Merge tag 'bcachefs-2025-07-17' of git://evilpiepirate.org/bcachefs

Pull bcachefs fixes from Kent Overstreet:

 - two small syzbot fixes

 - fix discard behaviour regression; we no longer wait until the number
   of buckets needing discard is greater than the number of buckets
   available before kicking off discards

 - fix a fast_list leak when async object debugging is enabled

 - fixes for casefolding when CONFIG_UTF8 != y

* tag 'bcachefs-2025-07-17' of git://evilpiepirate.org/bcachefs:
  bcachefs: Fix bch2_maybe_casefold() when CONFIG_UTF8=n
  bcachefs: Fix build when CONFIG_UNICODE=n
  bcachefs: Fix reference to invalid bucket in copygc
  bcachefs: Don't build aux search tree when still repairing node
  bcachefs: Tweak threshold for allocator triggering discards
  bcachefs: Fix triggering of discard by the journal path
  bcachefs: io_read: remove from async obj list in rbio_done()