[GIT PULL] Btrfs fixes

[Chris Mason]

Hi Linus,

My for-linus branch has some btrfs fixes:

git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs.git for-linus

Eric's rcu barrier patch fixes a long standing problem with our unmount
code hanging on to devices in workqueue helpers.  Liu Bo nailed down a
difficult assertion for in-memory extent mappings.

Liu Bo (4) commits (+9/-7):
    Btrfs: get better concurrency for snapshot-aware defrag work (+3/-0)
    Btrfs: fix warning when creating snapshots (+5/-6)
    Btrfs: fix warning of free_extent_map (+1/-0)
    Btrfs: remove btrfs_try_spin_lock (+0/-1)

Josef Bacik (1) commits (+4/-1):
    Btrfs: return EIO if we have extent tree corruption

Eric Sandeen (1) commits (+6/-0):
    btrfs: use rcu_barrier() to wait for bdev puts at unmount

Wang Shilong (1) commits (+6/-4):
    Btrfs: return as soon as possible when edquot happens

Total: (7) commits (+25/-12)

 fs/btrfs/extent-tree.c |  5 ++++-
 fs/btrfs/file.c        |  1 +
 fs/btrfs/inode.c       |  3 +++
 fs/btrfs/locking.h     |  1 -
 fs/btrfs/qgroup.c      | 10 ++++++----
 fs/btrfs/transaction.c | 11 +++++------
 fs/btrfs/volumes.c     |  6 ++++++
 7 files changed, 25 insertions(+), 12 deletions(-)
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