[GIT PULL] Btrfs fixes for 5.3-rc3

[David Sterba]

Hi,

please pull the branch with the following fixes:

* tiny race window during 2 transactions aborting at the same time can
  accidentally lead to a commit

* regression fix, possible deadlock during fiemap

* fix for an old bug when incremental send can fail on a file that has
  been deduplicated in a special way

Thanks.

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The following changes since commit a3b46b86ca76d7f9d487e6a0b594fd1984e0796e:

  btrfs: fix extent_state leak in btrfs_lock_and_flush_ordered_range (2019-07-26 12:21:22 +0200)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-5.3-rc2-tag

for you to fetch changes up to a6d155d2e363f26290ffd50591169cb96c2a609e:

  Btrfs: fix deadlock between fiemap and transaction commits (2019-07-30 18:25:12 +0200)

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Filipe Manana (3):
      Btrfs: fix incremental send failure after deduplication
      Btrfs: fix race leading to fs corruption after transaction abort
      Btrfs: fix deadlock between fiemap and transaction commits

 fs/btrfs/backref.c     |  2 +-
 fs/btrfs/send.c        | 77 ++++++++++----------------------------------------
 fs/btrfs/transaction.c | 32 ++++++++++++++++++---
 fs/btrfs/transaction.h |  3 ++
 4 files changed, 47 insertions(+), 67 deletions(-)