_kill() called more than once!"
which is triggered during unloading block driver.
Cc: Tejun Heo <t...@kernel.org>
Signed-off-by: Ming Lei <ming....@canonical.com>
---
block/blk-mq.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 5189cb1..ac8a041 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1713,14 +1713,10 @@ static void blk_mq_del_queue_tag_set(struct
request_queue *q)
{
struct blk_mq_tag_set *set = q->tag_set;
- blk_mq_freeze_queue(q);
-
mutex_lock(&set->tag_list_lock);
list_del_init(&q->tag_set_list);
blk_mq_update_tag_set_depth(set);
mutex_unlock(&set->tag_list_lock);
-
- blk_mq_unfreeze_queue(q);
}
static void blk_mq_add_queue_tag_set(struct blk_mq_tag_set *set,
--
1.7.9.5
--
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