From: Yu Kuai <yukuai3@huawei.com>

Changes in RFC v2:
 - update commit message for patch 1;
 - also handle min_shallow_depth in patch 2;
 - add patch 3 to choose none elevator by default;
 - add patch 4 to fix default wake_batch;

Yu Kuai (4):
  block/mq-deadline: Revert "block/mq-deadline: Fix the tag reservation
    code"
  lib/sbitmap: fix shallow_depth tag allocation
  block/elevator: choose none elevator for high IO concurrency ability
    disk
  block/mq-deadline: introduce min_async_depth

 block/elevator.c        | 11 +++++++++
 block/mq-deadline.c     | 35 +++++++++++++-------------
 include/linux/sbitmap.h |  6 ++---
 lib/sbitmap.c           | 55 +++++++++++++++++++++--------------------
 4 files changed, 59 insertions(+), 48 deletions(-)

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2.39.2