convert newly added dm-zone code to the atomic queue commit API v2

[Christoph Hellwig <hch@lst.de>]

Hi all,

the new dm-zone code added by Damien in 6.10-rc directly modifies the
queue limits instead of using the commit-style API that dm has used
forever and that the block layer adopted now, and thus can only run
after all the other changes have been commited.  This is quite a land
mine and can be easily fixed.

Mike said he's fine with merging this through the block tree as the
dm-zone changes came in through that.

Changes since v1:
 - fix an error return
 - remove a superflous queue_limits_update_cancel call

Diffstat:
 dm-table.c |   15 +++++-------
 dm-zone.c  |   72 +++++++++++++++++++++++++++----------------------------------
 dm.h       |    3 +-
 3 files changed, 41 insertions(+), 49 deletions(-)