Btrfs cleanups for 4.4 (collected)

Hi,

a bunch of cleanup patches from the mailinglist, no functional changes. Reviewed and compile-tested, merge with current integration is without conflits. Please pull, thanks.

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The following changes since commit 25cb62b76430a91cc6195f902e61c2cb84ade622:

Linux 4.3-rc5 (2015-10-11 11:09:45 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git cleanups/for-4.4

for you to fetch changes up to ddd664f4478a4aaf0ac67a4297e33f1992bc9be2:

btrfs: reada: Fix returned errno code (2015-10-21 18:29:50 +0200)

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Alexandru Moise (8):
btrfs: Fixed dsize and last_off declarations
btrfs: Fixed declaration of old_len
btrfs: trimming some start_transaction() code away
btrfs: memset cur_trans->delayed_refs to zero
btrfs: use a single if() statement for one outcome in get_block_rsv()
btrfs: cleanup btrfs_balance profile validity checks
btrfs: change num_items type from u64 to unsigned int
btrfs: declare rsv_count as unsigned int instead of int

Byongho Lee (4):
btrfs: replace unnecessary list_for_each_entry_safe to list_for_each_entry
btrfs: remove unnecessary list_del
btrfs: cleanup iterating over prop_handlers array
btrfs: compress: put variables defined per compress type in struct to make cache friendly

Chandan Rajendra (1):
Btrfs: btrfs_submit_bio_hook: Use btrfs_wq_endio_type values instead of integer constants

Geliang Tang (1):
btrfs: fix a comment typo

Luis de Bethencourt (2):
btrfs: check-integrity: Fix returned errno codes
btrfs: reada: Fix returned errno code

Shan Hai (1):
btrfs/file.c: remove an unsed varialbe first_index

Zhao Lei (3):
btrfs: Move btrfs_raid_array to public
btrfs: use btrfs_raid_array for btrfs_get_num_tolerated_disk_barrier_failures()
btrfs: use btrfs_raid_array in btrfs_reduce_alloc_profile

 fs/btrfs/check-integrity.c  |   4 +-
 fs/btrfs/compression.c      |  94 +++++++++++++-------------
 fs/btrfs/ctree.c            |   4 +-
 fs/btrfs/disk-io.c          |  35 ++++++----
 fs/btrfs/extent-tree.c      |  58 +++++++---------
 fs/btrfs/file.c             |   5 +-
 fs/btrfs/free-space-cache.c |   2 +-
 fs/btrfs/inode.c            |   5 +-
 fs/btrfs/ioctl.c            |   3 +-
 fs/btrfs/props.c            |  13 ++--
 fs/btrfs/reada.c            |   8 ++-
 fs/btrfs/root-tree.c        |   2 +-
 fs/btrfs/transaction.c      |  32 +++------
 fs/btrfs/transaction.h      |   5 +-
 fs/btrfs/volumes.c          | 156 +++++++++++++++++++++++++-------------------
 fs/btrfs/volumes.h          |   5 ++
 16 files changed, 220 insertions(+), 211 deletions(-)