improve the bio cloning interface v2

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Hi Jens,

this series changes the bio cloning interface to match the rest changes
to the bio allocation interface and passes the block_device and operation
to the cloning helpers.  In addition it renames the cloning helpers to
be more descriptive.

To get there it requires a bit of refactoring in the device mapper code.

Changes since v1:
 - rebased to the lastest for-5.18/block tree
 - fix a fatal double initialization in device mapper

A git tree is also available here:

    git://git.infradead.org/users/hch/block.git bio_alloc-cleanup-part2

Gitweb:

    http://git.infradead.org/users/hch/block.git/shortlog/refs/heads/bio_alloc-cleanup-part2

Diffstat:
 Documentation/block/biodoc.rst   |    5 -
 block/bio-integrity.c            |    1 
 block/bio.c                      |  106 +++++++++++++-----------
 block/blk-crypto.c               |    1 
 block/blk-mq.c                   |    4 
 block/bounce.c                   |    3 
 drivers/block/drbd/drbd_req.c    |    5 -
 drivers/block/drbd/drbd_worker.c |    4 
 drivers/block/pktcdvd.c          |    4 
 drivers/md/bcache/request.c      |    6 -
 drivers/md/dm-cache-target.c     |   26 ++----
 drivers/md/dm-crypt.c            |   11 +-
 drivers/md/dm-zoned-target.c     |    3 
 drivers/md/dm.c                  |  166 +++++++++++++--------------------------
 drivers/md/md-faulty.c           |    4 
 drivers/md/md-multipath.c        |    4 
 drivers/md/md.c                  |    5 -
 drivers/md/raid1.c               |   34 +++----
 drivers/md/raid10.c              |   16 +--
 drivers/md/raid5.c               |    4 
 fs/btrfs/extent_io.c             |    4 
 include/linux/bio.h              |    6 -
 22 files changed, 183 insertions(+), 239 deletions(-)

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