[GIT PULL] Block fixes for 6.19-rc5

[Jens Axboe <axboe@kernel.dk>]

Hi Linus,

A few fixes that should go into block for the 6.19-rc5 kernel release.
This pull request contains:

- Kill unlikely checks for blk-rq-qos. These checks are really
  all-or-nothing, either the branch is taken all the time, or it's not.
  Depending on the configuration, either one of those cases may be true.
  Just remove the annotation.

- Fix for merging bios with different app tags set.

- Fix for a recently introduced slowdown due to RCU synchronization.

- Fix for a status change on loop while it's in use, and then a later
  fix for that fix.

- Fix for the async partition scanning in ublk.

Please pull!


The following changes since commit 69153e8b97ebe2afc0dd101767a9805130305500:

  block, bfq: update outdated comment (2026-01-01 08:57:37 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git tags/block-6.19-20260109

for you to fetch changes up to f0d385f6689f37a2828c686fb279121df006b4cb:

  ublk: fix use-after-free in ublk_partition_scan_work (2026-01-09 06:55:30 -0700)

----------------------------------------------------------------
block-6.19-20260109

----------------------------------------------------------------
Breno Leitao (1):
      blk-rq-qos: Remove unlikely() hints from QoS checks

Caleb Sander Mateos (1):
      block: don't merge bios with different app_tags

Mikulas Patocka (1):
      blk-mq: avoid stall during boot due to synchronize_rcu_expedited

Ming Lei (1):
      ublk: fix use-after-free in ublk_partition_scan_work

Raphael Pinsonneault-Thibeault (1):
      loop: don't change loop device under exclusive opener in loop_set_status

Tetsuo Handa (1):
      loop: add missing bd_abort_claiming in loop_set_status

 block/blk-integrity.c    | 23 ++++++++++++++++++-----
 block/blk-mq.c           |  3 +--
 block/blk-rq-qos.h       | 25 +++++++++----------------
 drivers/block/loop.c     | 45 +++++++++++++++++++++++++++++++++------------
 drivers/block/ublk_drv.c | 37 ++++++++++++++++++++++---------------
 5 files changed, 83 insertions(+), 50 deletions(-)

-- 
Jens Axboe