Btrfs updates for -rc1

Hey Chris,

Please pull from

git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work.git for-chris

It is based on v2.6.38. Mostly just cleanups and fixes, the biggest actual change would be moving us to the new truncate sequence. Here is the shortlog and such

Josef Bacik (13):
Btrfs: fix formatting in file.c
Btrfs: simplify our write path
Btrfs: fix how we deal with the pages array in the write path
Btrfs: change reserved_extents to an atomic_t
Btrfs: use a slab for the free space entries
Btrfs: convert to the new truncate sequence
Btrfs: cleanup error handling in the truncate path
Btrfs: handle errors in btrfs_orphan_cleanup
Btrfs: make sure to remove the orphan item from the in-memory list
Btrfs: only add orphan items when truncating
Btrfs: use mark_inode_dirty when expanding the file
Btrfs: add a comment explaining what btrfs_cont_expand does
Btrfs: return error if the range we want to map is bogus

 fs/btrfs/btrfs_inode.h      |    3 +-
 fs/btrfs/ctree.h            |    5 +-
 fs/btrfs/disk-io.c          |   15 ++-
 fs/btrfs/extent-tree.c      |   45 +++--
 fs/btrfs/extent_io.c        |    1 +
 fs/btrfs/file.c             |  385 ++++++++++++++++++++++---------------------
 fs/btrfs/free-space-cache.c |   34 ++--
 fs/btrfs/inode.c            |  241 +++++++++++++++------------
 fs/btrfs/ioctl.c            |    4 +-
 fs/btrfs/relocation.c       |    2 +-
 10 files changed, 399 insertions(+), 336 deletions(-)

Thanks,

Josef