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    Subjectbdi cleanups v3
    Date
    Hi Jens,

    this series contains a bunch of different BDI cleanups. The biggest item
    is to isolate block drivers from the BDI in preparation of changing the
    lifetime of the block device BDI in a follow up series.


    Changes since v2:
    - fix a rw_page return value check
    - fix various changelogs

    Changes since v1:
    - rebased to the for-5.9/block-merge branch
    - explicitly set the readahead to 0 for ubifs, vboxsf and mtd
    - split the zram block_device operations
    - let rw_page users fall back to bios in swap_readpage


    Diffstat:
    block/blk-core.c | 2
    block/blk-integrity.c | 4
    block/blk-mq-debugfs.c | 1
    block/blk-settings.c | 5
    block/blk-sysfs.c | 282 ++++++++++--------------------------------
    block/genhd.c | 13 +
    drivers/block/aoe/aoeblk.c | 2
    drivers/block/brd.c | 1
    drivers/block/drbd/drbd_nl.c | 18 --
    drivers/block/drbd/drbd_req.c | 4
    drivers/block/rbd.c | 2
    drivers/block/zram/zram_drv.c | 19 +-
    drivers/md/bcache/super.c | 4
    drivers/md/dm-table.c | 9 -
    drivers/md/raid0.c | 16 --
    drivers/md/raid10.c | 46 ++----
    drivers/md/raid5.c | 31 +---
    drivers/mmc/core/queue.c | 3
    drivers/mtd/mtdcore.c | 1
    drivers/nvdimm/btt.c | 2
    drivers/nvdimm/pmem.c | 1
    drivers/nvme/host/core.c | 3
    drivers/nvme/host/multipath.c | 10 -
    drivers/scsi/iscsi_tcp.c | 4
    fs/9p/vfs_file.c | 2
    fs/9p/vfs_super.c | 4
    fs/afs/super.c | 1
    fs/btrfs/disk-io.c | 2
    fs/fs-writeback.c | 7 -
    fs/fuse/inode.c | 4
    fs/namei.c | 4
    fs/nfs/super.c | 9 -
    fs/super.c | 2
    fs/ubifs/super.c | 1
    fs/vboxsf/super.c | 1
    include/linux/backing-dev.h | 78 +----------
    include/linux/blkdev.h | 3
    include/linux/drbd.h | 1
    include/linux/fs.h | 2
    mm/backing-dev.c | 12 -
    mm/filemap.c | 4
    mm/memcontrol.c | 2
    mm/memory-failure.c | 2
    mm/migrate.c | 2
    mm/mmap.c | 2
    mm/page-writeback.c | 18 +-
    mm/page_io.c | 18 +-
    mm/swapfile.c | 4
    48 files changed, 204 insertions(+), 464 deletions(-)

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