Merge branch 'for-6.2/block' into for-next

* for-6.2/block:
  block, bfq: cleanup __bfq_weights_tree_remove()
  block, bfq: cleanup bfq_weights_tree add/remove apis
  block, bfq: do not idle if only one group is activated
  block, bfq: refactor the counting of 'num_groups_with_pending_reqs'
  block, bfq: record how many queues have pending requests
  block, bfq: support to track if bfqq has pending requests