Merge tag 'for-6.14-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "User visible changes, features:

   - rebuilding of the free space tree at mount time is done in more
     transactions, fix potential hangs when the transaction thread is
     blocked due to large amount of block groups

   - more read IO balancing strategies (experimental config), add two
     new ways how to select a device for read if the profiles allow that
     (all RAID1*), the current default selects the device by pid which
     is good on average but less performant for single reader workloads

       - select preferred device for all reads (namely for testing)
       - round-robin, balance reads across devices relevant for the
         requested IO range

   - add encoded write ioctl support to io_uring (read was added in
     6.12), basis for writing send stream using that instead of
     syscalls, non-blocking mode is not yet implemented

   - support FS_IOC_READ_VERITY_METADATA, applications can use the
     metadata to do their own verification

   - pass inode's i_write_hint to bios, for parity with other
     filesystems, ioctls F_GET_RW_HINT/F_SET_RW_HINT

  Core:

   - in zoned mode: allow to directly reclaim a block group by simply
     resetting it, then it can be reused and another block group does
     not need to be allocated

   - super block validation now also does more comprehensive sys array
     validation, adding it to the points where superblock is validated
     (post-read, pre-write)

   - subpage mode fixes:
      - fix double accounting of blocks due to some races
      - improved or fixed error handling in a few cases (compression,
        delalloc)

   - raid stripe tree:
      - fix various cases with extent range splitting or deleting
      - implement hole punching to extent range
      - reduce number of stripe tree lookups during bio submission
      - more self-tests

   - updated self-tests (delayed refs)

   - error handling improvements

   - cleanups, refactoring
      - remove rest of backref caching infrastructure from relocation,
        not needed anymore
      - error message updates
      - remove unnecessary calls when extent buffer was marked dirty
      - unused parameter removal
      - code moved to new files

  Other code changes: add rb_find_add_cached() to the rb-tree API"

* tag 'for-6.14-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (127 commits)
  btrfs: selftests: add a selftest for deleting two out of three extents
  btrfs: selftests: add test for punching a hole into 3 RAID stripe-extents
  btrfs: selftests: add selftest for punching holes into the RAID stripe extents
  btrfs: selftests: test RAID stripe-tree deletion spanning two items
  btrfs: selftests: don't split RAID extents in half
  btrfs: selftests: check for correct return value of failed lookup
  btrfs: don't use btrfs_set_item_key_safe on RAID stripe-extents
  btrfs: implement hole punching for RAID stripe extents
  btrfs: fix deletion of a range spanning parts two RAID stripe extents
  btrfs: fix tail delete of RAID stripe-extents
  btrfs: fix front delete range calculation for RAID stripe extents
  btrfs: assert RAID stripe-extent length is always greater than 0
  btrfs: don't try to delete RAID stripe-extents if we don't need to
  btrfs: selftests: correct RAID stripe-tree feature flag setting
  btrfs: add io_uring interface for encoded writes
  btrfs: remove the unused locked_folio parameter from btrfs_cleanup_ordered_extents()
  btrfs: add extra error messages for delalloc range related errors
  btrfs: subpage: dump the involved bitmap when ASSERT() failed
  btrfs: subpage: fix the bitmap dump of the locked flags
  btrfs: do proper folio cleanup when run_delalloc_nocow() failed
  ...

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