Re: [PATCH v3 00/19] Delayed Attributes

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On 9/16/19 5:27 AM, Brian Foster wrote:
On Thu, Sep 05, 2019 at 03:18:18PM -0700, Allison Collins wrote:
Hi all,

This set is a subset of a larger series for parent pointers.
Delayed attributes allow attribute operations (set and remove) to be
logged and committed in the same way that other delayed operations do.
This will help break up more complex operations when we later introduce
parent pointers which can be used in a number of optimizations.  Since
delayed attributes can be implemented as a stand alone feature, I've
decided to subdivide the set to help make it more manageable.  Delayed
attributes may also provide the infastructure to later break up large
attributes into smaller transactions instead of one large bwrite.

Changes since v2:
Mostly review updates collected since v2.  Patch 17 is new and adds a
new feature bit that is enabled through mkfs.xfs -n delattr.  Attr
renames have been simplified into separate remove and set opertaions
which removes the need for the INCOMPLETE state used in non delayed
operations

I've also made the corresponding updates to the user space side, and
xfstests as well.

Question, comment and feedback appreciated!

Thanks all!
Allison

Allison Collins (15):
   xfs: Replace attribute parameters with struct xfs_name

Hi Allison,

The first patch in the series doesn't apply to current for-next or
master. What is the baseline for this series? Perhaps a rebase is in
order..?

Brian

The base line for the kernel space set is:
eb77b23 xfs: add a xfs_valid_startblock helper

And the user space set is:
e74aec5 xfsprogs: Release v5.3.0-rc1

And xfstests:
cda9817 common/quota: enable project quota correctly on f2fs

Yes, the for-next's may have advanced a bit since, so I'll need to update it. Sometimes stuff moves so fast, by the time I've worked through all the conflicts, there's a new for-next already! I kind of figured though that people are still sort of settling on what they want the design to even look like, especially WRT to the *_later routines which are sort of complicated. So I haven't been too worried about it since rebasing is mostly just mechanical adjustments, and it could be the next review may take the design in a different direction anyway.

For now though, please use those baselines if you want to apply the sets. I will work on getting the bases updated.

Thanks!

Allison


   xfs: Embed struct xfs_name in xfs_da_args
   xfs: Add xfs_dabuf defines
   xfs: Factor out new helper functions xfs_attr_rmtval_set
   xfs: Factor up trans handling in xfs_attr3_leaf_flipflags
   xfs: Factor out xfs_attr_leaf_addname helper
   xfs: Factor up commit from xfs_attr_try_sf_addname
   xfs: Factor up trans roll from xfs_attr3_leaf_setflag
   xfs: Add xfs_attr3_leaf helper functions
   xfs: Factor out xfs_attr_rmtval_invalidate
   xfs: Factor up trans roll in xfs_attr3_leaf_clearflag
   xfs: Add delay context to xfs_da_args
   xfs: Add delayed attribute routines
   xfs: Add feature bit XFS_SB_FEAT_INCOMPAT_LOG_DELATTR
   xfs: Enable delayed attributes

Allison Henderson (4):
   xfs: Add xfs_has_attr and subroutines
   xfs: Set up infastructure for deferred attribute operations
   xfs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred
   xfs_io: Add delayed attributes error tag

  fs/xfs/Makefile                 |    2 +-
  fs/xfs/libxfs/xfs_attr.c        | 1068 ++++++++++++++++++++++++++++++++++-----
  fs/xfs/libxfs/xfs_attr.h        |   53 +-
  fs/xfs/libxfs/xfs_attr_leaf.c   |  277 ++++++----
  fs/xfs/libxfs/xfs_attr_leaf.h   |    7 +
  fs/xfs/libxfs/xfs_attr_remote.c |  103 +++-
  fs/xfs/libxfs/xfs_attr_remote.h |    4 +-
  fs/xfs/libxfs/xfs_da_btree.c    |    8 +-
  fs/xfs/libxfs/xfs_da_btree.h    |   27 +-
  fs/xfs/libxfs/xfs_defer.c       |    1 +
  fs/xfs/libxfs/xfs_defer.h       |    3 +
  fs/xfs/libxfs/xfs_dir2.c        |   22 +-
  fs/xfs/libxfs/xfs_dir2_block.c  |    6 +-
  fs/xfs/libxfs/xfs_dir2_leaf.c   |    6 +-
  fs/xfs/libxfs/xfs_dir2_node.c   |    8 +-
  fs/xfs/libxfs/xfs_dir2_sf.c     |   30 +-
  fs/xfs/libxfs/xfs_errortag.h    |    4 +-
  fs/xfs/libxfs/xfs_format.h      |   11 +-
  fs/xfs/libxfs/xfs_fs.h          |    1 +
  fs/xfs/libxfs/xfs_log_format.h  |   44 +-
  fs/xfs/libxfs/xfs_sb.c          |    2 +
  fs/xfs/libxfs/xfs_types.h       |    1 +
  fs/xfs/scrub/attr.c             |   12 +-
  fs/xfs/scrub/common.c           |    2 +
  fs/xfs/xfs_acl.c                |   29 +-
  fs/xfs/xfs_attr_item.c          |  764 ++++++++++++++++++++++++++++
  fs/xfs/xfs_attr_item.h          |   88 ++++
  fs/xfs/xfs_attr_list.c          |    1 +
  fs/xfs/xfs_error.c              |    3 +
  fs/xfs/xfs_ioctl.c              |   30 +-
  fs/xfs/xfs_ioctl32.c            |    2 +
  fs/xfs/xfs_iops.c               |   14 +-
  fs/xfs/xfs_log.c                |    4 +
  fs/xfs/xfs_log_recover.c        |  173 +++++++
  fs/xfs/xfs_ondisk.h             |    2 +
  fs/xfs/xfs_super.c              |    4 +
  fs/xfs/xfs_trace.h              |   20 +-
  fs/xfs/xfs_trans.h              |    1 -
  fs/xfs/xfs_xattr.c              |   31 +-
  39 files changed, 2509 insertions(+), 359 deletions(-)
  create mode 100644 fs/xfs/xfs_attr_item.c
  create mode 100644 fs/xfs/xfs_attr_item.h

--
2.7.4




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