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

[Yu Kuai]

From: Yu Kuai <yukuai3@xxxxxxxxxx>

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(-)

-- 
2.31.1