[GIT PULL] ocfs2 changes for 2.6.32

[Joel Becker <Joel.Becker@oracle.com>]

Linus, et al,
	Here are the ocfs2 feature changes for 2.6.32.  The big ticket
item is the reflinkat(2) system call and ocfs2's support for it.  The
ocfs2 support accounts for all but a handful of the changes.  The
remaining few patches are fixes.
	Please pull.

Joel

The following changes since commit 8379e7c46cc48f51197dd663fc6676f47f2a1e71:
  Sunil Mushran (1):
        ocfs2: ocfs2_write_begin_nolock() should handle len=0

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2.git upstream-linus

Coly Li (1):
      dlmglue.c: add missed mlog lines

Joel Becker (41):
      ocfs2: Make the ocfs2_caching_info structure self-contained.
      ocfs2: Change metadata caching locks to an operations structure.
      ocfs2: Take the inode out of the metadata read/write paths.
      ocfs2: move ip_last_trans to struct ocfs2_caching_info
      ocfs2: move ip_created_trans to struct ocfs2_caching_info
      ocfs2: Pass struct ocfs2_caching_info to the journal functions.
      ocfs2: Store the ocfs2_caching_info on ocfs2_extent_tree.
      ocfs2: Pass ocfs2_caching_info to ocfs2_read_extent_block().
      ocfs2: ocfs2_find_path() only needs the caching info
      ocfs2: ocfs2_create_new_meta_bhs() doesn't need struct inode.
      ocfs2: Pass ocfs2_extent_tree to ocfs2_unlink_path()
      ocfs2: ocfs2_complete_edge_insert() doesn't need struct inode at all.
      ocfs2: Get inode out of ocfs2_rotate_subtree_root_right().
      ocfs2: Pass ocfs2_extent_tree to ocfs2_get_subtree_root()
      ocfs2: Drop struct inode from ocfs2_extent_tree_operations.
      ocfs2: ocfs2_rotate_tree_right() doesn't need struct inode.
      ocfs2: ocfs2_update_edge_lengths() doesn't need struct inode.
      ocfs2: ocfs2_rotate_subtree_left() doesn't need struct inode.
      ocfs2: __ocfs2_rotate_tree_left() doesn't need struct inode.
      ocfs2: ocfs2_rotate_tree_left() no longer needs struct inode.
      ocfs2: ocfs2_merge_rec_left/right() no longer need struct inode.
      ocfs2: ocfs2_try_to_merge_extent() doesn't need struct inode.
      ocfs2: ocfs2_grow_branch() and ocfs2_append_rec_to_path() lose struct inode.
      ocfs2: ocfs2_truncate_rec() doesn't need struct inode.
      ocfs2: Make truncating the extent map an extent_tree_operation.
      ocfs2: ocfs2_insert_at_leaf() doesn't need struct inode.
      ocfs2: Give ocfs2_split_record() an extent_tree instead of an inode.
      ocfs2: ocfs2_do_insert_extent() and ocfs2_insert_path() no longer need an inode.
      ocfs2: ocfs2_extent_contig() only requires the superblock.
      ocfs2: Swap inode for extent_tree in ocfs2_figure_merge_contig_type().
      ocfs2: Remove inode from ocfs2_figure_extent_contig().
      ocfs2: ocfs2_figure_insert_type() no longer needs struct inode.
      ocfs2: Make extent map insertion an extent_tree_operation.
      ocfs2: ocfs2_insert_extent() no longer needs struct inode.
      ocfs2: ocfs2_add_clusters_in_btree() no longer needs struct inode.
      ocfs2: ocfs2_remove_extent() no longer needs struct inode.
      ocfs2: ocfs2_split_and_insert() no longer needs struct inode.
      ocfs2: Teach ocfs2_replace_extent_rec() to use an extent_tree.
      ocfs2: __ocfs2_mark_extent_written() doesn't need struct inode.
      ocfs2: Pass ocfs2_caching_info into ocfs_init_*_extent_tree().
      fs: Add the reflink() operation and reflinkat(2) system call.

Sunil Mushran (1):
      ocfs2: __ocfs2_abort() should not enable panic for local mounts

Tao Ma (42):
      ocfs2: Define refcount tree structure.
      ocfs2: Add metaecc for ocfs2_refcount_block.
      ocfs2: Add ocfs2_read_refcount_block.
      ocfs2: Abstract caching info checkpoint.
      ocfs2: Add new refcount tree lock resource in dlmglue.
      ocfs2: Add caching info for refcount tree.
      ocfs2: Add refcount tree lock mechanism.
      ocfs2: Basic tree root operation.
      ocfs2: Wrap ocfs2_extent_contig in ocfs2_extent_tree.
      ocfs2: Abstract extent split process.
      ocfs2: Add refcount b-tree as a new extent tree.
      ocfs2: move tree path functions to alloc.h.
      ocfs2: Add support for incrementing refcount in the tree.
      ocfs2: Add support of decrementing refcount for delete.
      ocfs2: Add functions for extents refcounted.
      ocfs2: Decrement refcount when truncating refcounted extents.
      ocfs2: Add CoW support.
      ocfs2: CoW refcount tree improvement.
      ocfs2: Integrate CoW in file write.
      ocfs2: CoW a reflinked cluster when it is truncated.
      ocfs2: Add normal functions for reflink a normal file's extents.
      ocfs2: handle file attributes issue for reflink.
      ocfs2: Return extent flags for xattr value tree.
      ocfs2: Abstract duplicate clusters process in CoW.
      ocfs2: Add CoW support for xattr.
      ocfs2: Remove inode from ocfs2_xattr_bucket_get_name_value.
      ocfs2: Abstract the creation of xattr block.
      ocfs2: Abstract ocfs2 xattr tree extend rec iteration process.
      ocfs2: Attach xattr clusters to refcount tree.
      ocfs2: Call refcount tree remove process properly.
      ocfs2: Create an xattr indexed block if needed.
      ocfs2: Add reflink support for xattr.
      ocfs2: Modify removing xattr process for refcount.
      ocfs2: Don't merge in 1st refcount ops of reflink.
      ocfs2: Make transaction extend more efficient.
      ocfs2: Use proper parameter for some inode operation.
      ocfs2: Create reflinked file in orphan dir.
      ocfs2: Add preserve to reflink.
      ocfs2: Implement ocfs2_reflink.
      ocfs2: Enable refcount tree support.
      ocfs2: Add ioctl for reflink.
      ocfs2: Use buffer IO if we are appending a file.

Wengang Wang (1):
      ocfs2: add spinlock protection when dealing with lockres->purge.

 Documentation/filesystems/reflink.txt |  174 ++
 Documentation/filesystems/vfs.txt     |    4 +
 arch/x86/ia32/ia32entry.S             |    1 +
 arch/x86/include/asm/unistd_32.h      |    1 +
 arch/x86/include/asm/unistd_64.h      |    2 +
 arch/x86/kernel/syscall_table_32.S    |    1 +
 fs/namei.c                            |  137 ++
 fs/ocfs2/Makefile                     |    1 +
 fs/ocfs2/alloc.c                      | 1342 ++++++-----
 fs/ocfs2/alloc.h                      |  101 +-
 fs/ocfs2/aops.c                       |   37 +-
 fs/ocfs2/aops.h                       |    2 +
 fs/ocfs2/buffer_head_io.c             |   47 +-
 fs/ocfs2/buffer_head_io.h             |    8 +-
 fs/ocfs2/cluster/masklog.c            |    1 +
 fs/ocfs2/cluster/masklog.h            |    1 +
 fs/ocfs2/dir.c                        |  107 +-
 fs/ocfs2/dlm/dlmthread.c              |    6 +-
 fs/ocfs2/dlmglue.c                    |  105 +-
 fs/ocfs2/dlmglue.h                    |    6 +
 fs/ocfs2/extent_map.c                 |   33 +-
 fs/ocfs2/extent_map.h                 |    8 +-
 fs/ocfs2/file.c                       |  151 ++-
 fs/ocfs2/file.h                       |    2 +
 fs/ocfs2/inode.c                      |   86 +-
 fs/ocfs2/inode.h                      |   20 +-
 fs/ocfs2/ioctl.c                      |   14 +
 fs/ocfs2/journal.c                    |   82 +-
 fs/ocfs2/journal.h                    |   94 +-
 fs/ocfs2/localalloc.c                 |   12 +-
 fs/ocfs2/namei.c                      |  343 +++-
 fs/ocfs2/namei.h                      |    6 +
 fs/ocfs2/ocfs2.h                      |   52 +-
 fs/ocfs2/ocfs2_fs.h                   |  107 +-
 fs/ocfs2/ocfs2_lockid.h               |    5 +
 fs/ocfs2/quota_global.c               |    5 +-
 fs/ocfs2/quota_local.c                |   26 +-
 fs/ocfs2/refcounttree.c               | 4249 +++++++++++++++++++++++++++++++++
 fs/ocfs2/refcounttree.h               |  108 +
 fs/ocfs2/resize.c                     |   16 +-
 fs/ocfs2/slot_map.c                   |   10 +-
 fs/ocfs2/suballoc.c                   |   35 +-
 fs/ocfs2/super.c                      |   13 +-
 fs/ocfs2/uptodate.c                   |  265 ++-
 fs/ocfs2/uptodate.h                   |   51 +-
 fs/ocfs2/xattr.c                      | 2056 +++++++++++++++--
 fs/ocfs2/xattr.h                      |   15 +-
 include/linux/fcntl.h                 |    8 +
 include/linux/fs.h                    |    2 +
 include/linux/security.h              |   23 +
 include/linux/syscalls.h              |    3 +
 security/capability.c                 |    7 +
 security/security.c                   |    8 +
 53 files changed, 8823 insertions(+), 1176 deletions(-)
 create mode 100644 Documentation/filesystems/reflink.txt
 create mode 100644 fs/ocfs2/refcounttree.c
 create mode 100644 fs/ocfs2/refcounttree.h
-- 

Life's Little Instruction Book #99

	"Think big thoughts, but relish small pleasures."

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127