Merge tag 'bcachefs-2023-12-10' of https://evilpiepirate.org/git/bcachefs

Merge tag 'bcachefs-2023-12-10' of https://evilpiepirate.org/git/bcachefs

Pull more bcachefs bugfixes from Kent Overstreet:

 - Fix a rare emergency shutdown path bug: dropping journal pins after
   the filesystem has mostly been torn down is not what we want.

 - Fix some concurrency issues with the btree write buffer and journal
   replay by not using the btree write buffer until journal replay is
   finished

 - A fixup from the prior patch to kill journal pre-reservations: at the
   start of the btree update path, where previously we took a
   pre-reservation, we do at least want to check the journal watermark.

 - Fix a race between dropping device metadata and btree node writes,
   which would re-add a pointer to a device that had just been dropped

 - Fix one of the SCRU lock warnings, in
   bch2_compression_stats_to_text().

 - Partial fix for a rare transaction paths overflow, when indirect
   extents had been split by background tasks, by not running certain
   triggers when they're not needed.

 - Fix for creating a snapshot with implicit source in a subdirectory of
   the containing subvolume

 - Don't unfreeze when we're emergency read-only

 - Fix for rebalance spinning trying to compress unwritten extentns

 - Another deleted_inodes fix, for directories

 - Fix a rare deadlock (usually just an unecessary wait) when flushing
   the journal with an open journal entry.

* tag 'bcachefs-2023-12-10' of https://evilpiepirate.org/git/bcachefs:
  bcachefs: Close journal entry if necessary when flushing all pins
  bcachefs: Fix uninitialized var in bch2_journal_replay()
  bcachefs: Fix deleted inode check for dirs
  bcachefs: rebalance shouldn't attempt to compress unwritten extents
  bcachefs: don't attempt rw on unfreeze when shutdown
  bcachefs: Fix creating snapshot with implict source
  bcachefs: Don't run indirect extent trigger unless inserting/deleting
  bcachefs: Convert compression_stats to for_each_btree_key2
  bcachefs: Fix bch2_extent_drop_ptrs() call
  bcachefs: Fix a journal deadlock in replay
  bcachefs; Don't use btree write buffer until journal replay is finished
  bcachefs: Don't drop journal pins in exit path