[PATCH v2 0/5] md: bitmap grow fixes

Hi, This v2 series is to fixes bugs exposed by mdadm/clustermd-autotest.
The bugs are not cluster md only but also bitmap related.

The series based on v7.0-rc7 passes tests with mdadm v4.6 without regression.  

v2:
    Add a dummy bitmap operations per Kuai's suggestion.

To Yu Kuai:
A NULL group can't used for internal_bitmap_group since
the entries from internal_bitmap_attrs should be under bitmap.
So instead of sysfs_create_groups(), sysfs_create_group() and sysfs_merge_group()
are still needed /sigh.

Su Yue (5):
  md/md-bitmap: call md_bitmap_create,destroy in location_store
  md/md-bitmap: add an extra sysfs argument to md_bitmap_create and
    destroy
  md/md-bitmap: add dummy bitmap ops for none to fix wrong bitmap offset
  md: skip ID_BITMAP_NONE when show available bitmap types
  md/md-bitmap: remove member group from bitmap_operations

 drivers/md/md-bitmap.c   | 121 ++++++++++++++++++++++++++++++++++++---
 drivers/md/md-bitmap.h   |   3 +-
 drivers/md/md-llbitmap.c |  13 ++++-
 drivers/md/md.c          |  55 +++++++++---------
 drivers/md/md.h          |   2 +
 5 files changed, 155 insertions(+), 39 deletions(-)

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2.53.0