[PATCH 0/8] Locking cleanups and lockdep fix

[Josef Bacik <josef@toxicpanda.com>]

Hello,

Filipe reported a lockdep splat that he hit on btrfs/187, but honestly could be
hit anywhere we do readdir on a sufficiently large fs.  Fixing this is fairly
straightforward, but enabled me to do a lot of extra cleanups, especially now
that my other locking fixes have been merged.  The first two patches are to
address the lockdep problem.  The followup patches are cleaning out the
recursive locking support, which we no longer require.  I would have separated
this work, but btrfs_next_old_leaf was a heavy user of this, so it would be
annoying to take separately, hence putting it all together.  Thanks,

Josef

Josef Bacik (8):
  btrfs: cleanup the locking in btrfs_next_old_leaf
  btrfs: unlock to current level in btrfs_next_old_leaf
  btrfs: kill path->recurse
  btrfs: remove the recursion handling code in locking.c
  btrfs: remove __btrfs_read_lock_root_node
  btrfs: use btrfs_tree_read_lock in btrfs_search_slot
  btrfs: remove the recurse parameter from __btrfs_tree_read_lock
  btrfs: remove ->recursed from extent_buffer

 fs/btrfs/ctree.c     | 47 +++++++++++++----------------
 fs/btrfs/ctree.h     |  1 -
 fs/btrfs/extent_io.c |  1 -
 fs/btrfs/extent_io.h |  1 -
 fs/btrfs/locking.c   | 72 +++-----------------------------------------
 fs/btrfs/locking.h   | 11 ++-----
 6 files changed, 28 insertions(+), 105 deletions(-)

-- 
2.26.2