Re: [PATCH v8 00/11] fs: multigrain timestamp redux

[Randy Dunlap]

Hi Jeff,

On 9/14/24 10:07 AM, Jeff Layton wrote:
> This is a fairly small update to the v7 set. It seems to pass all of my
> testing. Again, most of the changes are in the first two patches, but
> there are some differences in the patch that adds percpu counters as
> well.
> 
> Since the report of a performance regression came just before the merge
> window, it looks like we're going to have to wait for yet another
> release, so consider this version v6.13 material.
> 
> Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
> ---

> ---
> Jeff Layton (11):
>       timekeeping: move multigrain timestamp floor handling into timekeeper
>       fs: add infrastructure for multigrain timestamps
>       fs: have setattr_copy handle multigrain timestamps appropriately
>       fs: handle delegated timestamps in setattr_copy_mgtime
>       fs: tracepoints around multigrain timestamp events
>       fs: add percpu counters for significant multigrain timestamp events
>       Documentation: add a new file documenting multigrain timestamps
>       xfs: switch to multigrain timestamps
>       ext4: switch to multigrain timestamps
>       btrfs: convert to multigrain timestamps
>       tmpfs: add support for multigrain timestamps
> 
>  Documentation/filesystems/index.rst         |   1 +
>  Documentation/filesystems/multigrain-ts.rst | 121 ++++++++++++
>  fs/attr.c                                   |  60 +++++-
>  fs/btrfs/file.c                             |  25 +--
>  fs/btrfs/super.c                            |   3 +-
>  fs/ext4/super.c                             |   2 +-
>  fs/inode.c                                  | 278 +++++++++++++++++++++++++---
>  fs/stat.c                                   |  42 ++++-
>  fs/xfs/libxfs/xfs_trans_inode.c             |   6 +-
>  fs/xfs/xfs_iops.c                           |  10 +-
>  fs/xfs/xfs_super.c                          |   2 +-
>  include/linux/fs.h                          |  36 +++-
>  include/linux/timekeeping.h                 |   5 +
>  include/trace/events/timestamp.h            | 124 +++++++++++++
>  kernel/time/timekeeping.c                   |  83 +++++++++
>  kernel/time/timekeeping_debug.c             |  12 ++
>  kernel/time/timekeeping_internal.h          |   3 +
>  mm/shmem.c                                  |   2 +-
>  18 files changed, 742 insertions(+), 73 deletions(-)
> ---
> base-commit: da3ea35007d0af457a0afc87e84fddaebc4e0b63

IME it would be better to make this series apply to linux-next-($latest)
instead of base mainline Linux. for integration reasons.

You can add

Tested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> # documentation bits

for all patches if you want to.


> change-id: 20240913-mgtime-20c98bcda88e
> 
> Best regards,