[GIT PULL] ext4 bugfixes/cleanups

["Theodore Ts'o" <tytso@mit.edu>]

Hi Linus,

Please pull from:

        git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git for_linus

This patch series contains a number of bug fixes that have been
discovered by primarily by benchmarkers and people who have been trying
out ext4.  A few cleanups have been included as well.

Thanks!!

                                                - Ted

Aneesh Kumar K.V (5):
      ext4: Fix data corruption when writing to prealloc area
      ext4: Improve error handling in mballoc
      ext4: Convert the usage of NR_CPUS to nr_cpu_ids.
      ext4: Don't allow lg prealloc list to be grow large.
      ext4: Cleanup the block reservation code path

Eric Sandeen (4):
      ext4: sync up block and inode bitmap reading functions
      ext4: lock block groups when initializing
      ext4: fix ext4_da_write_begin error path
      ext4: remove write-only variables from ext4_ordered_write_end

Hidehiro Kawai (2):
      ext4: don't read inode block if the buffer has a write error
      jbd2: don't abort if flushing file data failed

Li Zefan (1):
      ext4: improve ext4_fill_flex_info() a bit

Theodore Ts'o (6):
      ext4: Allow read/only mounts with corrupted block group checksums
      ext4: Fix ext4_ext_journal_restart()
      ext4: Fix lack of credits BUG() when deleting a badly fragmented inode
      ext4: don't assume extents can't cross block groups when truncating
      ext4: Cleanup whitespace and other miscellaneous style issues
      ext4: unexport jbd2_journal_update_superblock