[Lucid] SRU: Lucid kernel is missing a large number of important ext4 bug fixes

Wed Jun 30 15:14:52 UTC 2010

Initial test with those kernels have been looking promising, so I think this
would be ready to go to the next phase (into proposed).

Acked-by: Stefan Bader <stefan.bader at canonical.com>

On 06/22/2010 10:42 PM, Brad Figg wrote:
> BugLink: http://bugs.launchpad.net/bugs/5088069
> 
> SRU Justification
> 
> Impact:
> The following patches are heading to the stable maintainers tree and will eventually get pulled into
>   the
> Lucid tree. The earlier we can get these in the fewer issues our users will encounter. We will be getting
> these through stable-tree updates, we would just be pulling them in a little earlier.
> 
> The following patches should really be applied to the Lucid 2.6.32-22.33 kernel:
> 
> ftp://ftp.kernel.org/pub/linux/kernel/people/tytso/ext4-patches/ext4-patches-for-2.6.32.11--14.tar.gz
> 
> There is a git tree you may find useful here:
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git lucid-2.6.32-ext4
> 
> It fixes a very large number of ext4 bugs, including (but not limited to):
> 
> http://bugzilla.kernel.org/show_bug.cgi?id=14286
> http://bugzilla.kernel.org/show_bug.cgi?id=14936
> http://bugzilla.kernel.org/show_bug.cgi?id=15420
> http://bugzilla.kernel.org/show_bug.cgi?id=15579
> http://bugzilla.kernel.org/show_bug.cgi?id=13549
> http://bugzilla.kernel.org/show_bug.cgi?id=15742
> http://bugzilla.kernel.org/show_bug.cgi?id=15768
> http://bugzilla.kernel.org/show_bug.cgi?id=15792
> http://bugzilla.kernel.org/show_bug.cgi?id=15827
> 
> This patch has been submitted upstream, but I'm not sure if Greg K-H will be doing another 2.6.32.y kernel release.
> 
> Testing:
>     TBD
> 
> 
> The following changes since commit 59152141a98f95f71e8dcc505c226ceaf1c3abc7:
>    Yin Kangkai (1):
>          jbd: jbd-debug and jbd2-debug should be writable
> 
> are available in the git repository at:
> 
>    git://kernel.ubuntu.com/bradf/ubuntu-lucid lp588069
> 
> Akira Fujita (3):
>        ext4: Fix insertion point of extent in mext_insert_across_blocks()
>        ext4: Fix the NULL reference in double_down_write_data_sem()
>        ext4: Code cleanup for EXT4_IOC_MOVE_EXT ioctl
> 
> Aneesh Kumar K.V (4):
>        ext4: Ensure zeroout blocks have no dirty metadata
>        ext4: Handle -EDQUOT error on write
>        ext4: Fix quota accounting error with fallocate
>        ext4: Drop EXT4_GET_BLOCKS_UPDATE_RESERVE_SPACE flag
> 
> Ben Hutchings (2):
>        ext4: Conditionally define compat ioctl numbers
>        ext4: Fix compat EXT4_IOC_ADD_GROUP
> 
> Christian Borntraeger (1):
>        ext4: allow defrag (EXT4_IOC_MOVE_EXT) in 32bit compat mode
> 
> Curt Wohlgemuth (5):
>        ext4: Fix BUG_ON at fs/buffer.c:652 in no journal mode
>        ext4: Fix possible lost inode write in no journal mode
>        ext4: Fix buffer head leaks after calls to ext4_get_inode_loc()
>        ext4: Remove extraneous newlines in ext4_msg() calls
>        ext4: check for a good block group before loading buddy pages
> 
> Dmitry Monakhov (10):
>        ext4: fix error handling in migrate
>        ext4: explicitly remove inode from orphan list after failed direct io
>        ext4: Handle non empty on-disk orphan link
>        ext4: check missed return value in ext4_sync_file()
>        ext4: fix quota accounting in case of fallocate
>        ext4: Do not zero out uninitialized extents beyond i_size
>        ext4: clean up inode bitmaps manipulation in ext4_free_inode
>        ext4: init statistics after journal recovery
>        ext4: Use bitops to read/modify i_flags in struct ext4_inode_info
>        ext4: restart ext4_ext_remove_space() after transaction restart
> 
> Eric Sandeen (5):
>        ext4: Fixed inode allocator to correctly track a flex_bg's used_dirs
>        ext4: check s_log_groups_per_flex in online resize code
>        ext4: don't return to userspace after freezing the fs with a mutex held
>        ext4: stop issuing discards if not supported by device
>        ext4: don't scan/accumulate more pages than mballoc will allocate
> 
> Frank Mayhar (1):
>        ext4: Make fsync sync new parent directories in no-journal mode
> 
> Jan Kara (2):
>        ext4: Fix estimate of # of blocks needed to write indirect-mapped files
>        ext4: Show journal_checksum option
> 
> Jiaying Zhang (1):
>        ext4: Add flag to files with blocks intentionally past EOF
> 
> Jing Zhang (3):
>        ext4: fix memory leaks in error path handling of ext4_ext_zeroout()
>        ext4: Remove unnecessary call to ext4_get_group_desc() in mballoc
>        ext4: rename ext4_mb_release_desc() to ext4_mb_unload_buddy()
> 
> Julia Lawall (1):
>        ext4: Eliminate potential double free on error path
> 
> Nikanth Karthikesan (1):
>        ext4: Prevent creation of files larger than RLIMIT_FSIZE using fallocate
> 
> Richard Kennedy (1):
>        ext4: return correct wbc.nr_to_write in ext4_da_writepages
> 
> Surbhi Palande (1):
>        ext4: replace BUG() with return -EIO in ext4_ext_get_blocks
> 
> Tao Ma (1):
>        ext4: Fix fencepost error in chosing choosing group vs file preallocation.
> 
> Theodore Ts'o (8):
>        ext4, jbd2: Add barriers for file systems with exernal journals
>        ext4: Patch up how we claim metadata blocks for quota purposes
>        ext4: Fix accounting of reserved metadata blocks
>        ext4: Calculate metadata requirements more accurately
>        ext4: Use bitops to read/modify EXT4_I(inode)->i_state
>        ext4: Issue the discard operation *before* releasing the blocks to be reused
>        ext4: Avoid crashing on NULL ptr dereference on a filesystem error
>        ext4: Clear the EXT4_EOFBLOCKS_FL flag only when warranted
> 
> Toshiyuki Okajima (1):
>        ext4: make "offset" consistent in ext4_check_dir_entry()
> 
>   fs/ext4/dir.c          |   12 +-
>   fs/ext4/ext4.h         |  157 ++++++++++++++++++---
>   fs/ext4/ext4_extents.h |    3 +-
>   fs/ext4/ext4_jbd2.c    |    2 +-
>   fs/ext4/ext4_jbd2.h    |    6 +-
>   fs/ext4/extents.c      |  251 ++++++++++++++++++++++++++--------
>   fs/ext4/file.c         |    6 +-
>   fs/ext4/fsync.c        |   49 ++++++-
>   fs/ext4/ialloc.c       |   98 ++++++-------
>   fs/ext4/inode.c        |  365 ++++++++++++++++++++++++++++--------------------
>   fs/ext4/ioctl.c        |   37 +++++-
>   fs/ext4/mballoc.c      |  132 ++++++++++++------
>   fs/ext4/migrate.c      |   37 +++---
>   fs/ext4/move_extent.c  |   28 ++--
>   fs/ext4/namei.c        |   24 +++-
>   fs/ext4/resize.c       |    3 +-
>   fs/ext4/super.c        |   67 +++++-----
>   fs/ext4/xattr.c        |   28 ++--
>   fs/jbd2/checkpoint.c   |   15 ++
>   fs/jbd2/commit.c       |   19 ++-
>   include/linux/jbd2.h   |    1 +
>   21 files changed, 905 insertions(+), 435 deletions(-)
> 