[GIT PULL] Btrfs updates

[Chris Mason <chris.mason@oracle.com>]

Hi everyone,

The master branch of the btrfs unstable repo:

git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable.git master

Has a few bug fixes.  Josef fixed up a crash in the free space cache
error handling code, and it should close out the open bugs there.

Li Zefan found a slab corruption in btrfs fitrim support.

Otherwise, these are smaller fixes for corner cases.

This is a separate pull from my plugging fixes because this is against
2.6.38, while the plugging stuff was on top of 2.6.39-rc4.

David Sterba (1) commits (+1/-0):
    btrfs: add missing spin_unlock to a rare exit path

Itaru Kitayama (1) commits (+1/-1):
    btrfs: fix wrong allocating flag when reading page

Josef Bacik (2) commits (+8/-5):
    Btrfs: free bitmaps properly when evicting the cache (+7/-4)
    Btrfs: put the right bio if we have an error (+1/-1)

Li Zefan (1) commits (+1/-1):
    Btrfs: Free free_space item properly in btrfs_trim_block_group()

Tsutomu Itoh (3) commits (+21/-8):
    Btrfs: fix missing mutex_unlock in btrfs_del_dir_entries_in_log() (+5/-2)
    Btrfs: cleanup error handling in inode.c (+9/-6)
    Btrfs: check return value of kmalloc() (+7/-0)

Total: (8) commits (+32/-15)

 fs/btrfs/disk-io.c          |    1 +
 fs/btrfs/extent-tree.c      |    4 ++++
 fs/btrfs/extent_io.c        |    2 +-
 fs/btrfs/free-space-cache.c |   13 ++++++++-----
 fs/btrfs/inode.c            |   20 +++++++++++++-------
 fs/btrfs/tree-log.c         |    7 +++++--
 6 files changed, 32 insertions(+), 15 deletions(-)