Merge tag 'for-7.3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "This is the summer edition of btrfs changes, smaller than usual. Yet,
  there are performance improvements in various areas or for specific
  workloads and some notable changes like removing space cache v1 code
  or mount option reduction.

  User visible changes:

   - free space v1 disabled by default; the v2 (free space tree) is mkfs
     default since 5.15, filesystems with v1 still work but could be
     slightly slower due to lack of block group caching

   - mount option 'rescue=usebackuproot' requires read-only mount, it's
     too risky to allow writable mount

   - remove standalone mount option 'usebackuproot', deprecated in 5.9

   - preserve constraints of NODATASUM and NODATACOW when chattr and
     mount options may change the attributes

   - remove arbitrary limitation of 4KiB for page size when allowing
     block sizes smaller than page

   - print messages when pinned block groups affect swap activation

  Performance improvements:

   - use iomap bounce buffer for direct io instead of a fall back to
     buffered io; past correctness vs speed trade-offs dropped
     performance to ~50% of theoretical maximum, now it's ~95%,
     effectively doubled

   - replace xarray with local LRU list for tracking inhibited
     extent buffers, restored performance to pre-inhibition state
     (relatively ~3x)

   - remove unnecessary 1 jiffy delay in "non-SSD" mode with multiple
     logging tasks, decrease latency, throughput increased ~5x on sample
     workload

   - skip hole detection during full fsync for files without holes
     and lots of extents, reduce run time ~5x on sample workload
     (microsecond ranges)

   - reduce locking around extent readahead so it does not slow down
     other tasks using an overlapping range

   - enhance extent buffer allocation modes to allow NOWAIT semantics
     in some cases

  Notable fixes:

   - write-protect folios during writeback, prevent concurrent mmap
     and compress/checksumming/etc undesired interactions

   - in zoned mode, handle transient overcommit full instead of going
     read-only

   - fix possible deadlock between defragmentation and delayed
     allocation reservations

   - handle remaining iputs at umount time

   - fix lockdep warning between device scan locking and log mutex

   - add workaround for degenerate RAID56 device count modes (2 and 3)
     not supported by the parity calculation library

   - restore check that subvolume is not read-only when changing ACLs

   - retry reading verity data colliding with up-to-date status changes

  Core:

   - simplify raid56 stripe handling by using contiguous virtual
     allocations

   - in zoned mode, fix various metadata write issues in writeback or
     unmount

   - space reservation fixes

   - remove unused data structure members

   - more auto-freeing conversions

   - error pointer values are printed using %pe format"

* tag 'for-7.3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (72 commits)
  btrfs: skip hole detection during full fsync for files without holes
  btrfs: add extra ASSERT()s to make sure the folio size is correct
  btrfs: use GFP_NOWAIT for tree block readahead
  btrfs: enable unlocked NOFAIL retry for eb allocations
  btrfs: add struct btrfs_eb_prealloc
  btrfs: factor init_extent_buffer from __alloc_extent_buffer
  btrfs: qgroup: fix a wrong length calculation in qgroup_free_reserved_data()
  btrfs: add validation for extent states
  btrfs: use aligned range for locking in reflink
  btrfs: use aligned range for locking in extent_fiemap()
  btrfs: zoned: don't clobber the extent buffer when zeroing it out
  btrfs: zoned: drop stranded dirty metadata buffers at unmount
  btrfs: zoned: drop stranded dirty metadata on transaction abort
  btrfs: zoned: flush active metadata block group at btree_writepages() start
  btrfs: convert reflink.c to use btrfs_inode as parameters
  btrfs: use simple booleans for log_commit field in struct btrfs_root
  btrfs: check for exit condition after waking in wait_log_commit()
  btrfs: move condition for log commit wait into wait_log_commit()
  btrfs: remove log batch counter use for fsync
  btrfs: stop sleeping for one jiffy in non-ssd mounts during log commit
  ...

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