Re: futher decouple DAX from block devices

From: Christoph Hellwig <hch@lst.de>
Date: 2021-11-04 08:17:45
Also in: dm-devel, linux-fsdevel, linux-s390, linux-xfs, nvdimm, virtualization
Reply to: Eric Sandeen, 2021-11-03

On Wed, Nov 03, 2021 at 12:59:31PM -0500, Eric Sandeen wrote:

Christoph, can I ask what the end game looks like, here? If dax is completely
decoupled from block devices, are there user-visible changes?

Yes.

If I want to
run fs-dax on a pmem device - what do I point mkfs at, if not a block device?

The rough plan is to use the device dax character devices.  I'll hopefully
have a draft version in the next days.

Christoph Hellwig · 2021-10-18
[PATCH 01/11] dm: make the DAX support dependend on CONFIG_FS_DAX · Christoph Hellwig · 2021-10-18
Re: [PATCH 01/11] dm: make the DAX support dependend on CONFIG_FS_DAX · Dan Williams · 2021-10-27
Re: [PATCH 01/11] dm: make the DAX support dependend on CONFIG_FS_DAX · Mike Snitzer · 2021-11-01
[PATCH 02/11] dax: remove CONFIG_DAX_DRIVER · Christoph Hellwig · 2021-10-18
Re: [PATCH 02/11] dax: remove CONFIG_DAX_DRIVER · Dan Williams · 2021-10-27
[PATCH 04/11] dax: remove the pgmap sanity checks in generic_fsdax_supported · Christoph Hellwig · 2021-10-18
Re: [PATCH 04/11] dax: remove the pgmap sanity checks in generic_fsdax_supported · Dan Williams · 2021-10-27
[PATCH 05/11] dax: move the partition alignment check into fs_dax_get_by_bdev · Christoph Hellwig · 2021-10-18
Re: [PATCH 05/11] dax: move the partition alignment check into fs_dax_get_by_bdev · Dan Williams · 2021-10-27
[PATCH 03/11] dax: simplify the dax_device <-> gendisk association · Christoph Hellwig · 2021-10-18
Re: [PATCH 03/11] dax: simplify the dax_device <-> gendisk association · Dan Williams · 2021-10-27
Re: [PATCH 03/11] dax: simplify the dax_device <-> gendisk association · Ira Weiny · 2021-10-29
Re: [PATCH 03/11] dax: simplify the dax_device <-> gendisk association · Mike Snitzer · 2021-11-01
[PATCH 06/11] xfs: factor out a xfs_setup_dax helper · Christoph Hellwig · 2021-10-18
[PATCH 08/11] dm-linear: add a linear_dax_pgoff helper · Christoph Hellwig · 2021-10-18
Re: [PATCH 08/11] dm-linear: add a linear_dax_pgoff helper · Dan Williams · 2021-10-28
Re: [PATCH 08/11] dm-linear: add a linear_dax_pgoff helper · Mike Snitzer · 2021-11-01
[PATCH 07/11] dax: remove dax_capable · Christoph Hellwig · 2021-10-18
Re: [PATCH 07/11] dax: remove dax_capable · Gao Xiang · 2021-10-18
Re: [dm-devel] [PATCH 07/11] dax: remove dax_capable · Darrick J. Wong · 2021-10-19
Re: [dm-devel] [PATCH 07/11] dax: remove dax_capable · Dan Williams · 2021-10-28
Re: [PATCH 07/11] dax: remove dax_capable · Dan Williams · 2021-10-28
Re: [PATCH 07/11] dax: remove dax_capable · Mike Snitzer · 2021-11-01
[PATCH 09/11] dm-log-writes: add a log_writes_dax_pgoff helper · Christoph Hellwig · 2021-10-18
Re: [PATCH 09/11] dm-log-writes: add a log_writes_dax_pgoff helper · Dan Williams · 2021-10-28
Re: [PATCH 09/11] dm-log-writes: add a log_writes_dax_pgoff helper · Mike Snitzer · 2021-11-01
[PATCH 10/11] dm-stripe: add a stripe_dax_pgoff helper · Christoph Hellwig · 2021-10-18
Re: [PATCH 10/11] dm-stripe: add a stripe_dax_pgoff helper · Dan Williams · 2021-10-28
Re: [PATCH 10/11] dm-stripe: add a stripe_dax_pgoff helper · Mike Snitzer · 2021-11-01
[PATCH 11/11] dax: move bdev_dax_pgoff to fs/dax.c · Christoph Hellwig · 2021-10-18
Re: [PATCH 11/11] dax: move bdev_dax_pgoff to fs/dax.c · Dan Williams · 2021-10-28
Dan Williams · 2021-10-27
Stephen Rothwell · 2021-10-28
Dan Williams · 2021-10-29
Darrick J. Wong · 2021-10-29
Dan Williams · 2021-10-29
Eric Sandeen · 2021-11-03
Christoph Hellwig · 2021-11-04
Darrick J. Wong · 2021-11-04
Christoph Hellwig · 2021-11-04
Dan Williams · 2021-11-04
Darrick J. Wong · 2021-11-04
Theodore Ts'o · 2021-11-05
Matthew Wilcox · 2021-11-05
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