Merge tag 'file-exchange-refactorings-6.10_2024-04-15' of https://git.kernel.org...

xfs: refactorings for atomic file content exchanges

This series applies various cleanups and refactorings to file IO
handling code ahead of the main series to implement atomic file content
exchanges.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
* tag 'file-exchange-refactorings-6.10_2024-04-15' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux:
  xfs: constify xfs_bmap_is_written_extent
  xfs: refactor non-power-of-two alignment checks
  xfs: hoist multi-fsb allocation unit detection to a helper
  xfs: create a new helper to return a file's allocation unit
  xfs: declare xfs_file.c symbols in xfs_file.h
  xfs: move xfs_iops.c declarations out of xfs_inode.h
  xfs: move inode lease breaking functions to xfs_inode.c