[GIT PULL] nilfs2 update for 2.6.31 merge window

[Ryusuke Konishi]

Hi Linus,

please pull from

 git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2.git for-linus

to receive updates of nilfs:

 * Clean-ups of b-tree/block-mapping code
 * Several read performance tuning
 * Error code fix on snapshot delete request
 * Enhance forward compatibility in get-information ioctl commands
 * Clean-ups of removal list of segments
 * A correction in nilfs2.txt

The following changes since commit 07a2039b8eb0af4ff464efd3dfd95de5c02648c6
 Linus Torvalds (1):
      Linux 2.6.30

Hisashi Hifumi (1):
      NILFS2: Pagecache usage optimization on NILFS2

Ryusuke Konishi (21):
      nilfs2: remove nilfs_dat_prepare_free function
      nilfs2: unify bmap operations starting use of indirect block address
      nilfs2: add sufile function that can modify multiple segment usages
      nilfs2: eliminate removal list of segments
      nilfs2: remove header file for segment list operations
      nilfs2: remove nilfs_bmap_put_block
      nilfs2: remove nilfs_bmap_delete_block
      nilfs2: move get block functions in bmap.c into btree codes
      nilfs2: remove pointless NULL check of bpop_commit_alloc_ptr function
      nilfs2: remove useless b_low and b_high fields from nilfs_bmap struct
      nilfs2: remove bmap pointer operations
      nilfs2: remove nilfs_direct_operations from direct mapping
      nilfs2: remove nilfs_btree_operations from btree mapping
      nilfs2: allow future expansion of metadata read out via get info ioctl
      nilfs2: set bio unplug flag for the last bio in segment
      nilfs2: enable sync_page method
      nilfs2: modify list of unsupported features in caveats
      nilfs2: return EBUSY against delete request on snapshot
      nilfs2: use device's backing_dev_info for btree node caches
      nilfs2: add sync_page method to page caches of meta data
      nilfs2: support contiguous lookup of blocks

 Documentation/filesystems/nilfs2.txt |    5 +-
 fs/nilfs2/bmap.c                     |  272 +++++++------------------
 fs/nilfs2/bmap.h                     |  135 ++++++++-----
 fs/nilfs2/btnode.c                   |    9 +-
 fs/nilfs2/btnode.h                   |    2 +-
 fs/nilfs2/btree.c                    |  366 +++++++++++++++++++---------------
 fs/nilfs2/btree.h                    |   31 +---
 fs/nilfs2/cpfile.c                   |   47 ++---
 fs/nilfs2/cpfile.h                   |    4 +-
 fs/nilfs2/dat.c                      |   36 +---
 fs/nilfs2/dat.h                      |    2 +-
 fs/nilfs2/direct.c                   |  139 +++++++-------
 fs/nilfs2/direct.h                   |   20 +--
 fs/nilfs2/gcinode.c                  |    5 +-
 fs/nilfs2/inode.c                    |   18 +-
 fs/nilfs2/ioctl.c                    |   35 +---
 fs/nilfs2/mdt.c                      |    3 +-
 fs/nilfs2/nilfs.h                    |    1 +
 fs/nilfs2/recovery.c                 |   37 +++--
 fs/nilfs2/segbuf.c                   |    3 +-
 fs/nilfs2/seglist.h                  |   85 --------
 fs/nilfs2/segment.c                  |  130 ++++---------
 fs/nilfs2/segment.h                  |   12 +-
 fs/nilfs2/sufile.c                   |  119 ++++++++++-
 fs/nilfs2/sufile.h                   |   62 ++++--
 fs/nilfs2/super.c                    |    9 +-
 fs/nilfs2/the_nilfs.c                |    1 -
 27 files changed, 727 insertions(+), 861 deletions(-)
 delete mode 100644 fs/nilfs2/seglist.h

Thanks,
Ryusuke Konishi
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