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Date:	Tue, 16 Oct 2007 21:51:39 -0700 (PDT)
From:	david@...g.hm
To:	"Theodore Ts'o" <tytso@....edu>
cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [GIT PULL] ext4 update

On Wed, 17 Oct 2007, Theodore Ts'o wrote:

> Hi Linus,
>
> Please pull from:
>
>        git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git for_linus
>
> It has a number random cleanups and bug fixes, and two new features.
> The first is uninitialized block groups, which allows fast mke2fs
> operations plus as well as speeding up e2fsck by allowing it to skip
> parts of the inode tables that haven't been used yet.

nice feature, is there any work on a tool to go through a well-used 
filesystem and mark unused block groups as uninitialized? (I would guess 
that such a tool may want to move files to make this so)

David Lang

>   A checksum has
> been added to block group descriptors so we can tell detect corruption
> in that data structure, since we are depending on it being accurate so
> we know what portion of the inode table is really in use.
>
> The second feature is flexible block groups, which allows inode tables
> and block/inode bitmaps to be grouped together outside of the block
> group that they administer, to allow contiguous regions of data blocks
> to span multiple block groups, which helps for large files significantly
> bigger than the size of a block group (i.e., 32 gigabytes on a 4k block
> filesystem).
>
> All of these patches have been baking in -mm for a while.
>
> Regards,
>
> 							- Ted
>
> Andreas Dilger (1):
>      Ext4: Uninitialized Block Groups
>
> Aneesh Kumar K.V (8):
>      ext4: Fix sparse warnings
>      ext4: Convert bg_block_bitmap to bg_block_bitmap_lo
>      ext4: Convert bg_inode_bitmap and bg_inode_table
>      ext4: Convert s_blocks_count to s_blocks_count_lo
>      ext4: Convert s_r_blocks_count and s_free_blocks_count
>      ext4: Convert ext4_extent.ee_start to ext4_extent.ee_start_lo
>      ext4: Convert ext4_extent_idx.ei_leaf to ext4_extent_idx.ei_leaf_lo
>      ext4: sparse fixes
>
> Coly Li (1):
>      ext4: Remove (partial, never completed) fragment support
>
> Eric Sandeen (3):
>      ext4: remove #ifdef CONFIG_EXT4_INDEX
>      ext4: fix setup_new_group_blocks locking
>      ext4: lighten up resize transaction requirements
>
> Jan Kara (1):
>      jbd2: fix commit code to properly abort journal
>
> Jose R. Santos (2):
>      JBD2: debug code cleanup.
>      ext4: FLEX_BG Kernel support v2.
>
> Mingming Cao (6):
>      JBD: JBD slab allocation cleanups
>      JBD2: jbd2 slab allocation cleanups
>      JBD: replace jbd_kmalloc with kmalloc directly
>      JBD2: replace jbd_kmalloc with kmalloc directly.
>      JBD2/Ext4: Convert kmalloc to kzalloc in jbd2/ext4
>      jbd2: JBD_XXX to JBD2_XXX naming cleanup
>
> fs/Kconfig                      |    1 +
> fs/ext4/balloc.c                |  112 ++++++++++++++++++++++++++++-
> fs/ext4/dir.c                   |    7 --
> fs/ext4/extents.c               |   14 ++--
> fs/ext4/fsync.c                 |    2 +-
> fs/ext4/group.h                 |   27 +++++++
> fs/ext4/ialloc.c                |  151 +++++++++++++++++++++++++++++++++++----
> fs/ext4/inode.c                 |   18 ++----
> fs/ext4/namei.c                 |   20 -----
> fs/ext4/resize.c                |   59 +++++++++++-----
> fs/ext4/super.c                 |   97 +++++++++++++++++--------
> fs/ext4/xattr.c                 |    7 +-
> fs/jbd/commit.c                 |    6 +-
> fs/jbd/journal.c                |   99 ++------------------------
> fs/jbd/transaction.c            |   12 ++--
> fs/jbd2/commit.c                |   16 ++--
> fs/jbd2/journal.c               |  128 ++++-----------------------------
> fs/jbd2/recovery.c              |    2 +-
> fs/jbd2/revoke.c                |    4 +-
> fs/jbd2/transaction.c           |   19 +++---
> include/linux/ext4_fs.h         |  103 ++++++++++----------------
> include/linux/ext4_fs_extents.h |    4 +-
> include/linux/ext4_fs_i.h       |    5 --
> include/linux/ext4_fs_sb.h      |    3 -
> include/linux/ext4_jbd2.h       |    6 +-
> include/linux/jbd.h             |   17 +++--
> include/linux/jbd2.h            |   49 +++++++------
> include/linux/poison.h          |    3 +-
> 28 files changed, 527 insertions(+), 464 deletions(-)
> create mode 100644 fs/ext4/group.h
> -
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