[PATCH 0/5 v2] Struct to fs_info helpers

[David Sterba <dsterba@suse.com>]

v2:

- move helper definitions to fs.h
- add _Generic to the macros for type checking
- reuse helpers to some code duplication

Add convenience helpers for getting a fs_info from page, bio, inode etc.
There's one prep patch where tests use a normal helper that expects
valid inode->root->fs_info.

David Sterba (5):
  btrfs: tests: allocate dummy fs_info and root in test_find_delalloc()
  btrfs: add helpers to get inode from page/folio pointers
  btrfs: add helpers to get fs_info from page/folio pointers
  btrfs: add helper to get fs_info from struct inode pointer
  btrfs: hoist fs_info out of loops in end_bbio_data_write and
    end_bbio_data_read

 fs/btrfs/compression.c           |  8 +++---
 fs/btrfs/defrag.c                |  4 +--
 fs/btrfs/disk-io.c               | 11 ++++----
 fs/btrfs/export.c                |  2 +-
 fs/btrfs/extent_io.c             | 45 ++++++++++++++++----------------
 fs/btrfs/file.c                  | 14 +++++-----
 fs/btrfs/free-space-cache.c      |  2 +-
 fs/btrfs/fs.h                    | 11 ++++++++
 fs/btrfs/inode.c                 | 42 ++++++++++++++---------------
 fs/btrfs/ioctl.c                 | 40 ++++++++++++++--------------
 fs/btrfs/lzo.c                   |  4 +--
 fs/btrfs/props.c                 |  2 +-
 fs/btrfs/reflink.c               |  6 ++---
 fs/btrfs/relocation.c            |  2 +-
 fs/btrfs/tests/extent-io-tests.c | 28 +++++++++++++++++---
 15 files changed, 126 insertions(+), 95 deletions(-)

-- 
2.42.1