[PATCH 0/3] btrfs: add parent-child ownership check

[Qu Wenruo <wqu@suse.com>]

Tree-checker doesn't really check owner except for empty leaf.

This allows parent-child ownership mismatch to sneak in.

Enhance the checks again tree block owner by:

- Add owner check when reading child tree blocks

- Make sure the tree root owner matches the root key

Unfortunately the check still has some cases missing, mostly for

- Log/reloc trees
  Need full root key to check, which is not really possible for
  some backref call sites.


The first 2 patches are just cleanup to unify the error handling
patterns, there are some "creative" way checking the errors, which is
not really reader friendly.

The last patch is doing the real work.

Qu Wenruo (3):
  btrfs: unify the error handling pattern for read_tree_block()
  btrfs: unify the error handling of btrfs_read_buffer()
  btrfs: check extent buffer owner against the owner rootid

 fs/btrfs/backref.c      |  7 +++--
 fs/btrfs/ctree.c        | 48 +++++++++++++++++++---------------
 fs/btrfs/disk-io.c      | 37 +++++++++++++++++++++-----
 fs/btrfs/print-tree.c   |  4 +--
 fs/btrfs/relocation.c   |  3 ++-
 fs/btrfs/tree-checker.c | 57 +++++++++++++++++++++++++++++++++++++++++
 fs/btrfs/tree-checker.h |  1 +
 7 files changed, 125 insertions(+), 32 deletions(-)

-- 
2.35.1