Merge tag 'block-6.19-20260109' of git://git.kernel.org/pub/scm/linux/kernel/git...

Pull block fixes from Jens Axboe:

 - 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

* tag 'block-6.19-20260109' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  ublk: fix use-after-free in ublk_partition_scan_work
  blk-mq: avoid stall during boot due to synchronize_rcu_expedited
  loop: add missing bd_abort_claiming in loop_set_status
  block: don't merge bios with different app_tags
  blk-rq-qos: Remove unlikely() hints from QoS checks
  loop: don't change loop device under exclusive opener in loop_set_status