Btrfs fixes for 4.9-rc4

Hi,

please pull the following assorted small fixes to 4.9, thanks. The branch is "rc3" as it was meant for rc3 but I did not get to sending the pull request, and I don't want to recreate the branch just because of a slightly wrong name.

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The following changes since commit d9ed71e5457c8c5bf1dc706e06468eab9e2aa87e:

Merge branch 'fst-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.9 (2016-10-12 13:16:00 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-4.9-rc3

for you to fetch changes up to 9d1032cc49a8a1065e79ee323de66bcb4fdbd535:

btrfs: fix WARNING in btrfs_select_ref_head() (2016-10-24 18:20:29 +0200)

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Dan Carpenter (1):
Btrfs: remove some no-op casts

Goldwyn Rodrigues (1):

      btrfs: qgroup: Prevent qgroup->reserved from going subzero

Liu Bo (1):
Btrfs: kill BUG_ON in do_relocation

Wang Xiaoguang (3):
btrfs: make file clone aware of fatal signals
btrfs: pass correct args to btrfs_async_run_delayed_refs()
btrfs: fix WARNING in btrfs_select_ref_head()

 fs/btrfs/extent-tree.c |  3 +++
 fs/btrfs/extent_io.c   |  8 ++++----
 fs/btrfs/inode.c       | 13 +++++++++----
 fs/btrfs/ioctl.c       |  5 +++++
 fs/btrfs/relocation.c  |  9 ++++++++-
 5 files changed, 29 insertions(+), 9 deletions(-)

Thanks Dave, I'll get this in.

-chris