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6 | 6 | #ifndef __XFS_AOPS_H__ |
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7 | 7 | #define __XFS_AOPS_H__ |
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8 | 8 | |
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9 | | -extern struct bio_set xfs_ioend_bioset; |
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10 | | - |
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11 | | -/* |
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12 | | - * Types of I/O for bmap clustering and I/O completion tracking. |
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13 | | - */ |
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14 | | -enum { |
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15 | | - XFS_IO_INVALID, /* initial state */ |
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16 | | - XFS_IO_DELALLOC, /* covers delalloc region */ |
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17 | | - XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */ |
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18 | | - XFS_IO_OVERWRITE, /* covers already allocated extent */ |
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19 | | - XFS_IO_COW, /* covers copy-on-write extent */ |
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20 | | - XFS_IO_HOLE, /* covers region without any block allocation */ |
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21 | | -}; |
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22 | | - |
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23 | | -#define XFS_IO_TYPES \ |
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24 | | - { XFS_IO_INVALID, "invalid" }, \ |
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25 | | - { XFS_IO_DELALLOC, "delalloc" }, \ |
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26 | | - { XFS_IO_UNWRITTEN, "unwritten" }, \ |
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27 | | - { XFS_IO_OVERWRITE, "overwrite" }, \ |
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28 | | - { XFS_IO_COW, "CoW" }, \ |
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29 | | - { XFS_IO_HOLE, "hole" } |
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30 | | - |
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31 | | -/* |
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32 | | - * Structure for buffered I/O completions. |
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33 | | - */ |
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34 | | -struct xfs_ioend { |
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35 | | - struct list_head io_list; /* next ioend in chain */ |
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36 | | - unsigned int io_type; /* delalloc / unwritten */ |
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37 | | - struct inode *io_inode; /* file being written to */ |
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38 | | - size_t io_size; /* size of the extent */ |
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39 | | - xfs_off_t io_offset; /* offset in the file */ |
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40 | | - struct work_struct io_work; /* xfsdatad work queue */ |
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41 | | - struct xfs_trans *io_append_trans;/* xact. for size update */ |
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42 | | - struct bio *io_bio; /* bio being built */ |
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43 | | - struct bio io_inline_bio; /* MUST BE LAST! */ |
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44 | | -}; |
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45 | | - |
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46 | 9 | extern const struct address_space_operations xfs_address_space_operations; |
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47 | 10 | extern const struct address_space_operations xfs_dax_aops; |
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48 | 11 | |
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49 | 12 | int xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size); |
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50 | | - |
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51 | | -extern void xfs_count_page_state(struct page *, int *, int *); |
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52 | | -extern struct block_device *xfs_find_bdev_for_inode(struct inode *); |
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53 | | -extern struct dax_device *xfs_find_daxdev_for_inode(struct inode *); |
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54 | 13 | |
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55 | 14 | #endif /* __XFS_AOPS_H__ */ |
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