> 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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