Btrfs fixes

Hi Linus,

Filipe hit two problems in my block group cache patches. We finalized the fixes last week and ran through more tests.

Can you please pull:

git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs.git for-linus-4.1

Chris Mason (2) commits (+25/-17):
Btrfs: prevent list corruption during free space cache processing (+18/-14)
Btrfs: fix inode cache writeout (+7/-3)

Total: (2) commits (+25/-17)

 fs/btrfs/free-space-cache.c | 42 +++++++++++++++++++++++++-----------------
 1 file changed, 25 insertions(+), 17 deletions(-)