[PATCH v4 0/6] blk-wbt: simple improvment to enable wbt correctly

Yu Kuai
2022-09-30T02:57:15Z

From: Yu Kuai <yukuai3@huawei.com>

changes in v4:
- remove patch 3 from v3
- add patch 2,3 in v4

changes in v3:
- instead of check elevator name, add a flag in elevator_queue, as
suggested by Christoph.
- add patch 3 and patch 5 to this patchset.

changes in v2:
- define new api if wbt config is not enabled in patch 1.

Yu Kuai (6):
elevator: remove redundant code in elv_unregister_queue()
blk-wbt: remove unnecessary check in wbt_enable_default()
blk-wbt: make enable_state more accurate
blk-wbt: don't show valid wbt_lat_usec in sysfs while wbt is disabled
elevator: add new field flags in struct elevator_queue
blk-wbt: don't enable throttling if default elevator is bfq

block/bfq-iosched.c | 2 ++
block/blk-sysfs.c | 6 +++++-
block/blk-wbt.c | 26 ++++++++++++++++++++++----
block/blk-wbt.h | 17 ++++++++++++-----
block/elevator.c | 8 ++------
block/elevator.h | 5 ++++-
6 files changed, 47 insertions(+), 17 deletions(-)

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2.31.1