From: Mike Snitzer <snitzer@redhat.com>
To: Christoph Hellwig <hch@lst.de>
Cc: nvdimm@lists.linux.dev, linux-s390@vger.kernel.org,
linux-erofs@lists.ozlabs.org,
virtualization@lists.linux-foundation.org,
linux-xfs@vger.kernel.org, dm-devel@redhat.com,
linux-fsdevel@vger.kernel.org,
Dan Williams <dan.j.williams@intel.com>,
linux-ext4@vger.kernel.org, Ira Weiny <ira.weiny@intel.com>
Subject: Re: [PATCH 03/11] dax: simplify the dax_device <-> gendisk association
Date: Mon, 1 Nov 2021 12:28:38 -0400 [thread overview]
Message-ID: <YYAVtv6kiqVHDjQH@redhat.com> (raw)
In-Reply-To: <20211018044054.1779424-4-hch@lst.de>
On Mon, Oct 18 2021 at 12:40P -0400,
Christoph Hellwig <hch@lst.de> wrote:
> Replace the dax_host_hash with an xarray indexed by the pointer value
> of the gendisk, and require explicitl calls from the block drivers that
> want to associate their gendisk with a dax_device.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
...
> diff --git a/drivers/md/dm.c b/drivers/md/dm.c
> index 79737aee516b1..a0a4703620650 100644
> --- a/drivers/md/dm.c
> +++ b/drivers/md/dm.c
> @@ -1683,6 +1683,7 @@ static void cleanup_mapped_device(struct mapped_device *md)
> bioset_exit(&md->io_bs);
>
> if (md->dax_dev) {
> + dax_remove_host(md->disk);
> kill_dax(md->dax_dev);
> put_dax(md->dax_dev);
> md->dax_dev = NULL;
> @@ -1784,10 +1785,11 @@ static struct mapped_device *alloc_dev(int minor)
> sprintf(md->disk->disk_name, "dm-%d", minor);
>
> if (IS_ENABLED(CONFIG_FS_DAX)) {
> - md->dax_dev = alloc_dax(md, md->disk->disk_name,
> - &dm_dax_ops, 0);
> + md->dax_dev = alloc_dax(md, &dm_dax_ops, 0);
> if (IS_ERR(md->dax_dev))
> goto bad;
> + if (dax_add_host(md->dax_dev, md->disk))
> + goto bad;
> }
>
> format_dev_t(md->name, MKDEV(_major, minor));
Acked-by: Mike Snitzer <snitzer@redhat.com>
next prev parent reply other threads:[~2021-11-01 16:28 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-18 4:40 futher decouple DAX from block devices Christoph Hellwig
2021-10-18 4:40 ` [PATCH 01/11] dm: make the DAX support dependend on CONFIG_FS_DAX Christoph Hellwig
2021-10-27 20:53 ` Dan Williams
2021-11-01 16:12 ` Mike Snitzer
2021-10-18 4:40 ` [PATCH 02/11] dax: remove CONFIG_DAX_DRIVER Christoph Hellwig
2021-10-27 20:54 ` Dan Williams
2021-10-18 4:40 ` [PATCH 03/11] dax: simplify the dax_device <-> gendisk association Christoph Hellwig
2021-10-27 22:03 ` Dan Williams
2021-10-29 4:57 ` Ira Weiny
2021-11-01 16:28 ` Mike Snitzer [this message]
2021-10-18 4:40 ` [PATCH 04/11] dax: remove the pgmap sanity checks in generic_fsdax_supported Christoph Hellwig
2021-10-27 23:02 ` Dan Williams
2021-10-18 4:40 ` [PATCH 05/11] dax: move the partition alignment check into fs_dax_get_by_bdev Christoph Hellwig
2021-10-27 23:07 ` Dan Williams
2021-10-18 4:40 ` [PATCH 06/11] xfs: factor out a xfs_setup_dax helper Christoph Hellwig
2021-10-18 16:43 ` Darrick J. Wong
2021-10-19 7:23 ` Christoph Hellwig
2021-10-27 23:37 ` Dan Williams
2021-10-18 4:40 ` [PATCH 07/11] dax: remove dax_capable Christoph Hellwig
2021-10-18 12:25 ` Gao Xiang
2021-10-19 15:44 ` [dm-devel] " Darrick J. Wong
2021-10-28 0:20 ` Dan Williams
2021-10-28 0:16 ` Dan Williams
2021-11-01 16:17 ` Mike Snitzer
2021-10-18 4:40 ` [PATCH 08/11] dm-linear: add a linear_dax_pgoff helper Christoph Hellwig
2021-10-28 1:32 ` Dan Williams
2021-11-01 16:18 ` Mike Snitzer
2021-10-18 4:40 ` [PATCH 09/11] dm-log-writes: add a log_writes_dax_pgoff helper Christoph Hellwig
2021-10-28 1:36 ` Dan Williams
2021-11-01 16:19 ` Mike Snitzer
2021-10-18 4:40 ` [PATCH 10/11] dm-stripe: add a stripe_dax_pgoff helper Christoph Hellwig
2021-10-28 1:41 ` Dan Williams
2021-11-01 16:21 ` Mike Snitzer
2021-10-18 4:40 ` [PATCH 11/11] dax: move bdev_dax_pgoff to fs/dax.c Christoph Hellwig
2021-10-28 1:44 ` Dan Williams
2021-10-27 20:46 ` futher decouple DAX from block devices Dan Williams
2021-10-28 23:51 ` Stephen Rothwell
2021-10-29 15:42 ` Dan Williams
2021-10-29 15:55 ` Darrick J. Wong
2021-10-29 16:16 ` Dan Williams
2021-11-03 17:59 ` Eric Sandeen
2021-11-04 8:17 ` Christoph Hellwig
2021-11-04 17:34 ` Darrick J. Wong
2021-11-04 17:35 ` Christoph Hellwig
2021-11-04 18:10 ` Dan Williams
2021-11-04 19:04 ` Darrick J. Wong
2021-11-05 3:09 ` Theodore Ts'o
2021-11-05 3:30 ` Matthew Wilcox
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