move features flags into queue_limits v2

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Hi all,

this is the third and last major series to convert settings to
queue_limits for this merge window.  After a bunch of prep patches to
get various drivers in shape, it moves all the queue_flags that specify
driver controlled features into the queue limits so that they can be
set atomically and are separated from the blk-mq internal flags.

Note that I've only Cc'ed the maintainers for drivers with non-mechanical
changes as the Cc list is already huge.

This series sits on top of the for-6.11/block-limits branch.

A git tree is available here:

    git://git.infradead.org/users/hch/block.git block-limit-flags

Gitweb:

    http://git.infradead.org/?p=users/hch/block.git;a=shortlog;h=refs/heads/block-limit-flags


Changes since v1:
 - fix an inverted condition
 - fix the runtime flush disable in xen-blkfront
 - remove sd_is_zoned entirely
 - use SECTOR_SIZE in a few more places
 - fix REQ_NOWAIT disabling for dm targets that don't support it
 - fix typos
 - reword various commit logs

Diffstat:
 Documentation/block/writeback_cache_control.rst |   67 ++++----
 arch/m68k/emu/nfblock.c                         |    1 
 arch/um/drivers/ubd_kern.c                      |    3 
 arch/xtensa/platforms/iss/simdisk.c             |    5 
 block/blk-core.c                                |    7 
 block/blk-flush.c                               |   36 ++--
 block/blk-mq-debugfs.c                          |   13 -
 block/blk-mq.c                                  |   42 +++--
 block/blk-settings.c                            |   46 ++----
 block/blk-sysfs.c                               |  118 ++++++++-------
 block/blk-wbt.c                                 |    4 
 block/blk.h                                     |    2 
 drivers/block/amiflop.c                         |    5 
 drivers/block/aoe/aoeblk.c                      |    1 
 drivers/block/ataflop.c                         |    5 
 drivers/block/brd.c                             |    6 
 drivers/block/drbd/drbd_main.c                  |    6 
 drivers/block/floppy.c                          |    3 
 drivers/block/loop.c                            |   79 ++++------
 drivers/block/mtip32xx/mtip32xx.c               |    2 
 drivers/block/n64cart.c                         |    2 
 drivers/block/nbd.c                             |   24 +--
 drivers/block/null_blk/main.c                   |   13 -
 drivers/block/null_blk/zoned.c                  |    3 
 drivers/block/pktcdvd.c                         |    1 
 drivers/block/ps3disk.c                         |    8 -
 drivers/block/rbd.c                             |   12 -
 drivers/block/rnbd/rnbd-clt.c                   |   14 -
 drivers/block/sunvdc.c                          |    1 
 drivers/block/swim.c                            |    5 
 drivers/block/swim3.c                           |    5 
 drivers/block/ublk_drv.c                        |   21 +-
 drivers/block/virtio_blk.c                      |   37 ++--
 drivers/block/xen-blkfront.c                    |   53 +++---
 drivers/block/zram/zram_drv.c                   |    6 
 drivers/cdrom/gdrom.c                           |    1 
 drivers/md/bcache/super.c                       |    9 -
 drivers/md/dm-table.c                           |  183 +++++-------------------
 drivers/md/dm-zone.c                            |    2 
 drivers/md/dm-zoned-target.c                    |    2 
 drivers/md/dm.c                                 |   13 -
 drivers/md/md.c                                 |   40 -----
 drivers/md/raid5.c                              |    6 
 drivers/mmc/core/block.c                        |   42 ++---
 drivers/mmc/core/queue.c                        |   20 +-
 drivers/mmc/core/queue.h                        |    3 
 drivers/mtd/mtd_blkdevs.c                       |    9 -
 drivers/nvdimm/btt.c                            |    4 
 drivers/nvdimm/pmem.c                           |   14 -
 drivers/nvme/host/core.c                        |   33 ++--
 drivers/nvme/host/multipath.c                   |   24 ---
 drivers/nvme/host/zns.c                         |    3 
 drivers/s390/block/dasd_genhd.c                 |    1 
 drivers/s390/block/dcssblk.c                    |    2 
 drivers/s390/block/scm_blk.c                    |    5 
 drivers/scsi/iscsi_tcp.c                        |    8 -
 drivers/scsi/scsi_lib.c                         |    5 
 drivers/scsi/sd.c                               |   66 +++-----
 drivers/scsi/sd.h                               |    5 
 drivers/scsi/sd_zbc.c                           |   25 +--
 include/linux/blkdev.h                          |  119 ++++++++++-----
 61 files changed, 572 insertions(+), 728 deletions(-)




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