From: Christoph Hellwig <hch@infradead.org>
To: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Cc: linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org,
nvdimm@lists.linux.dev, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org, djwong@kernel.org,
dan.j.williams@intel.com, david@fromorbit.com, hch@infradead.org,
jane.chu@oracle.com
Subject: Re: [PATCH v7 7/8] xfs: Implement ->notify_failure() for XFS
Date: Thu, 14 Oct 2021 23:41:36 -0700 [thread overview]
Message-ID: <YWkioFQrfKAL8PvR@infradead.org> (raw)
In-Reply-To: <20210924130959.2695749-8-ruansy.fnst@fujitsu.com>
On Fri, Sep 24, 2021 at 09:09:58PM +0800, Shiyang Ruan wrote:
> +void fs_dax_register_holder(struct dax_device *dax_dev, void *holder,
> + const struct dax_holder_operations *ops)
> +{
> + dax_set_holder(dax_dev, holder, ops);
> +}
> +EXPORT_SYMBOL_GPL(fs_dax_register_holder);
> +
> +void fs_dax_unregister_holder(struct dax_device *dax_dev)
> +{
> + dax_set_holder(dax_dev, NULL, NULL);
> +}
> +EXPORT_SYMBOL_GPL(fs_dax_unregister_holder);
> +
> +void *fs_dax_get_holder(struct dax_device *dax_dev)
> +{
> + return dax_get_holder(dax_dev);
> +}
> +EXPORT_SYMBOL_GPL(fs_dax_get_holder);
These should not be in a XFS patch. But why do we even need this
wrappers?
> @@ -377,6 +385,8 @@ xfs_close_devices(
>
> xfs_free_buftarg(mp->m_logdev_targp);
> xfs_blkdev_put(logdev);
> + if (dax_logdev)
> + fs_dax_unregister_holder(dax_logdev);
> fs_put_dax(dax_logdev);
I'd prefer to include the fs_dax_unregister_holder in the fs_put_dax
call to avoid callers failing to unregister it.
> @@ -411,6 +425,9 @@ xfs_open_devices(
> struct block_device *logdev = NULL, *rtdev = NULL;
> int error;
>
> + if (dax_ddev)
> + fs_dax_register_holder(dax_ddev, mp,
> + &xfs_dax_holder_operations);
I'd include the holder registration with fs_dax_get_by_bdev as well.
next prev parent reply other threads:[~2021-10-15 6:41 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-24 13:09 [PATCH v7 0/8] [PATCH v7 0/8] fsdax: introduce fs query to support reflink Shiyang Ruan
2021-09-24 13:09 ` [PATCH v7 1/8] dax: Use rwsem for dax_{read,write}_lock() Shiyang Ruan
2021-10-14 17:48 ` Darrick J. Wong
2021-10-20 5:19 ` Shiyang Ruan
2021-10-15 6:30 ` Christoph Hellwig
2021-09-24 13:09 ` [PATCH v7 2/8] dax: Introduce holder for dax_device Shiyang Ruan
2021-10-14 18:00 ` Darrick J. Wong
2021-10-20 6:58 ` Shiyang Ruan
2021-09-24 13:09 ` [PATCH v7 3/8] mm: factor helpers for memory_failure_dev_pagemap Shiyang Ruan
2021-10-14 18:02 ` Darrick J. Wong
2021-10-15 6:33 ` Christoph Hellwig
2021-09-24 13:09 ` [PATCH v7 4/8] pagemap,pmem: Introduce ->memory_failure() Shiyang Ruan
2021-10-14 18:05 ` Darrick J. Wong
2021-10-20 5:25 ` Shiyang Ruan
2021-10-15 6:36 ` Christoph Hellwig
2021-09-24 13:09 ` [PATCH v7 5/8] fsdax: Introduce dax_lock_mapping_entry() Shiyang Ruan
2021-10-14 18:17 ` Darrick J. Wong
2021-09-24 13:09 ` [PATCH v7 6/8] mm: Introduce mf_dax_kill_procs() for fsdax case Shiyang Ruan
2021-10-14 19:32 ` Darrick J. Wong
2021-10-20 5:47 ` Shiyang Ruan
2021-09-24 13:09 ` [PATCH v7 7/8] xfs: Implement ->notify_failure() for XFS Shiyang Ruan
2021-10-14 19:21 ` Darrick J. Wong
2021-10-15 6:41 ` Christoph Hellwig [this message]
2021-09-24 13:09 ` [PATCH v7 8/8] fsdax: add exception for reflinked files Shiyang Ruan
2021-10-14 19:24 ` Darrick J. Wong
2021-10-15 6:38 ` Christoph Hellwig
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