block: kill all_q_node in request_queue

all_q_node has not been used since commit 4b855ad37194 ("blk-mq: Create
hctx for each present CPU"), so remove it.

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 5c58a3b2bf0038083b9dc2b88293349fa8afb22b..317ab30d29046baaa29d13d0213ef9c63c4bf95c 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -548,7 +548,6 @@ struct request_queue {
        struct rcu_head         rcu_head;
        wait_queue_head_t       mq_freeze_wq;
        struct percpu_ref       q_usage_counter;
-       struct list_head        all_q_node;
 
        struct blk_mq_tag_set   *tag_set;
        struct list_head        tag_set_list;