Re: [PATCH 0/7] ext4 fast-commit fixes

[Eric Biggers <ebiggers@kernel.org>]

On Sun, Nov 06, 2022 at 02:48:34PM -0800, Eric Biggers wrote:
> 
> This series fixes several bugs in the fast-commit feature.
> 
> Patch 6 may be the most controversial patch of this series, since it
> would make old kernels unable to replay fast-commit journals created by
> new kernels.  I'd appreciate any thoughts on whether that's okay.  I can
> drop that patch if needed.
> 
> I've tested that this series doesn't introduce any regressions with
> 'gce-xfstests -c ext4/fast_commit -g auto'.  Note that ext4/039,
> ext4/053, and generic/475 fail both before and after.
> 
> Eric Biggers (7):
>   ext4: disable fast-commit of encrypted dir operations
>   ext4: don't set up encryption key during jbd2 transaction
>   ext4: fix leaking uninitialized memory in fast-commit journal
>   ext4: add missing validation of fast-commit record lengths
>   ext4: fix unaligned memory access in ext4_fc_reserve_space()
>   ext4: fix off-by-one errors in fast-commit block filling
>   ext4: simplify fast-commit CRC calculation
> 
>  fs/ext4/ext4.h              |   4 +-
>  fs/ext4/fast_commit.c       | 203 ++++++++++++++++++------------------
>  fs/ext4/fast_commit.h       |   3 +-
>  fs/ext4/namei.c             |  44 ++++----
>  include/trace/events/ext4.h |   7 +-
>  5 files changed, 132 insertions(+), 129 deletions(-)
> 
> 
> base-commit: 089d1c31224e6b266ece3ee555a3ea2c9acbe5c2

Any thoughts on this patch series?

- Eric