Re: futher decouple DAX from block devices

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

From: Christoph Hellwig <hch@lst.de>
Date: 2021-11-04 08:17:45
Also in: dm-devel, linux-ext4, linux-fsdevel, linux-xfs, nvdimm, virtualization

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.

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