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Diffstat (limited to 'fs/xfs/xfs_aops.h')
| -rw-r--r-- | fs/xfs/xfs_aops.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h new file mode 100644 index 000000000..9af867951 --- /dev/null +++ b/fs/xfs/xfs_aops.h @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2005-2006 Silicon Graphics, Inc. + * All Rights Reserved. + */ +#ifndef __XFS_AOPS_H__ +#define __XFS_AOPS_H__ + +extern struct bio_set xfs_ioend_bioset; + +/* + * Types of I/O for bmap clustering and I/O completion tracking. + */ +enum { + XFS_IO_INVALID, /* initial state */ + XFS_IO_DELALLOC, /* covers delalloc region */ + XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */ + XFS_IO_OVERWRITE, /* covers already allocated extent */ + XFS_IO_COW, /* covers copy-on-write extent */ + XFS_IO_HOLE, /* covers region without any block allocation */ +}; + +#define XFS_IO_TYPES \ + { XFS_IO_INVALID, "invalid" }, \ + { XFS_IO_DELALLOC, "delalloc" }, \ + { XFS_IO_UNWRITTEN, "unwritten" }, \ + { XFS_IO_OVERWRITE, "overwrite" }, \ + { XFS_IO_COW, "CoW" }, \ + { XFS_IO_HOLE, "hole" } + +/* + * Structure for buffered I/O completions. + */ +struct xfs_ioend { + struct list_head io_list; /* next ioend in chain */ + unsigned int io_type; /* delalloc / unwritten */ + struct inode *io_inode; /* file being written to */ + size_t io_size; /* size of the extent */ + xfs_off_t io_offset; /* offset in the file */ + struct work_struct io_work; /* xfsdatad work queue */ + struct xfs_trans *io_append_trans;/* xact. for size update */ + struct bio *io_bio; /* bio being built */ + struct bio io_inline_bio; /* MUST BE LAST! */ +}; + +extern const struct address_space_operations xfs_address_space_operations; +extern const struct address_space_operations xfs_dax_aops; + +int xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size); + +extern void xfs_count_page_state(struct page *, int *, int *); +extern struct block_device *xfs_find_bdev_for_inode(struct inode *); +extern struct dax_device *xfs_find_daxdev_for_inode(struct inode *); + +#endif /* __XFS_AOPS_H__ */ |