[PATCH stable-5.4 0/6] backport fixes for xfstests btrfs/199,200,203,204

[Anand Jain]

This series backports fixes for the xfstests test cases btrfs/199
btrfs/200 btrfs/203 and btrfs/204.

patch 1 is fix for btrfs/200
patch 2 fixes regression in patch 1 and is fix for btrfs/203 
patch 3 helps to fix conflicts in patch 4
patch 4 is fix for btrfs/199
patch 5 helps to avoid conflicts in patch6
patch 6 is fix for btrfs/204

patch1 Btrfs: send, allow clone operations within the same file
patch2 Btrfs: send, fix emission of invalid clone operations within the same file
patch3 btrfs: volumes: Use more straightforward way to calculate map length
patch4 btrfs: Ensure we trim ranges across block group boundary
patch5 btrfs: fix RWF_NOWAIT write not failling when we need to cow
patch6 btrfs: allow btrfs_truncate_block() to fallback to nocow for data space reservation

Filipe Manana (3):
  Btrfs: send, allow clone operations within the same file
  Btrfs: send, fix emission of invalid clone operations within the same
    file
  btrfs: fix RWF_NOWAIT write not failling when we need to cow

Qu Wenruo (3):
  btrfs: volumes: Use more straightforward way to calculate map length
  btrfs: Ensure we trim ranges across block group boundary
  btrfs: allow btrfs_truncate_block() to fallback to nocow for data
    space reservation

 fs/btrfs/ctree.h       |  2 ++
 fs/btrfs/extent-tree.c | 41 +++++++++++++++++++++++++++++----------
 fs/btrfs/file.c        | 23 ++++++++++++++++++----
 fs/btrfs/inode.c       | 44 +++++++++++++++++++++++++++++++++++-------
 fs/btrfs/send.c        | 19 +++++++++++++-----
 fs/btrfs/volumes.c     |  8 +++++---
 6 files changed, 108 insertions(+), 29 deletions(-)

-- 
2.25.1