[GIT PULL] Block fixes for 5.4-rc3

[Jens Axboe <axboe@kernel.dk>]

Hi Linus,

Here's a set of fixes that should go into this release. This pull
request contains:

- Fix wbt performance regression introduced with the blk-rq-qos
  refactoring (Harshad)

- Fix io_uring fileset removal inadvertently killing the workqueue (me)

- Fix io_uring typo in linked command nonblock submission (Pavel)

- Remove spurious io_uring wakeups on request free (Pavel)

- Fix null_blk zoned command error return (Keith)

- Don't use freezable workqueues for backing_dev, also means we can
  revert a previous libata hack (Mika)

- Fix nbd sysfs mutex dropped too soon at removal time (Xiubo)

Please pull!


  git://git.kernel.dk/linux-block.git tags/for-linus-20191010


----------------------------------------------------------------
Harshad Shirwadkar (1):
      blk-wbt: fix performance regression in wbt scale_up/scale_down

Jens Axboe (1):
      io_uring: only flush workqueues on fileset removal

Keith Busch (1):
      null_blk: Fix zoned command return code

Mika Westerberg (2):
      bdi: Do not use freezable workqueue
      Revert "libata, freezer: avoid block device removal while system is frozen"

Pavel Begunkov (2):
      io_uring: fix reversed nonblock flag for link submission
      io_uring: remove wait loop spurious wakeups

Xiubo Li (1):
      nbd: fix possible sysfs duplicate warning

 block/blk-rq-qos.c             | 14 +++++++++-----
 block/blk-rq-qos.h             |  4 ++--
 block/blk-wbt.c                |  6 ++++--
 drivers/ata/libata-scsi.c      | 21 ---------------------
 drivers/block/nbd.c            |  2 +-
 drivers/block/null_blk_zoned.c |  3 +--
 fs/io_uring.c                  | 24 ++++++++++--------------
 kernel/freezer.c               |  6 ------
 mm/backing-dev.c               |  4 ++--
 9 files changed, 29 insertions(+), 55 deletions(-)

-- 
Jens Axboe