[PATCH 00/10] A bunch of misc cleanups

[Nikolay Borisov <nborisov@suse.com>]

Here's an assortment of little quality-of-life patches that I created while
looking into the raid56 code. They should bear no functional changes and have
tested them with xfstest and nothing fell over so should be rather low risk.

Patch 1 moves code in __btrfs_map_block, essentially assigning tgtdev_map/raid_map
closet to where space for them is allocated. This also neccesiated moving the
call to sort_parity_stripes. The end result is (hopefully) slightly easier to
follow __btrfs_map_block.

Next 5 patches cleanup minor things in raid56.c such as removing redundant checks,
making code interacting with bio_list more in line with what the rest of the
kernel is doing. Finally it's using some macros/functions instead of open-coding
them. Really just a bunch of low hanging fruit.

Final 4 patches gradually remove all labels in btrfs_submit_compressed_read.
Current failures can be handled "inline" so to speak, without the need for
extra labels. This likely will change once the BUG_ONs are removed but we are
not there yet.

Nikolay Borisov (10):
  btrfs: Always initialize btrfs_bio::tgtdev_map/raid_map pointers
  btrfs: raid56: Remove redundant check in rbio_add_io_page
  btrfs: raid56: Assign bio in while()
  btrfs: raid56: Remove out label in __raid56_parity_recover
  btrfs: raid56: Use in_range where applicable
  btrfs: raid56: Don't opencode swap()
  btrfs: Remove fail label in check_compressed_csum
  btrfs: Remove fail1 label in btrfs_submit_compressed_read
  btrfs: Remove fail2 label from btrfs_submit_compressed_read
  btrfs: Remove out label in btrfs_submit_compressed_read

 fs/btrfs/compression.c | 48 +++++++++++++-------------------
 fs/btrfs/raid56.c      | 63 ++++++++++--------------------------------
 fs/btrfs/volumes.c     | 34 ++++++++++-------------
 3 files changed, 49 insertions(+), 96 deletions(-)

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2.17.1