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| author | Shiyang Ruan <ruansy.fnst@fujitsu.com> | 2022-06-03 07:37:37 +0200 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-07-18 02:14:32 +0200 |
| commit | ea6c49b784f0998297fb206af81c28dfaf8bb343 (patch) | |
| tree | bbc2ae4687443b7dfcbfde5726a30be5b7ca8a9d /fs/xfs/xfs_iomap.h | |
| parent | fsdax: dedup file range to use a compare function (diff) | |
| download | linux-ea6c49b784f0998297fb206af81c28dfaf8bb343.tar.xz linux-ea6c49b784f0998297fb206af81c28dfaf8bb343.zip | |
xfs: support CoW in fsdax mode
In fsdax mode, WRITE and ZERO on a shared extent need CoW performed.
After that, new allocated extents needs to be remapped to the file. So,
add a CoW identification in ->iomap_begin(), and implement ->iomap_end()
to do the remapping work.
[akpm@linux-foundation.org: make xfs_dax_fault() static]
Link: https://lkml.kernel.org/r/20220603053738.1218681-14-ruansy.fnst@fujitsu.com
Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dan Williams <dan.j.wiliams@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Goldwyn Rodrigues <rgoldwyn@suse.com>
Cc: Goldwyn Rodrigues <rgoldwyn@suse.de>
Cc: Jane Chu <jane.chu@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Ritesh Harjani <riteshh@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs/xfs/xfs_iomap.h')
| -rw-r--r-- | fs/xfs/xfs_iomap.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/xfs/xfs_iomap.h b/fs/xfs/xfs_iomap.h index e88dc162c785..c782e8c0479c 100644 --- a/fs/xfs/xfs_iomap.h +++ b/fs/xfs/xfs_iomap.h @@ -51,5 +51,6 @@ extern const struct iomap_ops xfs_direct_write_iomap_ops; extern const struct iomap_ops xfs_read_iomap_ops; extern const struct iomap_ops xfs_seek_iomap_ops; extern const struct iomap_ops xfs_xattr_iomap_ops; +extern const struct iomap_ops xfs_dax_write_iomap_ops; #endif /* __XFS_IOMAP_H__*/ |