[PATCH 0/3] Cleanups around btrfs_get_extent_fiemap

[Nikolay Borisov <nborisov@suse.com>]

Following a conversation with Johaness this is what fell out. Turns out the
signature of btrfs_get_extent_fiemap is needlessly complext. So the first patch 
fixes it by removing the unnecessary arguments. Patch 2 is a bit of a "catch-all"
mainly renaming variables, thus helping recognise what the code does and
refreshing comments and removing one extra if. Finally, patch 3 removes an
assignment making it (at least to me) more clear what context a particular
variable is used in.

This has survived multiple xfstest runs. 

Nikolay Borisov (3):
  btrfs: Remove unused arguments from btrfs_get_extent_fiemap
  btrfs: Refactor btrfs_get_extent_fiemap
  btrfs: Remove redundant assignment

 fs/btrfs/ctree.h     |  3 +-
 fs/btrfs/extent_io.c |  3 +-
 fs/btrfs/file.c      |  3 +-
 fs/btrfs/inode.c     | 92 +++++++++++++++++++++++---------------------
 4 files changed, 51 insertions(+), 50 deletions(-)

-- 
2.17.1