Block fixes for 5.12-rc5

Hi Linus,

- Fix regression from this merge window with the xarray partition change, which allowed partition counts that overflow the u8 that holds the partition number (Ming)

- Fix zone append warning (Johannes)

- Segmentation count fix for multipage bvecs (David)

- Partition scan fix (Chris)

Please pull!

The following changes since commit d38b4d289486daee01c1fdf056b46b7cdfe72e9e:

Merge tag 'nvme-5.12-20210319' of git://git.infradead.org/nvme into block-5.12 (2021-03-19 06:40:47 -0600)

are available in the Git repository at:

git://git.kernel.dk/linux-block.git tags/block-5.12-2021-03-27

for you to fetch changes up to e82fc7855749aa197740a60ef22c492c41ea5d5f:

block: don't create too many partitions (2021-03-27 09:22:18 -0600)

----------------------------------------------------------------
block-5.12-2021-03-27

----------------------------------------------------------------
Chris Chiu (1):
block: clear GD_NEED_PART_SCAN later in bdev_disk_changed

David Jeffery (1):
block: recalculate segment count for multi-segment discards correctly

Johannes Thumshirn (1):
block: support zone append bvecs

Ming Lei (1):
block: don't create too many partitions

 block/bio.c             | 21 ++++++++++++++++++---
 block/blk-merge.c       |  8 ++++++++
 block/partitions/core.c |  7 +++++++
 fs/block_dev.c          |  4 ++--
 4 files changed, 35 insertions(+), 5 deletions(-)

Jens Axboe