[GIT PULL] bcachefs fixes for 6.10-rc6

[Kent Overstreet]

Hi Linus, fresh batch of fixes for you...

Cheers,
Kent

The following changes since commit bd4da0462ea7bf26b2a5df5528ec20c550f7ec41:

  bcachefs: Move the ei_flags setting to after initialization (2024-06-21 10:17:07 -0400)

are available in the Git repository at:

  https://evilpiepirate.org/git/bcachefs.git tags/bcachefs-2024-06-28

for you to fetch changes up to 64cd7de998f393e73981e2aa4ee13e4e887f01ea:

  bcachefs: Fix kmalloc bug in __snapshot_t_mut (2024-06-25 20:51:14 -0400)

----------------------------------------------------------------
bcachefs fixes for 6.10-rc6

simple stuff:
- null ptr/err ptr deref fixes
- fix for getting wedged on shutdown after journal error

- fix missing recalc_capacity() call, capacity now changes correctly
  after a device goes read only

  however: our capacity calculation still doesn't take into account when
  we have mixed ro/rw devices and the ro devices have data on them,
  that's going to be a more involved fix to separate accounting for
  "capacity used on ro devices" and "capacity used on rw devices"

- boring syzbot stuff

slightly more involved:
- discard, invalidate workers are now per device
  this has the effect of simplifying how we take device refs in these
  paths, and the device ref cleanup fixes a longstanding race between
  the device removal path and the discard path

- fixes for how the debugfs code takes refs on btree_trans objects
  we have debugfs code that prints in use btree_trans objects. It uses
  closure_get() on trans->ref, which is mainly for the cycle detector,
  but the debugfs code was using it on a closure that may have hit 0,
  which is not allowed; for performance reasons we cannot avoid having
  not-in-use transactions on the global list.

  introduce some new primitives to fix this and make the synchronization
  here a whole lot saner

----------------------------------------------------------------
Kent Overstreet (10):
      bcachefs: Fix freeing of error pointers
      bcachefs: fix seqmutex_relock()
      bcachefs: Make btree_deadlock_to_text() clearer
      closures: closure_get_not_zero(), closure_return_sync()
      bcachefs: Fix race between trans_put() and btree_transactions_read()
      bcachefs: Fix btree_trans list ordering
      bcachefs: Add missing recalc_capacity() call
      bcachefs: Fix null ptr deref in journal_pins_to_text()
      bcachefs: Add missing bch2_journal_do_writes() call
      bcachefs: Discard, invalidate workers are now per device

Pei Li (3):
      bcachefs: slab-use-after-free Read in bch2_sb_errors_from_cpu
      bcachefs: Fix shift-out-of-bounds in bch2_blacklist_entries_gc
      bcachefs: Fix kmalloc bug in __snapshot_t_mut

 fs/bcachefs/alloc_background.c      | 263 +++++++++++++++++++-----------------
 fs/bcachefs/alloc_background.h      |   6 +-
 fs/bcachefs/alloc_foreground.c      |   4 +-
 fs/bcachefs/bcachefs.h              |  16 ++-
 fs/bcachefs/btree_iter.c            |  19 +--
 fs/bcachefs/chardev.c               |   9 +-
 fs/bcachefs/debug.c                 | 109 +++++++++------
 fs/bcachefs/journal.c               |   5 +
 fs/bcachefs/journal_io.c            |   7 +
 fs/bcachefs/journal_seq_blacklist.c |   2 +-
 fs/bcachefs/sb-errors.c             |  14 +-
 fs/bcachefs/seqmutex.h              |  11 +-
 fs/bcachefs/snapshot.c              |   3 +
 fs/bcachefs/super.c                 |   6 +-
 include/linux/closure.h             |  23 ++++
 lib/closure.c                       |  52 ++++++-
 16 files changed, 342 insertions(+), 207 deletions(-)