linux-ext4 - futher decouple DAX from block devices

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Date:   Mon, 18 Oct 2021 06:40:43 +0200
From:   Christoph Hellwig <hch@....de>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Mike Snitzer <snitzer@...hat.com>,
        Ira Weiny <ira.weiny@...el.com>, dm-devel@...hat.com,
        linux-xfs@...r.kernel.org, nvdimm@...ts.linux.dev,
        linux-s390@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-erofs@...ts.ozlabs.org, linux-ext4@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Subject: futher decouple DAX from block devices

Hi Dan,

this series cleans up and simplifies the association between DAX and block
devices in preparation of allowing to mount file systems directly on DAX
devices without a detour through block devices.

Diffstat:
 drivers/dax/Kconfig          |    4 
 drivers/dax/bus.c            |    2 
 drivers/dax/super.c          |  220 +++++--------------------------------------
 drivers/md/dm-linear.c       |   51 +++------
 drivers/md/dm-log-writes.c   |   44 +++-----
 drivers/md/dm-stripe.c       |   65 +++---------
 drivers/md/dm-table.c        |   22 ++--
 drivers/md/dm-writecache.c   |    2 
 drivers/md/dm.c              |   29 -----
 drivers/md/dm.h              |    4 
 drivers/nvdimm/Kconfig       |    2 
 drivers/nvdimm/pmem.c        |    9 -
 drivers/s390/block/Kconfig   |    2 
 drivers/s390/block/dcssblk.c |   12 +-
 fs/dax.c                     |   13 ++
 fs/erofs/super.c             |   11 +-
 fs/ext2/super.c              |    6 -
 fs/ext4/super.c              |    9 +
 fs/fuse/Kconfig              |    2 
 fs/fuse/virtio_fs.c          |    2 
 fs/xfs/xfs_super.c           |   54 +++++-----
 include/linux/dax.h          |   30 ++---
 22 files changed, 185 insertions(+), 410 deletions(-)