Merge tag 'bcachefs-2025-04-24' of git://evilpiepirate.org/bcachefs

Pull bcachefs fixes from Kent Overstreet:

 - Case insensitive directories now work

 - Ciemap now correctly reports on unwritten pagecache data

 - bcachefs tools 1.25.1 was incorrectly picking unaligned bucket sizes;
   fix journal and write path bugs this uncovered

And assorted smaller fixes...

* tag 'bcachefs-2025-04-24' of git://evilpiepirate.org/bcachefs: (24 commits)
  bcachefs: Rework fiemap transaction restart handling
  bcachefs: add fiemap delalloc extent detection
  bcachefs: refactor fiemap processing into extent helper and struct
  bcachefs: track current fiemap offset in start variable
  bcachefs: drop duplicate fiemap sync flag
  bcachefs: Fix btree_iter_peek_prev() at end of inode
  bcachefs: Make btree_iter_peek_prev() assert more precise
  bcachefs: Unit test fixes
  bcachefs: Print mount opts earlier
  bcachefs: unlink: casefold d_invalidate
  bcachefs: Fix casefold lookups
  bcachefs: Casefold is now a regular opts.h option
  bcachefs: Implement fileattr_(get|set)
  bcachefs: Allocator now copes with unaligned buckets
  bcachefs: Start copygc, rebalance threads earlier
  bcachefs: Refactor bch2_run_recovery_passes()
  bcachefs: bch2_copygc_wakeup()
  bcachefs: Fix ref leak in write_super()
  bcachefs: Change __journal_entry_close() assert to ERO
  bcachefs: Ensure journal space is block size aligned
  ...